/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 14:51:07,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 14:51:07,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 14:51:08,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 14:51:08,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 14:51:08,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 14:51:08,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 14:51:08,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 14:51:08,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 14:51:08,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 14:51:08,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 14:51:08,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-06-10 14:51:08,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 14:51:08,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 14:51:08,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 14:51:08,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 14:51:08,079 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 14:51:08,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 14:51:08,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 14:51:08,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 14:51:08,082 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 14:51:08,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 14:51:08,082 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 14:51:08,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 14:51:08,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 14:51:08,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 14:51:08,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 14:51:08,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 14:51:08,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 14:51:08,083 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 14:51:08,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 14:51:08,084 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 14:51:08,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 14:51:08,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 14:51:08,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 14:51:08,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 14:51:08,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 14:51:08,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:51:08,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 14:51:08,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 14:51:08,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 14:51:08,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 14:51:08,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 14:51:08,085 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 14:51:08,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 14:51:08,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 14:51:08,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 14:51:08,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 14:51:08,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 14:51:08,363 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 14:51:08,364 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 14:51:08,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2021-06-10 14:51:08,365 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2021-06-10 14:51:08,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 14:51:08,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 14:51:08,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 14:51:08,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 14:51:08,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 14:51:08,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:08" (1/1) ... [2021-06-10 14:51:08,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:08" (1/1) ... [2021-06-10 14:51:08,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 14:51:08,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 14:51:08,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 14:51:08,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 14:51:08,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:08" (1/1) ... [2021-06-10 14:51:08,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:08" (1/1) ... [2021-06-10 14:51:08,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:08" (1/1) ... [2021-06-10 14:51:08,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:08" (1/1) ... [2021-06-10 14:51:08,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:08" (1/1) ... [2021-06-10 14:51:08,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:08" (1/1) ... [2021-06-10 14:51:08,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:08" (1/1) ... [2021-06-10 14:51:08,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 14:51:08,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 14:51:08,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 14:51:08,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 14:51:08,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:51:08,517 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-10 14:51:08,518 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-10 14:51:08,519 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-10 14:51:08,519 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-10 14:51:08,519 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-10 14:51:08,519 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-10 14:51:08,520 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-10 14:51:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-10 14:51:08,520 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-10 14:51:08,520 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-10 14:51:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-10 14:51:08,520 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-10 14:51:08,520 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-10 14:51:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-10 14:51:08,520 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-10 14:51:08,520 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 14:51:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 14:51:08,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 14:51:08,522 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-10 14:51:08,523 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-10 14:51:08,523 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-10 14:51:08,524 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 14:51:08,661 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 14:51:08,661 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-10 14:51:08,662 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:51:08 BoogieIcfgContainer [2021-06-10 14:51:08,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 14:51:08,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 14:51:08,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 14:51:08,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 14:51:08,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:51:08" (1/2) ... [2021-06-10 14:51:08,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7875a3b7 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 02:51:08, skipping insertion in model container [2021-06-10 14:51:08,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:51:08" (2/2) ... [2021-06-10 14:51:08,667 INFO L111 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2021-06-10 14:51:08,671 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 14:51:08,675 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 14:51:08,676 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 14:51:08,809 INFO L149 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2021-06-10 14:51:08,828 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-06-10 14:51:08,854 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 14:51:08,855 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 14:51:08,855 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 14:51:08,855 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 14:51:08,855 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 14:51:08,855 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 14:51:08,855 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 14:51:08,855 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 14:51:08,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 63 transitions, 264 flow [2021-06-10 14:51:08,936 INFO L129 PetriNetUnfolder]: 129/213 cut-off events. [2021-06-10 14:51:08,936 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-06-10 14:51:08,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 213 events. 129/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 763 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2021-06-10 14:51:08,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 63 transitions, 264 flow [2021-06-10 14:51:08,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 55 transitions, 236 flow [2021-06-10 14:51:08,993 INFO L129 PetriNetUnfolder]: 129/210 cut-off events. [2021-06-10 14:51:08,993 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-06-10 14:51:08,993 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:08,994 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:08,994 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:08,998 INFO L82 PathProgramCache]: Analyzing trace with hash 2015486039, now seen corresponding path program 1 times [2021-06-10 14:51:09,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:09,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104498402] [2021-06-10 14:51:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:09,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:09,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:51:09,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:09,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104498402] [2021-06-10 14:51:09,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:09,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:51:09,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073731756] [2021-06-10 14:51:09,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:51:09,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:09,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:51:09,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:51:09,142 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2021-06-10 14:51:09,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:09,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2021-06-10 14:51:09,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:09,187 INFO L129 PetriNetUnfolder]: 49/100 cut-off events. [2021-06-10 14:51:09,187 INFO L130 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2021-06-10 14:51:09,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 100 events. 49/100 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 320 event pairs, 0 based on Foata normal form. 31/131 useless extension candidates. Maximal degree in co-relation 172. Up to 30 conditions per place. [2021-06-10 14:51:09,192 INFO L132 encePairwiseOnDemand]: 57/63 looper letters, 1 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2021-06-10 14:51:09,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 190 flow [2021-06-10 14:51:09,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:51:09,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:51:09,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2021-06-10 14:51:09,203 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-06-10 14:51:09,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2021-06-10 14:51:09,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2021-06-10 14:51:09,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:09,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2021-06-10 14:51:09,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,211 INFO L185 Difference]: Start difference. First operand has 44 places, 55 transitions, 236 flow. Second operand 3 states and 175 transitions. [2021-06-10 14:51:09,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 190 flow [2021-06-10 14:51:09,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 126 flow, removed 0 selfloop flow, removed 12 redundant places. [2021-06-10 14:51:09,216 INFO L241 Difference]: Finished difference. Result has 34 places, 45 transitions, 124 flow [2021-06-10 14:51:09,218 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=34, PETRI_TRANSITIONS=45} [2021-06-10 14:51:09,218 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -10 predicate places. [2021-06-10 14:51:09,218 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 45 transitions, 124 flow [2021-06-10 14:51:09,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,219 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:09,219 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:09,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 14:51:09,219 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:09,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1011323523, now seen corresponding path program 1 times [2021-06-10 14:51:09,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:09,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764650648] [2021-06-10 14:51:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:09,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:09,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:51:09,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:09,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764650648] [2021-06-10 14:51:09,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:09,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:51:09,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571477284] [2021-06-10 14:51:09,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:51:09,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:09,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:51:09,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:51:09,248 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2021-06-10 14:51:09,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 45 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:09,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2021-06-10 14:51:09,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:09,260 INFO L129 PetriNetUnfolder]: 21/61 cut-off events. [2021-06-10 14:51:09,260 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-06-10 14:51:09,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 61 events. 21/61 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 0 based on Foata normal form. 11/72 useless extension candidates. Maximal degree in co-relation 60. Up to 12 conditions per place. [2021-06-10 14:51:09,261 INFO L132 encePairwiseOnDemand]: 59/63 looper letters, 2 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2021-06-10 14:51:09,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 121 flow [2021-06-10 14:51:09,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:51:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:51:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2021-06-10 14:51:09,263 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2021-06-10 14:51:09,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2021-06-10 14:51:09,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2021-06-10 14:51:09,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:09,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2021-06-10 14:51:09,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,265 INFO L185 Difference]: Start difference. First operand has 34 places, 45 transitions, 124 flow. Second operand 3 states and 174 transitions. [2021-06-10 14:51:09,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 121 flow [2021-06-10 14:51:09,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:09,267 INFO L241 Difference]: Finished difference. Result has 35 places, 42 transitions, 116 flow [2021-06-10 14:51:09,267 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=35, PETRI_TRANSITIONS=42} [2021-06-10 14:51:09,268 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -9 predicate places. [2021-06-10 14:51:09,268 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 42 transitions, 116 flow [2021-06-10 14:51:09,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,268 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:09,268 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:09,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 14:51:09,269 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:09,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:09,269 INFO L82 PathProgramCache]: Analyzing trace with hash 84337759, now seen corresponding path program 1 times [2021-06-10 14:51:09,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:09,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932230474] [2021-06-10 14:51:09,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:09,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:09,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:51:09,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:09,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932230474] [2021-06-10 14:51:09,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:09,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:51:09,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106138283] [2021-06-10 14:51:09,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:51:09,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:09,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:51:09,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:51:09,289 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2021-06-10 14:51:09,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 42 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:09,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2021-06-10 14:51:09,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:09,298 INFO L129 PetriNetUnfolder]: 12/48 cut-off events. [2021-06-10 14:51:09,299 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-06-10 14:51:09,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 48 events. 12/48 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 4/52 useless extension candidates. Maximal degree in co-relation 52. Up to 8 conditions per place. [2021-06-10 14:51:09,299 INFO L132 encePairwiseOnDemand]: 60/63 looper letters, 3 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2021-06-10 14:51:09,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 118 flow [2021-06-10 14:51:09,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:51:09,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:51:09,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2021-06-10 14:51:09,301 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2021-06-10 14:51:09,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2021-06-10 14:51:09,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2021-06-10 14:51:09,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:09,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2021-06-10 14:51:09,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,303 INFO L185 Difference]: Start difference. First operand has 35 places, 42 transitions, 116 flow. Second operand 3 states and 174 transitions. [2021-06-10 14:51:09,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 118 flow [2021-06-10 14:51:09,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 117 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:09,304 INFO L241 Difference]: Finished difference. Result has 36 places, 40 transitions, 111 flow [2021-06-10 14:51:09,304 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2021-06-10 14:51:09,305 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2021-06-10 14:51:09,305 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 111 flow [2021-06-10 14:51:09,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,305 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:09,305 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:09,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 14:51:09,305 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:09,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:09,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1690388227, now seen corresponding path program 1 times [2021-06-10 14:51:09,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:09,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206638442] [2021-06-10 14:51:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:09,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:09,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:51:09,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:09,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206638442] [2021-06-10 14:51:09,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:09,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:51:09,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143615572] [2021-06-10 14:51:09,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:51:09,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:09,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:51:09,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:51:09,333 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2021-06-10 14:51:09,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:09,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2021-06-10 14:51:09,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:09,341 INFO L129 PetriNetUnfolder]: 1/27 cut-off events. [2021-06-10 14:51:09,341 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-10 14:51:09,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 27 events. 1/27 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 5/32 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2021-06-10 14:51:09,341 INFO L132 encePairwiseOnDemand]: 58/63 looper letters, 1 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2021-06-10 14:51:09,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 27 transitions, 76 flow [2021-06-10 14:51:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:51:09,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:51:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2021-06-10 14:51:09,343 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2021-06-10 14:51:09,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2021-06-10 14:51:09,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2021-06-10 14:51:09,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:09,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2021-06-10 14:51:09,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,345 INFO L185 Difference]: Start difference. First operand has 36 places, 40 transitions, 111 flow. Second operand 3 states and 174 transitions. [2021-06-10 14:51:09,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 27 transitions, 76 flow [2021-06-10 14:51:09,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 27 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:09,346 INFO L241 Difference]: Finished difference. Result has 37 places, 27 transitions, 73 flow [2021-06-10 14:51:09,346 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2021-06-10 14:51:09,346 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -7 predicate places. [2021-06-10 14:51:09,346 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 73 flow [2021-06-10 14:51:09,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,346 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:09,346 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:09,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 14:51:09,347 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:09,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:09,347 INFO L82 PathProgramCache]: Analyzing trace with hash 947760027, now seen corresponding path program 1 times [2021-06-10 14:51:09,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:09,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482671082] [2021-06-10 14:51:09,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:09,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:09,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:09,469 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:09,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:09,481 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:09,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:09,498 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:09,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:09,521 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:09,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:09,564 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:09,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:09,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482671082] [2021-06-10 14:51:09,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:09,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:09,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666586439] [2021-06-10 14:51:09,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:09,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:09,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:09,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:09,598 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:09,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 73 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:09,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:09,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:09,710 INFO L129 PetriNetUnfolder]: 179/519 cut-off events. [2021-06-10 14:51:09,710 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 14:51:09,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 519 events. 179/519 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3714 event pairs, 49 based on Foata normal form. 1/491 useless extension candidates. Maximal degree in co-relation 768. Up to 97 conditions per place. [2021-06-10 14:51:09,716 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 20 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2021-06-10 14:51:09,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 163 flow [2021-06-10 14:51:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:09,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:09,719 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:09,719 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:09,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:09,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:09,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:09,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,723 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,723 INFO L185 Difference]: Start difference. First operand has 37 places, 27 transitions, 73 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:09,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 163 flow [2021-06-10 14:51:09,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:09,725 INFO L241 Difference]: Finished difference. Result has 49 places, 32 transitions, 117 flow [2021-06-10 14:51:09,725 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=117, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2021-06-10 14:51:09,725 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2021-06-10 14:51:09,725 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 117 flow [2021-06-10 14:51:09,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,726 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:09,726 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:09,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 14:51:09,727 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:09,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:09,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1295948987, now seen corresponding path program 2 times [2021-06-10 14:51:09,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:09,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946700521] [2021-06-10 14:51:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:09,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:09,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:09,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:09,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:09,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:09,822 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:51:09,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:51:09,851 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:09,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:09,878 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:09,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:09,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946700521] [2021-06-10 14:51:09,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:09,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:09,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415889534] [2021-06-10 14:51:09,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:09,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:09,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:09,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:09,900 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:09,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 117 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:09,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:09,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:09,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:10,020 INFO L129 PetriNetUnfolder]: 194/641 cut-off events. [2021-06-10 14:51:10,021 INFO L130 PetriNetUnfolder]: For 423/423 co-relation queries the response was YES. [2021-06-10 14:51:10,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 641 events. 194/641 cut-off events. For 423/423 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4843 event pairs, 51 based on Foata normal form. 1/605 useless extension candidates. Maximal degree in co-relation 1322. Up to 133 conditions per place. [2021-06-10 14:51:10,026 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 27 selfloop transitions, 10 changer transitions 1/58 dead transitions. [2021-06-10 14:51:10,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 316 flow [2021-06-10 14:51:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:10,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:10,028 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:10,028 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:10,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:10,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:10,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:10,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,030 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,030 INFO L185 Difference]: Start difference. First operand has 49 places, 32 transitions, 117 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:10,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 316 flow [2021-06-10 14:51:10,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:10,033 INFO L241 Difference]: Finished difference. Result has 61 places, 40 transitions, 214 flow [2021-06-10 14:51:10,033 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=214, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2021-06-10 14:51:10,033 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2021-06-10 14:51:10,034 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 214 flow [2021-06-10 14:51:10,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,034 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:10,034 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:10,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 14:51:10,034 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:10,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:10,035 INFO L82 PathProgramCache]: Analyzing trace with hash 133381385, now seen corresponding path program 3 times [2021-06-10 14:51:10,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:10,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753213880] [2021-06-10 14:51:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:10,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:10,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:10,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:10,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:10,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:10,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:10,083 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:10,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:10,097 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:10,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:10,115 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:10,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:10,149 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:10,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:10,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753213880] [2021-06-10 14:51:10,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:10,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:10,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166554865] [2021-06-10 14:51:10,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:10,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:10,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:10,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:10,176 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:10,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 214 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:10,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:10,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:10,313 INFO L129 PetriNetUnfolder]: 223/896 cut-off events. [2021-06-10 14:51:10,313 INFO L130 PetriNetUnfolder]: For 1510/1592 co-relation queries the response was YES. [2021-06-10 14:51:10,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 896 events. 223/896 cut-off events. For 1510/1592 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7892 event pairs, 56 based on Foata normal form. 1/849 useless extension candidates. Maximal degree in co-relation 2223. Up to 184 conditions per place. [2021-06-10 14:51:10,322 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 43 selfloop transitions, 14 changer transitions 0/77 dead transitions. [2021-06-10 14:51:10,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 77 transitions, 601 flow [2021-06-10 14:51:10,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:10,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:10,324 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:10,324 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:10,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:10,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:10,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:10,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,326 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,326 INFO L185 Difference]: Start difference. First operand has 61 places, 40 transitions, 214 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:10,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 77 transitions, 601 flow [2021-06-10 14:51:10,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 584 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:10,333 INFO L241 Difference]: Finished difference. Result has 71 places, 50 transitions, 356 flow [2021-06-10 14:51:10,333 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=356, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2021-06-10 14:51:10,334 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2021-06-10 14:51:10,334 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 356 flow [2021-06-10 14:51:10,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,334 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:10,334 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:10,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 14:51:10,334 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:10,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:10,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1014142847, now seen corresponding path program 4 times [2021-06-10 14:51:10,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:10,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100488621] [2021-06-10 14:51:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:10,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:10,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:10,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:10,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:10,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:10,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:10,398 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:10,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:10,417 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:10,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:10,464 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:10,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:10,487 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:10,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:10,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100488621] [2021-06-10 14:51:10,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:10,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:10,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166410675] [2021-06-10 14:51:10,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:10,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:10,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:10,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:10,509 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:10,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 356 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:10,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:10,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:10,682 INFO L129 PetriNetUnfolder]: 252/1261 cut-off events. [2021-06-10 14:51:10,682 INFO L130 PetriNetUnfolder]: For 3432/3520 co-relation queries the response was YES. [2021-06-10 14:51:10,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3486 conditions, 1261 events. 252/1261 cut-off events. For 3432/3520 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 12970 event pairs, 65 based on Foata normal form. 1/1197 useless extension candidates. Maximal degree in co-relation 3459. Up to 253 conditions per place. [2021-06-10 14:51:10,693 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 47 selfloop transitions, 22 changer transitions 0/89 dead transitions. [2021-06-10 14:51:10,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 89 transitions, 853 flow [2021-06-10 14:51:10,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:10,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:10,695 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:10,695 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:10,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:10,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:10,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:10,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,697 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,697 INFO L185 Difference]: Start difference. First operand has 71 places, 50 transitions, 356 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:10,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 89 transitions, 853 flow [2021-06-10 14:51:10,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 820 flow, removed 12 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:10,705 INFO L241 Difference]: Finished difference. Result has 83 places, 66 transitions, 612 flow [2021-06-10 14:51:10,706 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=612, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2021-06-10 14:51:10,706 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 39 predicate places. [2021-06-10 14:51:10,706 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 612 flow [2021-06-10 14:51:10,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,707 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:10,707 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:10,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 14:51:10,707 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:10,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:10,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1508195813, now seen corresponding path program 5 times [2021-06-10 14:51:10,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:10,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653349718] [2021-06-10 14:51:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:10,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:10,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:10,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:10,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:10,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:10,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:10,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:10,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:10,765 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:10,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:10,781 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:10,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:10,802 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:10,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:10,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653349718] [2021-06-10 14:51:10,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:10,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:10,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029542738] [2021-06-10 14:51:10,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:10,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:10,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:10,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:10,822 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:10,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 612 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:10,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:10,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:10,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:11,033 INFO L129 PetriNetUnfolder]: 290/1498 cut-off events. [2021-06-10 14:51:11,033 INFO L130 PetriNetUnfolder]: For 6074/6187 co-relation queries the response was YES. [2021-06-10 14:51:11,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 1498 events. 290/1498 cut-off events. For 6074/6187 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 16136 event pairs, 77 based on Foata normal form. 1/1444 useless extension candidates. Maximal degree in co-relation 4587. Up to 297 conditions per place. [2021-06-10 14:51:11,046 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 56 selfloop transitions, 33 changer transitions 0/109 dead transitions. [2021-06-10 14:51:11,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 109 transitions, 1293 flow [2021-06-10 14:51:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:11,048 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:11,048 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:11,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:11,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:11,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:11,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,050 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,050 INFO L185 Difference]: Start difference. First operand has 83 places, 66 transitions, 612 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:11,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 109 transitions, 1293 flow [2021-06-10 14:51:11,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 109 transitions, 1262 flow, removed 10 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:11,063 INFO L241 Difference]: Finished difference. Result has 95 places, 89 transitions, 1058 flow [2021-06-10 14:51:11,063 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1058, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2021-06-10 14:51:11,064 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 51 predicate places. [2021-06-10 14:51:11,064 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 1058 flow [2021-06-10 14:51:11,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,064 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:11,064 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:11,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 14:51:11,064 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:11,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:11,065 INFO L82 PathProgramCache]: Analyzing trace with hash 431477229, now seen corresponding path program 6 times [2021-06-10 14:51:11,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:11,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078454268] [2021-06-10 14:51:11,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:11,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:11,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:11,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:11,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:11,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:11,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:11,106 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:11,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:11,117 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:11,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:11,137 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:11,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:11,157 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:11,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:11,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078454268] [2021-06-10 14:51:11,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:11,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:11,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325694445] [2021-06-10 14:51:11,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:11,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:11,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:11,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:11,179 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:11,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 1058 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:11,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:11,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:11,437 INFO L129 PetriNetUnfolder]: 290/1623 cut-off events. [2021-06-10 14:51:11,437 INFO L130 PetriNetUnfolder]: For 9535/9695 co-relation queries the response was YES. [2021-06-10 14:51:11,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5608 conditions, 1623 events. 290/1623 cut-off events. For 9535/9695 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 17948 event pairs, 118 based on Foata normal form. 2/1572 useless extension candidates. Maximal degree in co-relation 5569. Up to 285 conditions per place. [2021-06-10 14:51:11,453 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 53 selfloop transitions, 51 changer transitions 0/124 dead transitions. [2021-06-10 14:51:11,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 124 transitions, 1689 flow [2021-06-10 14:51:11,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:11,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:11,454 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:11,455 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:11,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:11,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:11,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:11,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,457 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,457 INFO L185 Difference]: Start difference. First operand has 95 places, 89 transitions, 1058 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:11,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 124 transitions, 1689 flow [2021-06-10 14:51:11,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 124 transitions, 1640 flow, removed 13 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:11,475 INFO L241 Difference]: Finished difference. Result has 107 places, 99 transitions, 1338 flow [2021-06-10 14:51:11,476 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1338, PETRI_PLACES=107, PETRI_TRANSITIONS=99} [2021-06-10 14:51:11,476 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 63 predicate places. [2021-06-10 14:51:11,476 INFO L480 AbstractCegarLoop]: Abstraction has has 107 places, 99 transitions, 1338 flow [2021-06-10 14:51:11,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,476 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:11,476 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:11,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 14:51:11,476 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:11,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:11,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1319831317, now seen corresponding path program 7 times [2021-06-10 14:51:11,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:11,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275383180] [2021-06-10 14:51:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:11,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:11,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:11,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:11,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:11,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:11,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:11,506 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:11,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:11,518 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:11,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:11,534 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:11,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:11,555 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:11,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:11,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:11,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275383180] [2021-06-10 14:51:11,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:11,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:11,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894633200] [2021-06-10 14:51:11,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:11,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:11,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:11,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:11,575 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:11,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 99 transitions, 1338 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:11,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:11,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:11,850 INFO L129 PetriNetUnfolder]: 288/1865 cut-off events. [2021-06-10 14:51:11,850 INFO L130 PetriNetUnfolder]: For 13620/13989 co-relation queries the response was YES. [2021-06-10 14:51:11,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6885 conditions, 1865 events. 288/1865 cut-off events. For 13620/13989 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 21931 event pairs, 104 based on Foata normal form. 4/1801 useless extension candidates. Maximal degree in co-relation 6840. Up to 311 conditions per place. [2021-06-10 14:51:11,871 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 68 selfloop transitions, 54 changer transitions 0/142 dead transitions. [2021-06-10 14:51:11,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 142 transitions, 2170 flow [2021-06-10 14:51:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:11,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:11,873 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:11,874 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:11,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:11,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:11,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:11,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,876 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,876 INFO L185 Difference]: Start difference. First operand has 107 places, 99 transitions, 1338 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:11,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 142 transitions, 2170 flow [2021-06-10 14:51:11,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 142 transitions, 2086 flow, removed 26 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:11,900 INFO L241 Difference]: Finished difference. Result has 119 places, 114 transitions, 1700 flow [2021-06-10 14:51:11,901 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1700, PETRI_PLACES=119, PETRI_TRANSITIONS=114} [2021-06-10 14:51:11,901 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 75 predicate places. [2021-06-10 14:51:11,901 INFO L480 AbstractCegarLoop]: Abstraction has has 119 places, 114 transitions, 1700 flow [2021-06-10 14:51:11,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:11,901 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:11,901 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:11,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-10 14:51:11,902 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:11,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:11,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1353995593, now seen corresponding path program 8 times [2021-06-10 14:51:11,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:11,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988015032] [2021-06-10 14:51:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:11,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:11,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:11,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:11,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:11,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:11,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:11,944 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:11,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:11,958 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:11,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:11,973 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:11,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:11,995 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:11,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:12,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988015032] [2021-06-10 14:51:12,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:12,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:12,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157556159] [2021-06-10 14:51:12,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:12,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:12,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:12,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:12,015 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:12,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 114 transitions, 1700 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:12,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:12,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:12,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:12,316 INFO L129 PetriNetUnfolder]: 281/2146 cut-off events. [2021-06-10 14:51:12,316 INFO L130 PetriNetUnfolder]: For 19135/19563 co-relation queries the response was YES. [2021-06-10 14:51:12,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8289 conditions, 2146 events. 281/2146 cut-off events. For 19135/19563 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 26838 event pairs, 104 based on Foata normal form. 8/2064 useless extension candidates. Maximal degree in co-relation 8238. Up to 323 conditions per place. [2021-06-10 14:51:12,339 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 74 selfloop transitions, 61 changer transitions 0/155 dead transitions. [2021-06-10 14:51:12,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 155 transitions, 2608 flow [2021-06-10 14:51:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:12,341 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:12,341 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:12,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:12,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:12,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:12,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:12,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:12,343 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:12,343 INFO L185 Difference]: Start difference. First operand has 119 places, 114 transitions, 1700 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:12,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 155 transitions, 2608 flow [2021-06-10 14:51:12,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 155 transitions, 2496 flow, removed 40 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:12,375 INFO L241 Difference]: Finished difference. Result has 131 places, 132 transitions, 2144 flow [2021-06-10 14:51:12,376 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=1618, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2144, PETRI_PLACES=131, PETRI_TRANSITIONS=132} [2021-06-10 14:51:12,376 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 87 predicate places. [2021-06-10 14:51:12,376 INFO L480 AbstractCegarLoop]: Abstraction has has 131 places, 132 transitions, 2144 flow [2021-06-10 14:51:12,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:12,376 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:12,376 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:12,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-10 14:51:12,376 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:12,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:12,377 INFO L82 PathProgramCache]: Analyzing trace with hash -556585041, now seen corresponding path program 9 times [2021-06-10 14:51:12,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:12,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612745069] [2021-06-10 14:51:12,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:12,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:12,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:12,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:12,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:12,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:12,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:12,410 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:12,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:12,421 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:12,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:12,437 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:12,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:12,456 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:12,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:12,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612745069] [2021-06-10 14:51:12,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:12,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:12,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755631707] [2021-06-10 14:51:12,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:12,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:12,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:12,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:12,477 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:12,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 2144 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:12,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:12,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:12,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:12,797 INFO L129 PetriNetUnfolder]: 280/2231 cut-off events. [2021-06-10 14:51:12,798 INFO L130 PetriNetUnfolder]: For 24874/25277 co-relation queries the response was YES. [2021-06-10 14:51:12,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9321 conditions, 2231 events. 280/2231 cut-off events. For 24874/25277 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 28323 event pairs, 102 based on Foata normal form. 13/2160 useless extension candidates. Maximal degree in co-relation 9264. Up to 325 conditions per place. [2021-06-10 14:51:12,821 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 77 selfloop transitions, 74 changer transitions 0/171 dead transitions. [2021-06-10 14:51:12,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 171 transitions, 3122 flow [2021-06-10 14:51:12,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:12,822 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:12,823 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:12,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:12,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:12,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:12,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:12,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:12,825 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:12,825 INFO L185 Difference]: Start difference. First operand has 131 places, 132 transitions, 2144 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:12,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 171 transitions, 3122 flow [2021-06-10 14:51:12,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 171 transitions, 3022 flow, removed 34 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:12,870 INFO L241 Difference]: Finished difference. Result has 143 places, 154 transitions, 2736 flow [2021-06-10 14:51:12,870 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2736, PETRI_PLACES=143, PETRI_TRANSITIONS=154} [2021-06-10 14:51:12,871 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 99 predicate places. [2021-06-10 14:51:12,871 INFO L480 AbstractCegarLoop]: Abstraction has has 143 places, 154 transitions, 2736 flow [2021-06-10 14:51:12,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:12,871 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:12,871 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:12,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-10 14:51:12,871 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:12,871 INFO L82 PathProgramCache]: Analyzing trace with hash 825274915, now seen corresponding path program 10 times [2021-06-10 14:51:12,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:12,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753746551] [2021-06-10 14:51:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:12,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:12,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:12,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:12,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:12,892 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:12,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:12,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:12,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:12,911 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:12,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:12,927 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:12,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:12,948 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:12,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:12,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753746551] [2021-06-10 14:51:12,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:12,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:12,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317107113] [2021-06-10 14:51:12,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:12,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:12,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:12,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:12,968 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:12,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 154 transitions, 2736 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:12,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:12,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:12,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:13,303 INFO L129 PetriNetUnfolder]: 268/2276 cut-off events. [2021-06-10 14:51:13,303 INFO L130 PetriNetUnfolder]: For 31823/32343 co-relation queries the response was YES. [2021-06-10 14:51:13,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10313 conditions, 2276 events. 268/2276 cut-off events. For 31823/32343 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 29180 event pairs, 146 based on Foata normal form. 15/2208 useless extension candidates. Maximal degree in co-relation 10250. Up to 297 conditions per place. [2021-06-10 14:51:13,330 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 74 selfloop transitions, 91 changer transitions 1/186 dead transitions. [2021-06-10 14:51:13,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 186 transitions, 3678 flow [2021-06-10 14:51:13,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:13,331 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:13,331 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:13,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:13,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:13,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:13,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:13,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:13,333 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:13,333 INFO L185 Difference]: Start difference. First operand has 143 places, 154 transitions, 2736 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:13,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 186 transitions, 3678 flow [2021-06-10 14:51:13,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 186 transitions, 3576 flow, removed 35 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:13,397 INFO L241 Difference]: Finished difference. Result has 155 places, 163 transitions, 3158 flow [2021-06-10 14:51:13,398 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3158, PETRI_PLACES=155, PETRI_TRANSITIONS=163} [2021-06-10 14:51:13,398 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 111 predicate places. [2021-06-10 14:51:13,398 INFO L480 AbstractCegarLoop]: Abstraction has has 155 places, 163 transitions, 3158 flow [2021-06-10 14:51:13,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:13,398 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:13,398 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:13,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-10 14:51:13,398 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:13,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:13,399 INFO L82 PathProgramCache]: Analyzing trace with hash -229281813, now seen corresponding path program 11 times [2021-06-10 14:51:13,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:13,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752341408] [2021-06-10 14:51:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:13,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:13,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:13,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:13,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:13,425 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:13,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:13,432 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:13,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:13,442 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:13,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:13,457 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:13,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:13,481 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:13,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:13,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752341408] [2021-06-10 14:51:13,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:13,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:13,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000424589] [2021-06-10 14:51:13,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:13,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:13,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:13,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:13,500 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:13,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 163 transitions, 3158 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:13,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:13,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:13,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:13,839 INFO L129 PetriNetUnfolder]: 253/2385 cut-off events. [2021-06-10 14:51:13,839 INFO L130 PetriNetUnfolder]: For 38393/39196 co-relation queries the response was YES. [2021-06-10 14:51:13,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11298 conditions, 2385 events. 253/2385 cut-off events. For 38393/39196 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 31332 event pairs, 135 based on Foata normal form. 23/2316 useless extension candidates. Maximal degree in co-relation 11229. Up to 305 conditions per place. [2021-06-10 14:51:13,865 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 75 selfloop transitions, 100 changer transitions 1/196 dead transitions. [2021-06-10 14:51:13,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 196 transitions, 4184 flow [2021-06-10 14:51:13,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:13,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:13,866 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:13,866 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:13,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:13,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:13,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:13,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:13,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:13,869 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:13,869 INFO L185 Difference]: Start difference. First operand has 155 places, 163 transitions, 3158 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:13,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 196 transitions, 4184 flow [2021-06-10 14:51:13,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 196 transitions, 4080 flow, removed 36 selfloop flow, removed 1 redundant places. [2021-06-10 14:51:13,944 INFO L241 Difference]: Finished difference. Result has 166 places, 175 transitions, 3641 flow [2021-06-10 14:51:13,944 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3076, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3641, PETRI_PLACES=166, PETRI_TRANSITIONS=175} [2021-06-10 14:51:13,945 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 122 predicate places. [2021-06-10 14:51:13,945 INFO L480 AbstractCegarLoop]: Abstraction has has 166 places, 175 transitions, 3641 flow [2021-06-10 14:51:13,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:13,945 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:13,945 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:13,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-10 14:51:13,945 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:13,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:13,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1512102735, now seen corresponding path program 12 times [2021-06-10 14:51:13,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:13,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092237608] [2021-06-10 14:51:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:13,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:13,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:13,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:13,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:13,966 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:13,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:13,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:13,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:13,985 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:13,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:14,000 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:14,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:14,020 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:14,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:14,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092237608] [2021-06-10 14:51:14,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:14,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:14,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50397112] [2021-06-10 14:51:14,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:14,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:14,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:14,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:14,041 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:14,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 175 transitions, 3641 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:14,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:14,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:14,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:14,411 INFO L129 PetriNetUnfolder]: 249/2396 cut-off events. [2021-06-10 14:51:14,411 INFO L130 PetriNetUnfolder]: For 43281/44145 co-relation queries the response was YES. [2021-06-10 14:51:14,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11852 conditions, 2396 events. 249/2396 cut-off events. For 43281/44145 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 31624 event pairs, 137 based on Foata normal form. 24/2329 useless extension candidates. Maximal degree in co-relation 11778. Up to 307 conditions per place. [2021-06-10 14:51:14,437 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 77 selfloop transitions, 106 changer transitions 0/203 dead transitions. [2021-06-10 14:51:14,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 203 transitions, 4639 flow [2021-06-10 14:51:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:14,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:14,438 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:14,438 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:14,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:14,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:14,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:14,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:14,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:14,440 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:14,440 INFO L185 Difference]: Start difference. First operand has 166 places, 175 transitions, 3641 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:14,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 203 transitions, 4639 flow [2021-06-10 14:51:14,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 203 transitions, 4413 flow, removed 57 selfloop flow, removed 3 redundant places. [2021-06-10 14:51:14,531 INFO L241 Difference]: Finished difference. Result has 175 places, 185 transitions, 3997 flow [2021-06-10 14:51:14,531 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3448, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3997, PETRI_PLACES=175, PETRI_TRANSITIONS=185} [2021-06-10 14:51:14,531 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 131 predicate places. [2021-06-10 14:51:14,531 INFO L480 AbstractCegarLoop]: Abstraction has has 175 places, 185 transitions, 3997 flow [2021-06-10 14:51:14,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:14,532 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:14,532 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:14,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-10 14:51:14,532 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:14,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:14,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1295517559, now seen corresponding path program 13 times [2021-06-10 14:51:14,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:14,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643494023] [2021-06-10 14:51:14,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:14,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:14,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:14,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:14,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:14,553 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:14,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:14,560 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:14,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:14,570 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:14,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:14,585 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:14,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:14,603 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:14,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:14,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643494023] [2021-06-10 14:51:14,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:14,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:14,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740417336] [2021-06-10 14:51:14,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:14,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:14,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:14,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:14,630 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:14,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 185 transitions, 3997 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:14,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:14,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:14,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:15,017 INFO L129 PetriNetUnfolder]: 248/2402 cut-off events. [2021-06-10 14:51:15,017 INFO L130 PetriNetUnfolder]: For 47755/48636 co-relation queries the response was YES. [2021-06-10 14:51:15,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12328 conditions, 2402 events. 248/2402 cut-off events. For 47755/48636 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 31768 event pairs, 139 based on Foata normal form. 32/2346 useless extension candidates. Maximal degree in co-relation 12250. Up to 303 conditions per place. [2021-06-10 14:51:15,044 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 71 selfloop transitions, 119 changer transitions 0/210 dead transitions. [2021-06-10 14:51:15,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 210 transitions, 4984 flow [2021-06-10 14:51:15,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:15,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:15,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:15,045 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:15,045 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:15,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:15,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:15,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:15,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:15,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:15,047 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:15,047 INFO L185 Difference]: Start difference. First operand has 175 places, 185 transitions, 3997 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:15,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 210 transitions, 4984 flow [2021-06-10 14:51:15,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 210 transitions, 4795 flow, removed 40 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:15,170 INFO L241 Difference]: Finished difference. Result has 185 places, 196 transitions, 4476 flow [2021-06-10 14:51:15,170 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3832, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4476, PETRI_PLACES=185, PETRI_TRANSITIONS=196} [2021-06-10 14:51:15,170 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 141 predicate places. [2021-06-10 14:51:15,170 INFO L480 AbstractCegarLoop]: Abstraction has has 185 places, 196 transitions, 4476 flow [2021-06-10 14:51:15,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:15,170 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:15,170 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:15,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-10 14:51:15,171 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:15,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:15,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1671736541, now seen corresponding path program 14 times [2021-06-10 14:51:15,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:15,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805227951] [2021-06-10 14:51:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:15,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:15,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:15,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:15,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:15,191 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:15,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:15,198 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:15,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:15,209 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:15,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:15,225 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:15,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:15,245 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:15,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:15,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805227951] [2021-06-10 14:51:15,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:15,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:15,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968097313] [2021-06-10 14:51:15,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:15,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:15,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:15,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:15,265 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:15,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 196 transitions, 4476 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:15,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:15,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:15,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:15,681 INFO L129 PetriNetUnfolder]: 245/2434 cut-off events. [2021-06-10 14:51:15,681 INFO L130 PetriNetUnfolder]: For 52872/53753 co-relation queries the response was YES. [2021-06-10 14:51:15,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12960 conditions, 2434 events. 245/2434 cut-off events. For 52872/53753 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 32438 event pairs, 138 based on Foata normal form. 27/2366 useless extension candidates. Maximal degree in co-relation 12877. Up to 307 conditions per place. [2021-06-10 14:51:15,704 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 82 selfloop transitions, 115 changer transitions 0/217 dead transitions. [2021-06-10 14:51:15,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 217 transitions, 5413 flow [2021-06-10 14:51:15,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:15,706 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:15,706 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:15,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:15,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:15,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:15,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:15,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:15,707 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:15,707 INFO L185 Difference]: Start difference. First operand has 185 places, 196 transitions, 4476 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:15,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 217 transitions, 5413 flow [2021-06-10 14:51:15,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 217 transitions, 5226 flow, removed 39 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:15,828 INFO L241 Difference]: Finished difference. Result has 194 places, 206 transitions, 4875 flow [2021-06-10 14:51:15,829 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=4311, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4875, PETRI_PLACES=194, PETRI_TRANSITIONS=206} [2021-06-10 14:51:15,829 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 150 predicate places. [2021-06-10 14:51:15,829 INFO L480 AbstractCegarLoop]: Abstraction has has 194 places, 206 transitions, 4875 flow [2021-06-10 14:51:15,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:15,829 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:15,829 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:15,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-10 14:51:15,829 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:15,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:15,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1575265839, now seen corresponding path program 15 times [2021-06-10 14:51:15,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:15,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091344882] [2021-06-10 14:51:15,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:15,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:15,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:15,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:15,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:15,851 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:15,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:15,859 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:15,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:15,872 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:15,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:15,888 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:15,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:15,907 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:15,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:15,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:15,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091344882] [2021-06-10 14:51:15,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:15,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:15,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472310147] [2021-06-10 14:51:15,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:15,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:15,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:15,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:15,926 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:15,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 206 transitions, 4875 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:15,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:15,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:15,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:16,328 INFO L129 PetriNetUnfolder]: 244/2433 cut-off events. [2021-06-10 14:51:16,328 INFO L130 PetriNetUnfolder]: For 55674/56555 co-relation queries the response was YES. [2021-06-10 14:51:16,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13265 conditions, 2433 events. 244/2433 cut-off events. For 55674/56555 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 32415 event pairs, 139 based on Foata normal form. 32/2373 useless extension candidates. Maximal degree in co-relation 13178. Up to 303 conditions per place. [2021-06-10 14:51:16,355 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 59 selfloop transitions, 141 changer transitions 0/220 dead transitions. [2021-06-10 14:51:16,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 220 transitions, 5661 flow [2021-06-10 14:51:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:16,356 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:16,356 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:16,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:16,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:16,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:16,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:16,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:16,358 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:16,358 INFO L185 Difference]: Start difference. First operand has 194 places, 206 transitions, 4875 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:16,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 220 transitions, 5661 flow [2021-06-10 14:51:16,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 220 transitions, 5425 flow, removed 28 selfloop flow, removed 3 redundant places. [2021-06-10 14:51:16,497 INFO L241 Difference]: Finished difference. Result has 202 places, 212 transitions, 5203 flow [2021-06-10 14:51:16,497 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=4643, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5203, PETRI_PLACES=202, PETRI_TRANSITIONS=212} [2021-06-10 14:51:16,497 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 158 predicate places. [2021-06-10 14:51:16,497 INFO L480 AbstractCegarLoop]: Abstraction has has 202 places, 212 transitions, 5203 flow [2021-06-10 14:51:16,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:16,497 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:16,497 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:16,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-10 14:51:16,498 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:16,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:16,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1969109313, now seen corresponding path program 16 times [2021-06-10 14:51:16,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:16,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945138670] [2021-06-10 14:51:16,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:16,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:16,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:16,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:16,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:16,517 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:16,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:16,523 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:16,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:16,534 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:16,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:16,548 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:16,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:16,566 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:16,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:16,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945138670] [2021-06-10 14:51:16,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:16,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:16,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324477597] [2021-06-10 14:51:16,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:16,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:16,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:16,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:16,584 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:16,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 212 transitions, 5203 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:16,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:16,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:16,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:17,001 INFO L129 PetriNetUnfolder]: 244/2432 cut-off events. [2021-06-10 14:51:17,001 INFO L130 PetriNetUnfolder]: For 58869/59755 co-relation queries the response was YES. [2021-06-10 14:51:17,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13534 conditions, 2432 events. 244/2432 cut-off events. For 58869/59755 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 32408 event pairs, 139 based on Foata normal form. 34/2374 useless extension candidates. Maximal degree in co-relation 13443. Up to 303 conditions per place. [2021-06-10 14:51:17,023 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 60 selfloop transitions, 141 changer transitions 0/221 dead transitions. [2021-06-10 14:51:17,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 221 transitions, 5857 flow [2021-06-10 14:51:17,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:17,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:17,024 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:17,024 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:17,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:17,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:17,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:17,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:17,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:17,026 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:17,026 INFO L185 Difference]: Start difference. First operand has 202 places, 212 transitions, 5203 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:17,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 221 transitions, 5857 flow [2021-06-10 14:51:17,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 221 transitions, 5627 flow, removed 19 selfloop flow, removed 3 redundant places. [2021-06-10 14:51:17,176 INFO L241 Difference]: Finished difference. Result has 209 places, 216 transitions, 5403 flow [2021-06-10 14:51:17,176 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=4979, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5403, PETRI_PLACES=209, PETRI_TRANSITIONS=216} [2021-06-10 14:51:17,176 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 165 predicate places. [2021-06-10 14:51:17,176 INFO L480 AbstractCegarLoop]: Abstraction has has 209 places, 216 transitions, 5403 flow [2021-06-10 14:51:17,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:17,181 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:17,181 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:17,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-10 14:51:17,181 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:17,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:17,181 INFO L82 PathProgramCache]: Analyzing trace with hash -2082727001, now seen corresponding path program 17 times [2021-06-10 14:51:17,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:17,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282298877] [2021-06-10 14:51:17,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:17,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:17,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:17,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:17,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:17,207 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:17,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:17,215 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:17,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:17,229 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:17,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:17,243 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:17,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:17,262 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:17,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:17,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282298877] [2021-06-10 14:51:17,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:17,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:17,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690555607] [2021-06-10 14:51:17,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:17,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:17,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:17,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:17,285 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:17,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 216 transitions, 5403 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:17,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:17,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:17,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:17,774 INFO L129 PetriNetUnfolder]: 240/2469 cut-off events. [2021-06-10 14:51:17,774 INFO L130 PetriNetUnfolder]: For 62500/63386 co-relation queries the response was YES. [2021-06-10 14:51:17,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13991 conditions, 2469 events. 240/2469 cut-off events. For 62500/63386 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 33121 event pairs, 131 based on Foata normal form. 29/2400 useless extension candidates. Maximal degree in co-relation 13897. Up to 311 conditions per place. [2021-06-10 14:51:17,801 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 107 selfloop transitions, 118 changer transitions 0/245 dead transitions. [2021-06-10 14:51:17,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 245 transitions, 6710 flow [2021-06-10 14:51:17,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:17,803 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:17,803 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:17,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:17,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:17,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:17,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:17,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:17,804 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:17,804 INFO L185 Difference]: Start difference. First operand has 209 places, 216 transitions, 5403 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:17,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 245 transitions, 6710 flow [2021-06-10 14:51:17,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 245 transitions, 6407 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:17,982 INFO L241 Difference]: Finished difference. Result has 216 places, 235 transitions, 5994 flow [2021-06-10 14:51:17,983 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=5137, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5994, PETRI_PLACES=216, PETRI_TRANSITIONS=235} [2021-06-10 14:51:17,983 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 172 predicate places. [2021-06-10 14:51:17,983 INFO L480 AbstractCegarLoop]: Abstraction has has 216 places, 235 transitions, 5994 flow [2021-06-10 14:51:17,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:17,983 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:17,983 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:17,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-10 14:51:17,983 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:17,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:17,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1133592585, now seen corresponding path program 18 times [2021-06-10 14:51:17,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:17,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131775197] [2021-06-10 14:51:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:18,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:18,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:18,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:18,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:18,006 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:18,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:18,013 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:18,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:18,025 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:18,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:18,039 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:18,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:18,058 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:18,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:18,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131775197] [2021-06-10 14:51:18,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:18,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:18,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068983911] [2021-06-10 14:51:18,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:18,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:18,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:18,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:18,080 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:18,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 235 transitions, 5994 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:18,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:18,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:18,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:18,542 INFO L129 PetriNetUnfolder]: 239/2475 cut-off events. [2021-06-10 14:51:18,542 INFO L130 PetriNetUnfolder]: For 66304/67164 co-relation queries the response was YES. [2021-06-10 14:51:18,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14276 conditions, 2475 events. 239/2475 cut-off events. For 66304/67164 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 33169 event pairs, 139 based on Foata normal form. 34/2411 useless extension candidates. Maximal degree in co-relation 14178. Up to 303 conditions per place. [2021-06-10 14:51:18,571 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 73 selfloop transitions, 152 changer transitions 0/245 dead transitions. [2021-06-10 14:51:18,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 245 transitions, 6729 flow [2021-06-10 14:51:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:18,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:18,572 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:18,572 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:18,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:18,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:18,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:18,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:18,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:18,573 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:18,574 INFO L185 Difference]: Start difference. First operand has 216 places, 235 transitions, 5994 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:18,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 245 transitions, 6729 flow [2021-06-10 14:51:18,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 245 transitions, 6566 flow, removed 27 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:18,788 INFO L241 Difference]: Finished difference. Result has 224 places, 240 transitions, 6295 flow [2021-06-10 14:51:18,788 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=5831, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6295, PETRI_PLACES=224, PETRI_TRANSITIONS=240} [2021-06-10 14:51:18,789 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 180 predicate places. [2021-06-10 14:51:18,789 INFO L480 AbstractCegarLoop]: Abstraction has has 224 places, 240 transitions, 6295 flow [2021-06-10 14:51:18,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:18,789 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:18,789 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:18,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-10 14:51:18,789 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:18,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:18,789 INFO L82 PathProgramCache]: Analyzing trace with hash -236903151, now seen corresponding path program 19 times [2021-06-10 14:51:18,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:18,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321530942] [2021-06-10 14:51:18,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:18,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:18,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:18,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:18,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:18,807 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:18,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:18,815 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:18,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:18,825 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:18,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:18,838 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:18,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:18,859 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:18,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:18,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321530942] [2021-06-10 14:51:18,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:18,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:18,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103537134] [2021-06-10 14:51:18,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:18,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:18,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:18,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:18,880 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:18,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 240 transitions, 6295 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:18,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:18,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:18,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:19,311 INFO L129 PetriNetUnfolder]: 239/2474 cut-off events. [2021-06-10 14:51:19,312 INFO L130 PetriNetUnfolder]: For 69567/70466 co-relation queries the response was YES. [2021-06-10 14:51:19,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14596 conditions, 2474 events. 239/2474 cut-off events. For 69567/70466 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 33146 event pairs, 139 based on Foata normal form. 34/2410 useless extension candidates. Maximal degree in co-relation 14495. Up to 303 conditions per place. [2021-06-10 14:51:19,339 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 78 selfloop transitions, 152 changer transitions 0/250 dead transitions. [2021-06-10 14:51:19,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 250 transitions, 7083 flow [2021-06-10 14:51:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:19,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:19,340 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:19,340 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:19,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:19,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:19,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:19,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:19,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:19,342 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:19,342 INFO L185 Difference]: Start difference. First operand has 224 places, 240 transitions, 6295 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:19,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 250 transitions, 7083 flow [2021-06-10 14:51:19,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 250 transitions, 6796 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:19,548 INFO L241 Difference]: Finished difference. Result has 230 places, 242 transitions, 6475 flow [2021-06-10 14:51:19,548 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=6009, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6475, PETRI_PLACES=230, PETRI_TRANSITIONS=242} [2021-06-10 14:51:19,548 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 186 predicate places. [2021-06-10 14:51:19,548 INFO L480 AbstractCegarLoop]: Abstraction has has 230 places, 242 transitions, 6475 flow [2021-06-10 14:51:19,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:19,549 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:19,549 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:19,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-10 14:51:19,549 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:19,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:19,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1271031557, now seen corresponding path program 20 times [2021-06-10 14:51:19,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:19,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240845615] [2021-06-10 14:51:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:19,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:19,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:19,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:19,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:19,564 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:19,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:19,570 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:19,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:19,584 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:19,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:19,597 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:19,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:19,613 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:19,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:19,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240845615] [2021-06-10 14:51:19,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:19,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:19,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002845979] [2021-06-10 14:51:19,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:19,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:19,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:19,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:19,633 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:19,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 242 transitions, 6475 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:19,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:19,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:19,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:20,059 INFO L129 PetriNetUnfolder]: 239/2473 cut-off events. [2021-06-10 14:51:20,059 INFO L130 PetriNetUnfolder]: For 73823/74817 co-relation queries the response was YES. [2021-06-10 14:51:20,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14823 conditions, 2473 events. 239/2473 cut-off events. For 73823/74817 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 33144 event pairs, 139 based on Foata normal form. 38/2413 useless extension candidates. Maximal degree in co-relation 14719. Up to 303 conditions per place. [2021-06-10 14:51:20,087 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 78 selfloop transitions, 152 changer transitions 0/250 dead transitions. [2021-06-10 14:51:20,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 250 transitions, 7203 flow [2021-06-10 14:51:20,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:20,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:20,089 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:20,089 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:20,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:20,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:20,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:20,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,090 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,090 INFO L185 Difference]: Start difference. First operand has 230 places, 242 transitions, 6475 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:20,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 250 transitions, 7203 flow [2021-06-10 14:51:20,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 250 transitions, 6965 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-06-10 14:51:20,298 INFO L241 Difference]: Finished difference. Result has 234 places, 246 transitions, 6688 flow [2021-06-10 14:51:20,298 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=6237, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6688, PETRI_PLACES=234, PETRI_TRANSITIONS=246} [2021-06-10 14:51:20,298 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places. [2021-06-10 14:51:20,298 INFO L480 AbstractCegarLoop]: Abstraction has has 234 places, 246 transitions, 6688 flow [2021-06-10 14:51:20,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,299 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:20,299 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:20,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-10 14:51:20,299 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:20,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:20,299 INFO L82 PathProgramCache]: Analyzing trace with hash 2130320013, now seen corresponding path program 21 times [2021-06-10 14:51:20,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:20,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260600671] [2021-06-10 14:51:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:20,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:20,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:20,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:20,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:20,316 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:20,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:20,323 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:20,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:20,332 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:51:20,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:51:20,354 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:20,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:20,371 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:20,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:20,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260600671] [2021-06-10 14:51:20,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:20,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:20,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209387350] [2021-06-10 14:51:20,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:20,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:20,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:20,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:20,389 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:20,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 246 transitions, 6688 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:20,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:20,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:20,848 INFO L129 PetriNetUnfolder]: 234/2521 cut-off events. [2021-06-10 14:51:20,848 INFO L130 PetriNetUnfolder]: For 78256/79228 co-relation queries the response was YES. [2021-06-10 14:51:20,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15319 conditions, 2521 events. 234/2521 cut-off events. For 78256/79228 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 34138 event pairs, 126 based on Foata normal form. 29/2445 useless extension candidates. Maximal degree in co-relation 15215. Up to 313 conditions per place. [2021-06-10 14:51:20,875 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 127 selfloop transitions, 124 changer transitions 0/271 dead transitions. [2021-06-10 14:51:20,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 271 transitions, 7955 flow [2021-06-10 14:51:20,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:20,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:20,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:20,876 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:20,877 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:20,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:20,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:20,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:20,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,878 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:20,878 INFO L185 Difference]: Start difference. First operand has 234 places, 246 transitions, 6688 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:20,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 271 transitions, 7955 flow [2021-06-10 14:51:21,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 271 transitions, 7668 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:21,122 INFO L241 Difference]: Finished difference. Result has 241 places, 255 transitions, 7013 flow [2021-06-10 14:51:21,122 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=6412, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7013, PETRI_PLACES=241, PETRI_TRANSITIONS=255} [2021-06-10 14:51:21,122 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 197 predicate places. [2021-06-10 14:51:21,122 INFO L480 AbstractCegarLoop]: Abstraction has has 241 places, 255 transitions, 7013 flow [2021-06-10 14:51:21,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,122 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:21,123 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:21,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-10 14:51:21,123 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:21,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:21,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1330795047, now seen corresponding path program 22 times [2021-06-10 14:51:21,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:21,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067203347] [2021-06-10 14:51:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:21,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:21,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:21,138 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:21,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:21,146 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:21,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:21,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:21,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:21,169 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:21,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:21,186 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:21,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:21,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067203347] [2021-06-10 14:51:21,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:21,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:21,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110330515] [2021-06-10 14:51:21,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:21,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:21,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:21,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:21,205 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:21,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 255 transitions, 7013 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:21,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:21,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:21,694 INFO L129 PetriNetUnfolder]: 232/2529 cut-off events. [2021-06-10 14:51:21,694 INFO L130 PetriNetUnfolder]: For 83840/84812 co-relation queries the response was YES. [2021-06-10 14:51:21,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15655 conditions, 2529 events. 232/2529 cut-off events. For 83840/84812 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 34327 event pairs, 132 based on Foata normal form. 29/2455 useless extension candidates. Maximal degree in co-relation 15547. Up to 308 conditions per place. [2021-06-10 14:51:21,723 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 111 selfloop transitions, 134 changer transitions 0/265 dead transitions. [2021-06-10 14:51:21,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 265 transitions, 7847 flow [2021-06-10 14:51:21,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:21,724 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:21,724 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:21,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:21,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:21,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:21,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,726 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,726 INFO L185 Difference]: Start difference. First operand has 241 places, 255 transitions, 7013 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:21,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 265 transitions, 7847 flow [2021-06-10 14:51:21,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 265 transitions, 7718 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:21,965 INFO L241 Difference]: Finished difference. Result has 249 places, 258 transitions, 7273 flow [2021-06-10 14:51:21,965 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=6884, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7273, PETRI_PLACES=249, PETRI_TRANSITIONS=258} [2021-06-10 14:51:21,965 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 205 predicate places. [2021-06-10 14:51:21,965 INFO L480 AbstractCegarLoop]: Abstraction has has 249 places, 258 transitions, 7273 flow [2021-06-10 14:51:21,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:21,966 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:21,966 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:21,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-10 14:51:21,966 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:21,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:21,966 INFO L82 PathProgramCache]: Analyzing trace with hash -80003079, now seen corresponding path program 23 times [2021-06-10 14:51:21,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:21,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725374865] [2021-06-10 14:51:21,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:21,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:21,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:21,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:21,984 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:21,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:21,996 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:21,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:22,006 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:51:22,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:51:22,029 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:22,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:22,049 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:22,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:22,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725374865] [2021-06-10 14:51:22,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:22,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:22,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147370133] [2021-06-10 14:51:22,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:22,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:22,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:22,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:22,067 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:22,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 258 transitions, 7273 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:22,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:22,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:22,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:22,591 INFO L129 PetriNetUnfolder]: 232/2528 cut-off events. [2021-06-10 14:51:22,591 INFO L130 PetriNetUnfolder]: For 88136/89096 co-relation queries the response was YES. [2021-06-10 14:51:22,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16016 conditions, 2528 events. 232/2528 cut-off events. For 88136/89096 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 34246 event pairs, 132 based on Foata normal form. 29/2454 useless extension candidates. Maximal degree in co-relation 15905. Up to 308 conditions per place. [2021-06-10 14:51:22,622 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 112 selfloop transitions, 139 changer transitions 0/271 dead transitions. [2021-06-10 14:51:22,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 271 transitions, 8233 flow [2021-06-10 14:51:22,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:22,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:22,623 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:22,623 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:22,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:22,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:22,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:22,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:22,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:22,624 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:22,624 INFO L185 Difference]: Start difference. First operand has 249 places, 258 transitions, 7273 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:22,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 271 transitions, 8233 flow [2021-06-10 14:51:22,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 271 transitions, 7972 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:22,878 INFO L241 Difference]: Finished difference. Result has 255 places, 265 transitions, 7607 flow [2021-06-10 14:51:22,878 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=7016, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7607, PETRI_PLACES=255, PETRI_TRANSITIONS=265} [2021-06-10 14:51:22,878 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 211 predicate places. [2021-06-10 14:51:22,878 INFO L480 AbstractCegarLoop]: Abstraction has has 255 places, 265 transitions, 7607 flow [2021-06-10 14:51:22,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:22,878 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:22,879 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:22,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-10 14:51:22,879 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:22,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:22,879 INFO L82 PathProgramCache]: Analyzing trace with hash 2062180963, now seen corresponding path program 24 times [2021-06-10 14:51:22,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:22,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781023522] [2021-06-10 14:51:22,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:22,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:22,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:22,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:22,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:22,901 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:22,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:22,908 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:22,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:22,919 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:51:22,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:51:22,941 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:22,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:22,960 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:22,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:22,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781023522] [2021-06-10 14:51:22,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:22,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:22,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513752501] [2021-06-10 14:51:22,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:22,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:22,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:22,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:22,988 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:22,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 265 transitions, 7607 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:22,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:22,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:22,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:23,473 INFO L129 PetriNetUnfolder]: 232/2527 cut-off events. [2021-06-10 14:51:23,474 INFO L130 PetriNetUnfolder]: For 93335/94295 co-relation queries the response was YES. [2021-06-10 14:51:23,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16265 conditions, 2527 events. 232/2527 cut-off events. For 93335/94295 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 34174 event pairs, 132 based on Foata normal form. 29/2453 useless extension candidates. Maximal degree in co-relation 16151. Up to 308 conditions per place. [2021-06-10 14:51:23,505 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 112 selfloop transitions, 139 changer transitions 0/271 dead transitions. [2021-06-10 14:51:23,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 271 transitions, 8355 flow [2021-06-10 14:51:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:23,506 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:23,506 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:23,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:23,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:23,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:23,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:23,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:23,508 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:23,508 INFO L185 Difference]: Start difference. First operand has 255 places, 265 transitions, 7607 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:23,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 271 transitions, 8355 flow [2021-06-10 14:51:23,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 271 transitions, 8128 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-06-10 14:51:23,826 INFO L241 Difference]: Finished difference. Result has 259 places, 267 transitions, 7752 flow [2021-06-10 14:51:23,826 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=7380, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7752, PETRI_PLACES=259, PETRI_TRANSITIONS=267} [2021-06-10 14:51:23,826 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 215 predicate places. [2021-06-10 14:51:23,826 INFO L480 AbstractCegarLoop]: Abstraction has has 259 places, 267 transitions, 7752 flow [2021-06-10 14:51:23,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:23,826 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:23,827 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:23,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-10 14:51:23,827 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:23,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:23,827 INFO L82 PathProgramCache]: Analyzing trace with hash -240544189, now seen corresponding path program 25 times [2021-06-10 14:51:23,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:23,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856773765] [2021-06-10 14:51:23,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:23,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:23,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:23,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:23,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:23,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:23,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:23,848 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:23,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:23,858 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:23,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:23,872 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:23,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:23,889 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:23,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:23,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856773765] [2021-06-10 14:51:23,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:23,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:23,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794407476] [2021-06-10 14:51:23,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:23,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:23,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:23,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:23,911 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:23,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 267 transitions, 7752 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:23,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:23,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:23,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:24,368 INFO L129 PetriNetUnfolder]: 232/2526 cut-off events. [2021-06-10 14:51:24,369 INFO L130 PetriNetUnfolder]: For 96964/97928 co-relation queries the response was YES. [2021-06-10 14:51:24,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16498 conditions, 2526 events. 232/2526 cut-off events. For 96964/97928 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 34179 event pairs, 132 based on Foata normal form. 31/2454 useless extension candidates. Maximal degree in co-relation 16384. Up to 308 conditions per place. [2021-06-10 14:51:24,400 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 110 selfloop transitions, 141 changer transitions 0/271 dead transitions. [2021-06-10 14:51:24,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 271 transitions, 8446 flow [2021-06-10 14:51:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:24,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:24,401 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:24,402 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:24,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:24,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:24,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:24,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:24,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:24,403 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:24,403 INFO L185 Difference]: Start difference. First operand has 259 places, 267 transitions, 7752 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:24,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 271 transitions, 8446 flow [2021-06-10 14:51:24,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 271 transitions, 8199 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:24,697 INFO L241 Difference]: Finished difference. Result has 263 places, 267 transitions, 7790 flow [2021-06-10 14:51:24,697 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=7505, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7790, PETRI_PLACES=263, PETRI_TRANSITIONS=267} [2021-06-10 14:51:24,697 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 219 predicate places. [2021-06-10 14:51:24,697 INFO L480 AbstractCegarLoop]: Abstraction has has 263 places, 267 transitions, 7790 flow [2021-06-10 14:51:24,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:24,698 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:24,698 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:24,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-10 14:51:24,698 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:24,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:24,698 INFO L82 PathProgramCache]: Analyzing trace with hash 670342223, now seen corresponding path program 26 times [2021-06-10 14:51:24,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:24,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882464510] [2021-06-10 14:51:24,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:24,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:24,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:24,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:24,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:24,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:24,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:24,724 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:24,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:24,734 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:24,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:24,768 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:24,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:24,788 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:24,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:24,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882464510] [2021-06-10 14:51:24,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:24,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:24,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055510234] [2021-06-10 14:51:24,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:24,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:24,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:24,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:24,807 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:24,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 267 transitions, 7790 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:24,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:24,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:24,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:25,382 INFO L129 PetriNetUnfolder]: 226/2575 cut-off events. [2021-06-10 14:51:25,382 INFO L130 PetriNetUnfolder]: For 103335/104299 co-relation queries the response was YES. [2021-06-10 14:51:25,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17008 conditions, 2575 events. 226/2575 cut-off events. For 103335/104299 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 35136 event pairs, 126 based on Foata normal form. 31/2500 useless extension candidates. Maximal degree in co-relation 16893. Up to 315 conditions per place. [2021-06-10 14:51:25,410 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 130 selfloop transitions, 128 changer transitions 0/278 dead transitions. [2021-06-10 14:51:25,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 278 transitions, 8737 flow [2021-06-10 14:51:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:25,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:25,411 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:25,411 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:25,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:25,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:25,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:25,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:25,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:25,412 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:25,412 INFO L185 Difference]: Start difference. First operand has 263 places, 267 transitions, 7790 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:25,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 278 transitions, 8737 flow [2021-06-10 14:51:25,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 278 transitions, 8474 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:25,696 INFO L241 Difference]: Finished difference. Result has 270 places, 273 transitions, 8070 flow [2021-06-10 14:51:25,696 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=7532, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8070, PETRI_PLACES=270, PETRI_TRANSITIONS=273} [2021-06-10 14:51:25,697 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 226 predicate places. [2021-06-10 14:51:25,697 INFO L480 AbstractCegarLoop]: Abstraction has has 270 places, 273 transitions, 8070 flow [2021-06-10 14:51:25,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:25,697 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:25,697 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:25,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-10 14:51:25,697 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:25,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:25,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1911195733, now seen corresponding path program 27 times [2021-06-10 14:51:25,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:25,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234201771] [2021-06-10 14:51:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:25,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:25,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:25,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:25,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:25,713 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:25,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:25,719 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:25,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:25,728 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:25,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:25,741 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:25,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:25,759 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:25,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:25,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234201771] [2021-06-10 14:51:25,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:25,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:25,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052690344] [2021-06-10 14:51:25,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:25,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:25,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:25,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:25,776 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:25,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 273 transitions, 8070 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:25,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:25,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:25,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:26,278 INFO L129 PetriNetUnfolder]: 226/2574 cut-off events. [2021-06-10 14:51:26,278 INFO L130 PetriNetUnfolder]: For 108869/109726 co-relation queries the response was YES. [2021-06-10 14:51:26,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17243 conditions, 2574 events. 226/2574 cut-off events. For 108869/109726 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 35121 event pairs, 126 based on Foata normal form. 31/2499 useless extension candidates. Maximal degree in co-relation 17124. Up to 313 conditions per place. [2021-06-10 14:51:26,311 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 130 selfloop transitions, 134 changer transitions 0/284 dead transitions. [2021-06-10 14:51:26,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 284 transitions, 9018 flow [2021-06-10 14:51:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:26,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:26,312 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:26,312 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:26,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:26,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:26,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:26,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:26,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:26,313 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:26,313 INFO L185 Difference]: Start difference. First operand has 270 places, 273 transitions, 8070 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:26,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 284 transitions, 9018 flow [2021-06-10 14:51:26,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 284 transitions, 8743 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:26,622 INFO L241 Difference]: Finished difference. Result has 275 places, 279 transitions, 8308 flow [2021-06-10 14:51:26,622 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=7807, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8308, PETRI_PLACES=275, PETRI_TRANSITIONS=279} [2021-06-10 14:51:26,623 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 231 predicate places. [2021-06-10 14:51:26,623 INFO L480 AbstractCegarLoop]: Abstraction has has 275 places, 279 transitions, 8308 flow [2021-06-10 14:51:26,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:26,623 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:26,623 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:26,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-10 14:51:26,623 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:26,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:26,623 INFO L82 PathProgramCache]: Analyzing trace with hash -696529793, now seen corresponding path program 28 times [2021-06-10 14:51:26,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:26,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455974482] [2021-06-10 14:51:26,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:26,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:26,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:26,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:26,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:26,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:26,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:26,671 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:26,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:26,683 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:51:26,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:51:26,713 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:26,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:26,737 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:26,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:26,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455974482] [2021-06-10 14:51:26,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:26,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:26,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959228298] [2021-06-10 14:51:26,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:26,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:26,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:26,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:26,759 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:26,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 279 transitions, 8308 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:26,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:26,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:26,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:27,248 INFO L129 PetriNetUnfolder]: 226/2573 cut-off events. [2021-06-10 14:51:27,248 INFO L130 PetriNetUnfolder]: For 113683/114587 co-relation queries the response was YES. [2021-06-10 14:51:27,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17458 conditions, 2573 events. 226/2573 cut-off events. For 113683/114587 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 35140 event pairs, 126 based on Foata normal form. 29/2496 useless extension candidates. Maximal degree in co-relation 17337. Up to 313 conditions per place. [2021-06-10 14:51:27,282 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 133 selfloop transitions, 130 changer transitions 0/283 dead transitions. [2021-06-10 14:51:27,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 283 transitions, 9050 flow [2021-06-10 14:51:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:27,283 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:27,283 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:27,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:27,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:27,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:27,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:27,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:27,284 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:27,284 INFO L185 Difference]: Start difference. First operand has 275 places, 279 transitions, 8308 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:27,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 283 transitions, 9050 flow [2021-06-10 14:51:27,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 283 transitions, 8814 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-06-10 14:51:27,644 INFO L241 Difference]: Finished difference. Result has 278 places, 279 transitions, 8335 flow [2021-06-10 14:51:27,644 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=8072, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8335, PETRI_PLACES=278, PETRI_TRANSITIONS=279} [2021-06-10 14:51:27,644 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 234 predicate places. [2021-06-10 14:51:27,644 INFO L480 AbstractCegarLoop]: Abstraction has has 278 places, 279 transitions, 8335 flow [2021-06-10 14:51:27,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:27,645 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:27,645 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:27,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-10 14:51:27,645 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:27,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:27,645 INFO L82 PathProgramCache]: Analyzing trace with hash 25804891, now seen corresponding path program 29 times [2021-06-10 14:51:27,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:27,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868637431] [2021-06-10 14:51:27,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:27,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:27,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:27,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:27,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:27,659 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:27,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:27,666 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:27,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:27,676 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:27,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:27,689 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:27,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:27,707 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:27,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:27,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868637431] [2021-06-10 14:51:27,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:27,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:27,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425834111] [2021-06-10 14:51:27,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:27,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:27,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:27,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:27,726 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:27,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 279 transitions, 8335 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:27,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:27,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:27,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:28,255 INFO L129 PetriNetUnfolder]: 226/2572 cut-off events. [2021-06-10 14:51:28,255 INFO L130 PetriNetUnfolder]: For 117301/118205 co-relation queries the response was YES. [2021-06-10 14:51:28,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17685 conditions, 2572 events. 226/2572 cut-off events. For 117301/118205 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 35088 event pairs, 126 based on Foata normal form. 29/2495 useless extension candidates. Maximal degree in co-relation 17565. Up to 313 conditions per place. [2021-06-10 14:51:28,284 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 132 selfloop transitions, 132 changer transitions 0/284 dead transitions. [2021-06-10 14:51:28,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 284 transitions, 9121 flow [2021-06-10 14:51:28,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:28,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:28,285 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:28,285 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:28,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:28,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:28,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:28,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:28,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:28,286 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:28,287 INFO L185 Difference]: Start difference. First operand has 278 places, 279 transitions, 8335 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:28,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 284 transitions, 9121 flow [2021-06-10 14:51:28,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 284 transitions, 8779 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:51:28,701 INFO L241 Difference]: Finished difference. Result has 281 places, 280 transitions, 8321 flow [2021-06-10 14:51:28,701 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=7994, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8321, PETRI_PLACES=281, PETRI_TRANSITIONS=280} [2021-06-10 14:51:28,701 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 237 predicate places. [2021-06-10 14:51:28,701 INFO L480 AbstractCegarLoop]: Abstraction has has 281 places, 280 transitions, 8321 flow [2021-06-10 14:51:28,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:28,702 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:28,702 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:28,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-10 14:51:28,702 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:28,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:28,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1827192731, now seen corresponding path program 30 times [2021-06-10 14:51:28,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:28,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031319758] [2021-06-10 14:51:28,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:28,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:28,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:28,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:28,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:28,716 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:28,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:28,723 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:28,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:28,732 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:28,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:28,745 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:28,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:28,768 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:28,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:28,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031319758] [2021-06-10 14:51:28,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:28,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:28,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595791529] [2021-06-10 14:51:28,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:28,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:28,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:28,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:28,787 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:28,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 280 transitions, 8321 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:28,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:28,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:28,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:29,290 INFO L129 PetriNetUnfolder]: 226/2571 cut-off events. [2021-06-10 14:51:29,290 INFO L130 PetriNetUnfolder]: For 120697/121605 co-relation queries the response was YES. [2021-06-10 14:51:29,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17765 conditions, 2571 events. 226/2571 cut-off events. For 120697/121605 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 35078 event pairs, 126 based on Foata normal form. 31/2496 useless extension candidates. Maximal degree in co-relation 17644. Up to 313 conditions per place. [2021-06-10 14:51:29,324 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 128 selfloop transitions, 136 changer transitions 0/284 dead transitions. [2021-06-10 14:51:29,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 284 transitions, 9081 flow [2021-06-10 14:51:29,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:29,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:29,325 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:29,325 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:29,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:29,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:29,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:29,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:29,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:29,326 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:29,326 INFO L185 Difference]: Start difference. First operand has 281 places, 280 transitions, 8321 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:29,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 284 transitions, 9081 flow [2021-06-10 14:51:29,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 284 transitions, 8844 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:29,748 INFO L241 Difference]: Finished difference. Result has 285 places, 280 transitions, 8359 flow [2021-06-10 14:51:29,748 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=8084, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8359, PETRI_PLACES=285, PETRI_TRANSITIONS=280} [2021-06-10 14:51:29,748 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 241 predicate places. [2021-06-10 14:51:29,748 INFO L480 AbstractCegarLoop]: Abstraction has has 285 places, 280 transitions, 8359 flow [2021-06-10 14:51:29,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:29,749 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:29,749 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:29,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-10 14:51:29,749 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:29,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:29,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1729281869, now seen corresponding path program 31 times [2021-06-10 14:51:29,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:29,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651475250] [2021-06-10 14:51:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:29,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:29,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:29,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:29,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:29,769 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:29,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:29,775 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:29,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:29,787 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:29,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:29,801 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:29,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:29,819 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:29,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:29,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651475250] [2021-06-10 14:51:29,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:29,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:29,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799296957] [2021-06-10 14:51:29,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:29,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:29,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:29,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:29,838 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:29,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 280 transitions, 8359 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:29,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:29,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:29,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:30,351 INFO L129 PetriNetUnfolder]: 226/2570 cut-off events. [2021-06-10 14:51:30,351 INFO L130 PetriNetUnfolder]: For 125034/125942 co-relation queries the response was YES. [2021-06-10 14:51:30,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17930 conditions, 2570 events. 226/2570 cut-off events. For 125034/125942 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 35093 event pairs, 126 based on Foata normal form. 31/2495 useless extension candidates. Maximal degree in co-relation 17808. Up to 315 conditions per place. [2021-06-10 14:51:30,383 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 131 selfloop transitions, 133 changer transitions 0/284 dead transitions. [2021-06-10 14:51:30,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 284 transitions, 9127 flow [2021-06-10 14:51:30,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:30,384 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:30,384 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:30,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:30,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:30,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:30,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:30,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:30,386 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:30,386 INFO L185 Difference]: Start difference. First operand has 285 places, 280 transitions, 8359 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:30,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 284 transitions, 9127 flow [2021-06-10 14:51:30,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 284 transitions, 8886 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:30,826 INFO L241 Difference]: Finished difference. Result has 289 places, 280 transitions, 8387 flow [2021-06-10 14:51:30,827 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=8118, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8387, PETRI_PLACES=289, PETRI_TRANSITIONS=280} [2021-06-10 14:51:30,827 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 245 predicate places. [2021-06-10 14:51:30,827 INFO L480 AbstractCegarLoop]: Abstraction has has 289 places, 280 transitions, 8387 flow [2021-06-10 14:51:30,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:30,827 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:30,827 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:30,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-10 14:51:30,827 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:30,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:30,827 INFO L82 PathProgramCache]: Analyzing trace with hash -303215523, now seen corresponding path program 32 times [2021-06-10 14:51:30,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:30,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125681876] [2021-06-10 14:51:30,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:30,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:30,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:30,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:30,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:30,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:30,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:30,852 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:30,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:30,862 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:30,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:30,875 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:30,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:30,894 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:30,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:30,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125681876] [2021-06-10 14:51:30,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:30,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:30,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88009515] [2021-06-10 14:51:30,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:30,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:30,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:30,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:30,914 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:30,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 280 transitions, 8387 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:30,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:30,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:30,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:31,480 INFO L129 PetriNetUnfolder]: 226/2569 cut-off events. [2021-06-10 14:51:31,480 INFO L130 PetriNetUnfolder]: For 129181/129982 co-relation queries the response was YES. [2021-06-10 14:51:31,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18093 conditions, 2569 events. 226/2569 cut-off events. For 129181/129982 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 35059 event pairs, 126 based on Foata normal form. 31/2494 useless extension candidates. Maximal degree in co-relation 17970. Up to 315 conditions per place. [2021-06-10 14:51:31,518 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 119 selfloop transitions, 145 changer transitions 0/284 dead transitions. [2021-06-10 14:51:31,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 284 transitions, 9163 flow [2021-06-10 14:51:31,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:31,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:31,520 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:31,520 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:31,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:31,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:31,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:31,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:31,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:31,521 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:31,521 INFO L185 Difference]: Start difference. First operand has 289 places, 280 transitions, 8387 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:31,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 284 transitions, 9163 flow [2021-06-10 14:51:32,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 284 transitions, 8896 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-06-10 14:51:32,040 INFO L241 Difference]: Finished difference. Result has 292 places, 280 transitions, 8413 flow [2021-06-10 14:51:32,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=8120, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8413, PETRI_PLACES=292, PETRI_TRANSITIONS=280} [2021-06-10 14:51:32,040 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 248 predicate places. [2021-06-10 14:51:32,040 INFO L480 AbstractCegarLoop]: Abstraction has has 292 places, 280 transitions, 8413 flow [2021-06-10 14:51:32,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:32,041 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:32,041 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:32,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-10 14:51:32,041 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:32,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:32,041 INFO L82 PathProgramCache]: Analyzing trace with hash -421617147, now seen corresponding path program 33 times [2021-06-10 14:51:32,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:32,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336483751] [2021-06-10 14:51:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:32,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:32,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:32,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:32,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:32,056 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:51:32,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:51:32,063 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:51:32,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:51:32,074 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:32,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:32,090 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:32,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:32,110 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:32,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:32,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336483751] [2021-06-10 14:51:32,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:32,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:32,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817632928] [2021-06-10 14:51:32,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:32,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:32,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:32,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:32,129 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:32,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 280 transitions, 8413 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:32,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:32,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:32,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:32,659 INFO L129 PetriNetUnfolder]: 226/2568 cut-off events. [2021-06-10 14:51:32,660 INFO L130 PetriNetUnfolder]: For 133153/133959 co-relation queries the response was YES. [2021-06-10 14:51:32,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18248 conditions, 2568 events. 226/2568 cut-off events. For 133153/133959 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 35069 event pairs, 126 based on Foata normal form. 29/2491 useless extension candidates. Maximal degree in co-relation 18125. Up to 315 conditions per place. [2021-06-10 14:51:32,694 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 112 selfloop transitions, 110 changer transitions 42/284 dead transitions. [2021-06-10 14:51:32,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 284 transitions, 9197 flow [2021-06-10 14:51:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:32,695 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:32,695 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:32,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:32,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:32,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:32,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:32,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:32,697 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:32,697 INFO L185 Difference]: Start difference. First operand has 292 places, 280 transitions, 8413 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:32,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 284 transitions, 9197 flow [2021-06-10 14:51:33,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 284 transitions, 8917 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-06-10 14:51:33,190 INFO L241 Difference]: Finished difference. Result has 295 places, 238 transitions, 6676 flow [2021-06-10 14:51:33,190 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=8133, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6676, PETRI_PLACES=295, PETRI_TRANSITIONS=238} [2021-06-10 14:51:33,190 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 251 predicate places. [2021-06-10 14:51:33,190 INFO L480 AbstractCegarLoop]: Abstraction has has 295 places, 238 transitions, 6676 flow [2021-06-10 14:51:33,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:33,190 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:33,191 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:33,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-10 14:51:33,191 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:33,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:33,191 INFO L82 PathProgramCache]: Analyzing trace with hash 93996597, now seen corresponding path program 34 times [2021-06-10 14:51:33,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:33,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831200317] [2021-06-10 14:51:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:33,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:33,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:33,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:33,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:33,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:33,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:33,213 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:33,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:33,222 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:33,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:33,235 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:33,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:33,253 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:33,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:33,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831200317] [2021-06-10 14:51:33,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:33,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:33,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245110987] [2021-06-10 14:51:33,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:33,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:33,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:33,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:33,271 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:33,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 238 transitions, 6676 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:33,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:33,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:33,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:33,728 INFO L129 PetriNetUnfolder]: 226/2422 cut-off events. [2021-06-10 14:51:33,729 INFO L130 PetriNetUnfolder]: For 132653/133453 co-relation queries the response was YES. [2021-06-10 14:51:33,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17327 conditions, 2422 events. 226/2422 cut-off events. For 132653/133453 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 32439 event pairs, 81 based on Foata normal form. 31/2356 useless extension candidates. Maximal degree in co-relation 17204. Up to 339 conditions per place. [2021-06-10 14:51:33,761 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 115 selfloop transitions, 119 changer transitions 0/254 dead transitions. [2021-06-10 14:51:33,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 254 transitions, 7799 flow [2021-06-10 14:51:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:33,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:33,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:33,764 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:33,764 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:33,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:33,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:33,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:33,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:33,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:33,781 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:33,781 INFO L185 Difference]: Start difference. First operand has 295 places, 238 transitions, 6676 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:33,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 254 transitions, 7799 flow [2021-06-10 14:51:34,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 254 transitions, 7296 flow, removed 125 selfloop flow, removed 37 redundant places. [2021-06-10 14:51:34,146 INFO L241 Difference]: Finished difference. Result has 244 places, 246 transitions, 6940 flow [2021-06-10 14:51:34,147 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=6367, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6940, PETRI_PLACES=244, PETRI_TRANSITIONS=246} [2021-06-10 14:51:34,147 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 200 predicate places. [2021-06-10 14:51:34,147 INFO L480 AbstractCegarLoop]: Abstraction has has 244 places, 246 transitions, 6940 flow [2021-06-10 14:51:34,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:34,147 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:34,147 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:34,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-10 14:51:34,147 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:34,148 INFO L82 PathProgramCache]: Analyzing trace with hash 378506601, now seen corresponding path program 35 times [2021-06-10 14:51:34,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:34,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225630820] [2021-06-10 14:51:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:34,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:34,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:34,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:34,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:34,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:34,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:34,174 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:34,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:34,191 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:51:34,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:51:34,219 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:34,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:34,244 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:34,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:34,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225630820] [2021-06-10 14:51:34,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:34,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:34,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072962440] [2021-06-10 14:51:34,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:34,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:34,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:34,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:34,262 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:34,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 246 transitions, 6940 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:34,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:34,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:34,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:34,700 INFO L129 PetriNetUnfolder]: 230/2586 cut-off events. [2021-06-10 14:51:34,700 INFO L130 PetriNetUnfolder]: For 58370/59196 co-relation queries the response was YES. [2021-06-10 14:51:34,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14367 conditions, 2586 events. 230/2586 cut-off events. For 58370/59196 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 35268 event pairs, 75 based on Foata normal form. 18/2502 useless extension candidates. Maximal degree in co-relation 14272. Up to 341 conditions per place. [2021-06-10 14:51:34,731 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 175 selfloop transitions, 103 changer transitions 1/299 dead transitions. [2021-06-10 14:51:34,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 299 transitions, 8952 flow [2021-06-10 14:51:34,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:34,732 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:34,732 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:34,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:34,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:34,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:34,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:34,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:34,733 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:34,733 INFO L185 Difference]: Start difference. First operand has 244 places, 246 transitions, 6940 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:34,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 299 transitions, 8952 flow [2021-06-10 14:51:34,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 299 transitions, 8610 flow, removed 63 selfloop flow, removed 3 redundant places. [2021-06-10 14:51:34,957 INFO L241 Difference]: Finished difference. Result has 253 places, 266 transitions, 7569 flow [2021-06-10 14:51:34,957 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=6668, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7569, PETRI_PLACES=253, PETRI_TRANSITIONS=266} [2021-06-10 14:51:34,958 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 209 predicate places. [2021-06-10 14:51:34,958 INFO L480 AbstractCegarLoop]: Abstraction has has 253 places, 266 transitions, 7569 flow [2021-06-10 14:51:34,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:34,958 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:34,958 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:34,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-10 14:51:34,958 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:34,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:34,958 INFO L82 PathProgramCache]: Analyzing trace with hash -375876375, now seen corresponding path program 36 times [2021-06-10 14:51:34,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:34,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779977177] [2021-06-10 14:51:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:34,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:34,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:34,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:34,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:34,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:34,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:34,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:34,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:34,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:51:34,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:51:35,013 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:35,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:35,030 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:35,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:35,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779977177] [2021-06-10 14:51:35,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:35,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:35,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672252999] [2021-06-10 14:51:35,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:35,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:35,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:35,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:35,046 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:35,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 266 transitions, 7569 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:35,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:35,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:35,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:35,579 INFO L129 PetriNetUnfolder]: 230/2821 cut-off events. [2021-06-10 14:51:35,579 INFO L130 PetriNetUnfolder]: For 67677/68463 co-relation queries the response was YES. [2021-06-10 14:51:35,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15771 conditions, 2821 events. 230/2821 cut-off events. For 67677/68463 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 39158 event pairs, 63 based on Foata normal form. 18/2736 useless extension candidates. Maximal degree in co-relation 15671. Up to 367 conditions per place. [2021-06-10 14:51:35,610 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 186 selfloop transitions, 113 changer transitions 6/325 dead transitions. [2021-06-10 14:51:35,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 325 transitions, 9926 flow [2021-06-10 14:51:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:35,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:35,611 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:35,611 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:35,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:35,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:35,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:35,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:35,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:35,612 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:35,612 INFO L185 Difference]: Start difference. First operand has 253 places, 266 transitions, 7569 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:35,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 325 transitions, 9926 flow [2021-06-10 14:51:35,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 325 transitions, 9756 flow, removed 35 selfloop flow, removed 3 redundant places. [2021-06-10 14:51:35,853 INFO L241 Difference]: Finished difference. Result has 261 places, 292 transitions, 8584 flow [2021-06-10 14:51:35,853 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=7433, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8584, PETRI_PLACES=261, PETRI_TRANSITIONS=292} [2021-06-10 14:51:35,853 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 217 predicate places. [2021-06-10 14:51:35,853 INFO L480 AbstractCegarLoop]: Abstraction has has 261 places, 292 transitions, 8584 flow [2021-06-10 14:51:35,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:35,853 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:35,853 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:35,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-10 14:51:35,854 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:35,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:35,854 INFO L82 PathProgramCache]: Analyzing trace with hash -966708999, now seen corresponding path program 37 times [2021-06-10 14:51:35,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:35,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951758472] [2021-06-10 14:51:35,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:35,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:35,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:35,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:35,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:35,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:35,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:35,873 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:35,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:35,890 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:35,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:35,904 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:35,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:35,922 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:35,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:35,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951758472] [2021-06-10 14:51:35,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:35,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:35,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728073650] [2021-06-10 14:51:35,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:35,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:35,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:35,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:35,940 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:35,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 292 transitions, 8584 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:35,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:35,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:35,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:36,463 INFO L129 PetriNetUnfolder]: 234/2881 cut-off events. [2021-06-10 14:51:36,464 INFO L130 PetriNetUnfolder]: For 70676/71408 co-relation queries the response was YES. [2021-06-10 14:51:36,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16291 conditions, 2881 events. 234/2881 cut-off events. For 70676/71408 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 40329 event pairs, 76 based on Foata normal form. 22/2799 useless extension candidates. Maximal degree in co-relation 16187. Up to 366 conditions per place. [2021-06-10 14:51:36,496 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 162 selfloop transitions, 147 changer transitions 0/329 dead transitions. [2021-06-10 14:51:36,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 329 transitions, 10288 flow [2021-06-10 14:51:36,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:36,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:36,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:36,497 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:36,497 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:36,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:36,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:36,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:36,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:36,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:36,499 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:36,499 INFO L185 Difference]: Start difference. First operand has 261 places, 292 transitions, 8584 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:36,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 329 transitions, 10288 flow [2021-06-10 14:51:36,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 329 transitions, 10067 flow, removed 59 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:36,786 INFO L241 Difference]: Finished difference. Result has 268 places, 307 transitions, 9331 flow [2021-06-10 14:51:36,787 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=8392, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9331, PETRI_PLACES=268, PETRI_TRANSITIONS=307} [2021-06-10 14:51:36,787 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 224 predicate places. [2021-06-10 14:51:36,787 INFO L480 AbstractCegarLoop]: Abstraction has has 268 places, 307 transitions, 9331 flow [2021-06-10 14:51:36,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:36,787 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:36,787 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:36,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-10 14:51:36,787 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:36,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:36,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1936470241, now seen corresponding path program 38 times [2021-06-10 14:51:36,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:36,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672626537] [2021-06-10 14:51:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:36,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:36,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:36,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:36,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:36,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:36,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:36,817 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:36,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:36,835 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:51:36,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:51:36,856 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:36,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:36,874 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:36,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:36,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672626537] [2021-06-10 14:51:36,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:36,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:36,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390667142] [2021-06-10 14:51:36,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:36,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:36,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:36,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:36,893 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:36,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 307 transitions, 9331 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:36,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:36,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:36,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:37,498 INFO L129 PetriNetUnfolder]: 232/2938 cut-off events. [2021-06-10 14:51:37,498 INFO L130 PetriNetUnfolder]: For 74836/75516 co-relation queries the response was YES. [2021-06-10 14:51:37,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16834 conditions, 2938 events. 232/2938 cut-off events. For 74836/75516 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 41352 event pairs, 79 based on Foata normal form. 24/2859 useless extension candidates. Maximal degree in co-relation 16727. Up to 362 conditions per place. [2021-06-10 14:51:37,528 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 134 selfloop transitions, 173 changer transitions 2/329 dead transitions. [2021-06-10 14:51:37,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 329 transitions, 10617 flow [2021-06-10 14:51:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:37,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:37,529 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:37,529 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:37,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:37,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:37,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:37,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:37,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:37,530 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:37,530 INFO L185 Difference]: Start difference. First operand has 268 places, 307 transitions, 9331 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:37,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 329 transitions, 10617 flow [2021-06-10 14:51:37,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 329 transitions, 10440 flow, removed 28 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:37,804 INFO L241 Difference]: Finished difference. Result has 278 places, 315 transitions, 9964 flow [2021-06-10 14:51:37,804 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=9160, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9964, PETRI_PLACES=278, PETRI_TRANSITIONS=315} [2021-06-10 14:51:37,804 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 234 predicate places. [2021-06-10 14:51:37,804 INFO L480 AbstractCegarLoop]: Abstraction has has 278 places, 315 transitions, 9964 flow [2021-06-10 14:51:37,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:37,805 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:37,805 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:37,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-10 14:51:37,805 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:37,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:37,805 INFO L82 PathProgramCache]: Analyzing trace with hash 2129961527, now seen corresponding path program 39 times [2021-06-10 14:51:37,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:37,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135944131] [2021-06-10 14:51:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:37,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:37,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:37,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:37,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:37,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:37,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:37,825 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:37,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:37,839 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:37,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:37,853 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:37,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:37,874 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:37,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:37,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135944131] [2021-06-10 14:51:37,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:37,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:37,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715514414] [2021-06-10 14:51:37,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:37,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:37,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:37,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:37,892 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:37,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 315 transitions, 9964 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:37,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:37,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:37,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:38,472 INFO L129 PetriNetUnfolder]: 231/2926 cut-off events. [2021-06-10 14:51:38,472 INFO L130 PetriNetUnfolder]: For 80966/81650 co-relation queries the response was YES. [2021-06-10 14:51:38,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17376 conditions, 2926 events. 231/2926 cut-off events. For 80966/81650 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 41184 event pairs, 79 based on Foata normal form. 30/2853 useless extension candidates. Maximal degree in co-relation 17264. Up to 356 conditions per place. [2021-06-10 14:51:38,507 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 138 selfloop transitions, 164 changer transitions 0/322 dead transitions. [2021-06-10 14:51:38,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 322 transitions, 10764 flow [2021-06-10 14:51:38,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:38,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:38,508 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:38,508 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:38,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:38,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:38,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:38,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:38,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:38,509 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:38,509 INFO L185 Difference]: Start difference. First operand has 278 places, 315 transitions, 9964 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:38,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 322 transitions, 10764 flow [2021-06-10 14:51:38,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 322 transitions, 10562 flow, removed 25 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:38,830 INFO L241 Difference]: Finished difference. Result has 281 places, 315 transitions, 10101 flow [2021-06-10 14:51:38,830 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=9770, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10101, PETRI_PLACES=281, PETRI_TRANSITIONS=315} [2021-06-10 14:51:38,830 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 237 predicate places. [2021-06-10 14:51:38,830 INFO L480 AbstractCegarLoop]: Abstraction has has 281 places, 315 transitions, 10101 flow [2021-06-10 14:51:38,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:38,830 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:38,830 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:38,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-10 14:51:38,831 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:38,831 INFO L82 PathProgramCache]: Analyzing trace with hash -466361501, now seen corresponding path program 40 times [2021-06-10 14:51:38,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:38,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692006551] [2021-06-10 14:51:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:38,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:38,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:38,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:38,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:38,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:38,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:38,851 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:38,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:38,862 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:38,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:38,875 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:38,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:38,894 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:38,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:38,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692006551] [2021-06-10 14:51:38,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:38,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:38,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3575492] [2021-06-10 14:51:38,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:38,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:38,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:38,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:38,912 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:38,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 315 transitions, 10101 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:38,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:38,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:38,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:39,480 INFO L129 PetriNetUnfolder]: 231/2940 cut-off events. [2021-06-10 14:51:39,481 INFO L130 PetriNetUnfolder]: For 79898/80581 co-relation queries the response was YES. [2021-06-10 14:51:39,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17506 conditions, 2940 events. 231/2940 cut-off events. For 79898/80581 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 41354 event pairs, 73 based on Foata normal form. 30/2865 useless extension candidates. Maximal degree in co-relation 17395. Up to 356 conditions per place. [2021-06-10 14:51:39,512 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 139 selfloop transitions, 163 changer transitions 0/322 dead transitions. [2021-06-10 14:51:39,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 322 transitions, 10901 flow [2021-06-10 14:51:39,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:39,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:39,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:39,513 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:39,513 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:39,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:39,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:39,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:39,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:39,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:39,514 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:39,514 INFO L185 Difference]: Start difference. First operand has 281 places, 315 transitions, 10101 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:39,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 322 transitions, 10901 flow [2021-06-10 14:51:39,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 322 transitions, 10597 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:39,821 INFO L241 Difference]: Finished difference. Result has 286 places, 316 transitions, 10212 flow [2021-06-10 14:51:39,822 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=9797, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10212, PETRI_PLACES=286, PETRI_TRANSITIONS=316} [2021-06-10 14:51:39,822 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 242 predicate places. [2021-06-10 14:51:39,822 INFO L480 AbstractCegarLoop]: Abstraction has has 286 places, 316 transitions, 10212 flow [2021-06-10 14:51:39,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:39,822 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:39,822 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:39,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-10 14:51:39,822 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:39,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:39,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2147169711, now seen corresponding path program 41 times [2021-06-10 14:51:39,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:39,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533202927] [2021-06-10 14:51:39,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:39,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:39,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:39,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:39,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:39,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:39,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:39,842 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:39,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:39,852 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:39,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:39,866 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:39,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:39,883 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:39,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:39,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533202927] [2021-06-10 14:51:39,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:39,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:39,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284004217] [2021-06-10 14:51:39,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:39,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:39,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:39,901 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:39,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 316 transitions, 10212 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:39,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:39,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:39,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:40,478 INFO L129 PetriNetUnfolder]: 231/2939 cut-off events. [2021-06-10 14:51:40,478 INFO L130 PetriNetUnfolder]: For 83442/84121 co-relation queries the response was YES. [2021-06-10 14:51:40,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17777 conditions, 2939 events. 231/2939 cut-off events. For 83442/84121 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 41355 event pairs, 73 based on Foata normal form. 28/2862 useless extension candidates. Maximal degree in co-relation 17664. Up to 356 conditions per place. [2021-06-10 14:51:40,514 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 140 selfloop transitions, 162 changer transitions 0/322 dead transitions. [2021-06-10 14:51:40,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 322 transitions, 10976 flow [2021-06-10 14:51:40,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:40,515 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:40,515 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:40,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:40,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:40,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:40,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:40,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:40,516 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:40,516 INFO L185 Difference]: Start difference. First operand has 286 places, 316 transitions, 10212 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:40,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 322 transitions, 10976 flow [2021-06-10 14:51:40,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 322 transitions, 10702 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-06-10 14:51:40,878 INFO L241 Difference]: Finished difference. Result has 291 places, 316 transitions, 10265 flow [2021-06-10 14:51:40,878 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=9938, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10265, PETRI_PLACES=291, PETRI_TRANSITIONS=316} [2021-06-10 14:51:40,878 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 247 predicate places. [2021-06-10 14:51:40,878 INFO L480 AbstractCegarLoop]: Abstraction has has 291 places, 316 transitions, 10265 flow [2021-06-10 14:51:40,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:40,878 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:40,879 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:40,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-10 14:51:40,879 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:40,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:40,879 INFO L82 PathProgramCache]: Analyzing trace with hash 94294469, now seen corresponding path program 42 times [2021-06-10 14:51:40,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:40,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815204337] [2021-06-10 14:51:40,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:40,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:40,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:40,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:40,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:40,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:40,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:40,902 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:51:40,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:51:40,912 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:40,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:40,925 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:40,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:40,942 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:40,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:40,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815204337] [2021-06-10 14:51:40,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:40,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:40,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072694373] [2021-06-10 14:51:40,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:40,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:40,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:40,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:40,961 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:40,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 316 transitions, 10265 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:40,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:40,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:40,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:41,541 INFO L129 PetriNetUnfolder]: 231/2938 cut-off events. [2021-06-10 14:51:41,541 INFO L130 PetriNetUnfolder]: For 85202/85881 co-relation queries the response was YES. [2021-06-10 14:51:41,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18005 conditions, 2938 events. 231/2938 cut-off events. For 85202/85881 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 41365 event pairs, 73 based on Foata normal form. 28/2861 useless extension candidates. Maximal degree in co-relation 17891. Up to 356 conditions per place. [2021-06-10 14:51:41,577 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 142 selfloop transitions, 152 changer transitions 8/322 dead transitions. [2021-06-10 14:51:41,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 322 transitions, 11037 flow [2021-06-10 14:51:41,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:41,578 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:41,578 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:41,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:41,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:41,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:41,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:41,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:41,579 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:41,579 INFO L185 Difference]: Start difference. First operand has 291 places, 316 transitions, 10265 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:41,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 322 transitions, 11037 flow [2021-06-10 14:51:41,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 322 transitions, 10737 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:41,939 INFO L241 Difference]: Finished difference. Result has 295 places, 308 transitions, 9908 flow [2021-06-10 14:51:41,939 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=9965, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9908, PETRI_PLACES=295, PETRI_TRANSITIONS=308} [2021-06-10 14:51:41,939 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 251 predicate places. [2021-06-10 14:51:41,939 INFO L480 AbstractCegarLoop]: Abstraction has has 295 places, 308 transitions, 9908 flow [2021-06-10 14:51:41,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:41,939 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:41,939 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:41,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-10 14:51:41,939 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:41,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1288358829, now seen corresponding path program 43 times [2021-06-10 14:51:41,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:41,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832548340] [2021-06-10 14:51:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:41,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:41,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:41,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:41,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:41,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:41,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:41,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:41,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:41,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:51:41,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:51:41,996 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:41,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:42,014 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:42,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:42,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832548340] [2021-06-10 14:51:42,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:42,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:42,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323569982] [2021-06-10 14:51:42,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:42,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:42,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:42,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:42,032 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:42,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 308 transitions, 9908 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:42,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:42,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:42,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:42,598 INFO L129 PetriNetUnfolder]: 231/2906 cut-off events. [2021-06-10 14:51:42,598 INFO L130 PetriNetUnfolder]: For 87056/87739 co-relation queries the response was YES. [2021-06-10 14:51:42,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17993 conditions, 2906 events. 231/2906 cut-off events. For 87056/87739 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 40809 event pairs, 73 based on Foata normal form. 24/2829 useless extension candidates. Maximal degree in co-relation 17878. Up to 357 conditions per place. [2021-06-10 14:51:42,633 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 168 selfloop transitions, 149 changer transitions 2/339 dead transitions. [2021-06-10 14:51:42,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 339 transitions, 11606 flow [2021-06-10 14:51:42,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:42,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:42,636 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:42,636 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:42,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:42,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:42,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:42,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:42,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:42,637 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:42,637 INFO L185 Difference]: Start difference. First operand has 295 places, 308 transitions, 9908 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:42,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 339 transitions, 11606 flow [2021-06-10 14:51:42,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 339 transitions, 11212 flow, removed 36 selfloop flow, removed 10 redundant places. [2021-06-10 14:51:42,976 INFO L241 Difference]: Finished difference. Result has 291 places, 316 transitions, 10298 flow [2021-06-10 14:51:42,976 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=9592, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10298, PETRI_PLACES=291, PETRI_TRANSITIONS=316} [2021-06-10 14:51:42,976 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 247 predicate places. [2021-06-10 14:51:42,976 INFO L480 AbstractCegarLoop]: Abstraction has has 291 places, 316 transitions, 10298 flow [2021-06-10 14:51:42,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:42,976 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:42,976 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:42,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-10 14:51:42,977 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:42,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:42,977 INFO L82 PathProgramCache]: Analyzing trace with hash 183303743, now seen corresponding path program 44 times [2021-06-10 14:51:42,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:42,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363382073] [2021-06-10 14:51:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:42,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:42,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:42,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:42,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:42,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:42,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:42,995 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:42,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:43,011 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:51:43,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:51:43,030 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:43,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:43,046 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:43,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:43,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363382073] [2021-06-10 14:51:43,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:43,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:43,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395427384] [2021-06-10 14:51:43,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:43,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:43,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:43,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:43,062 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:43,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 316 transitions, 10298 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:43,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:43,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:43,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:43,660 INFO L129 PetriNetUnfolder]: 230/2894 cut-off events. [2021-06-10 14:51:43,660 INFO L130 PetriNetUnfolder]: For 78151/78922 co-relation queries the response was YES. [2021-06-10 14:51:43,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17094 conditions, 2894 events. 230/2894 cut-off events. For 78151/78922 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 40661 event pairs, 73 based on Foata normal form. 27/2820 useless extension candidates. Maximal degree in co-relation 16980. Up to 362 conditions per place. [2021-06-10 14:51:43,696 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 127 selfloop transitions, 179 changer transitions 2/328 dead transitions. [2021-06-10 14:51:43,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 328 transitions, 11272 flow [2021-06-10 14:51:43,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:43,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:43,697 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:43,697 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:43,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:43,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:43,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:43,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:43,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:43,698 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:43,698 INFO L185 Difference]: Start difference. First operand has 291 places, 316 transitions, 10298 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:43,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 328 transitions, 11272 flow [2021-06-10 14:51:44,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 328 transitions, 11067 flow, removed 27 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:44,054 INFO L241 Difference]: Finished difference. Result has 297 places, 319 transitions, 10663 flow [2021-06-10 14:51:44,055 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=10103, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10663, PETRI_PLACES=297, PETRI_TRANSITIONS=319} [2021-06-10 14:51:44,055 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 253 predicate places. [2021-06-10 14:51:44,055 INFO L480 AbstractCegarLoop]: Abstraction has has 297 places, 319 transitions, 10663 flow [2021-06-10 14:51:44,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:44,055 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:44,055 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:44,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-10 14:51:44,055 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:44,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:44,055 INFO L82 PathProgramCache]: Analyzing trace with hash -512011391, now seen corresponding path program 45 times [2021-06-10 14:51:44,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:44,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047996120] [2021-06-10 14:51:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:44,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:44,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:44,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:44,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:44,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:44,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:44,073 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:44,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:44,091 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:44,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:44,106 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:44,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:44,128 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:44,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:44,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047996120] [2021-06-10 14:51:44,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:44,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:44,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96607887] [2021-06-10 14:51:44,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:44,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:44,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:44,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:44,146 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:44,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 319 transitions, 10663 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:44,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:44,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:44,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:44,716 INFO L129 PetriNetUnfolder]: 229/2867 cut-off events. [2021-06-10 14:51:44,716 INFO L130 PetriNetUnfolder]: For 80420/81200 co-relation queries the response was YES. [2021-06-10 14:51:44,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17282 conditions, 2867 events. 229/2867 cut-off events. For 80420/81200 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 40168 event pairs, 79 based on Foata normal form. 27/2795 useless extension candidates. Maximal degree in co-relation 17166. Up to 362 conditions per place. [2021-06-10 14:51:44,752 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 131 selfloop transitions, 173 changer transitions 0/324 dead transitions. [2021-06-10 14:51:44,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 324 transitions, 11385 flow [2021-06-10 14:51:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:44,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:44,753 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:44,753 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:44,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:44,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:44,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:44,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:44,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:44,754 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:44,754 INFO L185 Difference]: Start difference. First operand has 297 places, 319 transitions, 10663 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:44,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 324 transitions, 11385 flow [2021-06-10 14:51:45,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 324 transitions, 11079 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-06-10 14:51:45,138 INFO L241 Difference]: Finished difference. Result has 299 places, 319 transitions, 10716 flow [2021-06-10 14:51:45,139 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=10367, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10716, PETRI_PLACES=299, PETRI_TRANSITIONS=319} [2021-06-10 14:51:45,139 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 255 predicate places. [2021-06-10 14:51:45,139 INFO L480 AbstractCegarLoop]: Abstraction has has 299 places, 319 transitions, 10716 flow [2021-06-10 14:51:45,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:45,139 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:45,139 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:45,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-10 14:51:45,139 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:45,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:45,139 INFO L82 PathProgramCache]: Analyzing trace with hash 866408683, now seen corresponding path program 46 times [2021-06-10 14:51:45,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:45,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128787327] [2021-06-10 14:51:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:45,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:45,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:45,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:45,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:45,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:45,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:45,159 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:45,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:45,175 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:51:45,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:51:45,189 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:45,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:45,206 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:45,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:45,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128787327] [2021-06-10 14:51:45,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:45,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:45,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122885277] [2021-06-10 14:51:45,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:45,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:45,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:45,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:45,226 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:45,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 319 transitions, 10716 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:45,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:45,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:45,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:45,858 INFO L129 PetriNetUnfolder]: 229/2881 cut-off events. [2021-06-10 14:51:45,858 INFO L130 PetriNetUnfolder]: For 78798/79578 co-relation queries the response was YES. [2021-06-10 14:51:45,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17288 conditions, 2881 events. 229/2881 cut-off events. For 78798/79578 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 40373 event pairs, 73 based on Foata normal form. 27/2807 useless extension candidates. Maximal degree in co-relation 17173. Up to 362 conditions per place. [2021-06-10 14:51:45,900 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 129 selfloop transitions, 172 changer transitions 3/324 dead transitions. [2021-06-10 14:51:45,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 324 transitions, 11436 flow [2021-06-10 14:51:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:45,901 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:45,901 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:45,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:45,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:45,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:45,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:45,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:45,902 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:45,902 INFO L185 Difference]: Start difference. First operand has 299 places, 319 transitions, 10716 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:45,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 324 transitions, 11436 flow [2021-06-10 14:51:46,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 324 transitions, 11082 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:46,268 INFO L241 Difference]: Finished difference. Result has 303 places, 316 transitions, 10582 flow [2021-06-10 14:51:46,268 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=10362, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10582, PETRI_PLACES=303, PETRI_TRANSITIONS=316} [2021-06-10 14:51:46,268 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 259 predicate places. [2021-06-10 14:51:46,268 INFO L480 AbstractCegarLoop]: Abstraction has has 303 places, 316 transitions, 10582 flow [2021-06-10 14:51:46,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:46,268 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:46,268 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:46,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-10 14:51:46,269 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:46,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:46,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1743520007, now seen corresponding path program 47 times [2021-06-10 14:51:46,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:46,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848364142] [2021-06-10 14:51:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:46,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:46,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:46,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:46,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:46,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:46,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:46,292 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:46,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:46,308 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:51:46,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:51:46,327 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:46,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:46,345 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:46,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:46,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848364142] [2021-06-10 14:51:46,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:46,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:46,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444102773] [2021-06-10 14:51:46,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:46,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:46,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:46,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:46,364 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:46,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 316 transitions, 10582 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:46,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:46,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:46,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:46,928 INFO L129 PetriNetUnfolder]: 229/2870 cut-off events. [2021-06-10 14:51:46,928 INFO L130 PetriNetUnfolder]: For 79359/80135 co-relation queries the response was YES. [2021-06-10 14:51:46,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17443 conditions, 2870 events. 229/2870 cut-off events. For 79359/80135 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 40167 event pairs, 73 based on Foata normal form. 25/2795 useless extension candidates. Maximal degree in co-relation 17328. Up to 362 conditions per place. [2021-06-10 14:51:46,964 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 126 selfloop transitions, 175 changer transitions 2/323 dead transitions. [2021-06-10 14:51:46,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 323 transitions, 11385 flow [2021-06-10 14:51:46,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:46,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:46,965 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:46,965 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:46,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:46,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:46,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:46,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:46,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:46,966 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:46,966 INFO L185 Difference]: Start difference. First operand has 303 places, 316 transitions, 10582 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:46,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 323 transitions, 11385 flow [2021-06-10 14:51:47,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 323 transitions, 11021 flow, removed 16 selfloop flow, removed 6 redundant places. [2021-06-10 14:51:47,332 INFO L241 Difference]: Finished difference. Result has 304 places, 316 transitions, 10608 flow [2021-06-10 14:51:47,332 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=10236, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10608, PETRI_PLACES=304, PETRI_TRANSITIONS=316} [2021-06-10 14:51:47,332 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 260 predicate places. [2021-06-10 14:51:47,333 INFO L480 AbstractCegarLoop]: Abstraction has has 304 places, 316 transitions, 10608 flow [2021-06-10 14:51:47,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:47,333 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:47,333 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:47,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-10 14:51:47,333 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:47,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:47,333 INFO L82 PathProgramCache]: Analyzing trace with hash -498283151, now seen corresponding path program 48 times [2021-06-10 14:51:47,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:47,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266173937] [2021-06-10 14:51:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:47,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:47,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:47,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:47,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:47,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:47,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:47,358 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:47,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:47,382 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:51:47,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:51:47,403 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:47,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:47,419 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:47,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:47,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266173937] [2021-06-10 14:51:47,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:47,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:47,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124531260] [2021-06-10 14:51:47,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:47,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:47,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:47,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:47,437 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:47,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 316 transitions, 10608 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:47,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:47,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:47,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:48,027 INFO L129 PetriNetUnfolder]: 228/2858 cut-off events. [2021-06-10 14:51:48,027 INFO L130 PetriNetUnfolder]: For 77178/77954 co-relation queries the response was YES. [2021-06-10 14:51:48,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17195 conditions, 2858 events. 228/2858 cut-off events. For 77178/77954 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 39960 event pairs, 73 based on Foata normal form. 25/2783 useless extension candidates. Maximal degree in co-relation 17080. Up to 362 conditions per place. [2021-06-10 14:51:48,059 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 133 selfloop transitions, 169 changer transitions 2/324 dead transitions. [2021-06-10 14:51:48,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 324 transitions, 11445 flow [2021-06-10 14:51:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:48,060 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:48,060 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:48,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:48,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:48,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:48,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:48,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:48,061 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:48,061 INFO L185 Difference]: Start difference. First operand has 304 places, 316 transitions, 10608 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:48,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 324 transitions, 11445 flow [2021-06-10 14:51:48,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 324 transitions, 11086 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-06-10 14:51:48,405 INFO L241 Difference]: Finished difference. Result has 306 places, 317 transitions, 10653 flow [2021-06-10 14:51:48,406 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=10257, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10653, PETRI_PLACES=306, PETRI_TRANSITIONS=317} [2021-06-10 14:51:48,406 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 262 predicate places. [2021-06-10 14:51:48,406 INFO L480 AbstractCegarLoop]: Abstraction has has 306 places, 317 transitions, 10653 flow [2021-06-10 14:51:48,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:48,406 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:48,406 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:48,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-10 14:51:48,406 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:48,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:48,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1164360373, now seen corresponding path program 49 times [2021-06-10 14:51:48,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:48,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914139261] [2021-06-10 14:51:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:48,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:48,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:48,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:48,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:48,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:48,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:48,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:48,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:48,461 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:48,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:48,480 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:48,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:48,498 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:48,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:48,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914139261] [2021-06-10 14:51:48,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:48,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:48,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655198211] [2021-06-10 14:51:48,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:48,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:48,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:48,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:48,516 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:48,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 317 transitions, 10653 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:48,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:48,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:48,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:49,152 INFO L129 PetriNetUnfolder]: 226/3128 cut-off events. [2021-06-10 14:51:49,152 INFO L130 PetriNetUnfolder]: For 83214/83994 co-relation queries the response was YES. [2021-06-10 14:51:49,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18487 conditions, 3128 events. 226/3128 cut-off events. For 83214/83994 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 44766 event pairs, 57 based on Foata normal form. 18/3036 useless extension candidates. Maximal degree in co-relation 18371. Up to 380 conditions per place. [2021-06-10 14:51:49,191 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 222 selfloop transitions, 134 changer transitions 0/376 dead transitions. [2021-06-10 14:51:49,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 376 transitions, 13383 flow [2021-06-10 14:51:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:49,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:49,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:49,192 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:49,192 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:49,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:49,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:49,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:49,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:49,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:49,193 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:49,193 INFO L185 Difference]: Start difference. First operand has 306 places, 317 transitions, 10653 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:49,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 376 transitions, 13383 flow [2021-06-10 14:51:49,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 376 transitions, 12983 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-06-10 14:51:49,619 INFO L241 Difference]: Finished difference. Result has 312 places, 343 transitions, 11696 flow [2021-06-10 14:51:49,619 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=10319, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11696, PETRI_PLACES=312, PETRI_TRANSITIONS=343} [2021-06-10 14:51:49,619 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 268 predicate places. [2021-06-10 14:51:49,619 INFO L480 AbstractCegarLoop]: Abstraction has has 312 places, 343 transitions, 11696 flow [2021-06-10 14:51:49,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:49,619 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:49,619 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:49,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-10 14:51:49,620 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:49,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:49,620 INFO L82 PathProgramCache]: Analyzing trace with hash -111318419, now seen corresponding path program 50 times [2021-06-10 14:51:49,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:49,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473932383] [2021-06-10 14:51:49,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:49,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:49,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:49,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:49,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:49,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:49,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:49,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:49,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:49,647 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:49,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:49,660 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:49,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:49,679 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:49,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:49,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473932383] [2021-06-10 14:51:49,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:49,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:49,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240819591] [2021-06-10 14:51:49,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:49,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:49,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:49,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:49,699 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:49,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 343 transitions, 11696 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:49,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:49,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:49,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:50,372 INFO L129 PetriNetUnfolder]: 224/3185 cut-off events. [2021-06-10 14:51:50,373 INFO L130 PetriNetUnfolder]: For 88705/89500 co-relation queries the response was YES. [2021-06-10 14:51:50,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18925 conditions, 3185 events. 224/3185 cut-off events. For 88705/89500 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 45834 event pairs, 73 based on Foata normal form. 27/3104 useless extension candidates. Maximal degree in co-relation 18805. Up to 390 conditions per place. [2021-06-10 14:51:50,406 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 186 selfloop transitions, 163 changer transitions 2/371 dead transitions. [2021-06-10 14:51:50,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 371 transitions, 13379 flow [2021-06-10 14:51:50,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:50,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:50,407 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:50,407 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:50,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:50,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:50,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:50,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:50,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:50,408 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:50,408 INFO L185 Difference]: Start difference. First operand has 312 places, 343 transitions, 11696 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:50,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 371 transitions, 13379 flow [2021-06-10 14:51:50,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 371 transitions, 13242 flow, removed 19 selfloop flow, removed 2 redundant places. [2021-06-10 14:51:50,824 INFO L241 Difference]: Finished difference. Result has 321 places, 349 transitions, 12188 flow [2021-06-10 14:51:50,824 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=11567, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12188, PETRI_PLACES=321, PETRI_TRANSITIONS=349} [2021-06-10 14:51:50,824 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 277 predicate places. [2021-06-10 14:51:50,824 INFO L480 AbstractCegarLoop]: Abstraction has has 321 places, 349 transitions, 12188 flow [2021-06-10 14:51:50,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:50,825 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:50,825 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:50,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-10 14:51:50,825 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:50,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:50,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1382928451, now seen corresponding path program 51 times [2021-06-10 14:51:50,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:50,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074391349] [2021-06-10 14:51:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:50,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:50,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:50,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:50,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:50,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:50,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:50,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:50,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:50,856 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:50,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:50,868 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:50,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:50,884 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:50,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:50,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074391349] [2021-06-10 14:51:50,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:50,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:50,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966239557] [2021-06-10 14:51:50,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:50,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:50,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:50,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:50,901 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:50,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 349 transitions, 12188 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:50,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:50,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:50,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:51,580 INFO L129 PetriNetUnfolder]: 223/3173 cut-off events. [2021-06-10 14:51:51,580 INFO L130 PetriNetUnfolder]: For 93092/93881 co-relation queries the response was YES. [2021-06-10 14:51:51,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19380 conditions, 3173 events. 223/3173 cut-off events. For 93092/93881 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 45603 event pairs, 73 based on Foata normal form. 27/3092 useless extension candidates. Maximal degree in co-relation 19256. Up to 402 conditions per place. [2021-06-10 14:51:51,622 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 186 selfloop transitions, 168 changer transitions 2/376 dead transitions. [2021-06-10 14:51:51,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 376 transitions, 13839 flow [2021-06-10 14:51:51,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:51,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:51,623 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:51,623 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:51,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:51,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:51,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:51,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:51,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:51,624 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:51,624 INFO L185 Difference]: Start difference. First operand has 321 places, 349 transitions, 12188 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:51,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 376 transitions, 13839 flow [2021-06-10 14:51:52,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 376 transitions, 13648 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:52,111 INFO L241 Difference]: Finished difference. Result has 328 places, 357 transitions, 12852 flow [2021-06-10 14:51:52,111 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12007, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12852, PETRI_PLACES=328, PETRI_TRANSITIONS=357} [2021-06-10 14:51:52,112 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 284 predicate places. [2021-06-10 14:51:52,112 INFO L480 AbstractCegarLoop]: Abstraction has has 328 places, 357 transitions, 12852 flow [2021-06-10 14:51:52,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:52,112 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:52,112 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:52,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-10 14:51:52,112 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:52,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:52,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1255351507, now seen corresponding path program 52 times [2021-06-10 14:51:52,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:52,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780888470] [2021-06-10 14:51:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:52,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:52,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:52,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:52,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:52,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:52,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:52,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:52,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:52,146 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:52,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:52,160 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:52,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:52,179 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:52,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:52,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780888470] [2021-06-10 14:51:52,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:52,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:52,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991445866] [2021-06-10 14:51:52,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:52,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:52,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:52,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:52,197 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:52,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 357 transitions, 12852 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:52,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:52,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:52,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:52,899 INFO L129 PetriNetUnfolder]: 222/3161 cut-off events. [2021-06-10 14:51:52,900 INFO L130 PetriNetUnfolder]: For 97922/98766 co-relation queries the response was YES. [2021-06-10 14:51:52,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19680 conditions, 3161 events. 222/3161 cut-off events. For 97922/98766 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 45384 event pairs, 73 based on Foata normal form. 30/3083 useless extension candidates. Maximal degree in co-relation 19553. Up to 402 conditions per place. [2021-06-10 14:51:52,937 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 177 selfloop transitions, 175 changer transitions 0/372 dead transitions. [2021-06-10 14:51:52,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 372 transitions, 14034 flow [2021-06-10 14:51:52,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:52,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:52,938 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:52,938 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:52,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:52,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:52,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:52,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:52,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:52,939 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:52,939 INFO L185 Difference]: Start difference. First operand has 328 places, 357 transitions, 12852 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:52,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 372 transitions, 14034 flow [2021-06-10 14:51:53,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 372 transitions, 13822 flow, removed 24 selfloop flow, removed 4 redundant places. [2021-06-10 14:51:53,423 INFO L241 Difference]: Finished difference. Result has 332 places, 360 transitions, 13153 flow [2021-06-10 14:51:53,424 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12648, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13153, PETRI_PLACES=332, PETRI_TRANSITIONS=360} [2021-06-10 14:51:53,424 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 288 predicate places. [2021-06-10 14:51:53,424 INFO L480 AbstractCegarLoop]: Abstraction has has 332 places, 360 transitions, 13153 flow [2021-06-10 14:51:53,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:53,424 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:53,424 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:53,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-10 14:51:53,424 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:53,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:53,425 INFO L82 PathProgramCache]: Analyzing trace with hash 2073321799, now seen corresponding path program 53 times [2021-06-10 14:51:53,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:53,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319097799] [2021-06-10 14:51:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:53,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:53,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:53,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:53,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:53,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:53,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:53,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:53,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:53,452 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:51:53,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:51:53,465 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:53,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:53,489 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:53,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:53,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319097799] [2021-06-10 14:51:53,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:53,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:53,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843364049] [2021-06-10 14:51:53,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:53,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:53,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:53,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:53,508 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:53,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 360 transitions, 13153 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:53,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:53,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:53,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:54,233 INFO L129 PetriNetUnfolder]: 222/3160 cut-off events. [2021-06-10 14:51:54,233 INFO L130 PetriNetUnfolder]: For 97678/98519 co-relation queries the response was YES. [2021-06-10 14:51:54,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19837 conditions, 3160 events. 222/3160 cut-off events. For 97678/98519 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 45438 event pairs, 73 based on Foata normal form. 30/3082 useless extension candidates. Maximal degree in co-relation 19710. Up to 402 conditions per place. [2021-06-10 14:51:54,283 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 177 selfloop transitions, 172 changer transitions 3/372 dead transitions. [2021-06-10 14:51:54,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 372 transitions, 14209 flow [2021-06-10 14:51:54,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:54,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:54,285 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:54,285 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:54,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:54,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:54,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:54,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:54,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:54,286 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:54,286 INFO L185 Difference]: Start difference. First operand has 332 places, 360 transitions, 13153 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:54,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 372 transitions, 14209 flow [2021-06-10 14:51:54,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 372 transitions, 13826 flow, removed 15 selfloop flow, removed 5 redundant places. [2021-06-10 14:51:54,824 INFO L241 Difference]: Finished difference. Result has 335 places, 357 transitions, 12974 flow [2021-06-10 14:51:54,825 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12770, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12974, PETRI_PLACES=335, PETRI_TRANSITIONS=357} [2021-06-10 14:51:54,825 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 291 predicate places. [2021-06-10 14:51:54,825 INFO L480 AbstractCegarLoop]: Abstraction has has 335 places, 357 transitions, 12974 flow [2021-06-10 14:51:54,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:54,825 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:54,825 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:54,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-10 14:51:54,825 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:54,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:54,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2061673747, now seen corresponding path program 54 times [2021-06-10 14:51:54,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:54,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238148673] [2021-06-10 14:51:54,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:54,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:54,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:54,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:54,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:54,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:54,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:54,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:54,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:54,854 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:51:54,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:51:54,879 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:51:54,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:51:54,898 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:54,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:54,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238148673] [2021-06-10 14:51:54,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:54,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:54,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674662268] [2021-06-10 14:51:54,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:54,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:54,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:54,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:54,916 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:54,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 357 transitions, 12974 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:54,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:54,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:54,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:55,617 INFO L129 PetriNetUnfolder]: 222/3147 cut-off events. [2021-06-10 14:51:55,617 INFO L130 PetriNetUnfolder]: For 98334/99157 co-relation queries the response was YES. [2021-06-10 14:51:55,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20018 conditions, 3147 events. 222/3147 cut-off events. For 98334/99157 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 45255 event pairs, 73 based on Foata normal form. 30/3070 useless extension candidates. Maximal degree in co-relation 19892. Up to 402 conditions per place. [2021-06-10 14:51:55,656 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 174 selfloop transitions, 174 changer transitions 1/369 dead transitions. [2021-06-10 14:51:55,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 369 transitions, 14032 flow [2021-06-10 14:51:55,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:55,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:55,657 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:55,657 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:55,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:55,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:55,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:55,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:55,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:55,658 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:55,658 INFO L185 Difference]: Start difference. First operand has 335 places, 357 transitions, 12974 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:55,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 369 transitions, 14032 flow [2021-06-10 14:51:56,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 369 transitions, 13684 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-06-10 14:51:56,121 INFO L241 Difference]: Finished difference. Result has 336 places, 364 transitions, 13267 flow [2021-06-10 14:51:56,121 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12642, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13267, PETRI_PLACES=336, PETRI_TRANSITIONS=364} [2021-06-10 14:51:56,121 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 292 predicate places. [2021-06-10 14:51:56,122 INFO L480 AbstractCegarLoop]: Abstraction has has 336 places, 364 transitions, 13267 flow [2021-06-10 14:51:56,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:56,122 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:56,122 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:56,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-10 14:51:56,122 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:56,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:56,122 INFO L82 PathProgramCache]: Analyzing trace with hash -485545299, now seen corresponding path program 55 times [2021-06-10 14:51:56,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:56,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183775945] [2021-06-10 14:51:56,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:56,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:56,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:56,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:56,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:56,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:56,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:56,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:56,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:56,149 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:51:56,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:51:56,170 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:56,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:56,193 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:56,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:56,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183775945] [2021-06-10 14:51:56,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:56,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:56,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832499895] [2021-06-10 14:51:56,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:56,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:56,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:56,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:56,213 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:56,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 364 transitions, 13267 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:56,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:56,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:56,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:56,910 INFO L129 PetriNetUnfolder]: 222/3143 cut-off events. [2021-06-10 14:51:56,911 INFO L130 PetriNetUnfolder]: For 96731/97550 co-relation queries the response was YES. [2021-06-10 14:51:56,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19794 conditions, 3143 events. 222/3143 cut-off events. For 96731/97550 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 45089 event pairs, 73 based on Foata normal form. 28/3064 useless extension candidates. Maximal degree in co-relation 19668. Up to 402 conditions per place. [2021-06-10 14:51:56,952 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 177 selfloop transitions, 169 changer transitions 2/368 dead transitions. [2021-06-10 14:51:56,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 368 transitions, 14051 flow [2021-06-10 14:51:56,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:56,954 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:56,954 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:56,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:56,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:56,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:56,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:56,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:56,955 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:56,955 INFO L185 Difference]: Start difference. First operand has 336 places, 364 transitions, 13267 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:56,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 368 transitions, 14051 flow [2021-06-10 14:51:57,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 368 transitions, 13726 flow, removed 15 selfloop flow, removed 5 redundant places. [2021-06-10 14:51:57,464 INFO L241 Difference]: Finished difference. Result has 338 places, 362 transitions, 13203 flow [2021-06-10 14:51:57,464 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12950, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13203, PETRI_PLACES=338, PETRI_TRANSITIONS=362} [2021-06-10 14:51:57,464 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 294 predicate places. [2021-06-10 14:51:57,464 INFO L480 AbstractCegarLoop]: Abstraction has has 338 places, 362 transitions, 13203 flow [2021-06-10 14:51:57,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:57,465 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:57,465 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:57,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-10 14:51:57,465 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:57,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:57,465 INFO L82 PathProgramCache]: Analyzing trace with hash 339505465, now seen corresponding path program 56 times [2021-06-10 14:51:57,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:57,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426692061] [2021-06-10 14:51:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:57,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:57,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:57,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:57,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:57,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:57,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:57,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:57,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:57,492 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:51:57,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:51:57,504 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:57,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:57,522 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:57,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:57,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426692061] [2021-06-10 14:51:57,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:57,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:57,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407519715] [2021-06-10 14:51:57,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:57,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:57,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:57,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:57,540 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:57,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 362 transitions, 13203 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:57,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:57,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:57,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:58,285 INFO L129 PetriNetUnfolder]: 220/3121 cut-off events. [2021-06-10 14:51:58,285 INFO L130 PetriNetUnfolder]: For 95820/96639 co-relation queries the response was YES. [2021-06-10 14:51:58,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19747 conditions, 3121 events. 220/3121 cut-off events. For 95820/96639 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 44733 event pairs, 73 based on Foata normal form. 28/3042 useless extension candidates. Maximal degree in co-relation 19622. Up to 402 conditions per place. [2021-06-10 14:51:58,331 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 183 selfloop transitions, 163 changer transitions 2/368 dead transitions. [2021-06-10 14:51:58,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 368 transitions, 14059 flow [2021-06-10 14:51:58,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:58,332 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:58,332 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:58,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:58,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:58,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:58,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:58,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:58,333 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:58,333 INFO L185 Difference]: Start difference. First operand has 338 places, 362 transitions, 13203 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:58,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 368 transitions, 14059 flow [2021-06-10 14:51:58,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 368 transitions, 13708 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-10 14:51:58,861 INFO L241 Difference]: Finished difference. Result has 340 places, 362 transitions, 13188 flow [2021-06-10 14:51:58,861 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12862, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13188, PETRI_PLACES=340, PETRI_TRANSITIONS=362} [2021-06-10 14:51:58,861 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 296 predicate places. [2021-06-10 14:51:58,861 INFO L480 AbstractCegarLoop]: Abstraction has has 340 places, 362 transitions, 13188 flow [2021-06-10 14:51:58,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:58,862 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:51:58,862 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:51:58,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-10 14:51:58,862 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:51:58,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:51:58,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1860854461, now seen corresponding path program 57 times [2021-06-10 14:51:58,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:51:58,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318548759] [2021-06-10 14:51:58,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:51:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:51:58,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:58,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:51:58,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:58,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:51:58,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:58,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:51:58,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:51:58,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:51:58,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:51:58,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:51:58,910 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:51:58,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:51:58,927 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:51:58,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:51:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:51:58,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318548759] [2021-06-10 14:51:58,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:51:58,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:51:58,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424767117] [2021-06-10 14:51:58,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:51:58,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:51:58,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:51:58,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:51:58,944 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:51:58,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 362 transitions, 13188 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:58,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:51:58,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:51:58,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:51:59,612 INFO L129 PetriNetUnfolder]: 219/3109 cut-off events. [2021-06-10 14:51:59,612 INFO L130 PetriNetUnfolder]: For 95557/96380 co-relation queries the response was YES. [2021-06-10 14:51:59,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19696 conditions, 3109 events. 219/3109 cut-off events. For 95557/96380 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 44534 event pairs, 73 based on Foata normal form. 30/3032 useless extension candidates. Maximal degree in co-relation 19571. Up to 387 conditions per place. [2021-06-10 14:51:59,652 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 185 selfloop transitions, 169 changer transitions 2/376 dead transitions. [2021-06-10 14:51:59,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 376 transitions, 14358 flow [2021-06-10 14:51:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:51:59,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:51:59,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:51:59,653 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:51:59,653 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:51:59,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:51:59,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:51:59,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:51:59,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:59,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:59,654 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:51:59,654 INFO L185 Difference]: Start difference. First operand has 340 places, 362 transitions, 13188 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:51:59,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 376 transitions, 14358 flow [2021-06-10 14:52:00,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 376 transitions, 14032 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:00,142 INFO L241 Difference]: Finished difference. Result has 342 places, 360 transitions, 13122 flow [2021-06-10 14:52:00,143 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12870, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13122, PETRI_PLACES=342, PETRI_TRANSITIONS=360} [2021-06-10 14:52:00,143 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 298 predicate places. [2021-06-10 14:52:00,143 INFO L480 AbstractCegarLoop]: Abstraction has has 342 places, 360 transitions, 13122 flow [2021-06-10 14:52:00,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:00,143 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:00,143 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:00,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-10 14:52:00,143 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:00,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:00,143 INFO L82 PathProgramCache]: Analyzing trace with hash -399550223, now seen corresponding path program 58 times [2021-06-10 14:52:00,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:00,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465200219] [2021-06-10 14:52:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:00,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:00,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:00,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:00,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:00,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:00,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:00,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:00,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:00,171 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:00,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:00,184 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:00,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:00,201 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:00,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:00,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465200219] [2021-06-10 14:52:00,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:00,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:00,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524861106] [2021-06-10 14:52:00,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:00,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:00,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:00,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:00,219 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:00,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 360 transitions, 13122 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:00,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:00,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:00,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:00,929 INFO L129 PetriNetUnfolder]: 218/3097 cut-off events. [2021-06-10 14:52:00,929 INFO L130 PetriNetUnfolder]: For 95315/96142 co-relation queries the response was YES. [2021-06-10 14:52:00,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19652 conditions, 3097 events. 218/3097 cut-off events. For 95315/96142 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 44378 event pairs, 73 based on Foata normal form. 30/3020 useless extension candidates. Maximal degree in co-relation 19527. Up to 387 conditions per place. [2021-06-10 14:52:00,962 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 179 selfloop transitions, 175 changer transitions 0/374 dead transitions. [2021-06-10 14:52:00,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 374 transitions, 14288 flow [2021-06-10 14:52:00,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:00,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:00,963 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:00,963 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:00,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:00,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:00,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:00,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:00,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:00,964 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:00,964 INFO L185 Difference]: Start difference. First operand has 342 places, 360 transitions, 13122 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:00,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 374 transitions, 14288 flow [2021-06-10 14:52:01,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 374 transitions, 13918 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-06-10 14:52:01,428 INFO L241 Difference]: Finished difference. Result has 343 places, 370 transitions, 13546 flow [2021-06-10 14:52:01,429 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12760, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13546, PETRI_PLACES=343, PETRI_TRANSITIONS=370} [2021-06-10 14:52:01,429 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 299 predicate places. [2021-06-10 14:52:01,429 INFO L480 AbstractCegarLoop]: Abstraction has has 343 places, 370 transitions, 13546 flow [2021-06-10 14:52:01,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:01,429 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:01,429 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:01,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-10 14:52:01,429 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:01,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:01,430 INFO L82 PathProgramCache]: Analyzing trace with hash 741637795, now seen corresponding path program 59 times [2021-06-10 14:52:01,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:01,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665503874] [2021-06-10 14:52:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:01,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:01,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:01,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:01,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:01,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:01,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:01,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:01,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:01,457 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:01,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:01,472 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:01,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:01,490 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:01,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:01,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665503874] [2021-06-10 14:52:01,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:01,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:01,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130393292] [2021-06-10 14:52:01,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:01,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:01,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:01,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:01,511 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:01,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 370 transitions, 13546 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:01,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:01,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:01,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:02,194 INFO L129 PetriNetUnfolder]: 218/3096 cut-off events. [2021-06-10 14:52:02,194 INFO L130 PetriNetUnfolder]: For 95612/96412 co-relation queries the response was YES. [2021-06-10 14:52:02,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19681 conditions, 3096 events. 218/3096 cut-off events. For 95612/96412 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 44344 event pairs, 73 based on Foata normal form. 28/3017 useless extension candidates. Maximal degree in co-relation 19557. Up to 387 conditions per place. [2021-06-10 14:52:02,236 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 179 selfloop transitions, 172 changer transitions 3/374 dead transitions. [2021-06-10 14:52:02,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 374 transitions, 14342 flow [2021-06-10 14:52:02,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:02,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:02,237 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:02,237 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:02,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:02,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:02,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:02,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:02,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:02,238 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:02,238 INFO L185 Difference]: Start difference. First operand has 343 places, 370 transitions, 13546 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:02,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 374 transitions, 14342 flow [2021-06-10 14:52:02,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 374 transitions, 13930 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:02,765 INFO L241 Difference]: Finished difference. Result has 347 places, 367 transitions, 13331 flow [2021-06-10 14:52:02,765 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=13134, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13331, PETRI_PLACES=347, PETRI_TRANSITIONS=367} [2021-06-10 14:52:02,765 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 303 predicate places. [2021-06-10 14:52:02,765 INFO L480 AbstractCegarLoop]: Abstraction has has 347 places, 367 transitions, 13331 flow [2021-06-10 14:52:02,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:02,766 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:02,766 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:02,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-10 14:52:02,766 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:02,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:02,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1895789635, now seen corresponding path program 60 times [2021-06-10 14:52:02,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:02,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385989651] [2021-06-10 14:52:02,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:02,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:02,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:02,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:02,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:02,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:02,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:02,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:02,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:02,805 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:02,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:02,833 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:02,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:02,851 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:02,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:02,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385989651] [2021-06-10 14:52:02,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:02,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:02,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905805645] [2021-06-10 14:52:02,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:02,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:02,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:02,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:02,871 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:02,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 367 transitions, 13331 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:02,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:02,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:02,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:03,532 INFO L129 PetriNetUnfolder]: 217/3075 cut-off events. [2021-06-10 14:52:03,533 INFO L130 PetriNetUnfolder]: For 96540/97335 co-relation queries the response was YES. [2021-06-10 14:52:03,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19702 conditions, 3075 events. 217/3075 cut-off events. For 96540/97335 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 43982 event pairs, 73 based on Foata normal form. 28/2997 useless extension candidates. Maximal degree in co-relation 19577. Up to 387 conditions per place. [2021-06-10 14:52:03,572 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 187 selfloop transitions, 162 changer transitions 2/371 dead transitions. [2021-06-10 14:52:03,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 371 transitions, 14129 flow [2021-06-10 14:52:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:03,573 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:03,573 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:03,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:03,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:03,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:03,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:03,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:03,574 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:03,574 INFO L185 Difference]: Start difference. First operand has 347 places, 367 transitions, 13331 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:03,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 371 transitions, 14129 flow [2021-06-10 14:52:04,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 371 transitions, 13787 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-06-10 14:52:04,033 INFO L241 Difference]: Finished difference. Result has 347 places, 365 transitions, 13239 flow [2021-06-10 14:52:04,033 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=13005, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13239, PETRI_PLACES=347, PETRI_TRANSITIONS=365} [2021-06-10 14:52:04,033 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 303 predicate places. [2021-06-10 14:52:04,033 INFO L480 AbstractCegarLoop]: Abstraction has has 347 places, 365 transitions, 13239 flow [2021-06-10 14:52:04,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:04,033 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:04,033 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:04,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-10 14:52:04,033 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:04,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:04,034 INFO L82 PathProgramCache]: Analyzing trace with hash 415491107, now seen corresponding path program 61 times [2021-06-10 14:52:04,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:04,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879329902] [2021-06-10 14:52:04,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:04,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:04,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:04,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:04,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:04,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:04,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:04,056 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:04,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:04,070 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:52:04,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:52:04,094 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:04,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:04,112 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:04,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:04,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879329902] [2021-06-10 14:52:04,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:04,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:04,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017810153] [2021-06-10 14:52:04,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:04,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:04,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:04,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:04,130 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:04,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 365 transitions, 13239 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:04,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:04,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:04,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:04,762 INFO L129 PetriNetUnfolder]: 216/3067 cut-off events. [2021-06-10 14:52:04,762 INFO L130 PetriNetUnfolder]: For 93700/94500 co-relation queries the response was YES. [2021-06-10 14:52:04,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19424 conditions, 3067 events. 216/3067 cut-off events. For 93700/94500 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 43883 event pairs, 57 based on Foata normal form. 25/2985 useless extension candidates. Maximal degree in co-relation 19300. Up to 381 conditions per place. [2021-06-10 14:52:04,801 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 228 selfloop transitions, 148 changer transitions 1/397 dead transitions. [2021-06-10 14:52:04,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 397 transitions, 15052 flow [2021-06-10 14:52:04,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:04,802 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:04,802 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:04,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:04,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:04,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:04,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:04,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:04,803 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:04,803 INFO L185 Difference]: Start difference. First operand has 347 places, 365 transitions, 13239 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:04,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 397 transitions, 15052 flow [2021-06-10 14:52:05,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 397 transitions, 14701 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:52:05,285 INFO L241 Difference]: Finished difference. Result has 350 places, 375 transitions, 13741 flow [2021-06-10 14:52:05,285 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=12913, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13741, PETRI_PLACES=350, PETRI_TRANSITIONS=375} [2021-06-10 14:52:05,285 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 306 predicate places. [2021-06-10 14:52:05,285 INFO L480 AbstractCegarLoop]: Abstraction has has 350 places, 375 transitions, 13741 flow [2021-06-10 14:52:05,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:05,285 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:05,286 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:05,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-10 14:52:05,286 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:05,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:05,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1914439581, now seen corresponding path program 62 times [2021-06-10 14:52:05,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:05,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939120836] [2021-06-10 14:52:05,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:05,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:05,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:05,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:05,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:05,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:05,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:05,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:05,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:05,316 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:05,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:05,328 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:05,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:05,345 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:05,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:05,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939120836] [2021-06-10 14:52:05,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:05,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:05,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174643331] [2021-06-10 14:52:05,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:05,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:05,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:05,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:05,363 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:05,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 375 transitions, 13741 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:05,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:05,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:05,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:06,089 INFO L129 PetriNetUnfolder]: 216/3276 cut-off events. [2021-06-10 14:52:06,089 INFO L130 PetriNetUnfolder]: For 102733/103529 co-relation queries the response was YES. [2021-06-10 14:52:06,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20709 conditions, 3276 events. 216/3276 cut-off events. For 102733/103529 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 47504 event pairs, 49 based on Foata normal form. 19/3186 useless extension candidates. Maximal degree in co-relation 20584. Up to 408 conditions per place. [2021-06-10 14:52:06,132 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 273 selfloop transitions, 127 changer transitions 3/423 dead transitions. [2021-06-10 14:52:06,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 423 transitions, 16401 flow [2021-06-10 14:52:06,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:06,133 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:06,133 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:06,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:06,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:06,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:06,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:06,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:06,134 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:06,134 INFO L185 Difference]: Start difference. First operand has 350 places, 375 transitions, 13741 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:06,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 423 transitions, 16401 flow [2021-06-10 14:52:06,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 423 transitions, 16281 flow, removed 44 selfloop flow, removed 2 redundant places. [2021-06-10 14:52:06,673 INFO L241 Difference]: Finished difference. Result has 359 places, 387 transitions, 14567 flow [2021-06-10 14:52:06,674 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=13653, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14567, PETRI_PLACES=359, PETRI_TRANSITIONS=387} [2021-06-10 14:52:06,674 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 315 predicate places. [2021-06-10 14:52:06,674 INFO L480 AbstractCegarLoop]: Abstraction has has 359 places, 387 transitions, 14567 flow [2021-06-10 14:52:06,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:06,674 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:06,674 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:06,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-10 14:52:06,674 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:06,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1968912401, now seen corresponding path program 63 times [2021-06-10 14:52:06,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:06,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296018518] [2021-06-10 14:52:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:06,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:06,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:06,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:06,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:06,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:06,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:06,696 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:06,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:06,712 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:52:06,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:52:06,733 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:06,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:06,751 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:06,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:06,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296018518] [2021-06-10 14:52:06,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:06,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:06,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121171595] [2021-06-10 14:52:06,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:06,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:06,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:06,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:06,768 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:06,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 387 transitions, 14567 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:06,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:06,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:06,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:07,519 INFO L129 PetriNetUnfolder]: 215/3262 cut-off events. [2021-06-10 14:52:07,519 INFO L130 PetriNetUnfolder]: For 108425/109291 co-relation queries the response was YES. [2021-06-10 14:52:07,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20976 conditions, 3262 events. 215/3262 cut-off events. For 108425/109291 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 47282 event pairs, 61 based on Foata normal form. 25/3179 useless extension candidates. Maximal degree in co-relation 20847. Up to 381 conditions per place. [2021-06-10 14:52:07,560 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 208 selfloop transitions, 171 changer transitions 2/401 dead transitions. [2021-06-10 14:52:07,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 401 transitions, 15771 flow [2021-06-10 14:52:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:07,561 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:07,561 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:07,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:07,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:07,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:07,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:07,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:07,562 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:07,562 INFO L185 Difference]: Start difference. First operand has 359 places, 387 transitions, 14567 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:07,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 401 transitions, 15771 flow [2021-06-10 14:52:08,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 401 transitions, 15681 flow, removed 27 selfloop flow, removed 3 redundant places. [2021-06-10 14:52:08,143 INFO L241 Difference]: Finished difference. Result has 364 places, 389 transitions, 14982 flow [2021-06-10 14:52:08,143 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14485, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14982, PETRI_PLACES=364, PETRI_TRANSITIONS=389} [2021-06-10 14:52:08,144 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 320 predicate places. [2021-06-10 14:52:08,144 INFO L480 AbstractCegarLoop]: Abstraction has has 364 places, 389 transitions, 14982 flow [2021-06-10 14:52:08,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:08,144 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:08,144 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:08,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-10 14:52:08,144 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:08,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:08,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1587477209, now seen corresponding path program 64 times [2021-06-10 14:52:08,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:08,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620544859] [2021-06-10 14:52:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:08,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:08,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:08,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:08,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:08,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:08,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:08,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:08,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:08,181 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:52:08,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:52:08,195 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:08,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:08,213 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:08,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:08,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620544859] [2021-06-10 14:52:08,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:08,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:08,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339561446] [2021-06-10 14:52:08,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:08,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:08,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:08,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:08,232 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:08,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 389 transitions, 14982 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:08,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:08,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:08,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:08,983 INFO L129 PetriNetUnfolder]: 214/3250 cut-off events. [2021-06-10 14:52:08,983 INFO L130 PetriNetUnfolder]: For 111910/112776 co-relation queries the response was YES. [2021-06-10 14:52:09,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21175 conditions, 3250 events. 214/3250 cut-off events. For 111910/112776 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 47064 event pairs, 61 based on Foata normal form. 25/3167 useless extension candidates. Maximal degree in co-relation 21046. Up to 381 conditions per place. [2021-06-10 14:52:09,038 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 203 selfloop transitions, 174 changer transitions 2/399 dead transitions. [2021-06-10 14:52:09,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 399 transitions, 16018 flow [2021-06-10 14:52:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:09,039 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:09,039 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:09,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:09,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:09,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:09,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:09,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:09,040 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:09,040 INFO L185 Difference]: Start difference. First operand has 364 places, 389 transitions, 14982 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:09,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 399 transitions, 16018 flow [2021-06-10 14:52:09,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 399 transitions, 15733 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:09,678 INFO L241 Difference]: Finished difference. Result has 367 places, 387 transitions, 14952 flow [2021-06-10 14:52:09,678 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14705, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14952, PETRI_PLACES=367, PETRI_TRANSITIONS=387} [2021-06-10 14:52:09,679 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 323 predicate places. [2021-06-10 14:52:09,679 INFO L480 AbstractCegarLoop]: Abstraction has has 367 places, 387 transitions, 14952 flow [2021-06-10 14:52:09,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:09,679 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:09,679 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:09,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-10 14:52:09,679 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:09,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:09,679 INFO L82 PathProgramCache]: Analyzing trace with hash -2100441315, now seen corresponding path program 65 times [2021-06-10 14:52:09,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:09,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278280638] [2021-06-10 14:52:09,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:09,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:09,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:09,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:09,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:09,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:09,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:09,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:09,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:09,719 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:09,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:09,732 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:09,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:09,759 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:09,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:09,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278280638] [2021-06-10 14:52:09,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:09,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:09,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722078106] [2021-06-10 14:52:09,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:09,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:09,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:09,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:09,778 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:09,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 387 transitions, 14952 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:09,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:09,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:09,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:10,565 INFO L129 PetriNetUnfolder]: 213/3290 cut-off events. [2021-06-10 14:52:10,565 INFO L130 PetriNetUnfolder]: For 112207/113069 co-relation queries the response was YES. [2021-06-10 14:52:10,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21385 conditions, 3290 events. 213/3290 cut-off events. For 112207/113069 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 47757 event pairs, 57 based on Foata normal form. 23/3205 useless extension candidates. Maximal degree in co-relation 21256. Up to 402 conditions per place. [2021-06-10 14:52:10,604 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 259 selfloop transitions, 146 changer transitions 2/427 dead transitions. [2021-06-10 14:52:10,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 427 transitions, 17259 flow [2021-06-10 14:52:10,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:10,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:10,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:10,605 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:10,606 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:10,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:10,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:10,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:10,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:10,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:10,607 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:10,607 INFO L185 Difference]: Start difference. First operand has 367 places, 387 transitions, 14952 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:10,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 427 transitions, 17259 flow [2021-06-10 14:52:11,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 427 transitions, 16965 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:11,182 INFO L241 Difference]: Finished difference. Result has 372 places, 401 transitions, 15728 flow [2021-06-10 14:52:11,183 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14687, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15728, PETRI_PLACES=372, PETRI_TRANSITIONS=401} [2021-06-10 14:52:11,183 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 328 predicate places. [2021-06-10 14:52:11,183 INFO L480 AbstractCegarLoop]: Abstraction has has 372 places, 401 transitions, 15728 flow [2021-06-10 14:52:11,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:11,183 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:11,183 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:11,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-10 14:52:11,183 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:11,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:11,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1309911901, now seen corresponding path program 66 times [2021-06-10 14:52:11,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:11,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090134499] [2021-06-10 14:52:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:11,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:11,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:11,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:11,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:11,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:11,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:11,201 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:11,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:11,215 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:11,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:11,229 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:11,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:11,246 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:11,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:11,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090134499] [2021-06-10 14:52:11,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:11,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:11,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457295385] [2021-06-10 14:52:11,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:11,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:11,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:11,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:11,266 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:11,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 401 transitions, 15728 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:11,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:11,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:11,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:12,040 INFO L129 PetriNetUnfolder]: 212/3278 cut-off events. [2021-06-10 14:52:12,041 INFO L130 PetriNetUnfolder]: For 114528/115762 co-relation queries the response was YES. [2021-06-10 14:52:12,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21328 conditions, 3278 events. 212/3278 cut-off events. For 114528/115762 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 47890 event pairs, 57 based on Foata normal form. 35/3205 useless extension candidates. Maximal degree in co-relation 21196. Up to 408 conditions per place. [2021-06-10 14:52:12,086 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 237 selfloop transitions, 157 changer transitions 2/416 dead transitions. [2021-06-10 14:52:12,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 416 transitions, 16972 flow [2021-06-10 14:52:12,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:12,087 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:12,087 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:12,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:12,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:12,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:12,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:12,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:12,088 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:12,088 INFO L185 Difference]: Start difference. First operand has 372 places, 401 transitions, 15728 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:12,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 416 transitions, 16972 flow [2021-06-10 14:52:12,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 416 transitions, 16768 flow, removed 34 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:12,736 INFO L241 Difference]: Finished difference. Result has 377 places, 405 transitions, 16050 flow [2021-06-10 14:52:12,736 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15536, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16050, PETRI_PLACES=377, PETRI_TRANSITIONS=405} [2021-06-10 14:52:12,736 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 333 predicate places. [2021-06-10 14:52:12,736 INFO L480 AbstractCegarLoop]: Abstraction has has 377 places, 405 transitions, 16050 flow [2021-06-10 14:52:12,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:12,736 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:12,736 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:12,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-10 14:52:12,737 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:12,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:12,737 INFO L82 PathProgramCache]: Analyzing trace with hash 515105685, now seen corresponding path program 1 times [2021-06-10 14:52:12,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:12,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210696280] [2021-06-10 14:52:12,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:12,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:12,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:12,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:12,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:52:12,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:12,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:12,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210696280] [2021-06-10 14:52:12,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:12,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:52:12,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162817932] [2021-06-10 14:52:12,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:52:12,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:12,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:52:12,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:52:12,759 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 63 [2021-06-10 14:52:12,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 405 transitions, 16050 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:12,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:12,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 63 [2021-06-10 14:52:12,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:13,353 INFO L129 PetriNetUnfolder]: 0/2845 cut-off events. [2021-06-10 14:52:13,354 INFO L130 PetriNetUnfolder]: For 110382/110851 co-relation queries the response was YES. [2021-06-10 14:52:13,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19428 conditions, 2845 events. 0/2845 cut-off events. For 110382/110851 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 43278 event pairs, 0 based on Foata normal form. 141/2895 useless extension candidates. Maximal degree in co-relation 0. Up to 254 conditions per place. [2021-06-10 14:52:13,359 INFO L132 encePairwiseOnDemand]: 61/63 looper letters, 1 selfloop transitions, 1 changer transitions 12/403 dead transitions. [2021-06-10 14:52:13,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 403 transitions, 16048 flow [2021-06-10 14:52:13,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:52:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:52:13,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2021-06-10 14:52:13,359 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-06-10 14:52:13,359 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 171 transitions. [2021-06-10 14:52:13,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 171 transitions. [2021-06-10 14:52:13,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:13,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 171 transitions. [2021-06-10 14:52:13,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:13,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:13,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:13,360 INFO L185 Difference]: Start difference. First operand has 377 places, 405 transitions, 16050 flow. Second operand 3 states and 171 transitions. [2021-06-10 14:52:13,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 403 transitions, 16048 flow [2021-06-10 14:52:13,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 403 transitions, 15793 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:13,972 INFO L241 Difference]: Finished difference. Result has 374 places, 391 transitions, 15203 flow [2021-06-10 14:52:13,972 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15789, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=15203, PETRI_PLACES=374, PETRI_TRANSITIONS=391} [2021-06-10 14:52:13,972 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 330 predicate places. [2021-06-10 14:52:13,972 INFO L480 AbstractCegarLoop]: Abstraction has has 374 places, 391 transitions, 15203 flow [2021-06-10 14:52:13,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:13,972 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:13,972 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:13,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-10 14:52:13,973 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:13,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:13,973 INFO L82 PathProgramCache]: Analyzing trace with hash -371705543, now seen corresponding path program 67 times [2021-06-10 14:52:13,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:13,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264359892] [2021-06-10 14:52:13,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:13,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:13,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:13,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:13,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:13,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:13,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:13,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:13,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:14,014 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:52:14,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:52:14,036 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:52:14,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:52:14,054 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:14,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:14,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264359892] [2021-06-10 14:52:14,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:14,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:14,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037773231] [2021-06-10 14:52:14,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:14,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:14,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:14,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:14,073 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:14,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 391 transitions, 15203 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:14,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:14,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:14,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:14,792 INFO L129 PetriNetUnfolder]: 57/2923 cut-off events. [2021-06-10 14:52:14,792 INFO L130 PetriNetUnfolder]: For 108119/109425 co-relation queries the response was YES. [2021-06-10 14:52:14,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20411 conditions, 2923 events. 57/2923 cut-off events. For 108119/109425 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 43647 event pairs, 57 based on Foata normal form. 37/2864 useless extension candidates. Maximal degree in co-relation 20281. Up to 375 conditions per place. [2021-06-10 14:52:14,820 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 206 selfloop transitions, 170 changer transitions 1/395 dead transitions. [2021-06-10 14:52:14,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 395 transitions, 16029 flow [2021-06-10 14:52:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:14,821 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:14,821 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:14,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:14,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:14,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:14,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:14,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:14,822 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:14,822 INFO L185 Difference]: Start difference. First operand has 374 places, 391 transitions, 15203 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:14,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 395 transitions, 16029 flow [2021-06-10 14:52:15,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 395 transitions, 15830 flow, removed 84 selfloop flow, removed 14 redundant places. [2021-06-10 14:52:15,475 INFO L241 Difference]: Finished difference. Result has 357 places, 390 transitions, 15356 flow [2021-06-10 14:52:15,475 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15068, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15356, PETRI_PLACES=357, PETRI_TRANSITIONS=390} [2021-06-10 14:52:15,475 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 313 predicate places. [2021-06-10 14:52:15,475 INFO L480 AbstractCegarLoop]: Abstraction has has 357 places, 390 transitions, 15356 flow [2021-06-10 14:52:15,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:15,476 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:15,476 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:15,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-10 14:52:15,476 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:15,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:15,476 INFO L82 PathProgramCache]: Analyzing trace with hash -803486009, now seen corresponding path program 68 times [2021-06-10 14:52:15,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:15,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623769391] [2021-06-10 14:52:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:15,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:15,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:15,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:15,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:15,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:15,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:15,496 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:15,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:15,513 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:52:15,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:52:15,537 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:15,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:15,555 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:15,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:15,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623769391] [2021-06-10 14:52:15,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:15,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:15,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288042845] [2021-06-10 14:52:15,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:15,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:15,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:15,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:15,576 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:15,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 390 transitions, 15356 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:15,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:15,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:15,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:16,254 INFO L129 PetriNetUnfolder]: 57/2919 cut-off events. [2021-06-10 14:52:16,254 INFO L130 PetriNetUnfolder]: For 98776/100078 co-relation queries the response was YES. [2021-06-10 14:52:16,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18695 conditions, 2919 events. 57/2919 cut-off events. For 98776/100078 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 43530 event pairs, 57 based on Foata normal form. 35/2858 useless extension candidates. Maximal degree in co-relation 18577. Up to 375 conditions per place. [2021-06-10 14:52:16,275 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 208 selfloop transitions, 167 changer transitions 1/394 dead transitions. [2021-06-10 14:52:16,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 394 transitions, 16124 flow [2021-06-10 14:52:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:16,276 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:16,277 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:16,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:16,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:16,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:16,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:16,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:16,278 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:16,278 INFO L185 Difference]: Start difference. First operand has 357 places, 390 transitions, 15356 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:16,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 394 transitions, 16124 flow [2021-06-10 14:52:16,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 394 transitions, 15820 flow, removed 20 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:16,880 INFO L241 Difference]: Finished difference. Result has 359 places, 389 transitions, 15339 flow [2021-06-10 14:52:16,880 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15060, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15339, PETRI_PLACES=359, PETRI_TRANSITIONS=389} [2021-06-10 14:52:16,880 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 315 predicate places. [2021-06-10 14:52:16,880 INFO L480 AbstractCegarLoop]: Abstraction has has 359 places, 389 transitions, 15339 flow [2021-06-10 14:52:16,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:16,880 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:16,880 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:16,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-10 14:52:16,880 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:16,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:16,881 INFO L82 PathProgramCache]: Analyzing trace with hash -310455625, now seen corresponding path program 69 times [2021-06-10 14:52:16,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:16,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009782019] [2021-06-10 14:52:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:16,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:16,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:16,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:16,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:16,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:16,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:16,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:16,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:16,917 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:52:16,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:52:16,940 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:16,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:16,958 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:16,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:16,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009782019] [2021-06-10 14:52:16,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:16,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:16,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909824520] [2021-06-10 14:52:16,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:16,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:16,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:16,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:16,977 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:16,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 389 transitions, 15339 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:16,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:16,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:16,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:17,659 INFO L129 PetriNetUnfolder]: 57/2911 cut-off events. [2021-06-10 14:52:17,659 INFO L130 PetriNetUnfolder]: For 97709/99011 co-relation queries the response was YES. [2021-06-10 14:52:17,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18712 conditions, 2911 events. 57/2911 cut-off events. For 97709/99011 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 43462 event pairs, 57 based on Foata normal form. 35/2850 useless extension candidates. Maximal degree in co-relation 18595. Up to 375 conditions per place. [2021-06-10 14:52:17,680 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 211 selfloop transitions, 163 changer transitions 1/393 dead transitions. [2021-06-10 14:52:17,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 393 transitions, 16105 flow [2021-06-10 14:52:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:17,681 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:17,681 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:17,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:17,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:17,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:17,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:17,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:17,682 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:17,682 INFO L185 Difference]: Start difference. First operand has 359 places, 389 transitions, 15339 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:17,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 393 transitions, 16105 flow [2021-06-10 14:52:18,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 393 transitions, 15778 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:18,243 INFO L241 Difference]: Finished difference. Result has 361 places, 388 transitions, 15294 flow [2021-06-10 14:52:18,243 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15020, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15294, PETRI_PLACES=361, PETRI_TRANSITIONS=388} [2021-06-10 14:52:18,243 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 317 predicate places. [2021-06-10 14:52:18,243 INFO L480 AbstractCegarLoop]: Abstraction has has 361 places, 388 transitions, 15294 flow [2021-06-10 14:52:18,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:18,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:18,244 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:18,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-10 14:52:18,244 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:18,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:18,244 INFO L82 PathProgramCache]: Analyzing trace with hash 912777655, now seen corresponding path program 70 times [2021-06-10 14:52:18,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:18,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629615444] [2021-06-10 14:52:18,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:18,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:18,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:18,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:18,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:18,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:18,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:18,266 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:18,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:18,281 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:52:18,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:52:18,302 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:52:18,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:52:18,320 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:18,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:18,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629615444] [2021-06-10 14:52:18,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:18,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:18,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866803719] [2021-06-10 14:52:18,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:18,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:18,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:18,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:18,340 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:18,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 388 transitions, 15294 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:18,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:18,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:18,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:19,006 INFO L129 PetriNetUnfolder]: 57/2903 cut-off events. [2021-06-10 14:52:19,006 INFO L130 PetriNetUnfolder]: For 97533/98839 co-relation queries the response was YES. [2021-06-10 14:52:19,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18697 conditions, 2903 events. 57/2903 cut-off events. For 97533/98839 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 43305 event pairs, 57 based on Foata normal form. 37/2844 useless extension candidates. Maximal degree in co-relation 18580. Up to 402 conditions per place. [2021-06-10 14:52:19,027 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 223 selfloop transitions, 152 changer transitions 2/395 dead transitions. [2021-06-10 14:52:19,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 395 transitions, 16158 flow [2021-06-10 14:52:19,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:19,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:19,028 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:19,028 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:19,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:19,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:19,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:19,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:19,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:19,029 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:19,029 INFO L185 Difference]: Start difference. First operand has 361 places, 388 transitions, 15294 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:19,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 395 transitions, 16158 flow [2021-06-10 14:52:19,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 395 transitions, 15834 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:19,617 INFO L241 Difference]: Finished difference. Result has 363 places, 386 transitions, 15189 flow [2021-06-10 14:52:19,617 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14978, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15189, PETRI_PLACES=363, PETRI_TRANSITIONS=386} [2021-06-10 14:52:19,617 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 319 predicate places. [2021-06-10 14:52:19,617 INFO L480 AbstractCegarLoop]: Abstraction has has 363 places, 386 transitions, 15189 flow [2021-06-10 14:52:19,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:19,617 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:19,617 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:19,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-10 14:52:19,617 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:19,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:19,618 INFO L82 PathProgramCache]: Analyzing trace with hash -52434409, now seen corresponding path program 71 times [2021-06-10 14:52:19,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:19,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883462972] [2021-06-10 14:52:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:19,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:19,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:19,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:19,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:19,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:19,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:19,636 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:19,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:19,651 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:52:19,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:52:19,672 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:52:19,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:52:19,689 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:19,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:19,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883462972] [2021-06-10 14:52:19,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:19,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:19,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380647476] [2021-06-10 14:52:19,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:19,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:19,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:19,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:19,710 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:19,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 386 transitions, 15189 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:19,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:19,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:19,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:20,399 INFO L129 PetriNetUnfolder]: 57/2889 cut-off events. [2021-06-10 14:52:20,399 INFO L130 PetriNetUnfolder]: For 97014/98320 co-relation queries the response was YES. [2021-06-10 14:52:20,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18604 conditions, 2889 events. 57/2889 cut-off events. For 97014/98320 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 43072 event pairs, 57 based on Foata normal form. 37/2830 useless extension candidates. Maximal degree in co-relation 18487. Up to 402 conditions per place. [2021-06-10 14:52:20,419 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 226 selfloop transitions, 147 changer transitions 2/393 dead transitions. [2021-06-10 14:52:20,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 393 transitions, 16049 flow [2021-06-10 14:52:20,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:20,420 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:20,420 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:20,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:20,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:20,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:20,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:20,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:20,421 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:20,421 INFO L185 Difference]: Start difference. First operand has 363 places, 386 transitions, 15189 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:20,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 393 transitions, 16049 flow [2021-06-10 14:52:20,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 393 transitions, 15889 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:20,955 INFO L241 Difference]: Finished difference. Result has 367 places, 387 transitions, 15378 flow [2021-06-10 14:52:20,955 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15037, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15378, PETRI_PLACES=367, PETRI_TRANSITIONS=387} [2021-06-10 14:52:20,955 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 323 predicate places. [2021-06-10 14:52:20,955 INFO L480 AbstractCegarLoop]: Abstraction has has 367 places, 387 transitions, 15378 flow [2021-06-10 14:52:20,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:20,955 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:20,955 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:20,955 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-10 14:52:20,955 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:20,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:20,956 INFO L82 PathProgramCache]: Analyzing trace with hash 547707503, now seen corresponding path program 72 times [2021-06-10 14:52:20,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:20,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191645760] [2021-06-10 14:52:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:20,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:20,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:20,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:20,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:20,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:20,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:20,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:20,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:20,991 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:52:20,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:52:21,014 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:21,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:21,032 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:21,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:21,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191645760] [2021-06-10 14:52:21,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:21,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:21,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631946964] [2021-06-10 14:52:21,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:21,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:21,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:21,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:21,050 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:21,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 387 transitions, 15378 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:21,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:21,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:21,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:21,722 INFO L129 PetriNetUnfolder]: 57/2880 cut-off events. [2021-06-10 14:52:21,723 INFO L130 PetriNetUnfolder]: For 98465/99767 co-relation queries the response was YES. [2021-06-10 14:52:21,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18773 conditions, 2880 events. 57/2880 cut-off events. For 98465/99767 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 42918 event pairs, 57 based on Foata normal form. 35/2820 useless extension candidates. Maximal degree in co-relation 18656. Up to 402 conditions per place. [2021-06-10 14:52:21,744 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 226 selfloop transitions, 145 changer transitions 2/391 dead transitions. [2021-06-10 14:52:21,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 391 transitions, 16140 flow [2021-06-10 14:52:21,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:21,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:21,745 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:21,745 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:21,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:21,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:21,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:21,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:21,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:21,746 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:21,746 INFO L185 Difference]: Start difference. First operand has 367 places, 387 transitions, 15378 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:21,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 391 transitions, 16140 flow [2021-06-10 14:52:22,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 391 transitions, 15898 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:22,310 INFO L241 Difference]: Finished difference. Result has 370 places, 385 transitions, 15339 flow [2021-06-10 14:52:22,311 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15144, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15339, PETRI_PLACES=370, PETRI_TRANSITIONS=385} [2021-06-10 14:52:22,311 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 326 predicate places. [2021-06-10 14:52:22,311 INFO L480 AbstractCegarLoop]: Abstraction has has 370 places, 385 transitions, 15339 flow [2021-06-10 14:52:22,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:22,311 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:22,311 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:22,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-10 14:52:22,311 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:22,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:22,311 INFO L82 PathProgramCache]: Analyzing trace with hash 893460373, now seen corresponding path program 73 times [2021-06-10 14:52:22,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:22,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518042536] [2021-06-10 14:52:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:22,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:22,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:22,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:22,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:22,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:22,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:22,330 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:22,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:22,346 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:22,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:22,359 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:22,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:22,381 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:22,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:22,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518042536] [2021-06-10 14:52:22,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:22,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:22,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182612665] [2021-06-10 14:52:22,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:22,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:22,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:22,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:22,399 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:22,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 385 transitions, 15339 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:22,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:22,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:22,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:23,146 INFO L129 PetriNetUnfolder]: 57/2871 cut-off events. [2021-06-10 14:52:23,146 INFO L130 PetriNetUnfolder]: For 98080/99382 co-relation queries the response was YES. [2021-06-10 14:52:23,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18791 conditions, 2871 events. 57/2871 cut-off events. For 98080/99382 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 42737 event pairs, 57 based on Foata normal form. 35/2811 useless extension candidates. Maximal degree in co-relation 18674. Up to 402 conditions per place. [2021-06-10 14:52:23,162 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 227 selfloop transitions, 144 changer transitions 2/391 dead transitions. [2021-06-10 14:52:23,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 391 transitions, 16187 flow [2021-06-10 14:52:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:23,163 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:23,163 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:23,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:23,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:23,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:23,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:23,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:23,164 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:23,164 INFO L185 Difference]: Start difference. First operand has 370 places, 385 transitions, 15339 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:23,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 391 transitions, 16187 flow [2021-06-10 14:52:23,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 391 transitions, 15897 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:23,671 INFO L241 Difference]: Finished difference. Result has 373 places, 385 transitions, 15349 flow [2021-06-10 14:52:23,671 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15057, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15349, PETRI_PLACES=373, PETRI_TRANSITIONS=385} [2021-06-10 14:52:23,671 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 329 predicate places. [2021-06-10 14:52:23,671 INFO L480 AbstractCegarLoop]: Abstraction has has 373 places, 385 transitions, 15349 flow [2021-06-10 14:52:23,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:23,671 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:23,671 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:23,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-10 14:52:23,671 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:23,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:23,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1594678421, now seen corresponding path program 74 times [2021-06-10 14:52:23,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:23,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565555607] [2021-06-10 14:52:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:23,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:23,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:23,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:23,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:23,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:23,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:23,699 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:23,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:23,709 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:23,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:23,723 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:23,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:23,740 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:23,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:23,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565555607] [2021-06-10 14:52:23,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:23,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:23,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490321492] [2021-06-10 14:52:23,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:23,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:23,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:23,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:23,759 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:23,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 385 transitions, 15349 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:23,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:23,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:23,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:24,429 INFO L129 PetriNetUnfolder]: 57/2861 cut-off events. [2021-06-10 14:52:24,429 INFO L130 PetriNetUnfolder]: For 97943/99249 co-relation queries the response was YES. [2021-06-10 14:52:24,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18745 conditions, 2861 events. 57/2861 cut-off events. For 97943/99249 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 42520 event pairs, 57 based on Foata normal form. 37/2803 useless extension candidates. Maximal degree in co-relation 18627. Up to 374 conditions per place. [2021-06-10 14:52:24,451 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 219 selfloop transitions, 150 changer transitions 2/389 dead transitions. [2021-06-10 14:52:24,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 389 transitions, 16107 flow [2021-06-10 14:52:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:24,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:24,452 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:24,452 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:24,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:24,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:24,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:24,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:24,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:24,453 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:24,453 INFO L185 Difference]: Start difference. First operand has 373 places, 385 transitions, 15349 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:24,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 389 transitions, 16107 flow [2021-06-10 14:52:25,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 389 transitions, 15821 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:25,040 INFO L241 Difference]: Finished difference. Result has 375 places, 383 transitions, 15269 flow [2021-06-10 14:52:25,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15071, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15269, PETRI_PLACES=375, PETRI_TRANSITIONS=383} [2021-06-10 14:52:25,040 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 331 predicate places. [2021-06-10 14:52:25,040 INFO L480 AbstractCegarLoop]: Abstraction has has 375 places, 383 transitions, 15269 flow [2021-06-10 14:52:25,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:25,040 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:25,040 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:25,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-10 14:52:25,041 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:25,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:25,041 INFO L82 PathProgramCache]: Analyzing trace with hash -316682791, now seen corresponding path program 75 times [2021-06-10 14:52:25,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:25,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626657738] [2021-06-10 14:52:25,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:25,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:25,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:25,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:25,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:25,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:25,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:25,059 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:25,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:25,068 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:25,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:25,080 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:25,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:25,096 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:25,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:25,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626657738] [2021-06-10 14:52:25,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:25,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:25,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571683943] [2021-06-10 14:52:25,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:25,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:25,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:25,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:25,113 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:25,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 383 transitions, 15269 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:25,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:25,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:25,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:25,783 INFO L129 PetriNetUnfolder]: 57/2852 cut-off events. [2021-06-10 14:52:25,784 INFO L130 PetriNetUnfolder]: For 97304/98410 co-relation queries the response was YES. [2021-06-10 14:52:25,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18700 conditions, 2852 events. 57/2852 cut-off events. For 97304/98410 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 42335 event pairs, 57 based on Foata normal form. 31/2789 useless extension candidates. Maximal degree in co-relation 18582. Up to 374 conditions per place. [2021-06-10 14:52:25,805 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 221 selfloop transitions, 147 changer transitions 1/387 dead transitions. [2021-06-10 14:52:25,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 387 transitions, 16023 flow [2021-06-10 14:52:25,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:25,806 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:25,806 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:25,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:25,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:25,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:25,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:25,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:25,807 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:25,807 INFO L185 Difference]: Start difference. First operand has 375 places, 383 transitions, 15269 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:25,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 387 transitions, 16023 flow [2021-06-10 14:52:26,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 387 transitions, 15774 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:26,371 INFO L241 Difference]: Finished difference. Result has 378 places, 382 transitions, 15262 flow [2021-06-10 14:52:26,371 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15028, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15262, PETRI_PLACES=378, PETRI_TRANSITIONS=382} [2021-06-10 14:52:26,371 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 334 predicate places. [2021-06-10 14:52:26,371 INFO L480 AbstractCegarLoop]: Abstraction has has 378 places, 382 transitions, 15262 flow [2021-06-10 14:52:26,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:26,371 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:26,371 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:26,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-10 14:52:26,371 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:26,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:26,372 INFO L82 PathProgramCache]: Analyzing trace with hash 876251847, now seen corresponding path program 76 times [2021-06-10 14:52:26,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:26,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119090948] [2021-06-10 14:52:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:26,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:26,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:26,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:26,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:26,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:26,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:26,401 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:26,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:26,411 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:52:26,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:52:26,433 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:52:26,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:52:26,464 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:26,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:26,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119090948] [2021-06-10 14:52:26,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:26,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:26,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127074063] [2021-06-10 14:52:26,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:26,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:26,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:26,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:26,484 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:26,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 382 transitions, 15262 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:26,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:26,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:26,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:27,118 INFO L129 PetriNetUnfolder]: 57/2845 cut-off events. [2021-06-10 14:52:27,118 INFO L130 PetriNetUnfolder]: For 97092/98194 co-relation queries the response was YES. [2021-06-10 14:52:27,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18737 conditions, 2845 events. 57/2845 cut-off events. For 97092/98194 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 42276 event pairs, 57 based on Foata normal form. 29/2780 useless extension candidates. Maximal degree in co-relation 18619. Up to 374 conditions per place. [2021-06-10 14:52:27,139 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 214 selfloop transitions, 152 changer transitions 2/386 dead transitions. [2021-06-10 14:52:27,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 386 transitions, 16014 flow [2021-06-10 14:52:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:27,140 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:27,140 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:27,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:27,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:27,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:27,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:27,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:27,142 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:27,142 INFO L185 Difference]: Start difference. First operand has 378 places, 382 transitions, 15262 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:27,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 386 transitions, 16014 flow [2021-06-10 14:52:27,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 386 transitions, 15719 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:27,723 INFO L241 Difference]: Finished difference. Result has 380 places, 380 transitions, 15168 flow [2021-06-10 14:52:27,724 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14975, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15168, PETRI_PLACES=380, PETRI_TRANSITIONS=380} [2021-06-10 14:52:27,724 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 336 predicate places. [2021-06-10 14:52:27,724 INFO L480 AbstractCegarLoop]: Abstraction has has 380 places, 380 transitions, 15168 flow [2021-06-10 14:52:27,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:27,724 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:27,724 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:27,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-10 14:52:27,724 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:27,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:27,724 INFO L82 PathProgramCache]: Analyzing trace with hash 2093754611, now seen corresponding path program 77 times [2021-06-10 14:52:27,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:27,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570962543] [2021-06-10 14:52:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:27,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:27,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:27,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:27,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:27,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:27,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:27,747 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:27,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:27,756 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:52:27,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:52:27,781 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:27,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:27,798 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:27,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:27,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570962543] [2021-06-10 14:52:27,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:27,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:27,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573962645] [2021-06-10 14:52:27,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:27,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:27,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:27,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:27,817 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:27,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 380 transitions, 15168 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:27,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:27,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:27,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:28,469 INFO L129 PetriNetUnfolder]: 57/2836 cut-off events. [2021-06-10 14:52:28,469 INFO L130 PetriNetUnfolder]: For 96628/97730 co-relation queries the response was YES. [2021-06-10 14:52:28,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18684 conditions, 2836 events. 57/2836 cut-off events. For 96628/97730 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 42111 event pairs, 57 based on Foata normal form. 29/2772 useless extension candidates. Maximal degree in co-relation 18566. Up to 374 conditions per place. [2021-06-10 14:52:28,490 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 214 selfloop transitions, 150 changer transitions 2/384 dead transitions. [2021-06-10 14:52:28,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 384 transitions, 15916 flow [2021-06-10 14:52:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:28,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:28,491 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:28,491 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:28,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:28,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:28,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:28,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:28,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:28,492 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:28,492 INFO L185 Difference]: Start difference. First operand has 380 places, 380 transitions, 15168 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:28,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 384 transitions, 15916 flow [2021-06-10 14:52:29,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 384 transitions, 15695 flow, removed 22 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:29,059 INFO L241 Difference]: Finished difference. Result has 383 places, 378 transitions, 15148 flow [2021-06-10 14:52:29,059 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14955, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15148, PETRI_PLACES=383, PETRI_TRANSITIONS=378} [2021-06-10 14:52:29,059 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 339 predicate places. [2021-06-10 14:52:29,059 INFO L480 AbstractCegarLoop]: Abstraction has has 383 places, 378 transitions, 15148 flow [2021-06-10 14:52:29,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:29,059 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:29,059 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:29,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-10 14:52:29,059 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:29,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1007279305, now seen corresponding path program 78 times [2021-06-10 14:52:29,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:29,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567181598] [2021-06-10 14:52:29,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:29,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:29,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:29,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:29,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:29,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:29,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:29,084 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:29,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:29,093 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:52:29,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:52:29,106 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:52:29,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:52:29,124 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:29,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:29,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567181598] [2021-06-10 14:52:29,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:29,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:29,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597753196] [2021-06-10 14:52:29,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:29,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:29,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:29,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:29,145 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:29,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 378 transitions, 15148 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:29,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:29,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:29,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:29,828 INFO L129 PetriNetUnfolder]: 57/2827 cut-off events. [2021-06-10 14:52:29,828 INFO L130 PetriNetUnfolder]: For 96217/97323 co-relation queries the response was YES. [2021-06-10 14:52:29,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18736 conditions, 2827 events. 57/2827 cut-off events. For 96217/97323 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 41933 event pairs, 57 based on Foata normal form. 31/2765 useless extension candidates. Maximal degree in co-relation 18618. Up to 374 conditions per place. [2021-06-10 14:52:29,845 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 209 selfloop transitions, 153 changer transitions 2/382 dead transitions. [2021-06-10 14:52:29,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 382 transitions, 15892 flow [2021-06-10 14:52:29,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:29,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:29,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:29,846 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:29,846 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:29,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:29,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:29,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:29,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:29,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:29,847 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:29,847 INFO L185 Difference]: Start difference. First operand has 383 places, 378 transitions, 15148 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:29,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 382 transitions, 15892 flow [2021-06-10 14:52:30,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 382 transitions, 15599 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:30,381 INFO L241 Difference]: Finished difference. Result has 385 places, 376 transitions, 15058 flow [2021-06-10 14:52:30,382 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14863, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15058, PETRI_PLACES=385, PETRI_TRANSITIONS=376} [2021-06-10 14:52:30,382 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 341 predicate places. [2021-06-10 14:52:30,382 INFO L480 AbstractCegarLoop]: Abstraction has has 385 places, 376 transitions, 15058 flow [2021-06-10 14:52:30,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:30,382 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:30,382 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:30,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-10 14:52:30,382 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:30,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:30,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1884687661, now seen corresponding path program 79 times [2021-06-10 14:52:30,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:30,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073939173] [2021-06-10 14:52:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:30,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:30,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:30,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:30,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:30,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:30,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:30,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:30,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:30,409 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:52:30,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:52:30,433 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:30,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:30,450 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:30,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:30,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073939173] [2021-06-10 14:52:30,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:30,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:30,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297377780] [2021-06-10 14:52:30,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:30,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:30,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:30,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:30,471 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:30,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 376 transitions, 15058 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:30,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:30,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:30,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:31,123 INFO L129 PetriNetUnfolder]: 57/2814 cut-off events. [2021-06-10 14:52:31,123 INFO L130 PetriNetUnfolder]: For 95342/96448 co-relation queries the response was YES. [2021-06-10 14:52:31,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18623 conditions, 2814 events. 57/2814 cut-off events. For 95342/96448 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 41775 event pairs, 57 based on Foata normal form. 31/2752 useless extension candidates. Maximal degree in co-relation 18505. Up to 389 conditions per place. [2021-06-10 14:52:31,144 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 239 selfloop transitions, 138 changer transitions 1/396 dead transitions. [2021-06-10 14:52:31,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 396 transitions, 16489 flow [2021-06-10 14:52:31,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:31,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:31,145 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:31,145 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:31,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:31,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:31,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:31,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:31,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:31,146 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:31,146 INFO L185 Difference]: Start difference. First operand has 385 places, 376 transitions, 15058 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:31,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 396 transitions, 16489 flow [2021-06-10 14:52:31,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 396 transitions, 16141 flow, removed 21 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:31,716 INFO L241 Difference]: Finished difference. Result has 388 places, 382 transitions, 15306 flow [2021-06-10 14:52:31,716 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14739, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15306, PETRI_PLACES=388, PETRI_TRANSITIONS=382} [2021-06-10 14:52:31,716 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 344 predicate places. [2021-06-10 14:52:31,716 INFO L480 AbstractCegarLoop]: Abstraction has has 388 places, 382 transitions, 15306 flow [2021-06-10 14:52:31,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:31,716 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:31,717 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:31,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-10 14:52:31,717 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:31,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:31,717 INFO L82 PathProgramCache]: Analyzing trace with hash -864991399, now seen corresponding path program 80 times [2021-06-10 14:52:31,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:31,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8522700] [2021-06-10 14:52:31,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:31,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:31,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:31,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:31,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:31,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:31,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:31,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:31,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:31,753 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:31,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:31,766 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:31,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:31,787 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:31,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:31,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8522700] [2021-06-10 14:52:31,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:31,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:31,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508700160] [2021-06-10 14:52:31,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:31,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:31,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:31,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:31,806 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:31,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 382 transitions, 15306 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:31,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:31,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:31,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:32,487 INFO L129 PetriNetUnfolder]: 57/2806 cut-off events. [2021-06-10 14:52:32,488 INFO L130 PetriNetUnfolder]: For 94495/95597 co-relation queries the response was YES. [2021-06-10 14:52:32,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18536 conditions, 2806 events. 57/2806 cut-off events. For 94495/95597 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 41568 event pairs, 57 based on Foata normal form. 29/2742 useless extension candidates. Maximal degree in co-relation 18417. Up to 389 conditions per place. [2021-06-10 14:52:32,509 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 236 selfloop transitions, 139 changer transitions 2/395 dead transitions. [2021-06-10 14:52:32,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 395 transitions, 16420 flow [2021-06-10 14:52:32,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:32,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:32,510 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:32,510 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:32,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:32,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:32,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:32,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:32,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:32,512 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:32,512 INFO L185 Difference]: Start difference. First operand has 388 places, 382 transitions, 15306 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:32,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 395 transitions, 16420 flow [2021-06-10 14:52:33,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 395 transitions, 16183 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:33,077 INFO L241 Difference]: Finished difference. Result has 391 places, 389 transitions, 15652 flow [2021-06-10 14:52:33,077 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15077, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15652, PETRI_PLACES=391, PETRI_TRANSITIONS=389} [2021-06-10 14:52:33,077 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 347 predicate places. [2021-06-10 14:52:33,077 INFO L480 AbstractCegarLoop]: Abstraction has has 391 places, 389 transitions, 15652 flow [2021-06-10 14:52:33,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:33,077 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:33,077 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:33,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-10 14:52:33,077 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:33,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:33,078 INFO L82 PathProgramCache]: Analyzing trace with hash -337116445, now seen corresponding path program 81 times [2021-06-10 14:52:33,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:33,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137097222] [2021-06-10 14:52:33,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:33,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:33,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:33,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:33,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:33,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:33,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:33,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:33,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:33,121 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:52:33,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:52:33,144 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:33,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:33,162 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:33,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:33,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137097222] [2021-06-10 14:52:33,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:33,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:33,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368046273] [2021-06-10 14:52:33,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:33,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:33,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:33,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:33,180 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:33,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 389 transitions, 15652 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:33,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:33,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:33,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:33,837 INFO L129 PetriNetUnfolder]: 57/2797 cut-off events. [2021-06-10 14:52:33,837 INFO L130 PetriNetUnfolder]: For 95206/96284 co-relation queries the response was YES. [2021-06-10 14:52:33,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18564 conditions, 2797 events. 57/2797 cut-off events. For 95206/96284 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 41395 event pairs, 57 based on Foata normal form. 29/2734 useless extension candidates. Maximal degree in co-relation 18445. Up to 389 conditions per place. [2021-06-10 14:52:33,859 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 237 selfloop transitions, 136 changer transitions 2/393 dead transitions. [2021-06-10 14:52:33,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 393 transitions, 16418 flow [2021-06-10 14:52:33,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:33,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:33,860 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:33,860 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:33,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:33,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:33,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:33,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:33,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:33,861 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:33,861 INFO L185 Difference]: Start difference. First operand has 391 places, 389 transitions, 15652 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:33,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 393 transitions, 16418 flow [2021-06-10 14:52:34,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 393 transitions, 16162 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:34,443 INFO L241 Difference]: Finished difference. Result has 393 places, 387 transitions, 15574 flow [2021-06-10 14:52:34,443 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15404, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15574, PETRI_PLACES=393, PETRI_TRANSITIONS=387} [2021-06-10 14:52:34,443 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 349 predicate places. [2021-06-10 14:52:34,443 INFO L480 AbstractCegarLoop]: Abstraction has has 393 places, 387 transitions, 15574 flow [2021-06-10 14:52:34,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:34,443 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:34,443 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:34,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-10 14:52:34,443 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:34,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2132411789, now seen corresponding path program 82 times [2021-06-10 14:52:34,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:34,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988067977] [2021-06-10 14:52:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:34,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:34,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:34,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:34,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:34,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:34,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:34,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:34,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:34,470 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:34,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:34,483 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:34,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:34,499 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:34,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:34,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988067977] [2021-06-10 14:52:34,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:34,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:34,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077493839] [2021-06-10 14:52:34,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:34,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:34,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:34,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:34,517 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:34,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 387 transitions, 15574 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:34,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:34,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:34,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:35,177 INFO L129 PetriNetUnfolder]: 57/2787 cut-off events. [2021-06-10 14:52:35,178 INFO L130 PetriNetUnfolder]: For 94523/95601 co-relation queries the response was YES. [2021-06-10 14:52:35,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18564 conditions, 2787 events. 57/2787 cut-off events. For 94523/95601 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 41258 event pairs, 57 based on Foata normal form. 29/2724 useless extension candidates. Maximal degree in co-relation 18446. Up to 389 conditions per place. [2021-06-10 14:52:35,200 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 242 selfloop transitions, 129 changer transitions 2/391 dead transitions. [2021-06-10 14:52:35,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 391 transitions, 16336 flow [2021-06-10 14:52:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:35,201 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:35,201 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:35,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:35,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:35,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:35,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:35,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:35,202 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:35,202 INFO L185 Difference]: Start difference. First operand has 393 places, 387 transitions, 15574 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:35,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 391 transitions, 16336 flow [2021-06-10 14:52:35,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 391 transitions, 16194 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-06-10 14:52:35,762 INFO L241 Difference]: Finished difference. Result has 397 places, 385 transitions, 15597 flow [2021-06-10 14:52:35,763 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15440, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15597, PETRI_PLACES=397, PETRI_TRANSITIONS=385} [2021-06-10 14:52:35,763 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 353 predicate places. [2021-06-10 14:52:35,763 INFO L480 AbstractCegarLoop]: Abstraction has has 397 places, 385 transitions, 15597 flow [2021-06-10 14:52:35,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:35,763 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:35,763 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:35,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-10 14:52:35,763 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:35,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1138360329, now seen corresponding path program 83 times [2021-06-10 14:52:35,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:35,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314610092] [2021-06-10 14:52:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:35,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:35,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:35,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:35,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:35,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:35,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:35,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:35,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:35,791 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:35,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:35,804 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:35,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:35,821 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:35,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:35,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314610092] [2021-06-10 14:52:35,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:35,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:35,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176679869] [2021-06-10 14:52:35,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:35,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:35,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:35,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:35,838 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:35,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 385 transitions, 15597 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:35,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:35,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:35,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:36,536 INFO L129 PetriNetUnfolder]: 57/2777 cut-off events. [2021-06-10 14:52:36,536 INFO L130 PetriNetUnfolder]: For 94881/95963 co-relation queries the response was YES. [2021-06-10 14:52:36,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18700 conditions, 2777 events. 57/2777 cut-off events. For 94881/95963 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 41117 event pairs, 57 based on Foata normal form. 31/2716 useless extension candidates. Maximal degree in co-relation 18582. Up to 389 conditions per place. [2021-06-10 14:52:36,554 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 233 selfloop transitions, 135 changer transitions 3/389 dead transitions. [2021-06-10 14:52:36,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 389 transitions, 16355 flow [2021-06-10 14:52:36,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:36,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:36,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:36,555 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:36,555 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:36,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:36,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:36,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:36,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:36,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:36,556 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:36,556 INFO L185 Difference]: Start difference. First operand has 397 places, 385 transitions, 15597 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:36,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 389 transitions, 16355 flow [2021-06-10 14:52:37,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 389 transitions, 16090 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:37,084 INFO L241 Difference]: Finished difference. Result has 399 places, 382 transitions, 15467 flow [2021-06-10 14:52:37,084 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15340, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15467, PETRI_PLACES=399, PETRI_TRANSITIONS=382} [2021-06-10 14:52:37,084 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 355 predicate places. [2021-06-10 14:52:37,084 INFO L480 AbstractCegarLoop]: Abstraction has has 399 places, 382 transitions, 15467 flow [2021-06-10 14:52:37,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:37,084 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:37,084 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:37,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-10 14:52:37,084 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:37,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:37,085 INFO L82 PathProgramCache]: Analyzing trace with hash -127914919, now seen corresponding path program 84 times [2021-06-10 14:52:37,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:37,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939661193] [2021-06-10 14:52:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:37,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:37,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:37,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:37,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:37,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:37,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:37,105 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:37,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:37,115 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:37,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:37,128 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:37,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:37,146 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:37,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:37,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939661193] [2021-06-10 14:52:37,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:37,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:37,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696644554] [2021-06-10 14:52:37,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:37,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:37,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:37,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:37,164 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:37,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 382 transitions, 15467 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:37,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:37,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:37,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:37,817 INFO L129 PetriNetUnfolder]: 57/2765 cut-off events. [2021-06-10 14:52:37,818 INFO L130 PetriNetUnfolder]: For 94296/95363 co-relation queries the response was YES. [2021-06-10 14:52:37,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18622 conditions, 2765 events. 57/2765 cut-off events. For 94296/95363 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 40829 event pairs, 49 based on Foata normal form. 22/2695 useless extension candidates. Maximal degree in co-relation 18504. Up to 370 conditions per place. [2021-06-10 14:52:37,838 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 224 selfloop transitions, 147 changer transitions 2/391 dead transitions. [2021-06-10 14:52:37,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 391 transitions, 16456 flow [2021-06-10 14:52:37,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:37,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:37,839 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:37,839 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:37,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:37,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:37,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:37,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:37,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:37,840 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:37,840 INFO L185 Difference]: Start difference. First operand has 399 places, 382 transitions, 15467 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:37,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 391 transitions, 16456 flow [2021-06-10 14:52:38,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 391 transitions, 16070 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-06-10 14:52:38,416 INFO L241 Difference]: Finished difference. Result has 400 places, 383 transitions, 15504 flow [2021-06-10 14:52:38,416 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15089, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15504, PETRI_PLACES=400, PETRI_TRANSITIONS=383} [2021-06-10 14:52:38,416 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 356 predicate places. [2021-06-10 14:52:38,416 INFO L480 AbstractCegarLoop]: Abstraction has has 400 places, 383 transitions, 15504 flow [2021-06-10 14:52:38,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:38,416 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:38,416 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:38,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-10 14:52:38,417 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:38,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1944706391, now seen corresponding path program 85 times [2021-06-10 14:52:38,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:38,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867137456] [2021-06-10 14:52:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:38,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:38,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:38,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:38,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:38,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:38,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:38,436 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:38,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:38,454 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:38,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:38,468 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:38,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:38,486 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:38,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:38,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:38,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867137456] [2021-06-10 14:52:38,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:38,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:38,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513367254] [2021-06-10 14:52:38,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:38,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:38,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:38,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:38,504 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:38,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 383 transitions, 15504 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:38,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:38,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:38,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:39,163 INFO L129 PetriNetUnfolder]: 57/2757 cut-off events. [2021-06-10 14:52:39,163 INFO L130 PetriNetUnfolder]: For 94366/95462 co-relation queries the response was YES. [2021-06-10 14:52:39,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18416 conditions, 2757 events. 57/2757 cut-off events. For 94366/95462 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 40674 event pairs, 49 based on Foata normal form. 20/2684 useless extension candidates. Maximal degree in co-relation 18297. Up to 375 conditions per place. [2021-06-10 14:52:39,184 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 249 selfloop transitions, 135 changer transitions 2/404 dead transitions. [2021-06-10 14:52:39,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 404 transitions, 16991 flow [2021-06-10 14:52:39,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:39,185 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:39,185 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:39,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:39,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:39,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:39,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:39,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:39,186 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:39,186 INFO L185 Difference]: Start difference. First operand has 400 places, 383 transitions, 15504 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:39,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 404 transitions, 16991 flow [2021-06-10 14:52:39,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 404 transitions, 16816 flow, removed 27 selfloop flow, removed 3 redundant places. [2021-06-10 14:52:39,800 INFO L241 Difference]: Finished difference. Result has 405 places, 391 transitions, 16035 flow [2021-06-10 14:52:39,800 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15354, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16035, PETRI_PLACES=405, PETRI_TRANSITIONS=391} [2021-06-10 14:52:39,800 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 361 predicate places. [2021-06-10 14:52:39,800 INFO L480 AbstractCegarLoop]: Abstraction has has 405 places, 391 transitions, 16035 flow [2021-06-10 14:52:39,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:39,801 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:39,801 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:39,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-10 14:52:39,801 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:39,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:39,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1384044961, now seen corresponding path program 86 times [2021-06-10 14:52:39,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:39,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83145981] [2021-06-10 14:52:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:39,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:39,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:39,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:39,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:39,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:39,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:39,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:39,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:39,832 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:39,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:39,845 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:39,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:39,864 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:39,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:39,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83145981] [2021-06-10 14:52:39,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:39,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:39,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557896847] [2021-06-10 14:52:39,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:39,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:39,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:39,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:39,882 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:39,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 391 transitions, 16035 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:39,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:39,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:39,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:40,553 INFO L129 PetriNetUnfolder]: 57/2746 cut-off events. [2021-06-10 14:52:40,554 INFO L130 PetriNetUnfolder]: For 96258/97357 co-relation queries the response was YES. [2021-06-10 14:52:40,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18568 conditions, 2746 events. 57/2746 cut-off events. For 96258/97357 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 40506 event pairs, 49 based on Foata normal form. 20/2674 useless extension candidates. Maximal degree in co-relation 18448. Up to 370 conditions per place. [2021-06-10 14:52:40,574 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 233 selfloop transitions, 144 changer transitions 2/397 dead transitions. [2021-06-10 14:52:40,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 397 transitions, 16892 flow [2021-06-10 14:52:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:40,575 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:40,575 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:40,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:40,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:40,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:40,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:40,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:40,576 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:40,576 INFO L185 Difference]: Start difference. First operand has 405 places, 391 transitions, 16035 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:40,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 397 transitions, 16892 flow [2021-06-10 14:52:41,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 397 transitions, 16665 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:41,141 INFO L241 Difference]: Finished difference. Result has 409 places, 390 transitions, 16105 flow [2021-06-10 14:52:41,142 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15820, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16105, PETRI_PLACES=409, PETRI_TRANSITIONS=390} [2021-06-10 14:52:41,142 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 365 predicate places. [2021-06-10 14:52:41,142 INFO L480 AbstractCegarLoop]: Abstraction has has 409 places, 390 transitions, 16105 flow [2021-06-10 14:52:41,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:41,142 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:41,142 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:41,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-10 14:52:41,142 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:41,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:41,142 INFO L82 PathProgramCache]: Analyzing trace with hash -252695395, now seen corresponding path program 87 times [2021-06-10 14:52:41,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:41,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777923413] [2021-06-10 14:52:41,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:41,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:41,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:41,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:41,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:41,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:41,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:41,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:41,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:41,171 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:41,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:41,183 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:41,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:41,199 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:41,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:41,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777923413] [2021-06-10 14:52:41,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:41,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:41,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910247699] [2021-06-10 14:52:41,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:41,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:41,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:41,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:41,218 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:41,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 390 transitions, 16105 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:41,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:41,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:41,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:41,888 INFO L129 PetriNetUnfolder]: 57/2737 cut-off events. [2021-06-10 14:52:41,888 INFO L130 PetriNetUnfolder]: For 96291/97391 co-relation queries the response was YES. [2021-06-10 14:52:41,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18600 conditions, 2737 events. 57/2737 cut-off events. For 96291/97391 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 40393 event pairs, 49 based on Foata normal form. 22/2666 useless extension candidates. Maximal degree in co-relation 18479. Up to 375 conditions per place. [2021-06-10 14:52:41,909 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 236 selfloop transitions, 145 changer transitions 2/401 dead transitions. [2021-06-10 14:52:41,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 401 transitions, 17143 flow [2021-06-10 14:52:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:41,910 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:41,910 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:41,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:41,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:41,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:41,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:41,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:41,911 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:41,911 INFO L185 Difference]: Start difference. First operand has 409 places, 390 transitions, 16105 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:41,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 401 transitions, 17143 flow [2021-06-10 14:52:42,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 401 transitions, 16952 flow, removed 22 selfloop flow, removed 6 redundant places. [2021-06-10 14:52:42,493 INFO L241 Difference]: Finished difference. Result has 411 places, 391 transitions, 16311 flow [2021-06-10 14:52:42,493 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15929, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16311, PETRI_PLACES=411, PETRI_TRANSITIONS=391} [2021-06-10 14:52:42,493 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 367 predicate places. [2021-06-10 14:52:42,493 INFO L480 AbstractCegarLoop]: Abstraction has has 411 places, 391 transitions, 16311 flow [2021-06-10 14:52:42,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:42,493 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:42,493 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:42,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-10 14:52:42,493 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:42,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:42,494 INFO L82 PathProgramCache]: Analyzing trace with hash -677788157, now seen corresponding path program 88 times [2021-06-10 14:52:42,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:42,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152543938] [2021-06-10 14:52:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:42,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:42,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:42,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:42,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:42,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:42,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:42,519 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:42,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:42,528 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:42,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:42,542 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:42,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:42,561 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:42,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:42,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152543938] [2021-06-10 14:52:42,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:42,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:42,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290185598] [2021-06-10 14:52:42,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:42,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:42,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:42,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:42,580 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:42,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 391 transitions, 16311 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:42,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:42,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:42,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:43,293 INFO L129 PetriNetUnfolder]: 49/2881 cut-off events. [2021-06-10 14:52:43,293 INFO L130 PetriNetUnfolder]: For 101914/103025 co-relation queries the response was YES. [2021-06-10 14:52:43,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19597 conditions, 2881 events. 49/2881 cut-off events. For 101914/103025 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 43058 event pairs, 49 based on Foata normal form. 22/2808 useless extension candidates. Maximal degree in co-relation 19478. Up to 394 conditions per place. [2021-06-10 14:52:43,312 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 266 selfloop transitions, 134 changer transitions 2/420 dead transitions. [2021-06-10 14:52:43,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 420 transitions, 18253 flow [2021-06-10 14:52:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:43,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:43,313 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:43,313 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:43,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:43,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:43,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:43,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:43,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:43,314 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:43,314 INFO L185 Difference]: Start difference. First operand has 411 places, 391 transitions, 16311 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:43,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 420 transitions, 18253 flow [2021-06-10 14:52:43,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 420 transitions, 18011 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:43,911 INFO L241 Difference]: Finished difference. Result has 418 places, 401 transitions, 17016 flow [2021-06-10 14:52:43,911 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16087, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17016, PETRI_PLACES=418, PETRI_TRANSITIONS=401} [2021-06-10 14:52:43,911 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 374 predicate places. [2021-06-10 14:52:43,911 INFO L480 AbstractCegarLoop]: Abstraction has has 418 places, 401 transitions, 17016 flow [2021-06-10 14:52:43,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:43,911 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:43,911 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:43,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-10 14:52:43,912 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:43,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:43,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1705735509, now seen corresponding path program 89 times [2021-06-10 14:52:43,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:43,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588766677] [2021-06-10 14:52:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:43,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:43,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:43,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:43,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:43,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:43,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:43,931 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:43,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:43,943 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:43,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:43,956 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:43,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:43,978 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:43,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:43,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588766677] [2021-06-10 14:52:43,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:43,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:43,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885959985] [2021-06-10 14:52:43,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:43,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:43,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:43,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:43,996 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:43,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 401 transitions, 17016 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:43,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:43,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:43,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:44,707 INFO L129 PetriNetUnfolder]: 49/2871 cut-off events. [2021-06-10 14:52:44,708 INFO L130 PetriNetUnfolder]: For 105586/106867 co-relation queries the response was YES. [2021-06-10 14:52:44,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19732 conditions, 2871 events. 49/2871 cut-off events. For 105586/106867 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 42839 event pairs, 49 based on Foata normal form. 22/2798 useless extension candidates. Maximal degree in co-relation 19609. Up to 385 conditions per place. [2021-06-10 14:52:44,732 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 269 selfloop transitions, 133 changer transitions 2/422 dead transitions. [2021-06-10 14:52:44,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 422 transitions, 18507 flow [2021-06-10 14:52:44,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:44,733 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:44,733 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:44,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:44,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:44,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:44,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:44,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:44,737 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:44,737 INFO L185 Difference]: Start difference. First operand has 418 places, 401 transitions, 17016 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:44,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 422 transitions, 18507 flow [2021-06-10 14:52:45,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 422 transitions, 18362 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:45,400 INFO L241 Difference]: Finished difference. Result has 422 places, 403 transitions, 17276 flow [2021-06-10 14:52:45,400 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16883, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17276, PETRI_PLACES=422, PETRI_TRANSITIONS=403} [2021-06-10 14:52:45,400 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 378 predicate places. [2021-06-10 14:52:45,400 INFO L480 AbstractCegarLoop]: Abstraction has has 422 places, 403 transitions, 17276 flow [2021-06-10 14:52:45,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:45,400 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:45,400 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:45,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-10 14:52:45,401 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:45,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:45,401 INFO L82 PathProgramCache]: Analyzing trace with hash 733526065, now seen corresponding path program 90 times [2021-06-10 14:52:45,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:45,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90655845] [2021-06-10 14:52:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:45,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:45,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:45,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:45,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:45,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:45,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:45,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:45,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:45,441 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:45,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:45,455 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:45,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:45,473 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:45,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:45,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90655845] [2021-06-10 14:52:45,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:45,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:45,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4478782] [2021-06-10 14:52:45,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:45,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:45,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:45,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:45,491 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:45,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 403 transitions, 17276 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:45,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:45,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:45,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:46,254 INFO L129 PetriNetUnfolder]: 49/2861 cut-off events. [2021-06-10 14:52:46,254 INFO L130 PetriNetUnfolder]: For 108811/110079 co-relation queries the response was YES. [2021-06-10 14:52:46,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19959 conditions, 2861 events. 49/2861 cut-off events. For 108811/110079 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 42675 event pairs, 49 based on Foata normal form. 22/2788 useless extension candidates. Maximal degree in co-relation 19836. Up to 375 conditions per place. [2021-06-10 14:52:46,270 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 249 selfloop transitions, 139 changer transitions 1/407 dead transitions. [2021-06-10 14:52:46,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 407 transitions, 18070 flow [2021-06-10 14:52:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:46,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:46,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:46,271 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:46,271 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:46,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:46,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:46,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:46,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:46,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:46,272 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:46,272 INFO L185 Difference]: Start difference. First operand has 422 places, 403 transitions, 17276 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:46,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 407 transitions, 18070 flow [2021-06-10 14:52:46,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 407 transitions, 17858 flow, removed 19 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:46,892 INFO L241 Difference]: Finished difference. Result has 424 places, 402 transitions, 17292 flow [2021-06-10 14:52:46,892 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17072, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17292, PETRI_PLACES=424, PETRI_TRANSITIONS=402} [2021-06-10 14:52:46,893 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 380 predicate places. [2021-06-10 14:52:46,893 INFO L480 AbstractCegarLoop]: Abstraction has has 424 places, 402 transitions, 17292 flow [2021-06-10 14:52:46,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:46,893 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:46,893 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:46,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-10 14:52:46,893 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:46,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:46,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1750237181, now seen corresponding path program 91 times [2021-06-10 14:52:46,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:46,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197397292] [2021-06-10 14:52:46,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:46,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:46,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:46,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:46,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:46,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:46,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:46,914 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:46,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:46,923 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:46,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:46,937 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:46,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:46,955 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:46,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:46,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197397292] [2021-06-10 14:52:46,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:46,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:46,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462716533] [2021-06-10 14:52:46,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:46,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:46,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:46,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:46,972 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:46,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 402 transitions, 17292 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:46,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:46,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:46,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:47,695 INFO L129 PetriNetUnfolder]: 49/2854 cut-off events. [2021-06-10 14:52:47,696 INFO L130 PetriNetUnfolder]: For 107363/108627 co-relation queries the response was YES. [2021-06-10 14:52:47,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20092 conditions, 2854 events. 49/2854 cut-off events. For 107363/108627 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 42506 event pairs, 49 based on Foata normal form. 20/2779 useless extension candidates. Maximal degree in co-relation 19971. Up to 375 conditions per place. [2021-06-10 14:52:47,716 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 247 selfloop transitions, 139 changer transitions 2/406 dead transitions. [2021-06-10 14:52:47,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 406 transitions, 18084 flow [2021-06-10 14:52:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:47,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:47,717 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:47,717 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:47,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:47,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:47,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:47,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:47,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:47,718 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:47,718 INFO L185 Difference]: Start difference. First operand has 424 places, 402 transitions, 17292 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:47,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 406 transitions, 18084 flow [2021-06-10 14:52:48,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 406 transitions, 17936 flow, removed 18 selfloop flow, removed 3 redundant places. [2021-06-10 14:52:48,386 INFO L241 Difference]: Finished difference. Result has 428 places, 400 transitions, 17319 flow [2021-06-10 14:52:48,386 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17152, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17319, PETRI_PLACES=428, PETRI_TRANSITIONS=400} [2021-06-10 14:52:48,387 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 384 predicate places. [2021-06-10 14:52:48,387 INFO L480 AbstractCegarLoop]: Abstraction has has 428 places, 400 transitions, 17319 flow [2021-06-10 14:52:48,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:48,387 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:48,387 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:48,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-10 14:52:48,387 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:48,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:48,387 INFO L82 PathProgramCache]: Analyzing trace with hash 231200487, now seen corresponding path program 92 times [2021-06-10 14:52:48,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:48,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911094503] [2021-06-10 14:52:48,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:48,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:48,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:48,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:48,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:48,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:48,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:48,406 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:48,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:48,416 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:48,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:48,438 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:48,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:48,456 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:48,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:48,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911094503] [2021-06-10 14:52:48,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:48,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:48,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083191125] [2021-06-10 14:52:48,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:48,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:48,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:48,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:48,475 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:48,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 400 transitions, 17319 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:48,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:48,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:48,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:49,183 INFO L129 PetriNetUnfolder]: 49/2845 cut-off events. [2021-06-10 14:52:49,184 INFO L130 PetriNetUnfolder]: For 107428/108698 co-relation queries the response was YES. [2021-06-10 14:52:49,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20223 conditions, 2845 events. 49/2845 cut-off events. For 107428/108698 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 42369 event pairs, 49 based on Foata normal form. 20/2771 useless extension candidates. Maximal degree in co-relation 20102. Up to 385 conditions per place. [2021-06-10 14:52:49,204 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 261 selfloop transitions, 136 changer transitions 2/417 dead transitions. [2021-06-10 14:52:49,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 417 transitions, 18688 flow [2021-06-10 14:52:49,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:49,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:49,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:49,205 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:49,205 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:49,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:49,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:49,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:49,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:49,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:49,206 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:49,206 INFO L185 Difference]: Start difference. First operand has 428 places, 400 transitions, 17319 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:49,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 417 transitions, 18688 flow [2021-06-10 14:52:49,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 417 transitions, 18471 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:49,908 INFO L241 Difference]: Finished difference. Result has 433 places, 407 transitions, 17759 flow [2021-06-10 14:52:49,909 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17116, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17759, PETRI_PLACES=433, PETRI_TRANSITIONS=407} [2021-06-10 14:52:49,909 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 389 predicate places. [2021-06-10 14:52:49,909 INFO L480 AbstractCegarLoop]: Abstraction has has 433 places, 407 transitions, 17759 flow [2021-06-10 14:52:49,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:49,909 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:49,909 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:49,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-10 14:52:49,909 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:49,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1478326997, now seen corresponding path program 93 times [2021-06-10 14:52:49,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:49,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427778139] [2021-06-10 14:52:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:49,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:49,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:49,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:49,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:49,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:49,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:49,927 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:49,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:49,936 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:49,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:49,949 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:49,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:49,967 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:49,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:49,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427778139] [2021-06-10 14:52:49,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:49,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:49,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158081616] [2021-06-10 14:52:49,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:49,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:49,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:49,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:49,985 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:49,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 407 transitions, 17759 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:49,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:49,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:49,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:50,704 INFO L129 PetriNetUnfolder]: 49/2836 cut-off events. [2021-06-10 14:52:50,705 INFO L130 PetriNetUnfolder]: For 108795/110071 co-relation queries the response was YES. [2021-06-10 14:52:50,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20270 conditions, 2836 events. 49/2836 cut-off events. For 108795/110071 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 42212 event pairs, 49 based on Foata normal form. 22/2765 useless extension candidates. Maximal degree in co-relation 20147. Up to 385 conditions per place. [2021-06-10 14:52:50,725 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 264 selfloop transitions, 131 changer transitions 2/415 dead transitions. [2021-06-10 14:52:50,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 415 transitions, 18735 flow [2021-06-10 14:52:50,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:50,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:50,726 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:50,726 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:50,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:50,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:50,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:50,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:50,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:50,727 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:50,727 INFO L185 Difference]: Start difference. First operand has 433 places, 407 transitions, 17759 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:50,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 415 transitions, 18735 flow [2021-06-10 14:52:51,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 415 transitions, 18523 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:51,416 INFO L241 Difference]: Finished difference. Result has 437 places, 409 transitions, 17932 flow [2021-06-10 14:52:51,416 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17555, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17932, PETRI_PLACES=437, PETRI_TRANSITIONS=409} [2021-06-10 14:52:51,416 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 393 predicate places. [2021-06-10 14:52:51,416 INFO L480 AbstractCegarLoop]: Abstraction has has 437 places, 409 transitions, 17932 flow [2021-06-10 14:52:51,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:51,416 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:51,416 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:51,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-10 14:52:51,417 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:51,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:51,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1328544723, now seen corresponding path program 94 times [2021-06-10 14:52:51,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:51,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137790904] [2021-06-10 14:52:51,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:51,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:51,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:51,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:51,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:51,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:51,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:51,434 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:51,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:51,444 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:51,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:51,457 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:51,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:51,475 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:51,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:51,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137790904] [2021-06-10 14:52:51,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:51,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:51,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225139443] [2021-06-10 14:52:51,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:51,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:51,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:51,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:51,493 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:51,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 409 transitions, 17932 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:51,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:51,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:51,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:52,223 INFO L129 PetriNetUnfolder]: 49/2826 cut-off events. [2021-06-10 14:52:52,224 INFO L130 PetriNetUnfolder]: For 109633/110899 co-relation queries the response was YES. [2021-06-10 14:52:52,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20299 conditions, 2826 events. 49/2826 cut-off events. For 109633/110899 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 42044 event pairs, 49 based on Foata normal form. 22/2755 useless extension candidates. Maximal degree in co-relation 20175. Up to 385 conditions per place. [2021-06-10 14:52:52,245 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 260 selfloop transitions, 133 changer transitions 2/413 dead transitions. [2021-06-10 14:52:52,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 413 transitions, 18738 flow [2021-06-10 14:52:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:52,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:52,246 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:52,246 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:52,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:52,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:52,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:52,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:52,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:52,247 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:52,247 INFO L185 Difference]: Start difference. First operand has 437 places, 409 transitions, 17932 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:52,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 413 transitions, 18738 flow [2021-06-10 14:52:52,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 413 transitions, 18528 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-06-10 14:52:52,969 INFO L241 Difference]: Finished difference. Result has 440 places, 407 transitions, 17899 flow [2021-06-10 14:52:52,969 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17730, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17899, PETRI_PLACES=440, PETRI_TRANSITIONS=407} [2021-06-10 14:52:52,969 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 396 predicate places. [2021-06-10 14:52:52,969 INFO L480 AbstractCegarLoop]: Abstraction has has 440 places, 407 transitions, 17899 flow [2021-06-10 14:52:52,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:52,969 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:52,969 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:52,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-10 14:52:52,969 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:52,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:52,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1739422957, now seen corresponding path program 95 times [2021-06-10 14:52:52,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:52,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818509104] [2021-06-10 14:52:52,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:52,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:52,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:52,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:52,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:52,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:52,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:52,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:52,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:52,997 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:52,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:53,011 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:52:53,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:52:53,032 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:53,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:53,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818509104] [2021-06-10 14:52:53,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:53,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:53,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192915339] [2021-06-10 14:52:53,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:53,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:53,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:53,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:53,050 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:53,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 407 transitions, 17899 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:53,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:53,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:53,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:53,791 INFO L129 PetriNetUnfolder]: 49/2814 cut-off events. [2021-06-10 14:52:53,791 INFO L130 PetriNetUnfolder]: For 109130/110398 co-relation queries the response was YES. [2021-06-10 14:52:53,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20282 conditions, 2814 events. 49/2814 cut-off events. For 109130/110398 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 41836 event pairs, 49 based on Foata normal form. 22/2743 useless extension candidates. Maximal degree in co-relation 20158. Up to 375 conditions per place. [2021-06-10 14:52:53,816 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 239 selfloop transitions, 152 changer transitions 2/411 dead transitions. [2021-06-10 14:52:53,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 411 transitions, 18701 flow [2021-06-10 14:52:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:53,817 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:53,817 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:53,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:53,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:53,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:53,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:53,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:53,820 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:53,820 INFO L185 Difference]: Start difference. First operand has 440 places, 407 transitions, 17899 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:53,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 411 transitions, 18701 flow [2021-06-10 14:52:54,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 411 transitions, 18436 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:54,522 INFO L241 Difference]: Finished difference. Result has 442 places, 405 transitions, 17816 flow [2021-06-10 14:52:54,522 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17642, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17816, PETRI_PLACES=442, PETRI_TRANSITIONS=405} [2021-06-10 14:52:54,522 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 398 predicate places. [2021-06-10 14:52:54,522 INFO L480 AbstractCegarLoop]: Abstraction has has 442 places, 405 transitions, 17816 flow [2021-06-10 14:52:54,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:54,522 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:54,522 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:54,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-10 14:52:54,522 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:54,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:54,523 INFO L82 PathProgramCache]: Analyzing trace with hash -772604679, now seen corresponding path program 96 times [2021-06-10 14:52:54,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:54,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198767848] [2021-06-10 14:52:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:54,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:54,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:54,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:54,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:54,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:54,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:54,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:54,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:54,550 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:52:54,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:52:54,573 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:52:54,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:52:54,597 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:54,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:54,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198767848] [2021-06-10 14:52:54,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:54,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:54,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885652664] [2021-06-10 14:52:54,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:54,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:54,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:54,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:54,616 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:54,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 405 transitions, 17816 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:54,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:54,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:54,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:55,336 INFO L129 PetriNetUnfolder]: 49/2806 cut-off events. [2021-06-10 14:52:55,336 INFO L130 PetriNetUnfolder]: For 108228/109492 co-relation queries the response was YES. [2021-06-10 14:52:55,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20219 conditions, 2806 events. 49/2806 cut-off events. For 108228/109492 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 41660 event pairs, 49 based on Foata normal form. 20/2733 useless extension candidates. Maximal degree in co-relation 20095. Up to 375 conditions per place. [2021-06-10 14:52:55,359 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 237 selfloop transitions, 153 changer transitions 1/409 dead transitions. [2021-06-10 14:52:55,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 409 transitions, 18614 flow [2021-06-10 14:52:55,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:55,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:55,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:55,361 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:55,361 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:55,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:55,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:55,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:55,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:55,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:55,363 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:55,363 INFO L185 Difference]: Start difference. First operand has 442 places, 405 transitions, 17816 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:55,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 409 transitions, 18614 flow [2021-06-10 14:52:56,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 409 transitions, 18404 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:56,060 INFO L241 Difference]: Finished difference. Result has 444 places, 404 transitions, 17846 flow [2021-06-10 14:52:56,061 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17614, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17846, PETRI_PLACES=444, PETRI_TRANSITIONS=404} [2021-06-10 14:52:56,061 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 400 predicate places. [2021-06-10 14:52:56,061 INFO L480 AbstractCegarLoop]: Abstraction has has 444 places, 404 transitions, 17846 flow [2021-06-10 14:52:56,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:56,061 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:56,061 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:56,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-10 14:52:56,061 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:56,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:56,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1723809989, now seen corresponding path program 97 times [2021-06-10 14:52:56,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:56,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844701836] [2021-06-10 14:52:56,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:56,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:56,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:56,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:56,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:56,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:56,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:56,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:56,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:56,089 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:52:56,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:52:56,112 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:56,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:56,130 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:56,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:56,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844701836] [2021-06-10 14:52:56,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:56,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:56,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614961606] [2021-06-10 14:52:56,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:56,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:56,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:56,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:56,149 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:56,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 404 transitions, 17846 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:56,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:56,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:56,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:56,890 INFO L129 PetriNetUnfolder]: 49/2802 cut-off events. [2021-06-10 14:52:56,890 INFO L130 PetriNetUnfolder]: For 108246/109516 co-relation queries the response was YES. [2021-06-10 14:52:56,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20319 conditions, 2802 events. 49/2802 cut-off events. For 108246/109516 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 41576 event pairs, 49 based on Foata normal form. 20/2729 useless extension candidates. Maximal degree in co-relation 20196. Up to 375 conditions per place. [2021-06-10 14:52:56,908 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 239 selfloop transitions, 149 changer transitions 2/408 dead transitions. [2021-06-10 14:52:56,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 408 transitions, 18642 flow [2021-06-10 14:52:56,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:56,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:56,910 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:56,910 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:56,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:56,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:56,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:56,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:56,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:56,910 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:56,910 INFO L185 Difference]: Start difference. First operand has 444 places, 404 transitions, 17846 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:56,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 408 transitions, 18642 flow [2021-06-10 14:52:57,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 408 transitions, 18362 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:57,571 INFO L241 Difference]: Finished difference. Result has 446 places, 402 transitions, 17755 flow [2021-06-10 14:52:57,572 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17574, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17755, PETRI_PLACES=446, PETRI_TRANSITIONS=402} [2021-06-10 14:52:57,572 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 402 predicate places. [2021-06-10 14:52:57,572 INFO L480 AbstractCegarLoop]: Abstraction has has 446 places, 402 transitions, 17755 flow [2021-06-10 14:52:57,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:57,572 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:57,572 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:57,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-10 14:52:57,572 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:57,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:57,573 INFO L82 PathProgramCache]: Analyzing trace with hash -2142105563, now seen corresponding path program 98 times [2021-06-10 14:52:57,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:57,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918904509] [2021-06-10 14:52:57,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:57,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:57,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:57,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:57,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:57,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:57,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:57,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:57,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:52:57,599 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:52:57,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:52:57,613 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:57,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:57,631 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:57,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:57,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918904509] [2021-06-10 14:52:57,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:57,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:57,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709962604] [2021-06-10 14:52:57,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:57,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:57,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:57,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:57,651 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:57,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 402 transitions, 17755 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:57,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:57,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:57,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:58,364 INFO L129 PetriNetUnfolder]: 49/2784 cut-off events. [2021-06-10 14:52:58,365 INFO L130 PetriNetUnfolder]: For 106371/107647 co-relation queries the response was YES. [2021-06-10 14:52:58,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20237 conditions, 2784 events. 49/2784 cut-off events. For 106371/107647 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 41324 event pairs, 49 based on Foata normal form. 22/2713 useless extension candidates. Maximal degree in co-relation 20115. Up to 375 conditions per place. [2021-06-10 14:52:58,385 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 242 selfloop transitions, 144 changer transitions 2/406 dead transitions. [2021-06-10 14:52:58,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 406 transitions, 18547 flow [2021-06-10 14:52:58,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:58,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:58,386 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:58,386 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:58,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:58,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:58,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:58,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:58,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:58,387 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:58,387 INFO L185 Difference]: Start difference. First operand has 446 places, 402 transitions, 17755 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:58,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 406 transitions, 18547 flow [2021-06-10 14:52:59,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 406 transitions, 18257 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:52:59,061 INFO L241 Difference]: Finished difference. Result has 448 places, 400 transitions, 17641 flow [2021-06-10 14:52:59,061 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17473, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17641, PETRI_PLACES=448, PETRI_TRANSITIONS=400} [2021-06-10 14:52:59,061 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 404 predicate places. [2021-06-10 14:52:59,061 INFO L480 AbstractCegarLoop]: Abstraction has has 448 places, 400 transitions, 17641 flow [2021-06-10 14:52:59,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:59,061 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:52:59,061 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:52:59,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-10 14:52:59,061 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:52:59,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:52:59,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1503395097, now seen corresponding path program 99 times [2021-06-10 14:52:59,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:52:59,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939485710] [2021-06-10 14:52:59,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:52:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:52:59,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:59,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:52:59,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:59,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:52:59,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:52:59,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:52:59,080 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:52:59,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:52:59,089 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:52:59,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:52:59,103 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:52:59,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:52:59,121 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:52:59,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:52:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:52:59,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939485710] [2021-06-10 14:52:59,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:52:59,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:52:59,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778414887] [2021-06-10 14:52:59,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:52:59,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:52:59,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:52:59,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:52:59,139 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:52:59,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 400 transitions, 17641 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:59,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:52:59,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:52:59,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:52:59,897 INFO L129 PetriNetUnfolder]: 49/2774 cut-off events. [2021-06-10 14:52:59,897 INFO L130 PetriNetUnfolder]: For 105846/107122 co-relation queries the response was YES. [2021-06-10 14:52:59,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20176 conditions, 2774 events. 49/2774 cut-off events. For 105846/107122 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 41106 event pairs, 49 based on Foata normal form. 22/2703 useless extension candidates. Maximal degree in co-relation 20054. Up to 382 conditions per place. [2021-06-10 14:52:59,912 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 260 selfloop transitions, 124 changer transitions 2/404 dead transitions. [2021-06-10 14:52:59,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 404 transitions, 18429 flow [2021-06-10 14:52:59,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:52:59,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:52:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:52:59,913 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:52:59,913 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:52:59,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:52:59,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:52:59,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:52:59,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:59,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:59,914 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:52:59,914 INFO L185 Difference]: Start difference. First operand has 448 places, 400 transitions, 17641 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:52:59,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 404 transitions, 18429 flow [2021-06-10 14:53:00,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 404 transitions, 18045 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-06-10 14:53:00,544 INFO L241 Difference]: Finished difference. Result has 449 places, 398 transitions, 17397 flow [2021-06-10 14:53:00,545 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17265, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17397, PETRI_PLACES=449, PETRI_TRANSITIONS=398} [2021-06-10 14:53:00,545 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 405 predicate places. [2021-06-10 14:53:00,545 INFO L480 AbstractCegarLoop]: Abstraction has has 449 places, 398 transitions, 17397 flow [2021-06-10 14:53:00,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:00,545 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:00,545 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:00,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-10 14:53:00,545 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:00,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:00,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1925532621, now seen corresponding path program 100 times [2021-06-10 14:53:00,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:00,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661206565] [2021-06-10 14:53:00,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:00,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:00,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:00,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:00,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:00,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:00,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:00,566 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:00,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:00,575 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:00,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:00,587 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:00,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:00,604 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:00,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:00,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661206565] [2021-06-10 14:53:00,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:00,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:00,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496718442] [2021-06-10 14:53:00,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:00,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:00,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:00,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:00,621 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:00,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 398 transitions, 17397 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:00,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:00,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:00,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:01,318 INFO L129 PetriNetUnfolder]: 49/2764 cut-off events. [2021-06-10 14:53:01,318 INFO L130 PetriNetUnfolder]: For 104738/106000 co-relation queries the response was YES. [2021-06-10 14:53:01,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19984 conditions, 2764 events. 49/2764 cut-off events. For 104738/106000 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 40926 event pairs, 49 based on Foata normal form. 20/2691 useless extension candidates. Maximal degree in co-relation 19862. Up to 382 conditions per place. [2021-06-10 14:53:01,342 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 256 selfloop transitions, 126 changer transitions 2/402 dead transitions. [2021-06-10 14:53:01,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 402 transitions, 18181 flow [2021-06-10 14:53:01,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:01,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:01,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:01,343 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:01,343 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:01,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:01,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:01,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:01,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:01,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:01,344 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:01,344 INFO L185 Difference]: Start difference. First operand has 449 places, 398 transitions, 17397 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:01,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 402 transitions, 18181 flow [2021-06-10 14:53:02,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 402 transitions, 17932 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:02,033 INFO L241 Difference]: Finished difference. Result has 451 places, 396 transitions, 17293 flow [2021-06-10 14:53:02,033 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17156, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17293, PETRI_PLACES=451, PETRI_TRANSITIONS=396} [2021-06-10 14:53:02,033 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 407 predicate places. [2021-06-10 14:53:02,033 INFO L480 AbstractCegarLoop]: Abstraction has has 451 places, 396 transitions, 17293 flow [2021-06-10 14:53:02,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:02,033 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:02,034 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:02,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-10 14:53:02,034 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:02,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:02,034 INFO L82 PathProgramCache]: Analyzing trace with hash -650531595, now seen corresponding path program 101 times [2021-06-10 14:53:02,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:02,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430737483] [2021-06-10 14:53:02,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:02,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:02,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:02,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:02,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:02,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:02,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:02,052 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:02,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:02,062 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:02,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:02,076 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:02,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:02,093 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:02,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:02,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430737483] [2021-06-10 14:53:02,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:02,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:02,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322236029] [2021-06-10 14:53:02,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:02,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:02,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:02,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:02,112 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:02,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 396 transitions, 17293 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:02,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:02,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:02,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:02,815 INFO L129 PetriNetUnfolder]: 49/2754 cut-off events. [2021-06-10 14:53:02,815 INFO L130 PetriNetUnfolder]: For 104248/105512 co-relation queries the response was YES. [2021-06-10 14:53:02,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19923 conditions, 2754 events. 49/2754 cut-off events. For 104248/105512 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 40731 event pairs, 49 based on Foata normal form. 20/2681 useless extension candidates. Maximal degree in co-relation 19801. Up to 375 conditions per place. [2021-06-10 14:53:02,836 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 239 selfloop transitions, 140 changer transitions 3/400 dead transitions. [2021-06-10 14:53:02,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 400 transitions, 18073 flow [2021-06-10 14:53:02,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:02,837 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:02,837 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:02,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:02,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:02,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:02,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:02,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:02,838 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:02,838 INFO L185 Difference]: Start difference. First operand has 451 places, 396 transitions, 17293 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:02,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 400 transitions, 18073 flow [2021-06-10 14:53:03,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 400 transitions, 17904 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-06-10 14:53:03,563 INFO L241 Difference]: Finished difference. Result has 454 places, 393 transitions, 17244 flow [2021-06-10 14:53:03,564 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17132, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17244, PETRI_PLACES=454, PETRI_TRANSITIONS=393} [2021-06-10 14:53:03,564 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 410 predicate places. [2021-06-10 14:53:03,564 INFO L480 AbstractCegarLoop]: Abstraction has has 454 places, 393 transitions, 17244 flow [2021-06-10 14:53:03,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:03,564 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:03,564 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:03,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-10 14:53:03,564 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:03,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:03,565 INFO L82 PathProgramCache]: Analyzing trace with hash 377416735, now seen corresponding path program 102 times [2021-06-10 14:53:03,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:03,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371452589] [2021-06-10 14:53:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:03,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:03,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:03,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:03,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:03,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:03,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:03,583 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:03,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:03,593 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:53:03,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:53:03,617 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:53:03,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:53:03,635 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:03,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:03,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371452589] [2021-06-10 14:53:03,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:03,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:03,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339629416] [2021-06-10 14:53:03,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:03,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:03,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:03,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:03,653 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:03,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 393 transitions, 17244 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:03,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:03,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:03,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:04,319 INFO L129 PetriNetUnfolder]: 49/2743 cut-off events. [2021-06-10 14:53:04,319 INFO L130 PetriNetUnfolder]: For 104243/105517 co-relation queries the response was YES. [2021-06-10 14:53:04,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19968 conditions, 2743 events. 49/2743 cut-off events. For 104243/105517 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 40530 event pairs, 49 based on Foata normal form. 22/2673 useless extension candidates. Maximal degree in co-relation 19846. Up to 375 conditions per place. [2021-06-10 14:53:04,339 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 244 selfloop transitions, 133 changer transitions 2/397 dead transitions. [2021-06-10 14:53:04,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 397 transitions, 18018 flow [2021-06-10 14:53:04,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:04,340 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:04,340 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:04,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:04,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:04,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:04,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:04,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:04,341 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:04,341 INFO L185 Difference]: Start difference. First operand has 454 places, 393 transitions, 17244 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:04,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 397 transitions, 18018 flow [2021-06-10 14:53:04,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 397 transitions, 17750 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:04,995 INFO L241 Difference]: Finished difference. Result has 456 places, 391 transitions, 17121 flow [2021-06-10 14:53:04,995 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16984, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17121, PETRI_PLACES=456, PETRI_TRANSITIONS=391} [2021-06-10 14:53:04,995 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 412 predicate places. [2021-06-10 14:53:04,995 INFO L480 AbstractCegarLoop]: Abstraction has has 456 places, 391 transitions, 17121 flow [2021-06-10 14:53:04,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:04,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:04,995 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:04,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-10 14:53:04,996 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:04,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:04,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1944720257, now seen corresponding path program 103 times [2021-06-10 14:53:04,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:04,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669717476] [2021-06-10 14:53:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:05,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:05,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:05,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:05,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:05,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:05,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:05,014 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:05,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:05,024 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:53:05,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:53:05,048 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:05,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:05,068 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:05,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:05,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669717476] [2021-06-10 14:53:05,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:05,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:05,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82930930] [2021-06-10 14:53:05,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:05,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:05,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:05,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:05,087 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:05,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 391 transitions, 17121 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:05,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:05,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:05,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:05,810 INFO L129 PetriNetUnfolder]: 49/2734 cut-off events. [2021-06-10 14:53:05,811 INFO L130 PetriNetUnfolder]: For 103696/104972 co-relation queries the response was YES. [2021-06-10 14:53:05,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19901 conditions, 2734 events. 49/2734 cut-off events. For 103696/104972 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 40379 event pairs, 49 based on Foata normal form. 22/2664 useless extension candidates. Maximal degree in co-relation 19779. Up to 375 conditions per place. [2021-06-10 14:53:05,830 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 244 selfloop transitions, 131 changer transitions 2/395 dead transitions. [2021-06-10 14:53:05,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 395 transitions, 17891 flow [2021-06-10 14:53:05,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:05,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:05,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:05,832 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:05,832 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:05,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:05,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:05,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:05,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:05,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:05,832 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:05,832 INFO L185 Difference]: Start difference. First operand has 456 places, 391 transitions, 17121 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:05,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 395 transitions, 17891 flow [2021-06-10 14:53:06,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 395 transitions, 17624 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:06,473 INFO L241 Difference]: Finished difference. Result has 458 places, 389 transitions, 16989 flow [2021-06-10 14:53:06,473 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16862, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16989, PETRI_PLACES=458, PETRI_TRANSITIONS=389} [2021-06-10 14:53:06,474 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 414 predicate places. [2021-06-10 14:53:06,474 INFO L480 AbstractCegarLoop]: Abstraction has has 458 places, 389 transitions, 16989 flow [2021-06-10 14:53:06,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:06,474 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:06,474 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:06,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-10 14:53:06,474 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:06,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:06,474 INFO L82 PathProgramCache]: Analyzing trace with hash -399555637, now seen corresponding path program 104 times [2021-06-10 14:53:06,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:06,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78886130] [2021-06-10 14:53:06,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:06,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:06,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:06,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:06,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:06,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:06,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:06,496 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:06,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:06,515 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:53:06,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:53:06,539 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:06,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:06,556 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:06,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:06,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78886130] [2021-06-10 14:53:06,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:06,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:06,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48986216] [2021-06-10 14:53:06,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:06,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:06,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:06,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:06,575 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:06,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 389 transitions, 16989 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:06,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:06,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:06,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:07,266 INFO L129 PetriNetUnfolder]: 49/2725 cut-off events. [2021-06-10 14:53:07,266 INFO L130 PetriNetUnfolder]: For 101501/102773 co-relation queries the response was YES. [2021-06-10 14:53:07,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19849 conditions, 2725 events. 49/2725 cut-off events. For 101501/102773 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 40226 event pairs, 49 based on Foata normal form. 20/2653 useless extension candidates. Maximal degree in co-relation 19728. Up to 375 conditions per place. [2021-06-10 14:53:07,285 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 244 selfloop transitions, 129 changer transitions 2/393 dead transitions. [2021-06-10 14:53:07,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 393 transitions, 17755 flow [2021-06-10 14:53:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:07,286 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:07,286 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:07,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:07,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:07,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:07,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:07,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:07,287 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:07,287 INFO L185 Difference]: Start difference. First operand has 458 places, 389 transitions, 16989 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:07,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 393 transitions, 17755 flow [2021-06-10 14:53:07,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 393 transitions, 17494 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:07,951 INFO L241 Difference]: Finished difference. Result has 460 places, 387 transitions, 16863 flow [2021-06-10 14:53:07,951 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16736, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16863, PETRI_PLACES=460, PETRI_TRANSITIONS=387} [2021-06-10 14:53:07,951 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 416 predicate places. [2021-06-10 14:53:07,951 INFO L480 AbstractCegarLoop]: Abstraction has has 460 places, 387 transitions, 16863 flow [2021-06-10 14:53:07,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:07,951 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:07,951 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:07,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-10 14:53:07,951 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:07,952 INFO L82 PathProgramCache]: Analyzing trace with hash 246814647, now seen corresponding path program 105 times [2021-06-10 14:53:07,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:07,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146765207] [2021-06-10 14:53:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:07,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:07,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:07,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:07,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:07,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:07,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:07,988 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:07,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:08,005 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:53:08,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:53:08,027 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:08,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:08,043 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:08,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:08,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:08,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146765207] [2021-06-10 14:53:08,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:08,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:08,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391802732] [2021-06-10 14:53:08,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:08,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:08,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:08,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:08,061 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:08,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 387 transitions, 16863 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:08,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:08,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:08,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:08,734 INFO L129 PetriNetUnfolder]: 49/2716 cut-off events. [2021-06-10 14:53:08,734 INFO L130 PetriNetUnfolder]: For 101066/102328 co-relation queries the response was YES. [2021-06-10 14:53:08,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19781 conditions, 2716 events. 49/2716 cut-off events. For 101066/102328 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 40055 event pairs, 49 based on Foata normal form. 20/2645 useless extension candidates. Maximal degree in co-relation 19660. Up to 375 conditions per place. [2021-06-10 14:53:08,753 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 241 selfloop transitions, 130 changer transitions 2/391 dead transitions. [2021-06-10 14:53:08,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 391 transitions, 17625 flow [2021-06-10 14:53:08,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:08,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:08,754 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:08,754 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:08,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:08,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:08,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:08,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:08,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:08,755 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:08,755 INFO L185 Difference]: Start difference. First operand has 460 places, 387 transitions, 16863 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:08,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 391 transitions, 17625 flow [2021-06-10 14:53:09,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 391 transitions, 17361 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-06-10 14:53:09,382 INFO L241 Difference]: Finished difference. Result has 461 places, 385 transitions, 16750 flow [2021-06-10 14:53:09,382 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16607, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16750, PETRI_PLACES=461, PETRI_TRANSITIONS=385} [2021-06-10 14:53:09,383 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 417 predicate places. [2021-06-10 14:53:09,383 INFO L480 AbstractCegarLoop]: Abstraction has has 461 places, 385 transitions, 16750 flow [2021-06-10 14:53:09,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:09,383 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:09,383 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:09,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-10 14:53:09,383 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:09,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:09,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1125736321, now seen corresponding path program 106 times [2021-06-10 14:53:09,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:09,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550483985] [2021-06-10 14:53:09,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:09,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:09,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:09,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:09,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:09,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:09,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:09,401 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:09,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:09,417 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:53:09,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:53:09,440 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:53:09,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:53:09,457 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:09,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:09,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:09,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550483985] [2021-06-10 14:53:09,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:09,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:09,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735752809] [2021-06-10 14:53:09,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:09,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:09,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:09,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:09,475 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:09,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 385 transitions, 16750 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:09,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:09,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:09,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:10,154 INFO L129 PetriNetUnfolder]: 49/2698 cut-off events. [2021-06-10 14:53:10,158 INFO L130 PetriNetUnfolder]: For 98919/100187 co-relation queries the response was YES. [2021-06-10 14:53:10,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19687 conditions, 2698 events. 49/2698 cut-off events. For 98919/100187 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 39811 event pairs, 49 based on Foata normal form. 22/2629 useless extension candidates. Maximal degree in co-relation 19568. Up to 375 conditions per place. [2021-06-10 14:53:10,172 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 241 selfloop transitions, 128 changer transitions 2/389 dead transitions. [2021-06-10 14:53:10,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 389 transitions, 17508 flow [2021-06-10 14:53:10,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:10,173 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:10,173 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:10,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:10,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:10,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:10,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:10,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:10,174 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:10,174 INFO L185 Difference]: Start difference. First operand has 461 places, 385 transitions, 16750 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:10,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 389 transitions, 17508 flow [2021-06-10 14:53:10,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 389 transitions, 17251 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:53:10,771 INFO L241 Difference]: Finished difference. Result has 462 places, 383 transitions, 16626 flow [2021-06-10 14:53:10,771 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16501, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16626, PETRI_PLACES=462, PETRI_TRANSITIONS=383} [2021-06-10 14:53:10,771 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 418 predicate places. [2021-06-10 14:53:10,771 INFO L480 AbstractCegarLoop]: Abstraction has has 462 places, 383 transitions, 16626 flow [2021-06-10 14:53:10,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:10,771 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:10,771 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:10,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-10 14:53:10,771 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:10,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:10,771 INFO L82 PathProgramCache]: Analyzing trace with hash 781023973, now seen corresponding path program 107 times [2021-06-10 14:53:10,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:10,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775940744] [2021-06-10 14:53:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:10,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:10,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:10,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:10,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:10,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:10,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:10,789 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:10,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:10,807 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:10,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:10,820 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:10,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:10,838 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:10,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:10,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775940744] [2021-06-10 14:53:10,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:10,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:10,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704014664] [2021-06-10 14:53:10,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:10,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:10,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:10,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:10,857 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:10,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 383 transitions, 16626 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:10,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:10,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:10,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:11,531 INFO L129 PetriNetUnfolder]: 49/2689 cut-off events. [2021-06-10 14:53:11,532 INFO L130 PetriNetUnfolder]: For 98362/99638 co-relation queries the response was YES. [2021-06-10 14:53:11,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19614 conditions, 2689 events. 49/2689 cut-off events. For 98362/99638 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 39602 event pairs, 49 based on Foata normal form. 22/2620 useless extension candidates. Maximal degree in co-relation 19496. Up to 375 conditions per place. [2021-06-10 14:53:11,554 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 243 selfloop transitions, 124 changer transitions 2/387 dead transitions. [2021-06-10 14:53:11,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 387 transitions, 17380 flow [2021-06-10 14:53:11,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:11,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:11,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:11,555 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:11,556 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:11,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:11,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:11,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:11,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:11,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:11,556 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:11,556 INFO L185 Difference]: Start difference. First operand has 462 places, 383 transitions, 16626 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:11,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 387 transitions, 17380 flow [2021-06-10 14:53:12,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 387 transitions, 17129 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:12,184 INFO L241 Difference]: Finished difference. Result has 464 places, 381 transitions, 16508 flow [2021-06-10 14:53:12,185 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16383, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16508, PETRI_PLACES=464, PETRI_TRANSITIONS=381} [2021-06-10 14:53:12,185 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 420 predicate places. [2021-06-10 14:53:12,185 INFO L480 AbstractCegarLoop]: Abstraction has has 464 places, 381 transitions, 16508 flow [2021-06-10 14:53:12,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:12,185 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:12,185 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:12,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-10 14:53:12,185 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:12,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:12,185 INFO L82 PathProgramCache]: Analyzing trace with hash -446580309, now seen corresponding path program 108 times [2021-06-10 14:53:12,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:12,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963790205] [2021-06-10 14:53:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:12,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:12,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:12,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:12,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:12,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:12,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:12,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:12,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:53:12,212 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:12,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:12,226 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:12,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:12,244 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:12,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:12,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:12,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963790205] [2021-06-10 14:53:12,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:12,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:12,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74876565] [2021-06-10 14:53:12,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:12,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:12,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:12,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:12,262 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:12,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 381 transitions, 16508 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:12,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:12,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:12,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:12,938 INFO L129 PetriNetUnfolder]: 49/2679 cut-off events. [2021-06-10 14:53:12,938 INFO L130 PetriNetUnfolder]: For 97884/99154 co-relation queries the response was YES. [2021-06-10 14:53:12,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19541 conditions, 2679 events. 49/2679 cut-off events. For 97884/99154 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 39403 event pairs, 49 based on Foata normal form. 20/2608 useless extension candidates. Maximal degree in co-relation 19423. Up to 362 conditions per place. [2021-06-10 14:53:12,958 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 233 selfloop transitions, 132 changer transitions 2/385 dead transitions. [2021-06-10 14:53:12,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 385 transitions, 17258 flow [2021-06-10 14:53:12,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:12,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:12,959 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:12,959 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:12,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:12,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:12,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:12,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:12,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:12,960 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:12,960 INFO L185 Difference]: Start difference. First operand has 464 places, 381 transitions, 16508 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:12,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 385 transitions, 17258 flow [2021-06-10 14:53:13,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 385 transitions, 17136 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-06-10 14:53:13,677 INFO L241 Difference]: Finished difference. Result has 468 places, 379 transitions, 16544 flow [2021-06-10 14:53:13,678 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16394, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16544, PETRI_PLACES=468, PETRI_TRANSITIONS=379} [2021-06-10 14:53:13,678 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 424 predicate places. [2021-06-10 14:53:13,678 INFO L480 AbstractCegarLoop]: Abstraction has has 468 places, 379 transitions, 16544 flow [2021-06-10 14:53:13,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:13,678 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:13,678 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:13,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-10 14:53:13,678 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:13,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:13,678 INFO L82 PathProgramCache]: Analyzing trace with hash -868675343, now seen corresponding path program 109 times [2021-06-10 14:53:13,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:13,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560270516] [2021-06-10 14:53:13,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:13,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:13,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:13,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:13,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:13,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:13,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:13,698 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:13,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:13,708 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:13,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:13,722 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:13,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:13,740 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:13,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:13,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:13,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560270516] [2021-06-10 14:53:13,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:13,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:13,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648349385] [2021-06-10 14:53:13,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:13,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:13,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:13,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:13,758 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:13,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 379 transitions, 16544 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:13,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:13,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:13,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:14,410 INFO L129 PetriNetUnfolder]: 49/2669 cut-off events. [2021-06-10 14:53:14,410 INFO L130 PetriNetUnfolder]: For 98034/99341 co-relation queries the response was YES. [2021-06-10 14:53:14,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19676 conditions, 2669 events. 49/2669 cut-off events. For 98034/99341 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 39270 event pairs, 49 based on Foata normal form. 20/2598 useless extension candidates. Maximal degree in co-relation 19558. Up to 362 conditions per place. [2021-06-10 14:53:14,429 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 234 selfloop transitions, 129 changer transitions 2/383 dead transitions. [2021-06-10 14:53:14,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 383 transitions, 17290 flow [2021-06-10 14:53:14,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:14,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:14,430 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:14,430 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:14,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:14,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:14,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:14,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:14,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:14,431 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:14,431 INFO L185 Difference]: Start difference. First operand has 468 places, 379 transitions, 16544 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:14,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 383 transitions, 17290 flow [2021-06-10 14:53:15,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 383 transitions, 17012 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-06-10 14:53:15,081 INFO L241 Difference]: Finished difference. Result has 468 places, 377 transitions, 16418 flow [2021-06-10 14:53:15,082 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16274, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16418, PETRI_PLACES=468, PETRI_TRANSITIONS=377} [2021-06-10 14:53:15,082 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 424 predicate places. [2021-06-10 14:53:15,082 INFO L480 AbstractCegarLoop]: Abstraction has has 468 places, 377 transitions, 16418 flow [2021-06-10 14:53:15,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:15,082 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:15,082 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:15,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-10 14:53:15,082 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:15,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:15,082 INFO L82 PathProgramCache]: Analyzing trace with hash 846612771, now seen corresponding path program 110 times [2021-06-10 14:53:15,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:15,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831002011] [2021-06-10 14:53:15,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:15,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:15,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:15,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:15,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:15,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:15,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:15,100 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:15,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:15,110 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:15,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:15,124 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:15,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:15,141 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:15,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:15,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831002011] [2021-06-10 14:53:15,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:15,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:15,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453400261] [2021-06-10 14:53:15,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:15,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:15,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:15,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:15,160 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:15,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 377 transitions, 16418 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:15,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:15,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:15,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:15,805 INFO L129 PetriNetUnfolder]: 49/2659 cut-off events. [2021-06-10 14:53:15,805 INFO L130 PetriNetUnfolder]: For 96951/98217 co-relation queries the response was YES. [2021-06-10 14:53:15,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19617 conditions, 2659 events. 49/2659 cut-off events. For 96951/98217 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 39085 event pairs, 49 based on Foata normal form. 22/2590 useless extension candidates. Maximal degree in co-relation 19501. Up to 362 conditions per place. [2021-06-10 14:53:15,825 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 230 selfloop transitions, 131 changer transitions 2/381 dead transitions. [2021-06-10 14:53:15,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 381 transitions, 17160 flow [2021-06-10 14:53:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:15,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:15,826 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:15,826 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:15,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:15,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:15,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:15,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:15,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:15,827 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:15,827 INFO L185 Difference]: Start difference. First operand has 468 places, 377 transitions, 16418 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:15,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 381 transitions, 17160 flow [2021-06-10 14:53:16,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 381 transitions, 16901 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:16,470 INFO L241 Difference]: Finished difference. Result has 470 places, 375 transitions, 16312 flow [2021-06-10 14:53:16,470 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16167, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16312, PETRI_PLACES=470, PETRI_TRANSITIONS=375} [2021-06-10 14:53:16,470 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 426 predicate places. [2021-06-10 14:53:16,470 INFO L480 AbstractCegarLoop]: Abstraction has has 470 places, 375 transitions, 16312 flow [2021-06-10 14:53:16,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:16,471 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:16,471 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:16,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-10 14:53:16,471 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:16,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:16,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1906579761, now seen corresponding path program 111 times [2021-06-10 14:53:16,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:16,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346762056] [2021-06-10 14:53:16,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:16,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:16,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:16,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:16,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:16,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:16,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:16,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:16,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:53:16,498 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:16,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:16,512 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:16,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:16,530 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:16,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:16,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346762056] [2021-06-10 14:53:16,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:16,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:16,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672039667] [2021-06-10 14:53:16,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:16,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:16,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:16,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:16,549 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:16,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 375 transitions, 16312 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:16,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:16,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:16,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:17,208 INFO L129 PetriNetUnfolder]: 49/2650 cut-off events. [2021-06-10 14:53:17,208 INFO L130 PetriNetUnfolder]: For 96355/97621 co-relation queries the response was YES. [2021-06-10 14:53:17,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19554 conditions, 2650 events. 49/2650 cut-off events. For 96355/97621 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 38878 event pairs, 49 based on Foata normal form. 22/2582 useless extension candidates. Maximal degree in co-relation 19438. Up to 362 conditions per place. [2021-06-10 14:53:17,225 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 219 selfloop transitions, 141 changer transitions 1/379 dead transitions. [2021-06-10 14:53:17,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 379 transitions, 17050 flow [2021-06-10 14:53:17,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:17,226 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:17,226 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:17,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:17,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:17,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:17,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:17,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:17,227 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:17,227 INFO L185 Difference]: Start difference. First operand has 470 places, 375 transitions, 16312 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:17,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 379 transitions, 17050 flow [2021-06-10 14:53:17,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 379 transitions, 16778 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-06-10 14:53:17,831 INFO L241 Difference]: Finished difference. Result has 471 places, 374 transitions, 16263 flow [2021-06-10 14:53:17,831 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16048, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16263, PETRI_PLACES=471, PETRI_TRANSITIONS=374} [2021-06-10 14:53:17,831 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 427 predicate places. [2021-06-10 14:53:17,831 INFO L480 AbstractCegarLoop]: Abstraction has has 471 places, 374 transitions, 16263 flow [2021-06-10 14:53:17,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:17,831 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:17,831 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:17,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-10 14:53:17,832 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:17,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:17,832 INFO L82 PathProgramCache]: Analyzing trace with hash -82917441, now seen corresponding path program 112 times [2021-06-10 14:53:17,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:17,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299533302] [2021-06-10 14:53:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:17,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:17,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:17,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:17,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:17,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:17,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:17,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:17,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:17,859 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:17,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:17,873 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:17,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:17,891 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:17,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:17,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299533302] [2021-06-10 14:53:17,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:17,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:17,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618950331] [2021-06-10 14:53:17,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:17,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:17,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:17,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:17,910 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:17,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 374 transitions, 16263 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:17,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:17,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:17,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:18,539 INFO L129 PetriNetUnfolder]: 49/2645 cut-off events. [2021-06-10 14:53:18,540 INFO L130 PetriNetUnfolder]: For 95108/96409 co-relation queries the response was YES. [2021-06-10 14:53:18,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19556 conditions, 2645 events. 49/2645 cut-off events. For 95108/96409 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 38854 event pairs, 49 based on Foata normal form. 20/2575 useless extension candidates. Maximal degree in co-relation 19442. Up to 362 conditions per place. [2021-06-10 14:53:18,558 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 229 selfloop transitions, 129 changer transitions 2/378 dead transitions. [2021-06-10 14:53:18,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 378 transitions, 16999 flow [2021-06-10 14:53:18,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:18,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:18,559 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:18,559 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:18,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:18,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:18,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:18,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:18,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:18,560 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:18,560 INFO L185 Difference]: Start difference. First operand has 471 places, 374 transitions, 16263 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:18,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 378 transitions, 16999 flow [2021-06-10 14:53:19,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 378 transitions, 16736 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:19,175 INFO L241 Difference]: Finished difference. Result has 473 places, 372 transitions, 16166 flow [2021-06-10 14:53:19,175 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16008, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16166, PETRI_PLACES=473, PETRI_TRANSITIONS=372} [2021-06-10 14:53:19,175 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 429 predicate places. [2021-06-10 14:53:19,175 INFO L480 AbstractCegarLoop]: Abstraction has has 473 places, 372 transitions, 16166 flow [2021-06-10 14:53:19,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:19,175 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:19,175 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:19,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-10 14:53:19,176 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:19,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:19,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1149143355, now seen corresponding path program 113 times [2021-06-10 14:53:19,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:19,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643738192] [2021-06-10 14:53:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:19,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:19,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:19,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:19,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:19,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:19,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:19,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:19,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:53:19,207 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:53:19,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:53:19,230 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:19,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:19,261 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:19,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:19,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643738192] [2021-06-10 14:53:19,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:19,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:19,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199118919] [2021-06-10 14:53:19,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:19,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:19,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:19,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:19,280 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:19,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 372 transitions, 16166 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:19,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:19,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:19,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:19,912 INFO L129 PetriNetUnfolder]: 49/2633 cut-off events. [2021-06-10 14:53:19,912 INFO L130 PetriNetUnfolder]: For 93292/94553 co-relation queries the response was YES. [2021-06-10 14:53:19,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19519 conditions, 2633 events. 49/2633 cut-off events. For 93292/94553 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 38619 event pairs, 49 based on Foata normal form. 20/2563 useless extension candidates. Maximal degree in co-relation 19406. Up to 362 conditions per place. [2021-06-10 14:53:19,931 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 218 selfloop transitions, 138 changer transitions 2/376 dead transitions. [2021-06-10 14:53:19,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 376 transitions, 16898 flow [2021-06-10 14:53:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:19,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:19,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:19,932 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:19,932 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:19,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:19,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:19,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:19,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:19,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:19,933 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:19,933 INFO L185 Difference]: Start difference. First operand has 473 places, 372 transitions, 16166 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:19,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 376 transitions, 16898 flow [2021-06-10 14:53:20,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 376 transitions, 16693 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 14:53:20,584 INFO L241 Difference]: Finished difference. Result has 476 places, 370 transitions, 16127 flow [2021-06-10 14:53:20,584 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15969, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16127, PETRI_PLACES=476, PETRI_TRANSITIONS=370} [2021-06-10 14:53:20,584 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 432 predicate places. [2021-06-10 14:53:20,584 INFO L480 AbstractCegarLoop]: Abstraction has has 476 places, 370 transitions, 16127 flow [2021-06-10 14:53:20,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:20,585 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:20,585 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:20,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-10 14:53:20,585 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:20,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:20,585 INFO L82 PathProgramCache]: Analyzing trace with hash 784225615, now seen corresponding path program 114 times [2021-06-10 14:53:20,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:20,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405213138] [2021-06-10 14:53:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:20,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:20,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:20,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:20,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:20,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:20,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:20,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:20,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:53:20,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:20,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:20,636 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:20,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:20,654 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:20,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:20,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405213138] [2021-06-10 14:53:20,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:20,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:20,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742793386] [2021-06-10 14:53:20,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:20,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:20,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:20,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:20,673 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:20,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 370 transitions, 16127 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:20,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:20,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:20,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:21,308 INFO L129 PetriNetUnfolder]: 49/2623 cut-off events. [2021-06-10 14:53:21,309 INFO L130 PetriNetUnfolder]: For 93219/94523 co-relation queries the response was YES. [2021-06-10 14:53:21,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19511 conditions, 2623 events. 49/2623 cut-off events. For 93219/94523 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 38414 event pairs, 49 based on Foata normal form. 22/2555 useless extension candidates. Maximal degree in co-relation 19398. Up to 362 conditions per place. [2021-06-10 14:53:21,329 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 219 selfloop transitions, 135 changer transitions 2/374 dead transitions. [2021-06-10 14:53:21,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 374 transitions, 16855 flow [2021-06-10 14:53:21,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:21,330 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:21,330 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:21,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:21,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:21,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:21,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:21,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:21,331 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:21,331 INFO L185 Difference]: Start difference. First operand has 476 places, 370 transitions, 16127 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:21,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 374 transitions, 16855 flow [2021-06-10 14:53:21,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 374 transitions, 16537 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-06-10 14:53:21,947 INFO L241 Difference]: Finished difference. Result has 476 places, 368 transitions, 15968 flow [2021-06-10 14:53:21,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15817, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15968, PETRI_PLACES=476, PETRI_TRANSITIONS=368} [2021-06-10 14:53:21,948 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 432 predicate places. [2021-06-10 14:53:21,948 INFO L480 AbstractCegarLoop]: Abstraction has has 476 places, 368 transitions, 15968 flow [2021-06-10 14:53:21,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:21,948 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:21,948 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:21,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-10 14:53:21,948 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:21,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:21,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1162213451, now seen corresponding path program 115 times [2021-06-10 14:53:21,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:21,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248205006] [2021-06-10 14:53:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:21,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:21,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:21,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:21,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:21,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:21,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:21,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:21,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:53:21,998 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:21,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:22,012 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:22,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:22,030 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:22,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:22,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248205006] [2021-06-10 14:53:22,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:22,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:22,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697626155] [2021-06-10 14:53:22,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:22,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:22,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:22,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:22,049 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:22,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 368 transitions, 15968 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:22,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:22,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:22,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:22,670 INFO L129 PetriNetUnfolder]: 49/2613 cut-off events. [2021-06-10 14:53:22,671 INFO L130 PetriNetUnfolder]: For 92906/94321 co-relation queries the response was YES. [2021-06-10 14:53:22,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19399 conditions, 2613 events. 49/2613 cut-off events. For 92906/94321 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 38319 event pairs, 49 based on Foata normal form. 22/2545 useless extension candidates. Maximal degree in co-relation 19286. Up to 362 conditions per place. [2021-06-10 14:53:22,689 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 216 selfloop transitions, 136 changer transitions 2/372 dead transitions. [2021-06-10 14:53:22,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 372 transitions, 16692 flow [2021-06-10 14:53:22,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:22,690 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:22,690 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:22,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:22,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:22,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:22,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:22,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:22,690 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:22,691 INFO L185 Difference]: Start difference. First operand has 476 places, 368 transitions, 15968 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:22,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 372 transitions, 16692 flow [2021-06-10 14:53:23,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 372 transitions, 16340 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-06-10 14:53:23,306 INFO L241 Difference]: Finished difference. Result has 477 places, 366 transitions, 15784 flow [2021-06-10 14:53:23,306 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15624, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15784, PETRI_PLACES=477, PETRI_TRANSITIONS=366} [2021-06-10 14:53:23,306 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 433 predicate places. [2021-06-10 14:53:23,306 INFO L480 AbstractCegarLoop]: Abstraction has has 477 places, 366 transitions, 15784 flow [2021-06-10 14:53:23,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:23,306 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:23,306 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:23,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-10 14:53:23,306 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:23,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:23,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1431382971, now seen corresponding path program 116 times [2021-06-10 14:53:23,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:23,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277759066] [2021-06-10 14:53:23,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:23,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:23,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:23,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:23,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:23,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:23,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:23,323 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:23,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:23,340 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:23,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:23,352 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:23,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:23,368 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:23,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:23,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277759066] [2021-06-10 14:53:23,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:23,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:23,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227507289] [2021-06-10 14:53:23,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:23,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:23,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:23,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:23,385 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:23,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 366 transitions, 15784 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:23,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:23,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:23,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:24,007 INFO L129 PetriNetUnfolder]: 49/2598 cut-off events. [2021-06-10 14:53:24,008 INFO L130 PetriNetUnfolder]: For 91426/92687 co-relation queries the response was YES. [2021-06-10 14:53:24,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19151 conditions, 2598 events. 49/2598 cut-off events. For 91426/92687 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 38044 event pairs, 49 based on Foata normal form. 20/2529 useless extension candidates. Maximal degree in co-relation 19038. Up to 362 conditions per place. [2021-06-10 14:53:24,024 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 226 selfloop transitions, 124 changer transitions 2/370 dead transitions. [2021-06-10 14:53:24,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 370 transitions, 16504 flow [2021-06-10 14:53:24,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:24,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:24,025 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:24,025 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:24,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:24,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:24,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:24,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:24,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:24,026 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:24,026 INFO L185 Difference]: Start difference. First operand has 477 places, 366 transitions, 15784 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:24,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 370 transitions, 16504 flow [2021-06-10 14:53:24,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 370 transitions, 16239 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:24,586 INFO L241 Difference]: Finished difference. Result has 479 places, 364 transitions, 15653 flow [2021-06-10 14:53:24,586 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15527, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15653, PETRI_PLACES=479, PETRI_TRANSITIONS=364} [2021-06-10 14:53:24,586 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 435 predicate places. [2021-06-10 14:53:24,586 INFO L480 AbstractCegarLoop]: Abstraction has has 479 places, 364 transitions, 15653 flow [2021-06-10 14:53:24,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:24,587 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:24,587 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:24,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-10 14:53:24,587 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:24,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:24,587 INFO L82 PathProgramCache]: Analyzing trace with hash -146430449, now seen corresponding path program 117 times [2021-06-10 14:53:24,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:24,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714980791] [2021-06-10 14:53:24,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:24,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:24,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:24,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:24,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:24,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:24,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:24,606 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:24,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:24,615 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:24,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:24,629 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:24,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:24,646 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:24,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:24,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714980791] [2021-06-10 14:53:24,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:24,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:24,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805213098] [2021-06-10 14:53:24,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:24,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:24,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:24,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:24,668 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:24,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 364 transitions, 15653 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:24,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:24,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:24,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:25,301 INFO L129 PetriNetUnfolder]: 49/2588 cut-off events. [2021-06-10 14:53:25,301 INFO L130 PetriNetUnfolder]: For 91059/92359 co-relation queries the response was YES. [2021-06-10 14:53:25,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19095 conditions, 2588 events. 49/2588 cut-off events. For 91059/92359 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 37839 event pairs, 49 based on Foata normal form. 20/2519 useless extension candidates. Maximal degree in co-relation 18982. Up to 362 conditions per place. [2021-06-10 14:53:25,319 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 224 selfloop transitions, 124 changer transitions 2/368 dead transitions. [2021-06-10 14:53:25,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 368 transitions, 16369 flow [2021-06-10 14:53:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:25,320 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:25,320 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:25,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:25,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:25,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:25,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:25,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:25,321 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:25,321 INFO L185 Difference]: Start difference. First operand has 479 places, 364 transitions, 15653 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:25,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 368 transitions, 16369 flow [2021-06-10 14:53:25,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 368 transitions, 16124 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:25,930 INFO L241 Difference]: Finished difference. Result has 481 places, 362 transitions, 15539 flow [2021-06-10 14:53:25,931 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15416, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15539, PETRI_PLACES=481, PETRI_TRANSITIONS=362} [2021-06-10 14:53:25,931 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 437 predicate places. [2021-06-10 14:53:25,931 INFO L480 AbstractCegarLoop]: Abstraction has has 481 places, 362 transitions, 15539 flow [2021-06-10 14:53:25,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:25,931 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:25,931 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:25,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-10 14:53:25,931 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:25,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:25,931 INFO L82 PathProgramCache]: Analyzing trace with hash -2585847, now seen corresponding path program 118 times [2021-06-10 14:53:25,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:25,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155083669] [2021-06-10 14:53:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:25,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:25,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:25,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:25,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:25,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:25,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:25,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:25,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:53:25,959 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:25,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:25,973 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:25,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:25,995 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:25,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:26,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155083669] [2021-06-10 14:53:26,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:26,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:26,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161352150] [2021-06-10 14:53:26,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:26,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:26,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:26,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:26,013 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:26,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 362 transitions, 15539 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:26,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:26,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:26,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:26,633 INFO L129 PetriNetUnfolder]: 49/2578 cut-off events. [2021-06-10 14:53:26,633 INFO L130 PetriNetUnfolder]: For 89527/90792 co-relation queries the response was YES. [2021-06-10 14:53:26,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19075 conditions, 2578 events. 49/2578 cut-off events. For 89527/90792 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 37678 event pairs, 49 based on Foata normal form. 22/2511 useless extension candidates. Maximal degree in co-relation 18963. Up to 362 conditions per place. [2021-06-10 14:53:26,651 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 220 selfloop transitions, 126 changer transitions 2/366 dead transitions. [2021-06-10 14:53:26,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 366 transitions, 16251 flow [2021-06-10 14:53:26,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:26,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:26,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:26,652 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:26,652 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:26,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:26,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:26,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:26,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:26,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:26,653 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:26,653 INFO L185 Difference]: Start difference. First operand has 481 places, 362 transitions, 15539 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:26,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 366 transitions, 16251 flow [2021-06-10 14:53:27,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 366 transitions, 16047 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 14:53:27,279 INFO L241 Difference]: Finished difference. Result has 484 places, 360 transitions, 15477 flow [2021-06-10 14:53:27,280 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15343, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15477, PETRI_PLACES=484, PETRI_TRANSITIONS=360} [2021-06-10 14:53:27,280 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 440 predicate places. [2021-06-10 14:53:27,280 INFO L480 AbstractCegarLoop]: Abstraction has has 484 places, 360 transitions, 15477 flow [2021-06-10 14:53:27,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:27,280 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:27,280 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:27,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-10 14:53:27,280 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:27,281 INFO L82 PathProgramCache]: Analyzing trace with hash -529037179, now seen corresponding path program 119 times [2021-06-10 14:53:27,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:27,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877022709] [2021-06-10 14:53:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:27,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:27,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:27,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:27,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:27,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:27,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:27,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:27,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:53:27,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:27,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:27,321 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:27,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:27,339 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:27,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:27,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877022709] [2021-06-10 14:53:27,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:27,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:27,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814052007] [2021-06-10 14:53:27,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:27,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:27,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:27,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:27,358 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:27,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 360 transitions, 15477 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:27,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:27,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:27,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:27,968 INFO L129 PetriNetUnfolder]: 49/2569 cut-off events. [2021-06-10 14:53:27,968 INFO L130 PetriNetUnfolder]: For 89292/90557 co-relation queries the response was YES. [2021-06-10 14:53:27,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19064 conditions, 2569 events. 49/2569 cut-off events. For 89292/90557 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 37558 event pairs, 49 based on Foata normal form. 22/2503 useless extension candidates. Maximal degree in co-relation 18952. Up to 362 conditions per place. [2021-06-10 14:53:27,986 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 220 selfloop transitions, 123 changer transitions 3/364 dead transitions. [2021-06-10 14:53:27,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 364 transitions, 16185 flow [2021-06-10 14:53:27,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:27,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:27,987 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:27,987 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:27,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:27,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:27,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:27,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:27,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:27,988 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:27,988 INFO L185 Difference]: Start difference. First operand has 484 places, 360 transitions, 15477 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:27,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 364 transitions, 16185 flow [2021-06-10 14:53:28,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 364 transitions, 15933 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:28,550 INFO L241 Difference]: Finished difference. Result has 486 places, 357 transitions, 15321 flow [2021-06-10 14:53:28,551 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15233, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15321, PETRI_PLACES=486, PETRI_TRANSITIONS=357} [2021-06-10 14:53:28,551 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 442 predicate places. [2021-06-10 14:53:28,551 INFO L480 AbstractCegarLoop]: Abstraction has has 486 places, 357 transitions, 15321 flow [2021-06-10 14:53:28,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:28,551 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:28,551 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:28,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-10 14:53:28,551 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:28,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:28,551 INFO L82 PathProgramCache]: Analyzing trace with hash 4373277, now seen corresponding path program 120 times [2021-06-10 14:53:28,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:28,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832806417] [2021-06-10 14:53:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:28,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:28,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:28,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:28,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:28,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:28,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:28,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:28,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:53:28,578 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:53:28,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:53:28,601 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:28,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:28,619 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:28,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:28,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:28,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832806417] [2021-06-10 14:53:28,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:28,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:28,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358382885] [2021-06-10 14:53:28,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:28,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:28,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:28,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:28,638 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:28,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 357 transitions, 15321 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:28,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:28,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:28,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:29,226 INFO L129 PetriNetUnfolder]: 49/2557 cut-off events. [2021-06-10 14:53:29,226 INFO L130 PetriNetUnfolder]: For 87912/89212 co-relation queries the response was YES. [2021-06-10 14:53:29,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19010 conditions, 2557 events. 49/2557 cut-off events. For 87912/89212 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 37354 event pairs, 49 based on Foata normal form. 20/2489 useless extension candidates. Maximal degree in co-relation 18899. Up to 362 conditions per place. [2021-06-10 14:53:29,243 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 219 selfloop transitions, 123 changer transitions 1/361 dead transitions. [2021-06-10 14:53:29,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 361 transitions, 16023 flow [2021-06-10 14:53:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:29,244 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:29,244 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:29,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:29,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:29,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:29,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:29,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:29,245 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:29,245 INFO L185 Difference]: Start difference. First operand has 486 places, 357 transitions, 15321 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:29,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 361 transitions, 16023 flow [2021-06-10 14:53:29,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 361 transitions, 15776 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:29,862 INFO L241 Difference]: Finished difference. Result has 488 places, 356 transitions, 15259 flow [2021-06-10 14:53:29,862 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15082, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15259, PETRI_PLACES=488, PETRI_TRANSITIONS=356} [2021-06-10 14:53:29,862 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 444 predicate places. [2021-06-10 14:53:29,862 INFO L480 AbstractCegarLoop]: Abstraction has has 488 places, 356 transitions, 15259 flow [2021-06-10 14:53:29,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:29,862 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:29,862 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:29,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-10 14:53:29,862 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:29,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:29,863 INFO L82 PathProgramCache]: Analyzing trace with hash 682525099, now seen corresponding path program 121 times [2021-06-10 14:53:29,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:29,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300465122] [2021-06-10 14:53:29,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:29,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:29,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:29,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:29,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:29,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:29,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:29,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:29,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:53:29,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 14:53:29,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 14:53:29,913 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:29,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:29,931 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:29,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:29,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:29,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300465122] [2021-06-10 14:53:29,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:29,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:29,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416646590] [2021-06-10 14:53:29,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:29,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:29,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:29,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:29,949 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:29,949 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 356 transitions, 15259 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:29,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:29,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:29,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:30,551 INFO L129 PetriNetUnfolder]: 49/2549 cut-off events. [2021-06-10 14:53:30,551 INFO L130 PetriNetUnfolder]: For 87492/88753 co-relation queries the response was YES. [2021-06-10 14:53:30,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18975 conditions, 2549 events. 49/2549 cut-off events. For 87492/88753 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 37150 event pairs, 49 based on Foata normal form. 20/2481 useless extension candidates. Maximal degree in co-relation 18864. Up to 362 conditions per place. [2021-06-10 14:53:30,566 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 219 selfloop transitions, 121 changer transitions 2/360 dead transitions. [2021-06-10 14:53:30,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 360 transitions, 15959 flow [2021-06-10 14:53:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:30,567 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:30,567 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:30,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:30,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:30,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:30,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:30,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:30,568 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:30,568 INFO L185 Difference]: Start difference. First operand has 488 places, 356 transitions, 15259 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:30,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 360 transitions, 15959 flow [2021-06-10 14:53:31,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 360 transitions, 15710 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:31,098 INFO L241 Difference]: Finished difference. Result has 490 places, 354 transitions, 15136 flow [2021-06-10 14:53:31,098 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15018, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15136, PETRI_PLACES=490, PETRI_TRANSITIONS=354} [2021-06-10 14:53:31,098 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 446 predicate places. [2021-06-10 14:53:31,098 INFO L480 AbstractCegarLoop]: Abstraction has has 490 places, 354 transitions, 15136 flow [2021-06-10 14:53:31,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:31,098 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:31,098 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:31,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-10 14:53:31,098 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:31,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:31,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1651552123, now seen corresponding path program 122 times [2021-06-10 14:53:31,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:31,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20898040] [2021-06-10 14:53:31,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:31,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:31,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:31,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:31,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:31,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:31,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:31,116 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:31,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:31,125 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:31,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:31,137 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:31,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:31,154 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:31,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:31,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20898040] [2021-06-10 14:53:31,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:31,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:31,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373987623] [2021-06-10 14:53:31,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:31,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:31,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:31,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:31,171 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:31,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 354 transitions, 15136 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:31,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:31,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:31,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:31,798 INFO L129 PetriNetUnfolder]: 49/2539 cut-off events. [2021-06-10 14:53:31,798 INFO L130 PetriNetUnfolder]: For 86243/87547 co-relation queries the response was YES. [2021-06-10 14:53:31,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18938 conditions, 2539 events. 49/2539 cut-off events. For 86243/87547 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 37039 event pairs, 49 based on Foata normal form. 22/2473 useless extension candidates. Maximal degree in co-relation 18828. Up to 362 conditions per place. [2021-06-10 14:53:31,816 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 201 selfloop transitions, 137 changer transitions 2/358 dead transitions. [2021-06-10 14:53:31,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 358 transitions, 15832 flow [2021-06-10 14:53:31,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:31,817 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:31,817 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:31,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:31,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:31,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:31,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:31,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:31,817 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:31,817 INFO L185 Difference]: Start difference. First operand has 490 places, 354 transitions, 15136 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:31,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 358 transitions, 15832 flow [2021-06-10 14:53:32,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 358 transitions, 15591 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:32,405 INFO L241 Difference]: Finished difference. Result has 492 places, 352 transitions, 15051 flow [2021-06-10 14:53:32,406 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14903, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15051, PETRI_PLACES=492, PETRI_TRANSITIONS=352} [2021-06-10 14:53:32,406 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 448 predicate places. [2021-06-10 14:53:32,406 INFO L480 AbstractCegarLoop]: Abstraction has has 492 places, 352 transitions, 15051 flow [2021-06-10 14:53:32,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:32,406 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:32,406 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:32,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-10 14:53:32,407 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:32,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:32,414 INFO L82 PathProgramCache]: Analyzing trace with hash 70182441, now seen corresponding path program 123 times [2021-06-10 14:53:32,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:32,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526051021] [2021-06-10 14:53:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:32,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:32,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:32,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:32,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:32,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:32,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:32,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:32,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:32,441 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:32,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:32,454 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:32,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:32,477 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:32,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:32,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526051021] [2021-06-10 14:53:32,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:32,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:32,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255196198] [2021-06-10 14:53:32,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:32,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:32,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:32,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:32,502 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:32,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 352 transitions, 15051 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:32,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:32,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:32,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:33,089 INFO L129 PetriNetUnfolder]: 49/2530 cut-off events. [2021-06-10 14:53:33,089 INFO L130 PetriNetUnfolder]: For 85795/87210 co-relation queries the response was YES. [2021-06-10 14:53:33,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18858 conditions, 2530 events. 49/2530 cut-off events. For 85795/87210 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 36819 event pairs, 49 based on Foata normal form. 22/2465 useless extension candidates. Maximal degree in co-relation 18748. Up to 362 conditions per place. [2021-06-10 14:53:33,107 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 201 selfloop transitions, 135 changer transitions 2/356 dead transitions. [2021-06-10 14:53:33,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 356 transitions, 15743 flow [2021-06-10 14:53:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:33,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:33,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:33,108 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:33,109 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:33,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:33,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:33,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:33,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:33,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:33,110 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:33,110 INFO L185 Difference]: Start difference. First operand has 492 places, 352 transitions, 15051 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:33,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 356 transitions, 15743 flow [2021-06-10 14:53:33,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 356 transitions, 15434 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:53:33,688 INFO L241 Difference]: Finished difference. Result has 493 places, 350 transitions, 14894 flow [2021-06-10 14:53:33,688 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14750, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14894, PETRI_PLACES=493, PETRI_TRANSITIONS=350} [2021-06-10 14:53:33,689 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 449 predicate places. [2021-06-10 14:53:33,689 INFO L480 AbstractCegarLoop]: Abstraction has has 493 places, 350 transitions, 14894 flow [2021-06-10 14:53:33,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:33,689 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:33,689 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:33,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-10 14:53:33,690 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:33,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:33,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1302638807, now seen corresponding path program 124 times [2021-06-10 14:53:33,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:33,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907565426] [2021-06-10 14:53:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:33,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:33,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:33,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:33,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:33,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:33,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:33,708 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:33,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:33,719 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:33,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:33,732 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:33,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:33,750 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:33,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:33,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907565426] [2021-06-10 14:53:33,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:33,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:33,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201143331] [2021-06-10 14:53:33,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:33,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:33,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:33,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:33,769 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:33,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 350 transitions, 14894 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:33,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:33,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:33,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:34,366 INFO L129 PetriNetUnfolder]: 49/2521 cut-off events. [2021-06-10 14:53:34,366 INFO L130 PetriNetUnfolder]: For 85051/86312 co-relation queries the response was YES. [2021-06-10 14:53:34,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18722 conditions, 2521 events. 49/2521 cut-off events. For 85051/86312 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 36657 event pairs, 49 based on Foata normal form. 20/2455 useless extension candidates. Maximal degree in co-relation 18612. Up to 362 conditions per place. [2021-06-10 14:53:34,384 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 196 selfloop transitions, 138 changer transitions 2/354 dead transitions. [2021-06-10 14:53:34,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 354 transitions, 15582 flow [2021-06-10 14:53:34,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:34,385 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:34,385 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:34,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:34,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:34,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:34,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:34,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:34,385 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:34,385 INFO L185 Difference]: Start difference. First operand has 493 places, 350 transitions, 14894 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:34,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 354 transitions, 15582 flow [2021-06-10 14:53:34,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 354 transitions, 15310 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:34,967 INFO L241 Difference]: Finished difference. Result has 495 places, 348 transitions, 14776 flow [2021-06-10 14:53:34,967 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14630, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14776, PETRI_PLACES=495, PETRI_TRANSITIONS=348} [2021-06-10 14:53:34,967 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 451 predicate places. [2021-06-10 14:53:34,967 INFO L480 AbstractCegarLoop]: Abstraction has has 495 places, 348 transitions, 14776 flow [2021-06-10 14:53:34,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:34,967 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:34,967 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:34,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-10 14:53:34,967 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:34,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:34,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2052707153, now seen corresponding path program 125 times [2021-06-10 14:53:34,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:34,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131153849] [2021-06-10 14:53:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:34,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:34,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:34,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:34,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:34,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:34,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:34,985 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:34,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:34,995 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:34,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:35,009 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:35,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:35,028 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:35,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:35,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131153849] [2021-06-10 14:53:35,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:35,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:35,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038619349] [2021-06-10 14:53:35,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:35,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:35,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:35,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:35,048 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:35,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 348 transitions, 14776 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:35,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:35,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:35,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:35,658 INFO L129 PetriNetUnfolder]: 49/2513 cut-off events. [2021-06-10 14:53:35,658 INFO L130 PetriNetUnfolder]: For 84753/86053 co-relation queries the response was YES. [2021-06-10 14:53:35,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18643 conditions, 2513 events. 49/2513 cut-off events. For 84753/86053 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 36533 event pairs, 49 based on Foata normal form. 20/2448 useless extension candidates. Maximal degree in co-relation 18533. Up to 362 conditions per place. [2021-06-10 14:53:35,676 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 196 selfloop transitions, 134 changer transitions 4/352 dead transitions. [2021-06-10 14:53:35,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 352 transitions, 15460 flow [2021-06-10 14:53:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:35,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:35,677 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:35,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:35,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:35,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:35,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:35,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:35,678 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:35,678 INFO L185 Difference]: Start difference. First operand has 495 places, 348 transitions, 14776 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:35,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 352 transitions, 15460 flow [2021-06-10 14:53:36,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 352 transitions, 15191 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:36,251 INFO L241 Difference]: Finished difference. Result has 497 places, 344 transitions, 14607 flow [2021-06-10 14:53:36,251 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14515, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14607, PETRI_PLACES=497, PETRI_TRANSITIONS=344} [2021-06-10 14:53:36,251 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 453 predicate places. [2021-06-10 14:53:36,251 INFO L480 AbstractCegarLoop]: Abstraction has has 497 places, 344 transitions, 14607 flow [2021-06-10 14:53:36,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:36,252 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:36,252 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:36,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-10 14:53:36,252 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:36,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:36,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1734682003, now seen corresponding path program 126 times [2021-06-10 14:53:36,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:36,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676216169] [2021-06-10 14:53:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:36,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:36,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:36,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:36,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:36,264 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:36,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:36,275 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:36,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:36,285 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:53:36,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:53:36,300 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:53:36,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:53:36,319 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:36,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:36,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676216169] [2021-06-10 14:53:36,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:36,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:36,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749350184] [2021-06-10 14:53:36,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:36,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:36,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:36,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:36,338 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:36,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 344 transitions, 14607 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:36,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:36,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:36,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:36,903 INFO L129 PetriNetUnfolder]: 53/2488 cut-off events. [2021-06-10 14:53:36,903 INFO L130 PetriNetUnfolder]: For 74141/74688 co-relation queries the response was YES. [2021-06-10 14:53:36,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17240 conditions, 2488 events. 53/2488 cut-off events. For 74141/74688 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 36137 event pairs, 17 based on Foata normal form. 18/2417 useless extension candidates. Maximal degree in co-relation 17131. Up to 423 conditions per place. [2021-06-10 14:53:36,920 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 230 selfloop transitions, 158 changer transitions 1/407 dead transitions. [2021-06-10 14:53:36,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 407 transitions, 17636 flow [2021-06-10 14:53:36,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:36,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:36,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:36,921 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:36,921 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:36,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:36,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:36,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:36,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:36,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:36,922 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:36,922 INFO L185 Difference]: Start difference. First operand has 497 places, 344 transitions, 14607 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:36,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 407 transitions, 17636 flow [2021-06-10 14:53:37,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 407 transitions, 17292 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-06-10 14:53:37,443 INFO L241 Difference]: Finished difference. Result has 500 places, 371 transitions, 15853 flow [2021-06-10 14:53:37,443 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=14306, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15853, PETRI_PLACES=500, PETRI_TRANSITIONS=371} [2021-06-10 14:53:37,444 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 456 predicate places. [2021-06-10 14:53:37,444 INFO L480 AbstractCegarLoop]: Abstraction has has 500 places, 371 transitions, 15853 flow [2021-06-10 14:53:37,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:37,444 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:37,444 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:37,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-10 14:53:37,444 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:37,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:37,444 INFO L82 PathProgramCache]: Analyzing trace with hash -311412775, now seen corresponding path program 127 times [2021-06-10 14:53:37,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:37,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867305079] [2021-06-10 14:53:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:37,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:37,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:37,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:37,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:37,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:37,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:37,475 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:37,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:37,493 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:37,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:37,513 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:53:37,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:53:37,532 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:37,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:37,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867305079] [2021-06-10 14:53:37,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:37,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:37,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940803133] [2021-06-10 14:53:37,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:37,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:37,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:37,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:37,550 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:37,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 371 transitions, 15853 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:37,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:37,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:37,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:38,212 INFO L129 PetriNetUnfolder]: 55/2841 cut-off events. [2021-06-10 14:53:38,212 INFO L130 PetriNetUnfolder]: For 85139/85679 co-relation queries the response was YES. [2021-06-10 14:53:38,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19111 conditions, 2841 events. 55/2841 cut-off events. For 85139/85679 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 42315 event pairs, 17 based on Foata normal form. 7/2744 useless extension candidates. Maximal degree in co-relation 18999. Up to 474 conditions per place. [2021-06-10 14:53:38,236 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 298 selfloop transitions, 153 changer transitions 3/472 dead transitions. [2021-06-10 14:53:38,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 472 transitions, 20109 flow [2021-06-10 14:53:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:38,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:38,238 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:38,238 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:38,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:38,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:38,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:38,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:38,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:38,238 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:38,238 INFO L185 Difference]: Start difference. First operand has 500 places, 371 transitions, 15853 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:38,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 472 transitions, 20109 flow [2021-06-10 14:53:38,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 472 transitions, 19736 flow, removed 114 selfloop flow, removed 3 redundant places. [2021-06-10 14:53:38,800 INFO L241 Difference]: Finished difference. Result has 509 places, 395 transitions, 17031 flow [2021-06-10 14:53:38,800 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=15588, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17031, PETRI_PLACES=509, PETRI_TRANSITIONS=395} [2021-06-10 14:53:38,800 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 465 predicate places. [2021-06-10 14:53:38,800 INFO L480 AbstractCegarLoop]: Abstraction has has 509 places, 395 transitions, 17031 flow [2021-06-10 14:53:38,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:38,800 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:38,800 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:38,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-10 14:53:38,801 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:38,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:38,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1886767021, now seen corresponding path program 128 times [2021-06-10 14:53:38,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:38,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514206490] [2021-06-10 14:53:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:38,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:38,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:38,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:38,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:38,813 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:38,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:38,820 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:38,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:38,830 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:38,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:38,843 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:38,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:38,861 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:38,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:38,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514206490] [2021-06-10 14:53:38,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:38,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:38,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482928526] [2021-06-10 14:53:38,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:38,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:38,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:38,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:38,880 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:38,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 395 transitions, 17031 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:38,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:38,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:38,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:39,560 INFO L129 PetriNetUnfolder]: 55/2830 cut-off events. [2021-06-10 14:53:39,561 INFO L130 PetriNetUnfolder]: For 90357/91099 co-relation queries the response was YES. [2021-06-10 14:53:39,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19439 conditions, 2830 events. 55/2830 cut-off events. For 90357/91099 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 42136 event pairs, 21 based on Foata normal form. 22/2752 useless extension candidates. Maximal degree in co-relation 19322. Up to 489 conditions per place. [2021-06-10 14:53:39,581 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 260 selfloop transitions, 151 changer transitions 1/430 dead transitions. [2021-06-10 14:53:39,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 430 transitions, 19126 flow [2021-06-10 14:53:39,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:39,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:39,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:39,582 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:39,582 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:39,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:39,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:39,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:39,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:39,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:39,583 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:39,583 INFO L185 Difference]: Start difference. First operand has 509 places, 395 transitions, 17031 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:39,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 430 transitions, 19126 flow [2021-06-10 14:53:40,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 430 transitions, 18936 flow, removed 23 selfloop flow, removed 4 redundant places. [2021-06-10 14:53:40,224 INFO L241 Difference]: Finished difference. Result has 514 places, 399 transitions, 17426 flow [2021-06-10 14:53:40,224 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=16876, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17426, PETRI_PLACES=514, PETRI_TRANSITIONS=399} [2021-06-10 14:53:40,225 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 470 predicate places. [2021-06-10 14:53:40,225 INFO L480 AbstractCegarLoop]: Abstraction has has 514 places, 399 transitions, 17426 flow [2021-06-10 14:53:40,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:40,225 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:40,225 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:40,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-10 14:53:40,225 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:40,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:40,225 INFO L82 PathProgramCache]: Analyzing trace with hash 693627197, now seen corresponding path program 129 times [2021-06-10 14:53:40,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:40,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440925554] [2021-06-10 14:53:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:40,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:40,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:40,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:40,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:40,237 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:40,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:40,244 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:40,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:40,255 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:53:40,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:53:40,269 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:40,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:40,288 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:40,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:40,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440925554] [2021-06-10 14:53:40,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:40,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:40,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199789316] [2021-06-10 14:53:40,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:40,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:40,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:40,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:40,306 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:40,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 399 transitions, 17426 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:40,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:40,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:40,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:40,997 INFO L129 PetriNetUnfolder]: 55/2824 cut-off events. [2021-06-10 14:53:40,997 INFO L130 PetriNetUnfolder]: For 90607/91338 co-relation queries the response was YES. [2021-06-10 14:53:41,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19490 conditions, 2824 events. 55/2824 cut-off events. For 90607/91338 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 41979 event pairs, 21 based on Foata normal form. 19/2744 useless extension candidates. Maximal degree in co-relation 19372. Up to 489 conditions per place. [2021-06-10 14:53:41,016 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 253 selfloop transitions, 157 changer transitions 1/429 dead transitions. [2021-06-10 14:53:41,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 429 transitions, 19256 flow [2021-06-10 14:53:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:41,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:41,017 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:41,017 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:41,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:41,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:41,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:41,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:41,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:41,018 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:41,018 INFO L185 Difference]: Start difference. First operand has 514 places, 399 transitions, 17426 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:41,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 429 transitions, 19256 flow [2021-06-10 14:53:41,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 429 transitions, 18942 flow, removed 34 selfloop flow, removed 4 redundant places. [2021-06-10 14:53:41,593 INFO L241 Difference]: Finished difference. Result has 517 places, 399 transitions, 17441 flow [2021-06-10 14:53:41,593 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17120, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17441, PETRI_PLACES=517, PETRI_TRANSITIONS=399} [2021-06-10 14:53:41,593 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 473 predicate places. [2021-06-10 14:53:41,593 INFO L480 AbstractCegarLoop]: Abstraction has has 517 places, 399 transitions, 17441 flow [2021-06-10 14:53:41,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:41,593 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:41,593 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:41,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-10 14:53:41,594 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:41,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:41,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1512951303, now seen corresponding path program 130 times [2021-06-10 14:53:41,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:41,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523649082] [2021-06-10 14:53:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:41,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:41,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:41,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:41,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:41,609 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:41,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:41,616 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:41,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:41,625 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:53:41,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:53:41,649 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:53:41,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:53:41,667 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:41,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:41,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523649082] [2021-06-10 14:53:41,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:41,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:41,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284121192] [2021-06-10 14:53:41,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:41,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:41,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:41,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:41,685 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:41,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 399 transitions, 17441 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:41,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:41,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:41,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:42,373 INFO L129 PetriNetUnfolder]: 55/2819 cut-off events. [2021-06-10 14:53:42,373 INFO L130 PetriNetUnfolder]: For 90006/90737 co-relation queries the response was YES. [2021-06-10 14:53:42,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19471 conditions, 2819 events. 55/2819 cut-off events. For 90006/90737 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 41882 event pairs, 21 based on Foata normal form. 13/2733 useless extension candidates. Maximal degree in co-relation 19352. Up to 489 conditions per place. [2021-06-10 14:53:42,395 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 251 selfloop transitions, 157 changer transitions 2/428 dead transitions. [2021-06-10 14:53:42,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 428 transitions, 19229 flow [2021-06-10 14:53:42,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:42,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:42,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:42,396 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:42,396 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:42,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:42,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:42,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:42,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:42,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:42,396 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:42,397 INFO L185 Difference]: Start difference. First operand has 517 places, 399 transitions, 17441 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:42,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 428 transitions, 19229 flow [2021-06-10 14:53:43,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 428 transitions, 18924 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:43,011 INFO L241 Difference]: Finished difference. Result has 520 places, 405 transitions, 17882 flow [2021-06-10 14:53:43,011 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17144, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17882, PETRI_PLACES=520, PETRI_TRANSITIONS=405} [2021-06-10 14:53:43,012 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 476 predicate places. [2021-06-10 14:53:43,012 INFO L480 AbstractCegarLoop]: Abstraction has has 520 places, 405 transitions, 17882 flow [2021-06-10 14:53:43,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:43,012 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:43,012 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:43,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-10 14:53:43,012 INFO L428 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:43,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:43,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2144460847, now seen corresponding path program 131 times [2021-06-10 14:53:43,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:43,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489008881] [2021-06-10 14:53:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:43,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:43,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:43,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:43,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:43,023 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:43,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:43,029 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:43,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:43,039 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:43,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:43,053 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:53:43,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:53:43,071 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:43,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:43,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489008881] [2021-06-10 14:53:43,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:43,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:43,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281120191] [2021-06-10 14:53:43,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:43,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:43,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:43,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:43,089 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:43,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 405 transitions, 17882 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:43,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:43,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:43,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:43,838 INFO L129 PetriNetUnfolder]: 55/2810 cut-off events. [2021-06-10 14:53:43,839 INFO L130 PetriNetUnfolder]: For 91889/92620 co-relation queries the response was YES. [2021-06-10 14:53:43,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19534 conditions, 2810 events. 55/2810 cut-off events. For 91889/92620 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 41723 event pairs, 21 based on Foata normal form. 19/2731 useless extension candidates. Maximal degree in co-relation 19413. Up to 489 conditions per place. [2021-06-10 14:53:43,854 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 257 selfloop transitions, 149 changer transitions 2/426 dead transitions. [2021-06-10 14:53:43,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 426 transitions, 19264 flow [2021-06-10 14:53:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:43,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:43,855 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:43,855 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:43,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:43,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:43,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:43,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:43,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:43,856 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:43,856 INFO L185 Difference]: Start difference. First operand has 520 places, 405 transitions, 17882 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:43,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 426 transitions, 19264 flow [2021-06-10 14:53:44,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 426 transitions, 18913 flow, removed 75 selfloop flow, removed 4 redundant places. [2021-06-10 14:53:44,445 INFO L241 Difference]: Finished difference. Result has 522 places, 403 transitions, 17740 flow [2021-06-10 14:53:44,445 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17545, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17740, PETRI_PLACES=522, PETRI_TRANSITIONS=403} [2021-06-10 14:53:44,446 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 478 predicate places. [2021-06-10 14:53:44,446 INFO L480 AbstractCegarLoop]: Abstraction has has 522 places, 403 transitions, 17740 flow [2021-06-10 14:53:44,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:44,446 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:44,446 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:44,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-10 14:53:44,446 INFO L428 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:44,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1353236305, now seen corresponding path program 132 times [2021-06-10 14:53:44,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:44,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557245332] [2021-06-10 14:53:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:44,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:44,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:44,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:44,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:44,458 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:44,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:44,465 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:44,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:44,475 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:44,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:44,488 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:44,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:44,506 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:44,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:44,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557245332] [2021-06-10 14:53:44,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:44,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:44,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894180936] [2021-06-10 14:53:44,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:44,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:44,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:44,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:44,524 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:44,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 403 transitions, 17740 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:44,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:44,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:44,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:45,225 INFO L129 PetriNetUnfolder]: 55/2802 cut-off events. [2021-06-10 14:53:45,225 INFO L130 PetriNetUnfolder]: For 88141/88887 co-relation queries the response was YES. [2021-06-10 14:53:45,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19340 conditions, 2802 events. 55/2802 cut-off events. For 88141/88887 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 41630 event pairs, 21 based on Foata normal form. 25/2730 useless extension candidates. Maximal degree in co-relation 19220. Up to 489 conditions per place. [2021-06-10 14:53:45,246 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 258 selfloop transitions, 147 changer transitions 1/424 dead transitions. [2021-06-10 14:53:45,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 424 transitions, 19112 flow [2021-06-10 14:53:45,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:45,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:45,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:45,247 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:45,247 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:45,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:45,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:45,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:45,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:45,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:45,248 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:45,248 INFO L185 Difference]: Start difference. First operand has 522 places, 403 transitions, 17740 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:45,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 424 transitions, 19112 flow [2021-06-10 14:53:45,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 424 transitions, 18820 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:45,870 INFO L241 Difference]: Finished difference. Result has 524 places, 405 transitions, 17852 flow [2021-06-10 14:53:45,870 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17456, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17852, PETRI_PLACES=524, PETRI_TRANSITIONS=405} [2021-06-10 14:53:45,870 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 480 predicate places. [2021-06-10 14:53:45,870 INFO L480 AbstractCegarLoop]: Abstraction has has 524 places, 405 transitions, 17852 flow [2021-06-10 14:53:45,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:45,870 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:45,870 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:45,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-10 14:53:45,870 INFO L428 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:45,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:45,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1155781501, now seen corresponding path program 133 times [2021-06-10 14:53:45,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:45,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322967346] [2021-06-10 14:53:45,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:45,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:45,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:45,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:45,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:45,883 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:45,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:45,889 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:53:45,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:53:45,899 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:45,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:45,913 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:45,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:45,931 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:45,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:45,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322967346] [2021-06-10 14:53:45,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:45,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:45,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646391804] [2021-06-10 14:53:45,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:45,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:45,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:45,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:45,949 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:45,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 405 transitions, 17852 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:45,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:45,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:45,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:46,646 INFO L129 PetriNetUnfolder]: 55/2796 cut-off events. [2021-06-10 14:53:46,646 INFO L130 PetriNetUnfolder]: For 89263/90111 co-relation queries the response was YES. [2021-06-10 14:53:46,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19348 conditions, 2796 events. 55/2796 cut-off events. For 89263/90111 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 41491 event pairs, 45 based on Foata normal form. 29/2729 useless extension candidates. Maximal degree in co-relation 19227. Up to 489 conditions per place. [2021-06-10 14:53:46,668 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 257 selfloop transitions, 147 changer transitions 1/423 dead transitions. [2021-06-10 14:53:46,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 423 transitions, 19102 flow [2021-06-10 14:53:46,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:46,669 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:46,669 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:46,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:46,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:46,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:46,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:46,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:46,670 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:46,670 INFO L185 Difference]: Start difference. First operand has 524 places, 405 transitions, 17852 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:46,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 423 transitions, 19102 flow [2021-06-10 14:53:47,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 423 transitions, 18827 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-06-10 14:53:47,297 INFO L241 Difference]: Finished difference. Result has 526 places, 404 transitions, 17819 flow [2021-06-10 14:53:47,297 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17585, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17819, PETRI_PLACES=526, PETRI_TRANSITIONS=404} [2021-06-10 14:53:47,297 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 482 predicate places. [2021-06-10 14:53:47,297 INFO L480 AbstractCegarLoop]: Abstraction has has 526 places, 404 transitions, 17819 flow [2021-06-10 14:53:47,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:47,297 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:47,297 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:47,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-10 14:53:47,297 INFO L428 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:47,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:47,298 INFO L82 PathProgramCache]: Analyzing trace with hash -2116395393, now seen corresponding path program 134 times [2021-06-10 14:53:47,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:47,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500863839] [2021-06-10 14:53:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:47,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:47,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:47,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:47,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:47,314 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:47,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:47,321 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:47,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:47,331 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:53:47,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:53:47,353 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:47,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:47,370 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:47,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:47,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500863839] [2021-06-10 14:53:47,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:47,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:47,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039401101] [2021-06-10 14:53:47,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:47,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:47,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:47,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:47,388 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:47,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 404 transitions, 17819 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:47,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:47,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:47,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:48,061 INFO L129 PetriNetUnfolder]: 55/2791 cut-off events. [2021-06-10 14:53:48,061 INFO L130 PetriNetUnfolder]: For 88451/89306 co-relation queries the response was YES. [2021-06-10 14:53:48,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19340 conditions, 2791 events. 55/2791 cut-off events. For 88451/89306 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 41424 event pairs, 21 based on Foata normal form. 22/2717 useless extension candidates. Maximal degree in co-relation 19219. Up to 489 conditions per place. [2021-06-10 14:53:48,082 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 250 selfloop transitions, 152 changer transitions 2/422 dead transitions. [2021-06-10 14:53:48,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 422 transitions, 19067 flow [2021-06-10 14:53:48,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:48,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:48,083 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:48,083 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:48,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:48,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:48,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:48,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:48,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:48,084 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:48,084 INFO L185 Difference]: Start difference. First operand has 526 places, 404 transitions, 17819 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:48,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 422 transitions, 19067 flow [2021-06-10 14:53:48,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 422 transitions, 18777 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:48,698 INFO L241 Difference]: Finished difference. Result has 528 places, 403 transitions, 17800 flow [2021-06-10 14:53:48,698 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17537, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17800, PETRI_PLACES=528, PETRI_TRANSITIONS=403} [2021-06-10 14:53:48,698 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 484 predicate places. [2021-06-10 14:53:48,699 INFO L480 AbstractCegarLoop]: Abstraction has has 528 places, 403 transitions, 17800 flow [2021-06-10 14:53:48,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:48,699 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:48,699 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:48,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-10 14:53:48,699 INFO L428 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:48,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:48,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1929722733, now seen corresponding path program 135 times [2021-06-10 14:53:48,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:48,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073542098] [2021-06-10 14:53:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:48,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:48,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:48,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:48,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:48,710 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:48,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:48,717 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:48,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:48,727 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:53:48,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:53:48,741 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:53:48,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:53:48,759 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:48,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:48,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073542098] [2021-06-10 14:53:48,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:48,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:48,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030537161] [2021-06-10 14:53:48,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:48,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:48,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:48,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:48,777 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:48,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 403 transitions, 17800 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:48,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:48,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:48,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:49,453 INFO L129 PetriNetUnfolder]: 55/2782 cut-off events. [2021-06-10 14:53:49,453 INFO L130 PetriNetUnfolder]: For 88458/89298 co-relation queries the response was YES. [2021-06-10 14:53:49,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19305 conditions, 2782 events. 55/2782 cut-off events. For 88458/89298 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 41206 event pairs, 21 based on Foata normal form. 16/2702 useless extension candidates. Maximal degree in co-relation 19183. Up to 489 conditions per place. [2021-06-10 14:53:49,474 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 243 selfloop transitions, 158 changer transitions 1/420 dead transitions. [2021-06-10 14:53:49,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 420 transitions, 19005 flow [2021-06-10 14:53:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:49,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:49,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:49,475 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:49,475 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:49,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:49,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:49,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:49,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:49,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:49,476 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:49,476 INFO L185 Difference]: Start difference. First operand has 528 places, 403 transitions, 17800 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:49,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 420 transitions, 19005 flow [2021-06-10 14:53:50,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 420 transitions, 18703 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:50,082 INFO L241 Difference]: Finished difference. Result has 529 places, 402 transitions, 17766 flow [2021-06-10 14:53:50,082 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17506, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17766, PETRI_PLACES=529, PETRI_TRANSITIONS=402} [2021-06-10 14:53:50,082 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 485 predicate places. [2021-06-10 14:53:50,082 INFO L480 AbstractCegarLoop]: Abstraction has has 529 places, 402 transitions, 17766 flow [2021-06-10 14:53:50,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:50,082 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:50,082 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:50,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-10 14:53:50,082 INFO L428 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:50,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:50,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1069296749, now seen corresponding path program 136 times [2021-06-10 14:53:50,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:50,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996670492] [2021-06-10 14:53:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:50,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:50,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:50,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:50,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:50,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:50,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:50,101 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:50,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:50,111 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:53:50,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:53:50,125 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:50,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:50,143 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:50,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:50,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996670492] [2021-06-10 14:53:50,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:50,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:50,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725302046] [2021-06-10 14:53:50,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:50,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:50,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:50,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:50,161 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:50,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 402 transitions, 17766 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:50,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:50,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:50,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:50,886 INFO L129 PetriNetUnfolder]: 55/2778 cut-off events. [2021-06-10 14:53:50,886 INFO L130 PetriNetUnfolder]: For 88363/89203 co-relation queries the response was YES. [2021-06-10 14:53:50,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19285 conditions, 2778 events. 55/2778 cut-off events. For 88363/89203 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 41150 event pairs, 21 based on Foata normal form. 16/2698 useless extension candidates. Maximal degree in co-relation 19163. Up to 489 conditions per place. [2021-06-10 14:53:50,904 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 244 selfloop transitions, 156 changer transitions 1/419 dead transitions. [2021-06-10 14:53:50,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 419 transitions, 18969 flow [2021-06-10 14:53:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:50,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:50,905 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:50,905 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:50,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:50,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:50,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:50,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:50,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:50,906 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:50,906 INFO L185 Difference]: Start difference. First operand has 529 places, 402 transitions, 17766 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:50,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 419 transitions, 18969 flow [2021-06-10 14:53:51,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 419 transitions, 18712 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 14:53:51,501 INFO L241 Difference]: Finished difference. Result has 531 places, 401 transitions, 17767 flow [2021-06-10 14:53:51,501 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17517, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17767, PETRI_PLACES=531, PETRI_TRANSITIONS=401} [2021-06-10 14:53:51,501 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 487 predicate places. [2021-06-10 14:53:51,501 INFO L480 AbstractCegarLoop]: Abstraction has has 531 places, 401 transitions, 17767 flow [2021-06-10 14:53:51,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:51,502 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:51,502 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:51,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-10 14:53:51,502 INFO L428 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:51,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:51,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1100361865, now seen corresponding path program 137 times [2021-06-10 14:53:51,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:51,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708187126] [2021-06-10 14:53:51,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:51,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:51,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:51,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:51,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:51,513 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:51,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:51,520 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:51,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:51,529 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:51,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:51,541 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:51,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:51,559 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:51,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:51,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708187126] [2021-06-10 14:53:51,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:51,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:51,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592339155] [2021-06-10 14:53:51,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:51,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:51,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:51,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:51,577 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:51,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 401 transitions, 17767 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:51,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:51,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:51,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:52,288 INFO L129 PetriNetUnfolder]: 55/2773 cut-off events. [2021-06-10 14:53:52,288 INFO L130 PetriNetUnfolder]: For 88475/89330 co-relation queries the response was YES. [2021-06-10 14:53:52,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19320 conditions, 2773 events. 55/2773 cut-off events. For 88475/89330 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 41065 event pairs, 21 based on Foata normal form. 22/2700 useless extension candidates. Maximal degree in co-relation 19198. Up to 489 conditions per place. [2021-06-10 14:53:52,310 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 249 selfloop transitions, 150 changer transitions 1/418 dead transitions. [2021-06-10 14:53:52,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 418 transitions, 18968 flow [2021-06-10 14:53:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:52,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:52,311 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:52,311 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:52,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:52,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:52,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:52,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:52,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:52,311 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:52,311 INFO L185 Difference]: Start difference. First operand has 531 places, 401 transitions, 17767 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:52,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 418 transitions, 18968 flow [2021-06-10 14:53:52,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 418 transitions, 18666 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:52,950 INFO L241 Difference]: Finished difference. Result has 533 places, 403 transitions, 17864 flow [2021-06-10 14:53:52,950 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17473, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17864, PETRI_PLACES=533, PETRI_TRANSITIONS=403} [2021-06-10 14:53:52,950 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 489 predicate places. [2021-06-10 14:53:52,950 INFO L480 AbstractCegarLoop]: Abstraction has has 533 places, 403 transitions, 17864 flow [2021-06-10 14:53:52,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:52,950 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:52,950 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:52,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-10 14:53:52,951 INFO L428 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:52,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:52,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1404911827, now seen corresponding path program 138 times [2021-06-10 14:53:52,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:52,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975766044] [2021-06-10 14:53:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:52,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:52,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:52,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:52,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:52,963 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:52,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:52,969 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:52,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:52,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:53:52,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:53:52,992 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:52,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:53,010 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:53,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:53,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:53,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975766044] [2021-06-10 14:53:53,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:53,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:53,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082211731] [2021-06-10 14:53:53,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:53,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:53,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:53,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:53,029 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:53,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 403 transitions, 17864 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:53,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:53,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:53,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:53,737 INFO L129 PetriNetUnfolder]: 55/2766 cut-off events. [2021-06-10 14:53:53,737 INFO L130 PetriNetUnfolder]: For 89236/90091 co-relation queries the response was YES. [2021-06-10 14:53:53,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19327 conditions, 2766 events. 55/2766 cut-off events. For 89236/90091 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 41023 event pairs, 21 based on Foata normal form. 22/2693 useless extension candidates. Maximal degree in co-relation 19204. Up to 489 conditions per place. [2021-06-10 14:53:53,758 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 248 selfloop transitions, 150 changer transitions 1/417 dead transitions. [2021-06-10 14:53:53,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 417 transitions, 18958 flow [2021-06-10 14:53:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:53,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:53,759 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:53,759 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:53,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:53,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:53,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:53,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:53,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:53,760 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:53,760 INFO L185 Difference]: Start difference. First operand has 533 places, 403 transitions, 17864 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:53,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 417 transitions, 18958 flow [2021-06-10 14:53:54,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 417 transitions, 18689 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-06-10 14:53:54,402 INFO L241 Difference]: Finished difference. Result has 535 places, 402 transitions, 17841 flow [2021-06-10 14:53:54,402 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17603, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17841, PETRI_PLACES=535, PETRI_TRANSITIONS=402} [2021-06-10 14:53:54,402 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 491 predicate places. [2021-06-10 14:53:54,402 INFO L480 AbstractCegarLoop]: Abstraction has has 535 places, 402 transitions, 17841 flow [2021-06-10 14:53:54,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:54,403 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:54,403 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:54,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-10 14:53:54,403 INFO L428 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:54,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:54,403 INFO L82 PathProgramCache]: Analyzing trace with hash 345526651, now seen corresponding path program 139 times [2021-06-10 14:53:54,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:54,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505294962] [2021-06-10 14:53:54,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:54,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:54,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:54,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:54,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:54,414 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:54,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:54,420 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:54,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:54,430 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:53:54,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:53:54,454 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:53:54,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:53:54,473 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:54,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:54,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505294962] [2021-06-10 14:53:54,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:54,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:54,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153372245] [2021-06-10 14:53:54,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:54,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:54,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:54,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:54,491 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:54,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 402 transitions, 17841 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:54,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:54,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:54,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:55,180 INFO L129 PetriNetUnfolder]: 55/2761 cut-off events. [2021-06-10 14:53:55,180 INFO L130 PetriNetUnfolder]: For 88829/89669 co-relation queries the response was YES. [2021-06-10 14:53:55,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19347 conditions, 2761 events. 55/2761 cut-off events. For 88829/89669 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 40897 event pairs, 21 based on Foata normal form. 16/2682 useless extension candidates. Maximal degree in co-relation 19224. Up to 489 conditions per place. [2021-06-10 14:53:55,202 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 255 selfloop transitions, 141 changer transitions 2/416 dead transitions. [2021-06-10 14:53:55,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 416 transitions, 18933 flow [2021-06-10 14:53:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:55,203 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:55,203 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:55,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:55,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:55,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:55,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:55,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:55,204 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:55,204 INFO L185 Difference]: Start difference. First operand has 535 places, 402 transitions, 17841 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:55,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 416 transitions, 18933 flow [2021-06-10 14:53:55,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 416 transitions, 18638 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:53:55,864 INFO L241 Difference]: Finished difference. Result has 537 places, 402 transitions, 17870 flow [2021-06-10 14:53:55,864 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17554, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17870, PETRI_PLACES=537, PETRI_TRANSITIONS=402} [2021-06-10 14:53:55,865 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 493 predicate places. [2021-06-10 14:53:55,865 INFO L480 AbstractCegarLoop]: Abstraction has has 537 places, 402 transitions, 17870 flow [2021-06-10 14:53:55,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:55,865 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:55,865 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:55,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-10 14:53:55,865 INFO L428 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:55,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:55,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1364968881, now seen corresponding path program 140 times [2021-06-10 14:53:55,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:55,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577150815] [2021-06-10 14:53:55,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:55,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:55,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:55,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:55,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:55,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:55,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:55,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:55,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:53:55,895 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:53:55,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:53:55,916 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:55,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:55,935 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:55,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:55,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:55,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577150815] [2021-06-10 14:53:55,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:55,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:55,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997358691] [2021-06-10 14:53:55,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:55,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:55,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:55,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:55,954 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:55,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 402 transitions, 17870 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:55,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:55,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:55,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:56,741 INFO L129 PetriNetUnfolder]: 52/3133 cut-off events. [2021-06-10 14:53:56,741 INFO L130 PetriNetUnfolder]: For 99257/100119 co-relation queries the response was YES. [2021-06-10 14:53:56,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21303 conditions, 3133 events. 52/3133 cut-off events. For 99257/100119 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 47365 event pairs, 13 based on Foata normal form. 3/3034 useless extension candidates. Maximal degree in co-relation 21179. Up to 506 conditions per place. [2021-06-10 14:53:56,765 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 322 selfloop transitions, 176 changer transitions 4/520 dead transitions. [2021-06-10 14:53:56,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 520 transitions, 23261 flow [2021-06-10 14:53:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:56,767 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:56,767 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:56,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:56,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:56,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:56,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:56,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:56,767 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:56,767 INFO L185 Difference]: Start difference. First operand has 537 places, 402 transitions, 17870 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:56,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 520 transitions, 23261 flow [2021-06-10 14:53:57,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 520 transitions, 22893 flow, removed 41 selfloop flow, removed 3 redundant places. [2021-06-10 14:53:57,520 INFO L241 Difference]: Finished difference. Result has 545 places, 445 transitions, 19975 flow [2021-06-10 14:53:57,520 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=17651, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19975, PETRI_PLACES=545, PETRI_TRANSITIONS=445} [2021-06-10 14:53:57,520 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 501 predicate places. [2021-06-10 14:53:57,520 INFO L480 AbstractCegarLoop]: Abstraction has has 545 places, 445 transitions, 19975 flow [2021-06-10 14:53:57,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:57,520 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:57,520 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:57,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-10 14:53:57,520 INFO L428 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:57,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:57,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1357452043, now seen corresponding path program 141 times [2021-06-10 14:53:57,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:57,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641104728] [2021-06-10 14:53:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:57,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:57,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:57,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:57,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:57,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:57,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:53:57,543 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:57,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:57,559 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:53:57,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:53:57,573 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:53:57,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:53:57,591 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:57,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:57,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641104728] [2021-06-10 14:53:57,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:57,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:57,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054622169] [2021-06-10 14:53:57,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:57,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:57,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:57,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:57,609 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:57,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 445 transitions, 19975 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:57,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:57,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:57,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:53:58,458 INFO L129 PetriNetUnfolder]: 56/3369 cut-off events. [2021-06-10 14:53:58,458 INFO L130 PetriNetUnfolder]: For 109143/110121 co-relation queries the response was YES. [2021-06-10 14:53:58,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22994 conditions, 3369 events. 56/3369 cut-off events. For 109143/110121 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 51755 event pairs, 17 based on Foata normal form. 17/3279 useless extension candidates. Maximal degree in co-relation 22865. Up to 564 conditions per place. [2021-06-10 14:53:58,485 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 288 selfloop transitions, 223 changer transitions 4/533 dead transitions. [2021-06-10 14:53:58,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 533 transitions, 24156 flow [2021-06-10 14:53:58,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:53:58,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:53:58,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:53:58,486 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:53:58,486 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:53:58,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:53:58,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:53:58,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:53:58,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:58,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:58,487 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:58,487 INFO L185 Difference]: Start difference. First operand has 545 places, 445 transitions, 19975 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:53:58,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 533 transitions, 24156 flow [2021-06-10 14:53:59,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 533 transitions, 24033 flow, removed 21 selfloop flow, removed 3 redundant places. [2021-06-10 14:53:59,272 INFO L241 Difference]: Finished difference. Result has 554 places, 463 transitions, 21346 flow [2021-06-10 14:53:59,272 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=19891, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21346, PETRI_PLACES=554, PETRI_TRANSITIONS=463} [2021-06-10 14:53:59,272 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 510 predicate places. [2021-06-10 14:53:59,272 INFO L480 AbstractCegarLoop]: Abstraction has has 554 places, 463 transitions, 21346 flow [2021-06-10 14:53:59,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:59,272 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:53:59,272 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:53:59,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-10 14:53:59,273 INFO L428 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:53:59,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:53:59,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1851084939, now seen corresponding path program 142 times [2021-06-10 14:53:59,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:53:59,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354446024] [2021-06-10 14:53:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:53:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:53:59,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:59,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:53:59,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:53:59,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:53:59,284 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:53:59,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:53:59,290 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:53:59,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:53:59,300 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:53:59,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:53:59,313 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:53:59,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:53:59,331 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:53:59,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:53:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:53:59,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354446024] [2021-06-10 14:53:59,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:53:59,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:53:59,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761454443] [2021-06-10 14:53:59,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:53:59,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:53:59,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:53:59,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:53:59,349 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:53:59,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 463 transitions, 21346 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:53:59,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:53:59,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:53:59,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:00,291 INFO L129 PetriNetUnfolder]: 56/3365 cut-off events. [2021-06-10 14:54:00,291 INFO L130 PetriNetUnfolder]: For 117353/117824 co-relation queries the response was YES. [2021-06-10 14:54:00,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23514 conditions, 3365 events. 56/3365 cut-off events. For 117353/117824 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 51772 event pairs, 38 based on Foata normal form. 21/3285 useless extension candidates. Maximal degree in co-relation 23381. Up to 550 conditions per place. [2021-06-10 14:54:00,319 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 289 selfloop transitions, 168 changer transitions 1/476 dead transitions. [2021-06-10 14:54:00,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 476 transitions, 22512 flow [2021-06-10 14:54:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:00,320 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:00,320 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:00,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:00,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:00,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:00,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:00,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:00,321 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:00,321 INFO L185 Difference]: Start difference. First operand has 554 places, 463 transitions, 21346 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:00,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 476 transitions, 22512 flow [2021-06-10 14:54:01,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 476 transitions, 22214 flow, removed 38 selfloop flow, removed 4 redundant places. [2021-06-10 14:54:01,200 INFO L241 Difference]: Finished difference. Result has 558 places, 464 transitions, 21428 flow [2021-06-10 14:54:01,200 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=21060, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21428, PETRI_PLACES=558, PETRI_TRANSITIONS=464} [2021-06-10 14:54:01,200 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 514 predicate places. [2021-06-10 14:54:01,200 INFO L480 AbstractCegarLoop]: Abstraction has has 558 places, 464 transitions, 21428 flow [2021-06-10 14:54:01,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:01,200 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:01,200 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:01,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-10 14:54:01,201 INFO L428 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:01,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:01,201 INFO L82 PathProgramCache]: Analyzing trace with hash -314826545, now seen corresponding path program 143 times [2021-06-10 14:54:01,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:01,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211511657] [2021-06-10 14:54:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:01,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:01,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:01,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:01,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:01,218 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:01,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:01,225 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:01,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:01,235 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:01,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:01,249 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:54:01,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:54:01,268 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:01,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:01,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211511657] [2021-06-10 14:54:01,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:01,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:01,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064203464] [2021-06-10 14:54:01,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:01,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:01,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:01,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:01,286 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:01,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 464 transitions, 21428 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:01,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:01,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:01,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:02,237 INFO L129 PetriNetUnfolder]: 56/3359 cut-off events. [2021-06-10 14:54:02,237 INFO L130 PetriNetUnfolder]: For 117659/118340 co-relation queries the response was YES. [2021-06-10 14:54:02,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23515 conditions, 3359 events. 56/3359 cut-off events. For 117659/118340 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 51546 event pairs, 38 based on Foata normal form. 20/3276 useless extension candidates. Maximal degree in co-relation 23381. Up to 550 conditions per place. [2021-06-10 14:54:02,266 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 281 selfloop transitions, 174 changer transitions 2/475 dead transitions. [2021-06-10 14:54:02,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 475 transitions, 22518 flow [2021-06-10 14:54:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:02,267 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:02,267 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:02,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:02,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:02,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:02,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:02,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:02,268 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:02,268 INFO L185 Difference]: Start difference. First operand has 558 places, 464 transitions, 21428 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:02,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 475 transitions, 22518 flow [2021-06-10 14:54:03,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 475 transitions, 22039 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-06-10 14:54:03,184 INFO L241 Difference]: Finished difference. Result has 558 places, 462 transitions, 21187 flow [2021-06-10 14:54:03,185 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=20957, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21187, PETRI_PLACES=558, PETRI_TRANSITIONS=462} [2021-06-10 14:54:03,185 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 514 predicate places. [2021-06-10 14:54:03,185 INFO L480 AbstractCegarLoop]: Abstraction has has 558 places, 462 transitions, 21187 flow [2021-06-10 14:54:03,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:03,185 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:03,185 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:03,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-10 14:54:03,185 INFO L428 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:03,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:03,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1389188421, now seen corresponding path program 144 times [2021-06-10 14:54:03,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:03,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149219653] [2021-06-10 14:54:03,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:03,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:03,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:03,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:03,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:03,197 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:03,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:03,204 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:03,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:03,213 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:03,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:03,227 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:03,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:03,245 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:03,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:03,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:03,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149219653] [2021-06-10 14:54:03,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:03,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:03,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067746686] [2021-06-10 14:54:03,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:03,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:03,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:03,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:03,273 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:03,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 462 transitions, 21187 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:03,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:03,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:03,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:04,209 INFO L129 PetriNetUnfolder]: 56/3351 cut-off events. [2021-06-10 14:54:04,210 INFO L130 PetriNetUnfolder]: For 115294/115975 co-relation queries the response was YES. [2021-06-10 14:54:04,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23365 conditions, 3351 events. 56/3351 cut-off events. For 115294/115975 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 51369 event pairs, 38 based on Foata normal form. 20/3269 useless extension candidates. Maximal degree in co-relation 23231. Up to 550 conditions per place. [2021-06-10 14:54:04,296 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 288 selfloop transitions, 166 changer transitions 1/473 dead transitions. [2021-06-10 14:54:04,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 473 transitions, 22273 flow [2021-06-10 14:54:04,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:04,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:04,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:04,297 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:04,297 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:04,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:04,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:04,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:04,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:04,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:04,298 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:04,298 INFO L185 Difference]: Start difference. First operand has 558 places, 462 transitions, 21187 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:04,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 473 transitions, 22273 flow [2021-06-10 14:54:05,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 473 transitions, 21968 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 14:54:05,088 INFO L241 Difference]: Finished difference. Result has 560 places, 461 transitions, 21160 flow [2021-06-10 14:54:05,089 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=20890, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21160, PETRI_PLACES=560, PETRI_TRANSITIONS=461} [2021-06-10 14:54:05,089 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 516 predicate places. [2021-06-10 14:54:05,089 INFO L480 AbstractCegarLoop]: Abstraction has has 560 places, 461 transitions, 21160 flow [2021-06-10 14:54:05,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:05,089 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:05,089 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:05,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-10 14:54:05,089 INFO L428 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:05,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:05,089 INFO L82 PathProgramCache]: Analyzing trace with hash -698225679, now seen corresponding path program 145 times [2021-06-10 14:54:05,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:05,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380691222] [2021-06-10 14:54:05,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:05,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:05,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:05,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:05,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:05,104 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:05,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:05,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:05,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:05,119 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:05,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:05,132 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:05,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:05,149 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:05,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:05,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380691222] [2021-06-10 14:54:05,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:05,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:05,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146428837] [2021-06-10 14:54:05,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:05,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:05,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:05,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:05,174 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:05,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 461 transitions, 21160 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:05,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:05,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:05,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:06,131 INFO L129 PetriNetUnfolder]: 56/3344 cut-off events. [2021-06-10 14:54:06,131 INFO L130 PetriNetUnfolder]: For 115298/115995 co-relation queries the response was YES. [2021-06-10 14:54:06,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23404 conditions, 3344 events. 56/3344 cut-off events. For 115298/115995 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 51409 event pairs, 38 based on Foata normal form. 26/3268 useless extension candidates. Maximal degree in co-relation 23270. Up to 550 conditions per place. [2021-06-10 14:54:06,159 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 282 selfloop transitions, 171 changer transitions 1/472 dead transitions. [2021-06-10 14:54:06,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 472 transitions, 22244 flow [2021-06-10 14:54:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:06,160 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:06,161 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:06,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:06,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:06,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:06,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:06,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:06,161 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:06,161 INFO L185 Difference]: Start difference. First operand has 560 places, 461 transitions, 21160 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:06,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 472 transitions, 22244 flow [2021-06-10 14:54:07,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 472 transitions, 21915 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:54:07,020 INFO L241 Difference]: Finished difference. Result has 561 places, 460 transitions, 21109 flow [2021-06-10 14:54:07,020 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=20839, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21109, PETRI_PLACES=561, PETRI_TRANSITIONS=460} [2021-06-10 14:54:07,020 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 517 predicate places. [2021-06-10 14:54:07,020 INFO L480 AbstractCegarLoop]: Abstraction has has 561 places, 460 transitions, 21109 flow [2021-06-10 14:54:07,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:07,020 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:07,020 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:07,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-10 14:54:07,021 INFO L428 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:07,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:07,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1706836751, now seen corresponding path program 146 times [2021-06-10 14:54:07,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:07,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584372358] [2021-06-10 14:54:07,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:07,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:07,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:07,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:07,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:07,031 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:07,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:07,038 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:07,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:07,048 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:54:07,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:54:07,084 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:07,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:07,103 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:07,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:07,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584372358] [2021-06-10 14:54:07,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:07,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:07,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21681865] [2021-06-10 14:54:07,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:07,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:07,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:07,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:07,121 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:07,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 460 transitions, 21109 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:07,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:07,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:07,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:08,095 INFO L129 PetriNetUnfolder]: 56/3338 cut-off events. [2021-06-10 14:54:08,095 INFO L130 PetriNetUnfolder]: For 115048/115745 co-relation queries the response was YES. [2021-06-10 14:54:08,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23376 conditions, 3338 events. 56/3338 cut-off events. For 115048/115745 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 51323 event pairs, 38 based on Foata normal form. 26/3262 useless extension candidates. Maximal degree in co-relation 23242. Up to 550 conditions per place. [2021-06-10 14:54:08,119 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 282 selfloop transitions, 169 changer transitions 2/471 dead transitions. [2021-06-10 14:54:08,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 471 transitions, 22191 flow [2021-06-10 14:54:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:08,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:08,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:08,120 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:08,120 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:08,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:08,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:08,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:08,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:08,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:08,121 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:08,121 INFO L185 Difference]: Start difference. First operand has 561 places, 460 transitions, 21109 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:08,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 471 transitions, 22191 flow [2021-06-10 14:54:08,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 471 transitions, 21855 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:54:08,923 INFO L241 Difference]: Finished difference. Result has 562 places, 458 transitions, 21007 flow [2021-06-10 14:54:08,923 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=20781, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21007, PETRI_PLACES=562, PETRI_TRANSITIONS=458} [2021-06-10 14:54:08,923 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 518 predicate places. [2021-06-10 14:54:08,923 INFO L480 AbstractCegarLoop]: Abstraction has has 562 places, 458 transitions, 21007 flow [2021-06-10 14:54:08,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:08,924 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:08,924 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:08,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-10 14:54:08,924 INFO L428 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:08,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:08,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1968838611, now seen corresponding path program 147 times [2021-06-10 14:54:08,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:08,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912486708] [2021-06-10 14:54:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:08,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:08,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:08,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:08,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:08,935 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:08,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:08,943 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:08,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:08,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:54:08,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:54:08,964 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:08,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:08,981 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:08,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:09,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912486708] [2021-06-10 14:54:09,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:09,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:09,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344628918] [2021-06-10 14:54:09,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:09,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:09,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:09,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:09,004 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:09,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 458 transitions, 21007 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:09,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:09,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:09,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:09,920 INFO L129 PetriNetUnfolder]: 56/3329 cut-off events. [2021-06-10 14:54:09,921 INFO L130 PetriNetUnfolder]: For 114643/115324 co-relation queries the response was YES. [2021-06-10 14:54:09,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23315 conditions, 3329 events. 56/3329 cut-off events. For 114643/115324 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 51006 event pairs, 38 based on Foata normal form. 20/3247 useless extension candidates. Maximal degree in co-relation 23181. Up to 550 conditions per place. [2021-06-10 14:54:09,949 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 280 selfloop transitions, 170 changer transitions 1/469 dead transitions. [2021-06-10 14:54:09,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 469 transitions, 22085 flow [2021-06-10 14:54:09,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:09,950 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:09,950 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:09,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:09,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:09,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:09,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:09,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:09,950 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:09,951 INFO L185 Difference]: Start difference. First operand has 562 places, 458 transitions, 21007 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:09,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 469 transitions, 22085 flow [2021-06-10 14:54:10,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 469 transitions, 21751 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:54:10,799 INFO L241 Difference]: Finished difference. Result has 564 places, 459 transitions, 21070 flow [2021-06-10 14:54:10,799 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=20681, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21070, PETRI_PLACES=564, PETRI_TRANSITIONS=459} [2021-06-10 14:54:10,800 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 520 predicate places. [2021-06-10 14:54:10,800 INFO L480 AbstractCegarLoop]: Abstraction has has 564 places, 459 transitions, 21070 flow [2021-06-10 14:54:10,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:10,800 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:10,800 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:10,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-10 14:54:10,800 INFO L428 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:10,800 INFO L82 PathProgramCache]: Analyzing trace with hash 2057959745, now seen corresponding path program 148 times [2021-06-10 14:54:10,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:10,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389009015] [2021-06-10 14:54:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:10,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:10,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:10,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:10,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:10,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:10,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:10,817 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:10,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:10,826 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:54:10,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:54:10,838 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:10,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:10,860 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:10,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:10,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389009015] [2021-06-10 14:54:10,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:10,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:10,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783322226] [2021-06-10 14:54:10,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:10,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:10,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:10,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:10,878 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:10,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 459 transitions, 21070 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:10,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:10,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:10,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:11,815 INFO L129 PetriNetUnfolder]: 56/3322 cut-off events. [2021-06-10 14:54:11,815 INFO L130 PetriNetUnfolder]: For 116043/116918 co-relation queries the response was YES. [2021-06-10 14:54:11,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23379 conditions, 3322 events. 56/3322 cut-off events. For 116043/116918 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 50844 event pairs, 38 based on Foata normal form. 26/3246 useless extension candidates. Maximal degree in co-relation 23244. Up to 550 conditions per place. [2021-06-10 14:54:11,840 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 280 selfloop transitions, 169 changer transitions 1/468 dead transitions. [2021-06-10 14:54:11,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 468 transitions, 22084 flow [2021-06-10 14:54:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:11,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:11,841 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:11,841 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:11,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:11,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:11,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:11,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:11,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:11,842 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:11,842 INFO L185 Difference]: Start difference. First operand has 564 places, 459 transitions, 21070 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:11,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 468 transitions, 22084 flow [2021-06-10 14:54:12,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 468 transitions, 21816 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-06-10 14:54:12,657 INFO L241 Difference]: Finished difference. Result has 567 places, 458 transitions, 21082 flow [2021-06-10 14:54:12,657 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=20810, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21082, PETRI_PLACES=567, PETRI_TRANSITIONS=458} [2021-06-10 14:54:12,657 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 523 predicate places. [2021-06-10 14:54:12,657 INFO L480 AbstractCegarLoop]: Abstraction has has 567 places, 458 transitions, 21082 flow [2021-06-10 14:54:12,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:12,658 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:12,658 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:12,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-10 14:54:12,658 INFO L428 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:12,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:12,658 INFO L82 PathProgramCache]: Analyzing trace with hash 251427083, now seen corresponding path program 149 times [2021-06-10 14:54:12,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:12,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735360988] [2021-06-10 14:54:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:12,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:12,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:12,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:12,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:12,668 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:12,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:12,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:12,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:12,685 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:12,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:12,698 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:12,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:12,717 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:12,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:12,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735360988] [2021-06-10 14:54:12,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:12,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:12,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081567920] [2021-06-10 14:54:12,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:12,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:12,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:12,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:12,735 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:12,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 458 transitions, 21082 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:12,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:12,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:12,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:13,664 INFO L129 PetriNetUnfolder]: 56/3317 cut-off events. [2021-06-10 14:54:13,664 INFO L130 PetriNetUnfolder]: For 116513/117407 co-relation queries the response was YES. [2021-06-10 14:54:13,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23452 conditions, 3317 events. 56/3317 cut-off events. For 116513/117407 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 50822 event pairs, 48 based on Foata normal form. 32/3247 useless extension candidates. Maximal degree in co-relation 23317. Up to 550 conditions per place. [2021-06-10 14:54:13,698 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 280 selfloop transitions, 168 changer transitions 1/467 dead transitions. [2021-06-10 14:54:13,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 467 transitions, 22094 flow [2021-06-10 14:54:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:13,699 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:13,699 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:13,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:13,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:13,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:13,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:13,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:13,700 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:13,700 INFO L185 Difference]: Start difference. First operand has 567 places, 458 transitions, 21082 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:13,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 467 transitions, 22094 flow [2021-06-10 14:54:14,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 467 transitions, 21764 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 14:54:14,557 INFO L241 Difference]: Finished difference. Result has 568 places, 457 transitions, 21030 flow [2021-06-10 14:54:14,557 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=20760, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21030, PETRI_PLACES=568, PETRI_TRANSITIONS=457} [2021-06-10 14:54:14,558 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 524 predicate places. [2021-06-10 14:54:14,558 INFO L480 AbstractCegarLoop]: Abstraction has has 568 places, 457 transitions, 21030 flow [2021-06-10 14:54:14,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:14,558 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:14,558 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:14,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-10 14:54:14,558 INFO L428 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:14,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:14,558 INFO L82 PathProgramCache]: Analyzing trace with hash -846972669, now seen corresponding path program 150 times [2021-06-10 14:54:14,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:14,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572450721] [2021-06-10 14:54:14,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:14,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:14,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:14,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:14,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:14,569 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:14,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:14,576 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:14,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:14,586 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:14,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:14,600 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:14,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:14,618 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:14,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:14,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572450721] [2021-06-10 14:54:14,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:14,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:14,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558588069] [2021-06-10 14:54:14,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:14,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:14,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:14,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:14,636 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:14,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 457 transitions, 21030 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:14,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:14,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:14,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:15,552 INFO L129 PetriNetUnfolder]: 56/3312 cut-off events. [2021-06-10 14:54:15,552 INFO L130 PetriNetUnfolder]: For 116017/116911 co-relation queries the response was YES. [2021-06-10 14:54:15,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23428 conditions, 3312 events. 56/3312 cut-off events. For 116017/116911 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 50790 event pairs, 38 based on Foata normal form. 32/3242 useless extension candidates. Maximal degree in co-relation 23293. Up to 550 conditions per place. [2021-06-10 14:54:15,579 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 282 selfloop transitions, 165 changer transitions 1/466 dead transitions. [2021-06-10 14:54:15,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 466 transitions, 22040 flow [2021-06-10 14:54:15,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:15,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:15,580 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:15,580 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:15,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:15,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:15,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:15,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:15,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:15,581 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:15,581 INFO L185 Difference]: Start difference. First operand has 568 places, 457 transitions, 21030 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:15,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 466 transitions, 22040 flow [2021-06-10 14:54:16,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 466 transitions, 21739 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 14:54:16,416 INFO L241 Difference]: Finished difference. Result has 570 places, 456 transitions, 20993 flow [2021-06-10 14:54:16,417 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=20737, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20993, PETRI_PLACES=570, PETRI_TRANSITIONS=456} [2021-06-10 14:54:16,417 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 526 predicate places. [2021-06-10 14:54:16,417 INFO L480 AbstractCegarLoop]: Abstraction has has 570 places, 456 transitions, 20993 flow [2021-06-10 14:54:16,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:16,417 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:16,417 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:16,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-10 14:54:16,417 INFO L428 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:16,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:16,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1565530755, now seen corresponding path program 151 times [2021-06-10 14:54:16,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:16,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552941025] [2021-06-10 14:54:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:16,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:16,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:16,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:16,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:16,429 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:16,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:16,435 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:16,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:16,445 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:16,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:16,460 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:16,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:16,478 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:16,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:16,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552941025] [2021-06-10 14:54:16,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:16,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:16,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206514999] [2021-06-10 14:54:16,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:16,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:16,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:16,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:16,498 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:16,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 456 transitions, 20993 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:16,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:16,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:16,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:17,426 INFO L129 PetriNetUnfolder]: 56/3306 cut-off events. [2021-06-10 14:54:17,427 INFO L130 PetriNetUnfolder]: For 115797/116675 co-relation queries the response was YES. [2021-06-10 14:54:17,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23469 conditions, 3306 events. 56/3306 cut-off events. For 115797/116675 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 50598 event pairs, 38 based on Foata normal form. 26/3231 useless extension candidates. Maximal degree in co-relation 23334. Up to 550 conditions per place. [2021-06-10 14:54:17,456 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 283 selfloop transitions, 163 changer transitions 1/465 dead transitions. [2021-06-10 14:54:17,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 465 transitions, 22001 flow [2021-06-10 14:54:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:17,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:17,457 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:17,457 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:17,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:17,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:17,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:17,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:17,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:17,457 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:17,457 INFO L185 Difference]: Start difference. First operand has 570 places, 456 transitions, 20993 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:17,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 465 transitions, 22001 flow [2021-06-10 14:54:18,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 465 transitions, 21673 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 14:54:18,334 INFO L241 Difference]: Finished difference. Result has 571 places, 455 transitions, 20933 flow [2021-06-10 14:54:18,334 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=20673, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20933, PETRI_PLACES=571, PETRI_TRANSITIONS=455} [2021-06-10 14:54:18,334 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 527 predicate places. [2021-06-10 14:54:18,334 INFO L480 AbstractCegarLoop]: Abstraction has has 571 places, 455 transitions, 20933 flow [2021-06-10 14:54:18,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:18,334 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:18,334 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:18,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-10 14:54:18,334 INFO L428 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:18,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:18,334 INFO L82 PathProgramCache]: Analyzing trace with hash 2098408587, now seen corresponding path program 152 times [2021-06-10 14:54:18,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:18,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008138414] [2021-06-10 14:54:18,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:18,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:18,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:18,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:18,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:18,347 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:54:18,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:54:18,354 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:18,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:18,363 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:18,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:18,377 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:18,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:18,395 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:18,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:18,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008138414] [2021-06-10 14:54:18,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:18,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:18,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450650067] [2021-06-10 14:54:18,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:18,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:18,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:18,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:18,413 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:18,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 455 transitions, 20933 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:18,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:18,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:18,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:19,302 INFO L129 PetriNetUnfolder]: 56/3299 cut-off events. [2021-06-10 14:54:19,302 INFO L130 PetriNetUnfolder]: For 115579/116459 co-relation queries the response was YES. [2021-06-10 14:54:19,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23444 conditions, 3299 events. 56/3299 cut-off events. For 115579/116459 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 50409 event pairs, 38 based on Foata normal form. 26/3224 useless extension candidates. Maximal degree in co-relation 23309. Up to 550 conditions per place. [2021-06-10 14:54:19,329 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 283 selfloop transitions, 161 changer transitions 2/464 dead transitions. [2021-06-10 14:54:19,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 464 transitions, 21939 flow [2021-06-10 14:54:19,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:19,330 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:19,330 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:19,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:19,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:19,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:19,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:19,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:19,331 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:19,331 INFO L185 Difference]: Start difference. First operand has 571 places, 455 transitions, 20933 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:19,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 464 transitions, 21939 flow [2021-06-10 14:54:20,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 464 transitions, 21636 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-06-10 14:54:20,165 INFO L241 Difference]: Finished difference. Result has 573 places, 453 transitions, 20853 flow [2021-06-10 14:54:20,165 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=20638, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20853, PETRI_PLACES=573, PETRI_TRANSITIONS=453} [2021-06-10 14:54:20,165 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 529 predicate places. [2021-06-10 14:54:20,165 INFO L480 AbstractCegarLoop]: Abstraction has has 573 places, 453 transitions, 20853 flow [2021-06-10 14:54:20,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:20,165 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:20,165 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:20,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-10 14:54:20,166 INFO L428 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:20,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:20,166 INFO L82 PathProgramCache]: Analyzing trace with hash 568515659, now seen corresponding path program 153 times [2021-06-10 14:54:20,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:20,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959051088] [2021-06-10 14:54:20,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:20,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:20,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:20,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:20,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:20,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:20,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:54:20,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:20,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:54:20,204 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:54:20,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:54:20,225 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:20,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:20,243 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:20,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:20,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959051088] [2021-06-10 14:54:20,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:20,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:20,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802253315] [2021-06-10 14:54:20,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:20,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:20,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:20,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:20,261 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:20,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 453 transitions, 20853 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:20,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:20,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:20,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:21,145 INFO L129 PetriNetUnfolder]: 54/3241 cut-off events. [2021-06-10 14:54:21,145 INFO L130 PetriNetUnfolder]: For 110834/111248 co-relation queries the response was YES. [2021-06-10 14:54:21,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22574 conditions, 3241 events. 54/3241 cut-off events. For 110834/111248 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 49389 event pairs, 32 based on Foata normal form. 17/3163 useless extension candidates. Maximal degree in co-relation 22439. Up to 549 conditions per place. [2021-06-10 14:54:21,171 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 277 selfloop transitions, 212 changer transitions 2/509 dead transitions. [2021-06-10 14:54:21,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 509 transitions, 23773 flow [2021-06-10 14:54:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:21,172 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:21,172 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:21,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:21,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:21,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:21,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:21,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:21,173 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:21,173 INFO L185 Difference]: Start difference. First operand has 573 places, 453 transitions, 20853 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:21,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 509 transitions, 23773 flow [2021-06-10 14:54:21,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 509 transitions, 23375 flow, removed 31 selfloop flow, removed 5 redundant places. [2021-06-10 14:54:21,982 INFO L241 Difference]: Finished difference. Result has 579 places, 471 transitions, 21939 flow [2021-06-10 14:54:21,982 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=20520, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21939, PETRI_PLACES=579, PETRI_TRANSITIONS=471} [2021-06-10 14:54:21,982 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 535 predicate places. [2021-06-10 14:54:21,982 INFO L480 AbstractCegarLoop]: Abstraction has has 579 places, 471 transitions, 21939 flow [2021-06-10 14:54:21,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:21,982 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:21,982 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:21,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-10 14:54:21,982 INFO L428 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:21,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:21,983 INFO L82 PathProgramCache]: Analyzing trace with hash -880840797, now seen corresponding path program 154 times [2021-06-10 14:54:21,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:21,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863550207] [2021-06-10 14:54:21,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:21,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:21,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:21,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:21,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:21,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:21,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:54:22,003 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:54:22,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:54:22,019 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:22,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:22,037 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:54:22,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:54:22,054 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:22,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:22,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863550207] [2021-06-10 14:54:22,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:22,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:22,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241264960] [2021-06-10 14:54:22,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:22,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:22,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:22,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:22,073 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:22,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 471 transitions, 21939 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:22,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:22,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:22,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:23,009 INFO L129 PetriNetUnfolder]: 48/3376 cut-off events. [2021-06-10 14:54:23,009 INFO L130 PetriNetUnfolder]: For 119172/120073 co-relation queries the response was YES. [2021-06-10 14:54:23,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23511 conditions, 3376 events. 48/3376 cut-off events. For 119172/120073 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 51879 event pairs, 23 based on Foata normal form. 17/3295 useless extension candidates. Maximal degree in co-relation 23372. Up to 543 conditions per place. [2021-06-10 14:54:23,038 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 328 selfloop transitions, 203 changer transitions 2/551 dead transitions. [2021-06-10 14:54:23,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 551 transitions, 25906 flow [2021-06-10 14:54:23,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:23,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:23,039 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:23,039 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:23,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:23,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:23,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:23,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:23,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:23,040 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:23,040 INFO L185 Difference]: Start difference. First operand has 579 places, 471 transitions, 21939 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:23,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 551 transitions, 25906 flow [2021-06-10 14:54:23,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 551 transitions, 25738 flow, removed 28 selfloop flow, removed 3 redundant places. [2021-06-10 14:54:23,960 INFO L241 Difference]: Finished difference. Result has 588 places, 495 transitions, 23455 flow [2021-06-10 14:54:23,960 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=21800, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23455, PETRI_PLACES=588, PETRI_TRANSITIONS=495} [2021-06-10 14:54:23,960 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 544 predicate places. [2021-06-10 14:54:23,960 INFO L480 AbstractCegarLoop]: Abstraction has has 588 places, 495 transitions, 23455 flow [2021-06-10 14:54:23,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:23,960 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:23,960 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:23,960 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-10 14:54:23,961 INFO L428 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:23,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:23,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1119797769, now seen corresponding path program 155 times [2021-06-10 14:54:23,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:23,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458080031] [2021-06-10 14:54:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:23,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:23,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:23,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:23,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:23,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:23,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:54:23,979 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:23,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:23,994 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:54:23,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:54:24,015 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:54:24,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:54:24,033 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:24,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:24,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:24,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458080031] [2021-06-10 14:54:24,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:24,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:24,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205810128] [2021-06-10 14:54:24,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:24,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:24,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:24,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:24,051 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:24,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 495 transitions, 23455 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:24,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:24,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:24,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:25,044 INFO L129 PetriNetUnfolder]: 46/3457 cut-off events. [2021-06-10 14:54:25,045 INFO L130 PetriNetUnfolder]: For 128819/129766 co-relation queries the response was YES. [2021-06-10 14:54:25,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24504 conditions, 3457 events. 46/3457 cut-off events. For 128819/129766 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 53604 event pairs, 17 based on Foata normal form. 29/3387 useless extension candidates. Maximal degree in co-relation 24361. Up to 561 conditions per place. [2021-06-10 14:54:25,075 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 281 selfloop transitions, 237 changer transitions 2/538 dead transitions. [2021-06-10 14:54:25,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 538 transitions, 26021 flow [2021-06-10 14:54:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:25,076 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:25,076 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:25,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:25,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:25,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:25,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:25,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:25,077 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:25,077 INFO L185 Difference]: Start difference. First operand has 588 places, 495 transitions, 23455 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:25,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 538 transitions, 26021 flow [2021-06-10 14:54:26,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 538 transitions, 25803 flow, removed 53 selfloop flow, removed 3 redundant places. [2021-06-10 14:54:26,117 INFO L241 Difference]: Finished difference. Result has 596 places, 508 transitions, 24441 flow [2021-06-10 14:54:26,118 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=23261, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=24441, PETRI_PLACES=596, PETRI_TRANSITIONS=508} [2021-06-10 14:54:26,118 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 552 predicate places. [2021-06-10 14:54:26,118 INFO L480 AbstractCegarLoop]: Abstraction has has 596 places, 508 transitions, 24441 flow [2021-06-10 14:54:26,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:26,118 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:26,118 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:26,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-10 14:54:26,118 INFO L428 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:26,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:26,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1164222455, now seen corresponding path program 156 times [2021-06-10 14:54:26,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:26,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927590562] [2021-06-10 14:54:26,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:26,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:26,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:26,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:26,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:26,130 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:26,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:26,142 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:54:26,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:54:26,160 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:26,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:26,179 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:54:26,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:54:26,197 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:26,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:26,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927590562] [2021-06-10 14:54:26,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:26,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:26,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296491698] [2021-06-10 14:54:26,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:26,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:26,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:26,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:26,215 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:26,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 508 transitions, 24441 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:26,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:26,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:26,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:27,251 INFO L129 PetriNetUnfolder]: 44/3479 cut-off events. [2021-06-10 14:54:27,252 INFO L130 PetriNetUnfolder]: For 134463/134947 co-relation queries the response was YES. [2021-06-10 14:54:27,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25014 conditions, 3479 events. 44/3479 cut-off events. For 134463/134947 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 54000 event pairs, 23 based on Foata normal form. 23/3408 useless extension candidates. Maximal degree in co-relation 24868. Up to 536 conditions per place. [2021-06-10 14:54:27,282 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 290 selfloop transitions, 252 changer transitions 2/562 dead transitions. [2021-06-10 14:54:27,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 562 transitions, 27530 flow [2021-06-10 14:54:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:27,283 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:27,283 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:27,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:27,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:27,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:27,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:27,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:27,284 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:27,284 INFO L185 Difference]: Start difference. First operand has 596 places, 508 transitions, 24441 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:27,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 562 transitions, 27530 flow [2021-06-10 14:54:28,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 562 transitions, 27344 flow, removed 37 selfloop flow, removed 3 redundant places. [2021-06-10 14:54:28,249 INFO L241 Difference]: Finished difference. Result has 605 places, 522 transitions, 25832 flow [2021-06-10 14:54:28,249 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=24273, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25832, PETRI_PLACES=605, PETRI_TRANSITIONS=522} [2021-06-10 14:54:28,249 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 561 predicate places. [2021-06-10 14:54:28,249 INFO L480 AbstractCegarLoop]: Abstraction has has 605 places, 522 transitions, 25832 flow [2021-06-10 14:54:28,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:28,249 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:28,249 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:28,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-10 14:54:28,249 INFO L428 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:28,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:28,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1582793519, now seen corresponding path program 157 times [2021-06-10 14:54:28,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:28,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713779290] [2021-06-10 14:54:28,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:28,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:28,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:28,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:28,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:28,261 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:28,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:28,272 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:54:28,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:54:28,281 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:54:28,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:54:28,298 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:54:28,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:54:28,316 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:28,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:28,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713779290] [2021-06-10 14:54:28,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:28,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:28,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546003431] [2021-06-10 14:54:28,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:28,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:28,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:28,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:28,336 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:28,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 522 transitions, 25832 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:28,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:28,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:28,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:29,373 INFO L129 PetriNetUnfolder]: 44/3468 cut-off events. [2021-06-10 14:54:29,373 INFO L130 PetriNetUnfolder]: For 143597/144580 co-relation queries the response was YES. [2021-06-10 14:54:29,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25529 conditions, 3468 events. 44/3468 cut-off events. For 143597/144580 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 53879 event pairs, 24 based on Foata normal form. 44/3416 useless extension candidates. Maximal degree in co-relation 25379. Up to 536 conditions per place. [2021-06-10 14:54:29,398 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 274 selfloop transitions, 251 changer transitions 1/544 dead transitions. [2021-06-10 14:54:29,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 544 transitions, 27612 flow [2021-06-10 14:54:29,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:29,399 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:29,399 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:29,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:29,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:29,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:29,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:29,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:29,400 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:29,400 INFO L185 Difference]: Start difference. First operand has 605 places, 522 transitions, 25832 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:29,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 544 transitions, 27612 flow [2021-06-10 14:54:30,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 544 transitions, 27424 flow, removed 38 selfloop flow, removed 3 redundant places. [2021-06-10 14:54:30,295 INFO L241 Difference]: Finished difference. Result has 610 places, 527 transitions, 26460 flow [2021-06-10 14:54:30,295 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=25652, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=26460, PETRI_PLACES=610, PETRI_TRANSITIONS=527} [2021-06-10 14:54:30,295 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 566 predicate places. [2021-06-10 14:54:30,295 INFO L480 AbstractCegarLoop]: Abstraction has has 610 places, 527 transitions, 26460 flow [2021-06-10 14:54:30,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:30,295 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:30,295 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:30,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-10 14:54:30,295 INFO L428 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:30,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:30,296 INFO L82 PathProgramCache]: Analyzing trace with hash 229662543, now seen corresponding path program 158 times [2021-06-10 14:54:30,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:30,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054798748] [2021-06-10 14:54:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:30,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:30,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:30,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:30,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:30,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:30,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:30,318 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:54:30,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:54:30,327 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:30,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:30,339 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:54:30,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:54:30,362 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:30,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:30,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054798748] [2021-06-10 14:54:30,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:30,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:30,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867501780] [2021-06-10 14:54:30,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:30,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:30,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:30,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:30,380 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:30,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 527 transitions, 26460 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:30,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:30,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:30,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:31,390 INFO L129 PetriNetUnfolder]: 44/3464 cut-off events. [2021-06-10 14:54:31,390 INFO L130 PetriNetUnfolder]: For 146185/147168 co-relation queries the response was YES. [2021-06-10 14:54:31,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25768 conditions, 3464 events. 44/3464 cut-off events. For 146185/147168 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 53700 event pairs, 28 based on Foata normal form. 44/3412 useless extension candidates. Maximal degree in co-relation 25618. Up to 536 conditions per place. [2021-06-10 14:54:31,420 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 279 selfloop transitions, 244 changer transitions 2/543 dead transitions. [2021-06-10 14:54:31,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 543 transitions, 27918 flow [2021-06-10 14:54:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:31,421 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:31,421 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:31,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:31,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:31,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:31,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:31,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:31,422 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:31,422 INFO L185 Difference]: Start difference. First operand has 610 places, 527 transitions, 26460 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:31,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 543 transitions, 27918 flow [2021-06-10 14:54:32,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 543 transitions, 27352 flow, removed 74 selfloop flow, removed 5 redundant places. [2021-06-10 14:54:32,413 INFO L241 Difference]: Finished difference. Result has 611 places, 525 transitions, 26281 flow [2021-06-10 14:54:32,413 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=25902, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=26281, PETRI_PLACES=611, PETRI_TRANSITIONS=525} [2021-06-10 14:54:32,413 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 567 predicate places. [2021-06-10 14:54:32,413 INFO L480 AbstractCegarLoop]: Abstraction has has 611 places, 525 transitions, 26281 flow [2021-06-10 14:54:32,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:32,413 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:32,413 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:32,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-10 14:54:32,413 INFO L428 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:32,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:32,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1939984855, now seen corresponding path program 159 times [2021-06-10 14:54:32,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:32,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039863025] [2021-06-10 14:54:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:32,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:32,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:32,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:32,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:32,425 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:32,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:32,437 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:54:32,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:54:32,458 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:54:32,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:54:32,474 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:32,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:32,499 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:32,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:32,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:32,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039863025] [2021-06-10 14:54:32,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:32,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:32,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154607921] [2021-06-10 14:54:32,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:32,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:32,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:32,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:32,521 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:32,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 525 transitions, 26281 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:32,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:32,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:32,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:33,558 INFO L129 PetriNetUnfolder]: 44/3456 cut-off events. [2021-06-10 14:54:33,558 INFO L130 PetriNetUnfolder]: For 142152/143135 co-relation queries the response was YES. [2021-06-10 14:54:33,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25761 conditions, 3456 events. 44/3456 cut-off events. For 142152/143135 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 53598 event pairs, 24 based on Foata normal form. 44/3405 useless extension candidates. Maximal degree in co-relation 25613. Up to 536 conditions per place. [2021-06-10 14:54:33,589 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 272 selfloop transitions, 249 changer transitions 2/541 dead transitions. [2021-06-10 14:54:33,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 541 transitions, 27735 flow [2021-06-10 14:54:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:33,590 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:33,590 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:33,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:33,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:33,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:33,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:33,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:33,591 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:33,591 INFO L185 Difference]: Start difference. First operand has 611 places, 525 transitions, 26281 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:33,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 541 transitions, 27735 flow [2021-06-10 14:54:34,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 541 transitions, 27251 flow, removed 18 selfloop flow, removed 4 redundant places. [2021-06-10 14:54:34,693 INFO L241 Difference]: Finished difference. Result has 615 places, 524 transitions, 26267 flow [2021-06-10 14:54:34,693 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=25805, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=26267, PETRI_PLACES=615, PETRI_TRANSITIONS=524} [2021-06-10 14:54:34,693 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 571 predicate places. [2021-06-10 14:54:34,693 INFO L480 AbstractCegarLoop]: Abstraction has has 615 places, 524 transitions, 26267 flow [2021-06-10 14:54:34,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:34,693 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:34,693 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:34,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-10 14:54:34,694 INFO L428 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:34,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:34,694 INFO L82 PathProgramCache]: Analyzing trace with hash -180072263, now seen corresponding path program 160 times [2021-06-10 14:54:34,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:34,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611820486] [2021-06-10 14:54:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:34,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:34,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:34,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:34,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:34,706 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:34,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:34,718 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:34,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:34,733 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:54:34,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:54:34,755 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:54:34,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:54:34,774 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:34,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:34,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611820486] [2021-06-10 14:54:34,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:34,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:34,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358109966] [2021-06-10 14:54:34,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:34,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:34,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:34,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:34,792 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:34,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 524 transitions, 26267 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:34,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:34,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:34,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:35,874 INFO L129 PetriNetUnfolder]: 43/3453 cut-off events. [2021-06-10 14:54:35,875 INFO L130 PetriNetUnfolder]: For 141365/142342 co-relation queries the response was YES. [2021-06-10 14:54:35,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25690 conditions, 3453 events. 43/3453 cut-off events. For 141365/142342 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 53462 event pairs, 23 based on Foata normal form. 32/3392 useless extension candidates. Maximal degree in co-relation 25541. Up to 536 conditions per place. [2021-06-10 14:54:35,907 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 262 selfloop transitions, 269 changer transitions 2/551 dead transitions. [2021-06-10 14:54:35,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 551 transitions, 28210 flow [2021-06-10 14:54:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:35,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:35,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:35,908 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:35,908 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:35,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:35,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:35,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:35,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:35,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:35,909 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:35,909 INFO L185 Difference]: Start difference. First operand has 615 places, 524 transitions, 26267 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:35,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 551 transitions, 28210 flow [2021-06-10 14:54:37,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 551 transitions, 27924 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 14:54:37,016 INFO L241 Difference]: Finished difference. Result has 622 places, 533 transitions, 27108 flow [2021-06-10 14:54:37,016 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=26003, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27108, PETRI_PLACES=622, PETRI_TRANSITIONS=533} [2021-06-10 14:54:37,016 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 578 predicate places. [2021-06-10 14:54:37,016 INFO L480 AbstractCegarLoop]: Abstraction has has 622 places, 533 transitions, 27108 flow [2021-06-10 14:54:37,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:37,016 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:37,016 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:37,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-10 14:54:37,016 INFO L428 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:37,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:37,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1925871467, now seen corresponding path program 161 times [2021-06-10 14:54:37,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:37,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136620302] [2021-06-10 14:54:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:37,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:37,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:37,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:37,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:37,029 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:37,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:37,042 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:54:37,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:54:37,052 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:37,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:37,066 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:37,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:37,084 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:37,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:37,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136620302] [2021-06-10 14:54:37,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:37,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:37,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517992189] [2021-06-10 14:54:37,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:37,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:37,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:37,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:37,102 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:37,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 533 transitions, 27108 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:37,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:37,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:37,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:38,212 INFO L129 PetriNetUnfolder]: 43/3442 cut-off events. [2021-06-10 14:54:38,212 INFO L130 PetriNetUnfolder]: For 147020/147997 co-relation queries the response was YES. [2021-06-10 14:54:38,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25891 conditions, 3442 events. 43/3442 cut-off events. For 147020/147997 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 53229 event pairs, 23 based on Foata normal form. 42/3391 useless extension candidates. Maximal degree in co-relation 25738. Up to 536 conditions per place. [2021-06-10 14:54:38,244 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 277 selfloop transitions, 244 changer transitions 2/541 dead transitions. [2021-06-10 14:54:38,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 541 transitions, 28271 flow [2021-06-10 14:54:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:38,245 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:38,245 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:38,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:38,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:38,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:38,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:38,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:38,246 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:38,246 INFO L185 Difference]: Start difference. First operand has 622 places, 533 transitions, 27108 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:38,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 541 transitions, 28271 flow [2021-06-10 14:54:39,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 541 transitions, 27914 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-06-10 14:54:39,396 INFO L241 Difference]: Finished difference. Result has 626 places, 532 transitions, 27188 flow [2021-06-10 14:54:39,396 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=26759, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27188, PETRI_PLACES=626, PETRI_TRANSITIONS=532} [2021-06-10 14:54:39,396 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 582 predicate places. [2021-06-10 14:54:39,396 INFO L480 AbstractCegarLoop]: Abstraction has has 626 places, 532 transitions, 27188 flow [2021-06-10 14:54:39,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:39,396 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:39,396 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:39,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-10 14:54:39,396 INFO L428 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:39,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:39,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1830078867, now seen corresponding path program 162 times [2021-06-10 14:54:39,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:39,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985689311] [2021-06-10 14:54:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:39,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:39,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:39,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:39,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:39,408 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:39,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:39,421 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:39,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:39,436 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:39,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:39,456 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:54:39,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:54:39,475 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:39,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:39,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985689311] [2021-06-10 14:54:39,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:39,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:39,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400375871] [2021-06-10 14:54:39,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:39,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:39,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:39,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:39,494 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:39,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 532 transitions, 27188 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:39,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:39,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:39,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:40,574 INFO L129 PetriNetUnfolder]: 43/3434 cut-off events. [2021-06-10 14:54:40,575 INFO L130 PetriNetUnfolder]: For 147198/148181 co-relation queries the response was YES. [2021-06-10 14:54:40,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25982 conditions, 3434 events. 43/3434 cut-off events. For 147198/148181 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 53186 event pairs, 23 based on Foata normal form. 34/3376 useless extension candidates. Maximal degree in co-relation 25829. Up to 536 conditions per place. [2021-06-10 14:54:40,606 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 264 selfloop transitions, 266 changer transitions 2/550 dead transitions. [2021-06-10 14:54:40,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 550 transitions, 28801 flow [2021-06-10 14:54:40,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:40,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:40,607 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:40,607 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:40,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:40,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:40,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:40,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:40,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:40,608 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:40,608 INFO L185 Difference]: Start difference. First operand has 626 places, 532 transitions, 27188 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:40,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 550 transitions, 28801 flow [2021-06-10 14:54:41,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 550 transitions, 28298 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:54:41,787 INFO L241 Difference]: Finished difference. Result has 630 places, 535 transitions, 27429 flow [2021-06-10 14:54:41,787 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=26708, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27429, PETRI_PLACES=630, PETRI_TRANSITIONS=535} [2021-06-10 14:54:41,787 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 586 predicate places. [2021-06-10 14:54:41,787 INFO L480 AbstractCegarLoop]: Abstraction has has 630 places, 535 transitions, 27429 flow [2021-06-10 14:54:41,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:41,787 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:41,787 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:41,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-10 14:54:41,787 INFO L428 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:41,788 INFO L82 PathProgramCache]: Analyzing trace with hash 232192817, now seen corresponding path program 163 times [2021-06-10 14:54:41,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:41,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194434357] [2021-06-10 14:54:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:41,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:41,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:41,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:41,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:41,799 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:41,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:41,811 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:41,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:41,826 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:41,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:41,846 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:54:41,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:54:41,864 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:41,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:41,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194434357] [2021-06-10 14:54:41,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:41,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:41,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779322775] [2021-06-10 14:54:41,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:41,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:41,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:41,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:41,882 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:41,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 535 transitions, 27429 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:41,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:41,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:41,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:42,968 INFO L129 PetriNetUnfolder]: 43/3423 cut-off events. [2021-06-10 14:54:42,968 INFO L130 PetriNetUnfolder]: For 148264/149247 co-relation queries the response was YES. [2021-06-10 14:54:42,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25977 conditions, 3423 events. 43/3423 cut-off events. For 148264/149247 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 52947 event pairs, 23 based on Foata normal form. 34/3365 useless extension candidates. Maximal degree in co-relation 25822. Up to 536 conditions per place. [2021-06-10 14:54:42,998 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 263 selfloop transitions, 265 changer transitions 2/548 dead transitions. [2021-06-10 14:54:42,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 548 transitions, 28841 flow [2021-06-10 14:54:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:42,999 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:42,999 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:42,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:42,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:42,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:43,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:43,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:43,000 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:43,000 INFO L185 Difference]: Start difference. First operand has 630 places, 535 transitions, 27429 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:43,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 548 transitions, 28841 flow [2021-06-10 14:54:44,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 548 transitions, 28486 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-06-10 14:54:44,186 INFO L241 Difference]: Finished difference. Result has 634 places, 535 transitions, 27637 flow [2021-06-10 14:54:44,187 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=27086, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27637, PETRI_PLACES=634, PETRI_TRANSITIONS=535} [2021-06-10 14:54:44,187 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 590 predicate places. [2021-06-10 14:54:44,187 INFO L480 AbstractCegarLoop]: Abstraction has has 634 places, 535 transitions, 27637 flow [2021-06-10 14:54:44,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:44,187 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:44,187 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:44,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-10 14:54:44,187 INFO L428 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:44,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:44,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1592697819, now seen corresponding path program 164 times [2021-06-10 14:54:44,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:44,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751866414] [2021-06-10 14:54:44,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:44,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:44,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:44,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:44,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:44,199 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:44,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:44,211 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:44,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:44,226 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:54:44,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:54:44,246 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:44,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:44,265 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:44,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:44,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:44,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751866414] [2021-06-10 14:54:44,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:44,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:44,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230999954] [2021-06-10 14:54:44,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:44,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:44,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:44,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:44,283 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:44,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 535 transitions, 27637 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:44,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:44,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:44,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:45,378 INFO L129 PetriNetUnfolder]: 43/3412 cut-off events. [2021-06-10 14:54:45,378 INFO L130 PetriNetUnfolder]: For 148605/149588 co-relation queries the response was YES. [2021-06-10 14:54:45,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26087 conditions, 3412 events. 43/3412 cut-off events. For 148605/149588 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 52788 event pairs, 23 based on Foata normal form. 34/3354 useless extension candidates. Maximal degree in co-relation 25932. Up to 536 conditions per place. [2021-06-10 14:54:45,411 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 261 selfloop transitions, 267 changer transitions 2/548 dead transitions. [2021-06-10 14:54:45,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 548 transitions, 29051 flow [2021-06-10 14:54:45,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:45,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:45,412 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:45,412 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:45,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:45,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:45,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:45,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:45,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:45,413 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:45,413 INFO L185 Difference]: Start difference. First operand has 634 places, 535 transitions, 27637 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:45,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 640 places, 548 transitions, 29051 flow [2021-06-10 14:54:46,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 548 transitions, 28515 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-06-10 14:54:46,648 INFO L241 Difference]: Finished difference. Result has 637 places, 535 transitions, 27663 flow [2021-06-10 14:54:46,648 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=27109, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27663, PETRI_PLACES=637, PETRI_TRANSITIONS=535} [2021-06-10 14:54:46,648 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 593 predicate places. [2021-06-10 14:54:46,648 INFO L480 AbstractCegarLoop]: Abstraction has has 637 places, 535 transitions, 27663 flow [2021-06-10 14:54:46,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:46,648 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:46,648 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:46,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-10 14:54:46,649 INFO L428 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:46,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:46,649 INFO L82 PathProgramCache]: Analyzing trace with hash 563881193, now seen corresponding path program 165 times [2021-06-10 14:54:46,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:46,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377191923] [2021-06-10 14:54:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:46,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:46,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:46,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:46,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:46,660 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:46,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:46,672 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:46,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:46,687 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:54:46,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:54:46,702 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:46,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:46,720 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:46,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:46,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377191923] [2021-06-10 14:54:46,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:46,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:46,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29845229] [2021-06-10 14:54:46,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:46,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:46,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:46,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:46,739 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:46,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 535 transitions, 27663 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:46,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:46,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:46,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:47,857 INFO L129 PetriNetUnfolder]: 43/3401 cut-off events. [2021-06-10 14:54:47,857 INFO L130 PetriNetUnfolder]: For 148969/149952 co-relation queries the response was YES. [2021-06-10 14:54:47,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26047 conditions, 3401 events. 43/3401 cut-off events. For 148969/149952 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 52516 event pairs, 25 based on Foata normal form. 34/3343 useless extension candidates. Maximal degree in co-relation 25891. Up to 536 conditions per place. [2021-06-10 14:54:47,888 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 261 selfloop transitions, 266 changer transitions 1/546 dead transitions. [2021-06-10 14:54:47,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 546 transitions, 28981 flow [2021-06-10 14:54:47,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:47,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:47,889 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:47,889 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:47,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:47,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:47,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:47,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:47,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:47,889 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:47,889 INFO L185 Difference]: Start difference. First operand has 637 places, 535 transitions, 27663 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:47,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 546 transitions, 28981 flow [2021-06-10 14:54:49,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 546 transitions, 28443 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-06-10 14:54:49,017 INFO L241 Difference]: Finished difference. Result has 640 places, 538 transitions, 27854 flow [2021-06-10 14:54:49,018 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=27133, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27854, PETRI_PLACES=640, PETRI_TRANSITIONS=538} [2021-06-10 14:54:49,018 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 596 predicate places. [2021-06-10 14:54:49,018 INFO L480 AbstractCegarLoop]: Abstraction has has 640 places, 538 transitions, 27854 flow [2021-06-10 14:54:49,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:49,018 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:49,018 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:49,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-10 14:54:49,018 INFO L428 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:49,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:49,018 INFO L82 PathProgramCache]: Analyzing trace with hash -2066707253, now seen corresponding path program 166 times [2021-06-10 14:54:49,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:49,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961785398] [2021-06-10 14:54:49,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:49,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:49,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:49,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:49,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:49,030 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:49,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:49,042 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:49,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:49,057 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:54:49,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:54:49,071 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:54:49,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:54:49,089 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:49,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:49,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961785398] [2021-06-10 14:54:49,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:49,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:49,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283092251] [2021-06-10 14:54:49,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:49,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:49,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:49,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:49,107 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:49,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 538 transitions, 27854 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:49,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:49,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:49,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:50,187 INFO L129 PetriNetUnfolder]: 43/3396 cut-off events. [2021-06-10 14:54:50,188 INFO L130 PetriNetUnfolder]: For 149391/150368 co-relation queries the response was YES. [2021-06-10 14:54:50,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26041 conditions, 3396 events. 43/3396 cut-off events. For 149391/150368 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 52348 event pairs, 23 based on Foata normal form. 32/3337 useless extension candidates. Maximal degree in co-relation 25884. Up to 536 conditions per place. [2021-06-10 14:54:50,220 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 263 selfloop transitions, 261 changer transitions 3/545 dead transitions. [2021-06-10 14:54:50,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 545 transitions, 28982 flow [2021-06-10 14:54:50,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:50,221 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:50,221 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:50,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:50,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:50,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:50,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:50,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:50,222 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:50,222 INFO L185 Difference]: Start difference. First operand has 640 places, 538 transitions, 27854 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:50,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 545 transitions, 28982 flow [2021-06-10 14:54:51,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 545 transitions, 28476 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-06-10 14:54:51,415 INFO L241 Difference]: Finished difference. Result has 642 places, 535 transitions, 27741 flow [2021-06-10 14:54:51,415 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=27356, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27741, PETRI_PLACES=642, PETRI_TRANSITIONS=535} [2021-06-10 14:54:51,415 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 598 predicate places. [2021-06-10 14:54:51,415 INFO L480 AbstractCegarLoop]: Abstraction has has 642 places, 535 transitions, 27741 flow [2021-06-10 14:54:51,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:51,415 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:51,415 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:51,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-10 14:54:51,415 INFO L428 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:51,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:51,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1539954019, now seen corresponding path program 167 times [2021-06-10 14:54:51,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:51,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29300939] [2021-06-10 14:54:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:51,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:51,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:51,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:51,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:51,469 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:51,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:51,483 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:54:51,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:54:51,509 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:51,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:51,526 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:51,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:51,553 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:51,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:51,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29300939] [2021-06-10 14:54:51,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:51,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:51,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369842472] [2021-06-10 14:54:51,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:51,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:51,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:51,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:51,572 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:51,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 535 transitions, 27741 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:51,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:51,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:51,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:52,658 INFO L129 PetriNetUnfolder]: 43/3375 cut-off events. [2021-06-10 14:54:52,658 INFO L130 PetriNetUnfolder]: For 148170/149147 co-relation queries the response was YES. [2021-06-10 14:54:52,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25891 conditions, 3375 events. 43/3375 cut-off events. For 148170/149147 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 51979 event pairs, 23 based on Foata normal form. 42/3326 useless extension candidates. Maximal degree in co-relation 25734. Up to 536 conditions per place. [2021-06-10 14:54:52,694 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 272 selfloop transitions, 250 changer transitions 2/542 dead transitions. [2021-06-10 14:54:52,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 647 places, 542 transitions, 28863 flow [2021-06-10 14:54:52,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:52,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:52,695 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:52,695 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:52,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:52,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:52,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:52,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:52,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:52,696 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:52,696 INFO L185 Difference]: Start difference. First operand has 642 places, 535 transitions, 27741 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:52,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 647 places, 542 transitions, 28863 flow [2021-06-10 14:54:53,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 542 transitions, 28314 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-06-10 14:54:53,827 INFO L241 Difference]: Finished difference. Result has 643 places, 534 transitions, 27632 flow [2021-06-10 14:54:53,828 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=27200, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27632, PETRI_PLACES=643, PETRI_TRANSITIONS=534} [2021-06-10 14:54:53,828 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 599 predicate places. [2021-06-10 14:54:53,828 INFO L480 AbstractCegarLoop]: Abstraction has has 643 places, 534 transitions, 27632 flow [2021-06-10 14:54:53,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:53,828 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:53,828 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:53,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-10 14:54:53,828 INFO L428 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:53,828 INFO L82 PathProgramCache]: Analyzing trace with hash -372946013, now seen corresponding path program 168 times [2021-06-10 14:54:53,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:53,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275686580] [2021-06-10 14:54:53,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:53,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:53,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:53,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:53,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:53,839 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:53,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:53,851 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:54:53,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:54:53,862 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:53,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:53,875 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:53,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:53,893 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:53,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:53,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275686580] [2021-06-10 14:54:53,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:53,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:53,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333896013] [2021-06-10 14:54:53,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:53,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:53,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:53,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:53,911 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:53,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 534 transitions, 27632 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:53,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:53,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:53,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:55,078 INFO L129 PetriNetUnfolder]: 43/3367 cut-off events. [2021-06-10 14:54:55,079 INFO L130 PetriNetUnfolder]: For 148363/149433 co-relation queries the response was YES. [2021-06-10 14:54:55,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25835 conditions, 3367 events. 43/3367 cut-off events. For 148363/149433 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 51918 event pairs, 23 based on Foata normal form. 48/3325 useless extension candidates. Maximal degree in co-relation 25678. Up to 536 conditions per place. [2021-06-10 14:54:55,107 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 272 selfloop transitions, 247 changer transitions 3/540 dead transitions. [2021-06-10 14:54:55,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 540 transitions, 28716 flow [2021-06-10 14:54:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:55,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:55,108 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:55,108 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:55,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:55,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:55,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:55,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:55,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:55,108 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:55,108 INFO L185 Difference]: Start difference. First operand has 643 places, 534 transitions, 27632 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:55,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 540 transitions, 28716 flow [2021-06-10 14:54:56,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 540 transitions, 28244 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:54:56,205 INFO L241 Difference]: Finished difference. Result has 645 places, 531 transitions, 27493 flow [2021-06-10 14:54:56,205 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=27168, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27493, PETRI_PLACES=645, PETRI_TRANSITIONS=531} [2021-06-10 14:54:56,206 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 601 predicate places. [2021-06-10 14:54:56,206 INFO L480 AbstractCegarLoop]: Abstraction has has 645 places, 531 transitions, 27493 flow [2021-06-10 14:54:56,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:56,206 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:56,206 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:56,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-10 14:54:56,206 INFO L428 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:56,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:56,206 INFO L82 PathProgramCache]: Analyzing trace with hash 8849831, now seen corresponding path program 169 times [2021-06-10 14:54:56,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:56,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633708754] [2021-06-10 14:54:56,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:56,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:56,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:56,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:56,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:56,218 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:54:56,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:54:56,229 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:54:56,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:54:56,246 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:54:56,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:54:56,259 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:56,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:56,276 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:56,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:56,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633708754] [2021-06-10 14:54:56,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:56,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:56,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122108228] [2021-06-10 14:54:56,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:56,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:56,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:56,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:56,294 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:56,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 531 transitions, 27493 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:56,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:56,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:56,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:54:57,373 INFO L129 PetriNetUnfolder]: 43/3350 cut-off events. [2021-06-10 14:54:57,373 INFO L130 PetriNetUnfolder]: For 147638/148360 co-relation queries the response was YES. [2021-06-10 14:54:57,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25737 conditions, 3350 events. 43/3350 cut-off events. For 147638/148360 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 51558 event pairs, 27 based on Foata normal form. 35/3295 useless extension candidates. Maximal degree in co-relation 25581. Up to 536 conditions per place. [2021-06-10 14:54:57,407 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 280 selfloop transitions, 252 changer transitions 1/551 dead transitions. [2021-06-10 14:54:57,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 551 transitions, 29225 flow [2021-06-10 14:54:57,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:54:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:54:57,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:54:57,408 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:54:57,408 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:54:57,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:54:57,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:54:57,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:54:57,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:57,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:57,409 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:57,409 INFO L185 Difference]: Start difference. First operand has 645 places, 531 transitions, 27493 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:54:57,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 551 transitions, 29225 flow [2021-06-10 14:54:58,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 551 transitions, 28712 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:54:58,609 INFO L241 Difference]: Finished difference. Result has 649 places, 542 transitions, 28096 flow [2021-06-10 14:54:58,609 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=27010, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=28096, PETRI_PLACES=649, PETRI_TRANSITIONS=542} [2021-06-10 14:54:58,609 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 605 predicate places. [2021-06-10 14:54:58,609 INFO L480 AbstractCegarLoop]: Abstraction has has 649 places, 542 transitions, 28096 flow [2021-06-10 14:54:58,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:58,609 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:54:58,609 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:54:58,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-10 14:54:58,609 INFO L428 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:54:58,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:54:58,610 INFO L82 PathProgramCache]: Analyzing trace with hash 609680595, now seen corresponding path program 170 times [2021-06-10 14:54:58,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:54:58,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455342031] [2021-06-10 14:54:58,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:54:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:54:58,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:58,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:54:58,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:58,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:54:58,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:54:58,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:54:58,627 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:54:58,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:54:58,644 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:54:58,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:54:58,668 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:54:58,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:54:58,685 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:54:58,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:54:58,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:54:58,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455342031] [2021-06-10 14:54:58,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:54:58,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:54:58,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347063397] [2021-06-10 14:54:58,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:54:58,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:54:58,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:54:58,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:54:58,704 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:54:58,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 542 transitions, 28096 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:54:58,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:54:58,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:54:58,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:00,005 INFO L129 PetriNetUnfolder]: 31/4040 cut-off events. [2021-06-10 14:55:00,006 INFO L130 PetriNetUnfolder]: For 175737/176439 co-relation queries the response was YES. [2021-06-10 14:55:00,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30165 conditions, 4040 events. 31/4040 cut-off events. For 175737/176439 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 64757 event pairs, 21 based on Foata normal form. 22/3962 useless extension candidates. Maximal degree in co-relation 30007. Up to 629 conditions per place. [2021-06-10 14:55:00,043 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 392 selfloop transitions, 243 changer transitions 2/655 dead transitions. [2021-06-10 14:55:00,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 655 transitions, 34825 flow [2021-06-10 14:55:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:00,045 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:00,045 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:00,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:00,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:00,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:00,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:00,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:00,045 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:00,045 INFO L185 Difference]: Start difference. First operand has 649 places, 542 transitions, 28096 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:00,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 655 transitions, 34825 flow [2021-06-10 14:55:01,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 655 transitions, 34422 flow, removed 28 selfloop flow, removed 3 redundant places. [2021-06-10 14:55:01,465 INFO L241 Difference]: Finished difference. Result has 658 places, 578 transitions, 30455 flow [2021-06-10 14:55:01,465 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=27743, PETRI_DIFFERENCE_MINUEND_PLACES=645, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30455, PETRI_PLACES=658, PETRI_TRANSITIONS=578} [2021-06-10 14:55:01,466 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 614 predicate places. [2021-06-10 14:55:01,466 INFO L480 AbstractCegarLoop]: Abstraction has has 658 places, 578 transitions, 30455 flow [2021-06-10 14:55:01,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:01,466 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:01,466 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:01,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-10 14:55:01,466 INFO L428 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:01,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:01,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1393131483, now seen corresponding path program 171 times [2021-06-10 14:55:01,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:01,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013466084] [2021-06-10 14:55:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:01,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:01,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:01,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:01,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:01,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:01,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:55:01,490 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:01,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:01,508 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:55:01,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:55:01,535 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:01,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:01,553 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:01,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:01,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013466084] [2021-06-10 14:55:01,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:01,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:01,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032284282] [2021-06-10 14:55:01,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:01,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:01,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:01,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:01,576 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:01,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 578 transitions, 30455 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:01,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:01,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:01,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:02,981 INFO L129 PetriNetUnfolder]: 31/4029 cut-off events. [2021-06-10 14:55:02,981 INFO L130 PetriNetUnfolder]: For 181927/182732 co-relation queries the response was YES. [2021-06-10 14:55:03,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30592 conditions, 4029 events. 31/4029 cut-off events. For 181927/182732 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 64463 event pairs, 9 based on Foata normal form. 5/3934 useless extension candidates. Maximal degree in co-relation 30429. Up to 671 conditions per place. [2021-06-10 14:55:03,018 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 403 selfloop transitions, 258 changer transitions 4/683 dead transitions. [2021-06-10 14:55:03,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 683 transitions, 36543 flow [2021-06-10 14:55:03,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:03,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:03,019 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:03,019 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:03,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:03,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:03,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:03,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:03,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:03,020 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:03,020 INFO L185 Difference]: Start difference. First operand has 658 places, 578 transitions, 30455 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:03,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 683 transitions, 36543 flow [2021-06-10 14:55:04,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 683 transitions, 36366 flow, removed 20 selfloop flow, removed 3 redundant places. [2021-06-10 14:55:04,546 INFO L241 Difference]: Finished difference. Result has 667 places, 620 transitions, 33226 flow [2021-06-10 14:55:04,546 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=30311, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33226, PETRI_PLACES=667, PETRI_TRANSITIONS=620} [2021-06-10 14:55:04,546 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 623 predicate places. [2021-06-10 14:55:04,546 INFO L480 AbstractCegarLoop]: Abstraction has has 667 places, 620 transitions, 33226 flow [2021-06-10 14:55:04,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:04,546 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:04,547 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:04,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-10 14:55:04,547 INFO L428 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:04,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:04,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1011433107, now seen corresponding path program 172 times [2021-06-10 14:55:04,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:04,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896418560] [2021-06-10 14:55:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:04,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:04,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:04,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:04,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:04,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:04,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:04,571 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:04,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:04,590 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:55:04,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:55:04,614 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:04,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:04,632 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:04,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:04,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896418560] [2021-06-10 14:55:04,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:04,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:04,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227299600] [2021-06-10 14:55:04,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:04,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:04,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:04,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:04,651 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:04,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 620 transitions, 33226 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:04,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:04,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:04,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:06,149 INFO L129 PetriNetUnfolder]: 29/4051 cut-off events. [2021-06-10 14:55:06,149 INFO L130 PetriNetUnfolder]: For 192322/193274 co-relation queries the response was YES. [2021-06-10 14:55:06,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31278 conditions, 4051 events. 29/4051 cut-off events. For 192322/193274 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 64934 event pairs, 29 based on Foata normal form. 38/3990 useless extension candidates. Maximal degree in co-relation 31111. Up to 592 conditions per place. [2021-06-10 14:55:06,184 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 293 selfloop transitions, 319 changer transitions 2/632 dead transitions. [2021-06-10 14:55:06,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 673 places, 632 transitions, 34798 flow [2021-06-10 14:55:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:06,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:06,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:06,185 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:06,185 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:06,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:06,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:06,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:06,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:06,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:06,186 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:06,186 INFO L185 Difference]: Start difference. First operand has 667 places, 620 transitions, 33226 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:06,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 673 places, 632 transitions, 34798 flow [2021-06-10 14:55:07,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 632 transitions, 34452 flow, removed 71 selfloop flow, removed 4 redundant places. [2021-06-10 14:55:07,671 INFO L241 Difference]: Finished difference. Result has 673 places, 624 transitions, 33767 flow [2021-06-10 14:55:07,671 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=32893, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33767, PETRI_PLACES=673, PETRI_TRANSITIONS=624} [2021-06-10 14:55:07,671 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 629 predicate places. [2021-06-10 14:55:07,671 INFO L480 AbstractCegarLoop]: Abstraction has has 673 places, 624 transitions, 33767 flow [2021-06-10 14:55:07,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:07,671 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:07,671 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:07,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-10 14:55:07,672 INFO L428 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:07,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:07,672 INFO L82 PathProgramCache]: Analyzing trace with hash -575861733, now seen corresponding path program 173 times [2021-06-10 14:55:07,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:07,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787989513] [2021-06-10 14:55:07,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:07,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:07,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:07,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:07,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:07,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:07,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:07,695 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:07,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:07,713 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:55:07,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:55:07,737 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:55:07,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:55:07,758 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:07,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:07,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:07,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787989513] [2021-06-10 14:55:07,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:07,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:07,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563220481] [2021-06-10 14:55:07,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:07,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:07,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:07,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:07,776 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:07,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 624 transitions, 33767 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:07,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:07,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:07,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:09,354 INFO L129 PetriNetUnfolder]: 29/4040 cut-off events. [2021-06-10 14:55:09,354 INFO L130 PetriNetUnfolder]: For 194015/194917 co-relation queries the response was YES. [2021-06-10 14:55:09,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31387 conditions, 4040 events. 29/4040 cut-off events. For 194015/194917 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 64801 event pairs, 29 based on Foata normal form. 38/3979 useless extension candidates. Maximal degree in co-relation 31218. Up to 592 conditions per place. [2021-06-10 14:55:09,385 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 316 selfloop transitions, 313 changer transitions 3/650 dead transitions. [2021-06-10 14:55:09,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 650 transitions, 36102 flow [2021-06-10 14:55:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:09,386 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:09,386 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:09,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:09,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:09,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:09,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:09,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:09,387 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:09,387 INFO L185 Difference]: Start difference. First operand has 673 places, 624 transitions, 33767 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:09,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 650 transitions, 36102 flow [2021-06-10 14:55:10,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 650 transitions, 35490 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-06-10 14:55:10,852 INFO L241 Difference]: Finished difference. Result has 678 places, 627 transitions, 34146 flow [2021-06-10 14:55:10,852 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=33166, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=34146, PETRI_PLACES=678, PETRI_TRANSITIONS=627} [2021-06-10 14:55:10,852 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 634 predicate places. [2021-06-10 14:55:10,852 INFO L480 AbstractCegarLoop]: Abstraction has has 678 places, 627 transitions, 34146 flow [2021-06-10 14:55:10,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:10,852 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:10,852 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:10,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-10 14:55:10,852 INFO L428 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:10,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:10,853 INFO L82 PathProgramCache]: Analyzing trace with hash 2002453169, now seen corresponding path program 174 times [2021-06-10 14:55:10,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:10,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474022243] [2021-06-10 14:55:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:10,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:10,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:10,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:10,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:10,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:10,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:10,913 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:10,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:10,938 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:55:10,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:55:10,977 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:55:10,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:55:10,996 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:10,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:11,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474022243] [2021-06-10 14:55:11,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:11,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:11,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199519542] [2021-06-10 14:55:11,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:11,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:11,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:11,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:11,015 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:11,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 627 transitions, 34146 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:11,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:11,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:11,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:12,511 INFO L129 PetriNetUnfolder]: 29/4026 cut-off events. [2021-06-10 14:55:12,511 INFO L130 PetriNetUnfolder]: For 197830/198818 co-relation queries the response was YES. [2021-06-10 14:55:12,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31443 conditions, 4026 events. 29/4026 cut-off events. For 197830/198818 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 64521 event pairs, 29 based on Foata normal form. 41/3969 useless extension candidates. Maximal degree in co-relation 31272. Up to 592 conditions per place. [2021-06-10 14:55:12,553 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 293 selfloop transitions, 318 changer transitions 2/631 dead transitions. [2021-06-10 14:55:12,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 631 transitions, 35424 flow [2021-06-10 14:55:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 14:55:12,554 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 14:55:12,554 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 14:55:12,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 14:55:12,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:12,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 14:55:12,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:12,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:12,555 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:12,555 INFO L185 Difference]: Start difference. First operand has 678 places, 627 transitions, 34146 flow. Second operand 8 states and 466 transitions. [2021-06-10 14:55:12,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 631 transitions, 35424 flow [2021-06-10 14:55:14,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 631 transitions, 34984 flow, removed 20 selfloop flow, removed 3 redundant places. [2021-06-10 14:55:14,355 INFO L241 Difference]: Finished difference. Result has 683 places, 626 transitions, 34306 flow [2021-06-10 14:55:14,356 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=33712, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=34306, PETRI_PLACES=683, PETRI_TRANSITIONS=626} [2021-06-10 14:55:14,356 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 639 predicate places. [2021-06-10 14:55:14,356 INFO L480 AbstractCegarLoop]: Abstraction has has 683 places, 626 transitions, 34306 flow [2021-06-10 14:55:14,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:14,356 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:14,356 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:14,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-10 14:55:14,357 INFO L428 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:14,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:14,357 INFO L82 PathProgramCache]: Analyzing trace with hash 83569695, now seen corresponding path program 175 times [2021-06-10 14:55:14,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:14,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204960828] [2021-06-10 14:55:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:14,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:14,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:14,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:14,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:14,369 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:14,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:14,380 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:14,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:14,397 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:14,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:14,417 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:55:14,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:55:14,435 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:14,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:14,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204960828] [2021-06-10 14:55:14,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:14,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:14,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889166530] [2021-06-10 14:55:14,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:14,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:14,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:14,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:14,454 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:14,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 626 transitions, 34306 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:14,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:14,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:14,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:15,974 INFO L129 PetriNetUnfolder]: 29/4015 cut-off events. [2021-06-10 14:55:15,974 INFO L130 PetriNetUnfolder]: For 197980/198968 co-relation queries the response was YES. [2021-06-10 14:55:16,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31587 conditions, 4015 events. 29/4015 cut-off events. For 197980/198968 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 64279 event pairs, 29 based on Foata normal form. 41/3958 useless extension candidates. Maximal degree in co-relation 31415. Up to 592 conditions per place. [2021-06-10 14:55:16,015 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 292 selfloop transitions, 317 changer transitions 3/630 dead transitions. [2021-06-10 14:55:16,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 630 transitions, 35546 flow [2021-06-10 14:55:16,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:16,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:16,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:16,016 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:16,016 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:16,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:16,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:16,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:16,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:16,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:16,017 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:16,017 INFO L185 Difference]: Start difference. First operand has 683 places, 626 transitions, 34306 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:16,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 630 transitions, 35546 flow [2021-06-10 14:55:17,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 630 transitions, 34960 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 14:55:17,851 INFO L241 Difference]: Finished difference. Result has 685 places, 623 transitions, 34210 flow [2021-06-10 14:55:17,852 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=33728, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=34210, PETRI_PLACES=685, PETRI_TRANSITIONS=623} [2021-06-10 14:55:17,852 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 641 predicate places. [2021-06-10 14:55:17,852 INFO L480 AbstractCegarLoop]: Abstraction has has 685 places, 623 transitions, 34210 flow [2021-06-10 14:55:17,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:17,852 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:17,852 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:17,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-10 14:55:17,852 INFO L428 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:17,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:17,853 INFO L82 PathProgramCache]: Analyzing trace with hash -896278509, now seen corresponding path program 176 times [2021-06-10 14:55:17,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:17,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089354576] [2021-06-10 14:55:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:17,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:17,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:17,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:17,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:17,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:17,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:17,879 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:17,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:17,898 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:55:17,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:55:17,916 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:55:17,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:55:17,936 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:17,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:17,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089354576] [2021-06-10 14:55:17,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:17,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:17,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251101624] [2021-06-10 14:55:17,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:17,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:17,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:17,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:17,956 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:17,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 623 transitions, 34210 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:17,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:17,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:17,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:19,477 INFO L129 PetriNetUnfolder]: 29/4002 cut-off events. [2021-06-10 14:55:19,477 INFO L130 PetriNetUnfolder]: For 197449/198437 co-relation queries the response was YES. [2021-06-10 14:55:19,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31564 conditions, 4002 events. 29/4002 cut-off events. For 197449/198437 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 64063 event pairs, 29 based on Foata normal form. 41/3945 useless extension candidates. Maximal degree in co-relation 31392. Up to 592 conditions per place. [2021-06-10 14:55:19,517 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 280 selfloop transitions, 326 changer transitions 3/627 dead transitions. [2021-06-10 14:55:19,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 627 transitions, 35444 flow [2021-06-10 14:55:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:19,518 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:19,518 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:19,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:19,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:19,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:19,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:19,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:19,519 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:19,519 INFO L185 Difference]: Start difference. First operand has 685 places, 623 transitions, 34210 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:19,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 627 transitions, 35444 flow [2021-06-10 14:55:21,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 686 places, 627 transitions, 34807 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 14:55:21,175 INFO L241 Difference]: Finished difference. Result has 687 places, 620 transitions, 34059 flow [2021-06-10 14:55:21,175 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=33581, PETRI_DIFFERENCE_MINUEND_PLACES=679, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=34059, PETRI_PLACES=687, PETRI_TRANSITIONS=620} [2021-06-10 14:55:21,175 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 643 predicate places. [2021-06-10 14:55:21,175 INFO L480 AbstractCegarLoop]: Abstraction has has 687 places, 620 transitions, 34059 flow [2021-06-10 14:55:21,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:21,175 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:21,175 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:21,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-10 14:55:21,175 INFO L428 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:21,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:21,176 INFO L82 PathProgramCache]: Analyzing trace with hash -351019883, now seen corresponding path program 177 times [2021-06-10 14:55:21,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:21,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713857085] [2021-06-10 14:55:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:21,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:21,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:21,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:21,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:21,187 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:21,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:21,199 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:21,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:21,218 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:55:21,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:55:21,239 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:21,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:21,258 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:21,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:21,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713857085] [2021-06-10 14:55:21,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:21,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:21,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120761076] [2021-06-10 14:55:21,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:21,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:21,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:21,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:21,277 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:21,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 620 transitions, 34059 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:21,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:21,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:21,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:22,784 INFO L129 PetriNetUnfolder]: 29/3987 cut-off events. [2021-06-10 14:55:22,784 INFO L130 PetriNetUnfolder]: For 196409/197387 co-relation queries the response was YES. [2021-06-10 14:55:22,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31437 conditions, 3987 events. 29/3987 cut-off events. For 196409/197387 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 63717 event pairs, 29 based on Foata normal form. 39/3928 useless extension candidates. Maximal degree in co-relation 31265. Up to 592 conditions per place. [2021-06-10 14:55:22,822 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 306 selfloop transitions, 313 changer transitions 2/639 dead transitions. [2021-06-10 14:55:22,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 639 transitions, 36065 flow [2021-06-10 14:55:22,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:22,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:22,823 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:22,823 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:22,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:22,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:22,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:22,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:22,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:22,824 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:22,824 INFO L185 Difference]: Start difference. First operand has 687 places, 620 transitions, 34059 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:22,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 639 transitions, 36065 flow [2021-06-10 14:55:24,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 685 places, 639 transitions, 35222 flow, removed 14 selfloop flow, removed 7 redundant places. [2021-06-10 14:55:24,535 INFO L241 Difference]: Finished difference. Result has 688 places, 626 transitions, 34226 flow [2021-06-10 14:55:24,535 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=33224, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=34226, PETRI_PLACES=688, PETRI_TRANSITIONS=626} [2021-06-10 14:55:24,535 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 644 predicate places. [2021-06-10 14:55:24,535 INFO L480 AbstractCegarLoop]: Abstraction has has 688 places, 626 transitions, 34226 flow [2021-06-10 14:55:24,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:24,535 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:24,535 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:24,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-10 14:55:24,535 INFO L428 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:24,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:24,536 INFO L82 PathProgramCache]: Analyzing trace with hash -864271919, now seen corresponding path program 178 times [2021-06-10 14:55:24,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:24,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939149386] [2021-06-10 14:55:24,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:24,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:24,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:24,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:24,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:24,547 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:24,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:24,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:24,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:24,580 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:55:24,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:55:24,605 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:24,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:24,623 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:24,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:24,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:24,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939149386] [2021-06-10 14:55:24,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:24,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:24,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664640409] [2021-06-10 14:55:24,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:24,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:24,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:24,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:24,642 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:24,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 626 transitions, 34226 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:24,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:24,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:24,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:26,172 INFO L129 PetriNetUnfolder]: 29/3976 cut-off events. [2021-06-10 14:55:26,172 INFO L130 PetriNetUnfolder]: For 196563/197539 co-relation queries the response was YES. [2021-06-10 14:55:26,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31242 conditions, 3976 events. 29/3976 cut-off events. For 196563/197539 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 63484 event pairs, 29 based on Foata normal form. 39/3917 useless extension candidates. Maximal degree in co-relation 31069. Up to 592 conditions per place. [2021-06-10 14:55:26,212 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 307 selfloop transitions, 310 changer transitions 2/637 dead transitions. [2021-06-10 14:55:26,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 637 transitions, 35826 flow [2021-06-10 14:55:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:26,213 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:26,213 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:26,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:26,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:26,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:26,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:26,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:26,214 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:26,214 INFO L185 Difference]: Start difference. First operand has 688 places, 626 transitions, 34226 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:26,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 637 transitions, 35826 flow [2021-06-10 14:55:27,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 690 places, 637 transitions, 35232 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-06-10 14:55:27,852 INFO L241 Difference]: Finished difference. Result has 691 places, 624 transitions, 34143 flow [2021-06-10 14:55:27,852 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=33640, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=34143, PETRI_PLACES=691, PETRI_TRANSITIONS=624} [2021-06-10 14:55:27,852 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 647 predicate places. [2021-06-10 14:55:27,853 INFO L480 AbstractCegarLoop]: Abstraction has has 691 places, 624 transitions, 34143 flow [2021-06-10 14:55:27,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:27,853 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:27,853 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:27,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-10 14:55:27,853 INFO L428 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:27,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:27,853 INFO L82 PathProgramCache]: Analyzing trace with hash 250206645, now seen corresponding path program 179 times [2021-06-10 14:55:27,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:27,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605630985] [2021-06-10 14:55:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:27,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:27,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:27,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:27,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:27,864 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:27,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:27,877 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:27,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:27,894 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:55:27,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:55:27,915 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:55:27,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:55:27,934 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:27,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:27,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605630985] [2021-06-10 14:55:27,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:27,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:27,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327892307] [2021-06-10 14:55:27,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:27,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:27,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:27,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:27,955 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:27,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 624 transitions, 34143 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:27,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:27,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:27,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:29,400 INFO L129 PetriNetUnfolder]: 29/3965 cut-off events. [2021-06-10 14:55:29,400 INFO L130 PetriNetUnfolder]: For 195983/196954 co-relation queries the response was YES. [2021-06-10 14:55:29,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31220 conditions, 3965 events. 29/3965 cut-off events. For 195983/196954 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 63306 event pairs, 29 based on Foata normal form. 41/3908 useless extension candidates. Maximal degree in co-relation 31047. Up to 592 conditions per place. [2021-06-10 14:55:29,440 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 304 selfloop transitions, 310 changer transitions 3/635 dead transitions. [2021-06-10 14:55:29,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 635 transitions, 35739 flow [2021-06-10 14:55:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:29,441 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:29,441 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:29,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:29,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:29,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:29,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:29,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:29,442 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:29,442 INFO L185 Difference]: Start difference. First operand has 691 places, 624 transitions, 34143 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:29,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 696 places, 635 transitions, 35739 flow [2021-06-10 14:55:31,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 635 transitions, 35066 flow, removed 11 selfloop flow, removed 8 redundant places. [2021-06-10 14:55:31,064 INFO L241 Difference]: Finished difference. Result has 689 places, 621 transitions, 33961 flow [2021-06-10 14:55:31,065 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=33478, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33961, PETRI_PLACES=689, PETRI_TRANSITIONS=621} [2021-06-10 14:55:31,065 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 645 predicate places. [2021-06-10 14:55:31,065 INFO L480 AbstractCegarLoop]: Abstraction has has 689 places, 621 transitions, 33961 flow [2021-06-10 14:55:31,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:31,065 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:31,065 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:31,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-10 14:55:31,065 INFO L428 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:31,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:31,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1059745901, now seen corresponding path program 180 times [2021-06-10 14:55:31,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:31,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187372021] [2021-06-10 14:55:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:31,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:31,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:31,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:31,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:31,076 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:31,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:31,088 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:31,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:31,106 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:55:31,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:55:31,119 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:31,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:31,139 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:31,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:31,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187372021] [2021-06-10 14:55:31,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:31,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:31,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763347003] [2021-06-10 14:55:31,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:31,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:31,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:31,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:31,157 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:31,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 689 places, 621 transitions, 33961 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:31,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:31,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:31,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:32,560 INFO L129 PetriNetUnfolder]: 29/3952 cut-off events. [2021-06-10 14:55:32,560 INFO L130 PetriNetUnfolder]: For 194327/195278 co-relation queries the response was YES. [2021-06-10 14:55:32,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31123 conditions, 3952 events. 29/3952 cut-off events. For 194327/195278 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 63096 event pairs, 29 based on Foata normal form. 41/3895 useless extension candidates. Maximal degree in co-relation 30953. Up to 592 conditions per place. [2021-06-10 14:55:32,599 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 299 selfloop transitions, 313 changer transitions 2/632 dead transitions. [2021-06-10 14:55:32,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 632 transitions, 35551 flow [2021-06-10 14:55:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:32,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:32,600 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:32,600 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:32,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:32,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:32,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:32,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:32,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:32,601 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:32,601 INFO L185 Difference]: Start difference. First operand has 689 places, 621 transitions, 33961 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:32,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 632 transitions, 35551 flow [2021-06-10 14:55:34,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 632 transitions, 34973 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-06-10 14:55:34,303 INFO L241 Difference]: Finished difference. Result has 693 places, 626 transitions, 34289 flow [2021-06-10 14:55:34,303 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=33391, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=34289, PETRI_PLACES=693, PETRI_TRANSITIONS=626} [2021-06-10 14:55:34,303 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 649 predicate places. [2021-06-10 14:55:34,303 INFO L480 AbstractCegarLoop]: Abstraction has has 693 places, 626 transitions, 34289 flow [2021-06-10 14:55:34,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:34,304 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:34,304 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:34,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-10 14:55:34,304 INFO L428 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:34,304 INFO L82 PathProgramCache]: Analyzing trace with hash -443846217, now seen corresponding path program 181 times [2021-06-10 14:55:34,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:34,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919200520] [2021-06-10 14:55:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:34,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:34,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:34,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:34,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:34,325 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:55:34,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:55:34,337 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:34,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:34,356 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:55:34,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:55:34,372 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:34,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:34,393 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:34,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:34,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919200520] [2021-06-10 14:55:34,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:34,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:34,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047645948] [2021-06-10 14:55:34,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:34,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:34,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:34,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:34,412 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:34,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 626 transitions, 34289 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:34,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:34,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:34,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:35,972 INFO L129 PetriNetUnfolder]: 29/3944 cut-off events. [2021-06-10 14:55:35,973 INFO L130 PetriNetUnfolder]: For 195170/196121 co-relation queries the response was YES. [2021-06-10 14:55:35,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31143 conditions, 3944 events. 29/3944 cut-off events. For 195170/196121 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 62897 event pairs, 29 based on Foata normal form. 41/3888 useless extension candidates. Maximal degree in co-relation 30972. Up to 592 conditions per place. [2021-06-10 14:55:36,004 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 298 selfloop transitions, 311 changer transitions 3/630 dead transitions. [2021-06-10 14:55:36,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 630 transitions, 35529 flow [2021-06-10 14:55:36,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:36,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:36,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:36,005 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:36,005 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:36,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:36,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:36,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:36,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:36,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:36,006 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:36,006 INFO L185 Difference]: Start difference. First operand has 693 places, 626 transitions, 34289 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:36,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 630 transitions, 35529 flow [2021-06-10 14:55:37,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 695 places, 630 transitions, 35103 flow, removed 13 selfloop flow, removed 3 redundant places. [2021-06-10 14:55:37,512 INFO L241 Difference]: Finished difference. Result has 696 places, 623 transitions, 34317 flow [2021-06-10 14:55:37,513 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=33871, PETRI_DIFFERENCE_MINUEND_PLACES=688, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=34317, PETRI_PLACES=696, PETRI_TRANSITIONS=623} [2021-06-10 14:55:37,513 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 652 predicate places. [2021-06-10 14:55:37,513 INFO L480 AbstractCegarLoop]: Abstraction has has 696 places, 623 transitions, 34317 flow [2021-06-10 14:55:37,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:37,513 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:37,513 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:37,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-10 14:55:37,513 INFO L428 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:37,513 INFO L82 PathProgramCache]: Analyzing trace with hash 835886427, now seen corresponding path program 182 times [2021-06-10 14:55:37,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:37,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146592609] [2021-06-10 14:55:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:37,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:37,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:37,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:37,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:37,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:37,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:55:37,532 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:37,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:37,550 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:55:37,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:55:37,564 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:55:37,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:55:37,583 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:37,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:37,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146592609] [2021-06-10 14:55:37,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:37,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:37,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305411147] [2021-06-10 14:55:37,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:37,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:37,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:37,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:37,601 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:37,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 623 transitions, 34317 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:37,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:37,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:37,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:39,124 INFO L129 PetriNetUnfolder]: 23/4091 cut-off events. [2021-06-10 14:55:39,125 INFO L130 PetriNetUnfolder]: For 200073/201019 co-relation queries the response was YES. [2021-06-10 14:55:39,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32124 conditions, 4091 events. 23/4091 cut-off events. For 200073/201019 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 65749 event pairs, 17 based on Foata normal form. 23/4016 useless extension candidates. Maximal degree in co-relation 31953. Up to 606 conditions per place. [2021-06-10 14:55:39,179 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 425 selfloop transitions, 246 changer transitions 2/691 dead transitions. [2021-06-10 14:55:39,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 691 transitions, 38671 flow [2021-06-10 14:55:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:39,180 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:39,180 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:39,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:39,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:39,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:39,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:39,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:39,180 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:39,180 INFO L185 Difference]: Start difference. First operand has 696 places, 623 transitions, 34317 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:39,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 691 transitions, 38671 flow [2021-06-10 14:55:40,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 691 transitions, 38004 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-06-10 14:55:40,917 INFO L241 Difference]: Finished difference. Result has 701 places, 640 transitions, 35258 flow [2021-06-10 14:55:40,917 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=33702, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=35258, PETRI_PLACES=701, PETRI_TRANSITIONS=640} [2021-06-10 14:55:40,917 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 657 predicate places. [2021-06-10 14:55:40,917 INFO L480 AbstractCegarLoop]: Abstraction has has 701 places, 640 transitions, 35258 flow [2021-06-10 14:55:40,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:40,917 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:40,917 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:40,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-10 14:55:40,918 INFO L428 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:40,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:40,918 INFO L82 PathProgramCache]: Analyzing trace with hash -2035075195, now seen corresponding path program 183 times [2021-06-10 14:55:40,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:40,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366367514] [2021-06-10 14:55:40,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:40,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:40,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:40,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:40,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:40,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:40,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:55:40,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:40,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:55:40,949 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:55:40,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:55:40,963 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:40,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:40,988 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:40,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:41,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366367514] [2021-06-10 14:55:41,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:41,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:41,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953214820] [2021-06-10 14:55:41,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:41,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:41,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:41,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:41,007 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:41,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 640 transitions, 35258 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:41,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:41,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:41,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:42,525 INFO L129 PetriNetUnfolder]: 21/4113 cut-off events. [2021-06-10 14:55:42,525 INFO L130 PetriNetUnfolder]: For 204915/205866 co-relation queries the response was YES. [2021-06-10 14:55:42,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32338 conditions, 4113 events. 21/4113 cut-off events. For 204915/205866 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 66203 event pairs, 21 based on Foata normal form. 35/4050 useless extension candidates. Maximal degree in co-relation 32163. Up to 625 conditions per place. [2021-06-10 14:55:42,576 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 381 selfloop transitions, 276 changer transitions 2/677 dead transitions. [2021-06-10 14:55:42,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 707 places, 677 transitions, 38072 flow [2021-06-10 14:55:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:42,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:42,577 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:42,577 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:42,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:42,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:42,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:42,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:42,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:42,578 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:42,578 INFO L185 Difference]: Start difference. First operand has 701 places, 640 transitions, 35258 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:42,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 707 places, 677 transitions, 38072 flow [2021-06-10 14:55:44,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 702 places, 677 transitions, 37639 flow, removed 21 selfloop flow, removed 5 redundant places. [2021-06-10 14:55:44,423 INFO L241 Difference]: Finished difference. Result has 706 places, 648 transitions, 35885 flow [2021-06-10 14:55:44,424 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=34853, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=35885, PETRI_PLACES=706, PETRI_TRANSITIONS=648} [2021-06-10 14:55:44,424 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 662 predicate places. [2021-06-10 14:55:44,424 INFO L480 AbstractCegarLoop]: Abstraction has has 706 places, 648 transitions, 35885 flow [2021-06-10 14:55:44,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:44,424 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:44,424 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:44,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-10 14:55:44,424 INFO L428 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:44,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:44,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1311513417, now seen corresponding path program 184 times [2021-06-10 14:55:44,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:44,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783021006] [2021-06-10 14:55:44,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:44,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:44,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:44,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:44,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:44,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:44,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:55:44,442 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:44,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:44,458 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:55:44,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:55:44,471 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:44,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:44,489 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:44,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:44,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783021006] [2021-06-10 14:55:44,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:44,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:44,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115636458] [2021-06-10 14:55:44,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:44,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:44,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:44,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:44,508 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:44,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 648 transitions, 35885 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:44,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:44,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:44,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:46,144 INFO L129 PetriNetUnfolder]: 21/4102 cut-off events. [2021-06-10 14:55:46,144 INFO L130 PetriNetUnfolder]: For 207642/208581 co-relation queries the response was YES. [2021-06-10 14:55:46,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32486 conditions, 4102 events. 21/4102 cut-off events. For 207642/208581 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 66113 event pairs, 21 based on Foata normal form. 37/4041 useless extension candidates. Maximal degree in co-relation 32309. Up to 625 conditions per place. [2021-06-10 14:55:46,181 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 391 selfloop transitions, 281 changer transitions 2/692 dead transitions. [2021-06-10 14:55:46,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 692 transitions, 39053 flow [2021-06-10 14:55:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:46,182 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:46,182 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:46,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:46,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:46,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:46,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:46,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:46,182 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:46,182 INFO L185 Difference]: Start difference. First operand has 706 places, 648 transitions, 35885 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:46,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 712 places, 692 transitions, 39053 flow [2021-06-10 14:55:47,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 692 transitions, 38664 flow, removed 16 selfloop flow, removed 4 redundant places. [2021-06-10 14:55:47,932 INFO L241 Difference]: Finished difference. Result has 712 places, 665 transitions, 37137 flow [2021-06-10 14:55:47,933 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=35504, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=37137, PETRI_PLACES=712, PETRI_TRANSITIONS=665} [2021-06-10 14:55:47,933 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 668 predicate places. [2021-06-10 14:55:47,933 INFO L480 AbstractCegarLoop]: Abstraction has has 712 places, 665 transitions, 37137 flow [2021-06-10 14:55:47,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:47,933 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:47,933 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:47,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-10 14:55:47,933 INFO L428 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:47,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:47,933 INFO L82 PathProgramCache]: Analyzing trace with hash 947648981, now seen corresponding path program 185 times [2021-06-10 14:55:47,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:47,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241368721] [2021-06-10 14:55:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:47,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:47,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:47,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:47,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:47,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:47,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:55:47,952 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:55:47,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:55:47,967 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:47,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:47,987 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:55:47,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:55:48,006 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:48,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:48,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241368721] [2021-06-10 14:55:48,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:48,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:48,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828103806] [2021-06-10 14:55:48,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:48,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:48,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:48,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:48,024 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:48,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 665 transitions, 37137 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:48,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:48,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:48,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:49,667 INFO L129 PetriNetUnfolder]: 21/4091 cut-off events. [2021-06-10 14:55:49,667 INFO L130 PetriNetUnfolder]: For 213321/214260 co-relation queries the response was YES. [2021-06-10 14:55:49,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32775 conditions, 4091 events. 21/4091 cut-off events. For 213321/214260 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 65793 event pairs, 21 based on Foata normal form. 37/4030 useless extension candidates. Maximal degree in co-relation 32596. Up to 625 conditions per place. [2021-06-10 14:55:49,710 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 354 selfloop transitions, 303 changer transitions 2/677 dead transitions. [2021-06-10 14:55:49,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 677 transitions, 38779 flow [2021-06-10 14:55:49,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:49,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:49,711 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:49,711 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:49,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:49,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:49,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:49,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:49,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:49,712 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:49,712 INFO L185 Difference]: Start difference. First operand has 712 places, 665 transitions, 37137 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:49,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 677 transitions, 38779 flow [2021-06-10 14:55:51,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 714 places, 677 transitions, 38325 flow, removed 27 selfloop flow, removed 4 redundant places. [2021-06-10 14:55:51,573 INFO L241 Difference]: Finished difference. Result has 715 places, 663 transitions, 37176 flow [2021-06-10 14:55:51,573 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36691, PETRI_DIFFERENCE_MINUEND_PLACES=707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=37176, PETRI_PLACES=715, PETRI_TRANSITIONS=663} [2021-06-10 14:55:51,573 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 671 predicate places. [2021-06-10 14:55:51,573 INFO L480 AbstractCegarLoop]: Abstraction has has 715 places, 663 transitions, 37176 flow [2021-06-10 14:55:51,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:51,573 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:51,573 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:51,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-10 14:55:51,573 INFO L428 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:51,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:51,574 INFO L82 PathProgramCache]: Analyzing trace with hash -819712983, now seen corresponding path program 186 times [2021-06-10 14:55:51,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:51,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115985966] [2021-06-10 14:55:51,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:51,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:51,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:51,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:51,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:51,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:51,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:55:51,592 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:55:51,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:55:51,606 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:51,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:51,625 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:55:51,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:55:51,649 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:51,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:51,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:51,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115985966] [2021-06-10 14:55:51,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:51,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:51,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147054630] [2021-06-10 14:55:51,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:51,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:51,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:51,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:51,667 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:51,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 715 places, 663 transitions, 37176 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:51,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:51,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:51,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:53,316 INFO L129 PetriNetUnfolder]: 21/4080 cut-off events. [2021-06-10 14:55:53,316 INFO L130 PetriNetUnfolder]: For 213068/214007 co-relation queries the response was YES. [2021-06-10 14:55:53,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32828 conditions, 4080 events. 21/4080 cut-off events. For 213068/214007 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 65650 event pairs, 21 based on Foata normal form. 37/4019 useless extension candidates. Maximal degree in co-relation 32649. Up to 625 conditions per place. [2021-06-10 14:55:53,369 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 354 selfloop transitions, 300 changer transitions 3/675 dead transitions. [2021-06-10 14:55:53,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 721 places, 675 transitions, 38814 flow [2021-06-10 14:55:53,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:53,370 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:53,370 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:53,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:53,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:53,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:53,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:53,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:53,371 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:53,371 INFO L185 Difference]: Start difference. First operand has 715 places, 663 transitions, 37176 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:53,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 721 places, 675 transitions, 38814 flow [2021-06-10 14:55:55,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 717 places, 675 transitions, 38373 flow, removed 38 selfloop flow, removed 4 redundant places. [2021-06-10 14:55:55,326 INFO L241 Difference]: Finished difference. Result has 718 places, 660 transitions, 37201 flow [2021-06-10 14:55:55,327 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36743, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=37201, PETRI_PLACES=718, PETRI_TRANSITIONS=660} [2021-06-10 14:55:55,327 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 674 predicate places. [2021-06-10 14:55:55,327 INFO L480 AbstractCegarLoop]: Abstraction has has 718 places, 660 transitions, 37201 flow [2021-06-10 14:55:55,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:55,327 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:55,327 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:55,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-10 14:55:55,328 INFO L428 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:55,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:55,328 INFO L82 PathProgramCache]: Analyzing trace with hash 922559243, now seen corresponding path program 187 times [2021-06-10 14:55:55,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:55,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131073362] [2021-06-10 14:55:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:55,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:55,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:55,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:55,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:55,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:55,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:55:55,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:55,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:55,361 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:55:55,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:55:55,375 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:55:55,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:55:55,394 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:55,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:55,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131073362] [2021-06-10 14:55:55,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:55,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:55,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217888141] [2021-06-10 14:55:55,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:55,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:55,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:55,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:55,413 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:55,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 718 places, 660 transitions, 37201 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:55,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:55,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:55,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:55:56,963 INFO L129 PetriNetUnfolder]: 21/4067 cut-off events. [2021-06-10 14:55:56,963 INFO L130 PetriNetUnfolder]: For 212720/213657 co-relation queries the response was YES. [2021-06-10 14:55:56,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32918 conditions, 4067 events. 21/4067 cut-off events. For 212720/213657 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 65404 event pairs, 21 based on Foata normal form. 37/4006 useless extension candidates. Maximal degree in co-relation 32740. Up to 625 conditions per place. [2021-06-10 14:55:57,009 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 389 selfloop transitions, 276 changer transitions 2/685 dead transitions. [2021-06-10 14:55:57,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 685 transitions, 39463 flow [2021-06-10 14:55:57,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:55:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:55:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:55:57,017 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:55:57,018 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:55:57,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:55:57,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:55:57,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:55:57,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:57,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:57,018 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:57,018 INFO L185 Difference]: Start difference. First operand has 718 places, 660 transitions, 37201 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:55:57,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 685 transitions, 39463 flow [2021-06-10 14:55:58,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 717 places, 685 transitions, 38482 flow, removed 5 selfloop flow, removed 7 redundant places. [2021-06-10 14:55:58,992 INFO L241 Difference]: Finished difference. Result has 719 places, 659 transitions, 36766 flow [2021-06-10 14:55:58,993 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36249, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36766, PETRI_PLACES=719, PETRI_TRANSITIONS=659} [2021-06-10 14:55:58,993 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 675 predicate places. [2021-06-10 14:55:58,993 INFO L480 AbstractCegarLoop]: Abstraction has has 719 places, 659 transitions, 36766 flow [2021-06-10 14:55:58,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:58,993 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:55:58,993 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:55:58,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-10 14:55:58,993 INFO L428 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:55:58,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:55:58,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1396833557, now seen corresponding path program 188 times [2021-06-10 14:55:58,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:55:58,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842355093] [2021-06-10 14:55:58,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:55:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:55:59,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:59,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:55:59,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:59,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:55:59,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:55:59,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:55:59,011 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:55:59,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:55:59,027 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:55:59,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:55:59,050 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:55:59,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:55:59,068 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:55:59,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:55:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:55:59,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842355093] [2021-06-10 14:55:59,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:55:59,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:55:59,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125779167] [2021-06-10 14:55:59,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:55:59,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:55:59,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:55:59,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:55:59,086 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:55:59,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 659 transitions, 36766 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:55:59,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:55:59,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:55:59,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:00,698 INFO L129 PetriNetUnfolder]: 21/4056 cut-off events. [2021-06-10 14:56:00,698 INFO L130 PetriNetUnfolder]: For 209045/209977 co-relation queries the response was YES. [2021-06-10 14:56:00,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32605 conditions, 4056 events. 21/4056 cut-off events. For 209045/209977 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 65138 event pairs, 21 based on Foata normal form. 35/3993 useless extension candidates. Maximal degree in co-relation 32426. Up to 625 conditions per place. [2021-06-10 14:56:00,739 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 383 selfloop transitions, 280 changer transitions 2/683 dead transitions. [2021-06-10 14:56:00,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 683 transitions, 38964 flow [2021-06-10 14:56:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:00,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:00,740 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:00,740 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:00,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:00,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:00,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:00,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:00,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:00,740 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:00,740 INFO L185 Difference]: Start difference. First operand has 719 places, 659 transitions, 36766 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:00,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 683 transitions, 38964 flow [2021-06-10 14:56:02,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 722 places, 683 transitions, 38598 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-06-10 14:56:02,507 INFO L241 Difference]: Finished difference. Result has 724 places, 663 transitions, 37187 flow [2021-06-10 14:56:02,507 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36408, PETRI_DIFFERENCE_MINUEND_PLACES=715, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=37187, PETRI_PLACES=724, PETRI_TRANSITIONS=663} [2021-06-10 14:56:02,507 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 680 predicate places. [2021-06-10 14:56:02,507 INFO L480 AbstractCegarLoop]: Abstraction has has 724 places, 663 transitions, 37187 flow [2021-06-10 14:56:02,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:02,507 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:02,507 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:02,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-06-10 14:56:02,507 INFO L428 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:02,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:02,508 INFO L82 PathProgramCache]: Analyzing trace with hash 931398883, now seen corresponding path program 189 times [2021-06-10 14:56:02,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:02,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576024056] [2021-06-10 14:56:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:02,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:02,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:02,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:02,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:02,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:02,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:02,526 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:56:02,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:56:02,541 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:56:02,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:56:02,562 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:56:02,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:56:02,581 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:02,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:02,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576024056] [2021-06-10 14:56:02,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:02,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:02,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973677079] [2021-06-10 14:56:02,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:02,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:02,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:02,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:02,599 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:02,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 663 transitions, 37187 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:02,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:02,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:02,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:04,194 INFO L129 PetriNetUnfolder]: 21/4047 cut-off events. [2021-06-10 14:56:04,195 INFO L130 PetriNetUnfolder]: For 211243/212175 co-relation queries the response was YES. [2021-06-10 14:56:04,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32792 conditions, 4047 events. 21/4047 cut-off events. For 211243/212175 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 64901 event pairs, 21 based on Foata normal form. 35/3985 useless extension candidates. Maximal degree in co-relation 32612. Up to 625 conditions per place. [2021-06-10 14:56:04,236 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 357 selfloop transitions, 298 changer transitions 2/675 dead transitions. [2021-06-10 14:56:04,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 730 places, 675 transitions, 38833 flow [2021-06-10 14:56:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:04,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:04,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:04,237 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:04,237 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:04,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:04,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:04,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:04,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:04,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:04,238 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:04,238 INFO L185 Difference]: Start difference. First operand has 724 places, 663 transitions, 37187 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:04,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 730 places, 675 transitions, 38833 flow [2021-06-10 14:56:06,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 675 transitions, 38307 flow, removed 21 selfloop flow, removed 4 redundant places. [2021-06-10 14:56:06,156 INFO L241 Difference]: Finished difference. Result has 727 places, 661 transitions, 37149 flow [2021-06-10 14:56:06,157 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36673, PETRI_DIFFERENCE_MINUEND_PLACES=719, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=37149, PETRI_PLACES=727, PETRI_TRANSITIONS=661} [2021-06-10 14:56:06,157 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 683 predicate places. [2021-06-10 14:56:06,157 INFO L480 AbstractCegarLoop]: Abstraction has has 727 places, 661 transitions, 37149 flow [2021-06-10 14:56:06,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:06,157 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:06,157 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:06,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-06-10 14:56:06,157 INFO L428 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:06,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:06,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1224048549, now seen corresponding path program 190 times [2021-06-10 14:56:06,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:06,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338064457] [2021-06-10 14:56:06,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:06,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:06,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:06,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:06,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:06,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:06,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:06,176 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:56:06,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:56:06,192 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:56:06,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:56:06,207 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:56:06,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:56:06,225 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:06,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:06,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338064457] [2021-06-10 14:56:06,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:06,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:06,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002330496] [2021-06-10 14:56:06,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:06,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:06,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:06,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:06,244 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:06,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 661 transitions, 37149 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:06,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:06,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:06,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:07,861 INFO L129 PetriNetUnfolder]: 21/4036 cut-off events. [2021-06-10 14:56:07,861 INFO L130 PetriNetUnfolder]: For 210166/211103 co-relation queries the response was YES. [2021-06-10 14:56:07,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32758 conditions, 4036 events. 21/4036 cut-off events. For 210166/211103 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 64735 event pairs, 21 based on Foata normal form. 37/3976 useless extension candidates. Maximal degree in co-relation 32578. Up to 625 conditions per place. [2021-06-10 14:56:07,905 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 355 selfloop transitions, 298 changer transitions 2/673 dead transitions. [2021-06-10 14:56:07,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 673 transitions, 38787 flow [2021-06-10 14:56:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:07,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:07,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:07,906 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:07,906 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:07,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:07,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:07,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:07,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:07,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:07,907 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:07,907 INFO L185 Difference]: Start difference. First operand has 727 places, 661 transitions, 37149 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:07,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 733 places, 673 transitions, 38787 flow [2021-06-10 14:56:09,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 729 places, 673 transitions, 38269 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-06-10 14:56:09,853 INFO L241 Difference]: Finished difference. Result has 730 places, 659 transitions, 37092 flow [2021-06-10 14:56:09,854 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36639, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=37092, PETRI_PLACES=730, PETRI_TRANSITIONS=659} [2021-06-10 14:56:09,854 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 686 predicate places. [2021-06-10 14:56:09,854 INFO L480 AbstractCegarLoop]: Abstraction has has 730 places, 659 transitions, 37092 flow [2021-06-10 14:56:09,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:09,854 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:09,854 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:09,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-06-10 14:56:09,854 INFO L428 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:09,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:09,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1531348795, now seen corresponding path program 191 times [2021-06-10 14:56:09,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:09,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44400847] [2021-06-10 14:56:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:09,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:09,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:09,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:09,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:09,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:09,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:09,873 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:56:09,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:56:09,888 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:56:09,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:56:09,902 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:56:09,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:56:09,927 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:09,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:09,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:09,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44400847] [2021-06-10 14:56:09,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:09,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:09,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022023700] [2021-06-10 14:56:09,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:09,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:09,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:09,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:09,945 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:09,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 730 places, 659 transitions, 37092 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:09,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:09,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:09,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:11,437 INFO L129 PetriNetUnfolder]: 21/4029 cut-off events. [2021-06-10 14:56:11,438 INFO L130 PetriNetUnfolder]: For 209602/210539 co-relation queries the response was YES. [2021-06-10 14:56:11,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32753 conditions, 4029 events. 21/4029 cut-off events. For 209602/210539 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 64667 event pairs, 21 based on Foata normal form. 37/3970 useless extension candidates. Maximal degree in co-relation 32573. Up to 625 conditions per place. [2021-06-10 14:56:11,481 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 354 selfloop transitions, 295 changer transitions 4/671 dead transitions. [2021-06-10 14:56:11,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 736 places, 671 transitions, 38726 flow [2021-06-10 14:56:11,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:11,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:11,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:11,482 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:11,482 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:11,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:11,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:11,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:11,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:11,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:11,483 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:11,483 INFO L185 Difference]: Start difference. First operand has 730 places, 659 transitions, 37092 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:11,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 736 places, 671 transitions, 38726 flow [2021-06-10 14:56:13,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 730 places, 671 transitions, 38072 flow, removed 19 selfloop flow, removed 6 redundant places. [2021-06-10 14:56:13,480 INFO L241 Difference]: Finished difference. Result has 731 places, 655 transitions, 36802 flow [2021-06-10 14:56:13,480 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36446, PETRI_DIFFERENCE_MINUEND_PLACES=723, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36802, PETRI_PLACES=731, PETRI_TRANSITIONS=655} [2021-06-10 14:56:13,480 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 687 predicate places. [2021-06-10 14:56:13,480 INFO L480 AbstractCegarLoop]: Abstraction has has 731 places, 655 transitions, 36802 flow [2021-06-10 14:56:13,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:13,480 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:13,480 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:13,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-06-10 14:56:13,481 INFO L428 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:13,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:13,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1216413461, now seen corresponding path program 192 times [2021-06-10 14:56:13,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:13,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209508384] [2021-06-10 14:56:13,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:13,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:13,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:13,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:13,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:13,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:13,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:13,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:56:13,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:56:13,515 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:56:13,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:56:13,537 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:56:13,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:56:13,556 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:13,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:13,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209508384] [2021-06-10 14:56:13,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:13,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:13,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125802584] [2021-06-10 14:56:13,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:13,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:13,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:13,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:13,576 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:13,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 655 transitions, 36802 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:13,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:13,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:13,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:15,173 INFO L129 PetriNetUnfolder]: 21/4012 cut-off events. [2021-06-10 14:56:15,173 INFO L130 PetriNetUnfolder]: For 205554/206491 co-relation queries the response was YES. [2021-06-10 14:56:15,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32612 conditions, 4012 events. 21/4012 cut-off events. For 205554/206491 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 64360 event pairs, 21 based on Foata normal form. 37/3953 useless extension candidates. Maximal degree in co-relation 32434. Up to 625 conditions per place. [2021-06-10 14:56:15,216 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 377 selfloop transitions, 275 changer transitions 3/673 dead transitions. [2021-06-10 14:56:15,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 736 places, 673 transitions, 38736 flow [2021-06-10 14:56:15,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:15,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:15,217 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:15,217 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:15,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:15,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:15,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:15,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:15,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:15,218 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:15,218 INFO L185 Difference]: Start difference. First operand has 731 places, 655 transitions, 36802 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:15,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 736 places, 673 transitions, 38736 flow [2021-06-10 14:56:17,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 730 places, 673 transitions, 38124 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-10 14:56:17,040 INFO L241 Difference]: Finished difference. Result has 732 places, 655 transitions, 36796 flow [2021-06-10 14:56:17,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36210, PETRI_DIFFERENCE_MINUEND_PLACES=723, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36796, PETRI_PLACES=732, PETRI_TRANSITIONS=655} [2021-06-10 14:56:17,041 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 688 predicate places. [2021-06-10 14:56:17,041 INFO L480 AbstractCegarLoop]: Abstraction has has 732 places, 655 transitions, 36796 flow [2021-06-10 14:56:17,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:17,041 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:17,041 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:17,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-06-10 14:56:17,041 INFO L428 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:17,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:17,041 INFO L82 PathProgramCache]: Analyzing trace with hash 586165317, now seen corresponding path program 193 times [2021-06-10 14:56:17,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:17,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485982157] [2021-06-10 14:56:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:17,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:17,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:17,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:17,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:17,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:17,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:17,059 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:56:17,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:56:17,074 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:56:17,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:56:17,094 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:56:17,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:56:17,112 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:17,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:17,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485982157] [2021-06-10 14:56:17,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:17,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:17,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279977621] [2021-06-10 14:56:17,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:17,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:17,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:17,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:17,130 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:17,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 655 transitions, 36796 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:17,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:17,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:17,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:18,644 INFO L129 PetriNetUnfolder]: 21/3999 cut-off events. [2021-06-10 14:56:18,644 INFO L130 PetriNetUnfolder]: For 204717/205649 co-relation queries the response was YES. [2021-06-10 14:56:18,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32523 conditions, 3999 events. 21/3999 cut-off events. For 204717/205649 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 64023 event pairs, 21 based on Foata normal form. 35/3938 useless extension candidates. Maximal degree in co-relation 32345. Up to 625 conditions per place. [2021-06-10 14:56:18,685 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 374 selfloop transitions, 276 changer transitions 2/670 dead transitions. [2021-06-10 14:56:18,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 670 transitions, 38537 flow [2021-06-10 14:56:18,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:18,686 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:18,686 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:18,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:18,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:18,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:18,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:18,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:18,687 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:18,687 INFO L185 Difference]: Start difference. First operand has 732 places, 655 transitions, 36796 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:18,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 738 places, 670 transitions, 38537 flow [2021-06-10 14:56:20,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 733 places, 670 transitions, 37987 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-06-10 14:56:20,508 INFO L241 Difference]: Finished difference. Result has 735 places, 656 transitions, 36866 flow [2021-06-10 14:56:20,509 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36254, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36866, PETRI_PLACES=735, PETRI_TRANSITIONS=656} [2021-06-10 14:56:20,509 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 691 predicate places. [2021-06-10 14:56:20,509 INFO L480 AbstractCegarLoop]: Abstraction has has 735 places, 656 transitions, 36866 flow [2021-06-10 14:56:20,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:20,509 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:20,509 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:20,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-06-10 14:56:20,509 INFO L428 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:20,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:20,509 INFO L82 PathProgramCache]: Analyzing trace with hash -994670107, now seen corresponding path program 194 times [2021-06-10 14:56:20,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:20,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544417342] [2021-06-10 14:56:20,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:20,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:20,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:20,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:20,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:20,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:20,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:20,527 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:56:20,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:56:20,543 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:56:20,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:56:20,563 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:56:20,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:56:20,582 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:20,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:20,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544417342] [2021-06-10 14:56:20,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:20,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:20,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783486715] [2021-06-10 14:56:20,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:20,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:20,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:20,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:20,601 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:20,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 735 places, 656 transitions, 36866 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:20,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:20,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:20,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:22,115 INFO L129 PetriNetUnfolder]: 21/3988 cut-off events. [2021-06-10 14:56:22,115 INFO L130 PetriNetUnfolder]: For 205394/206326 co-relation queries the response was YES. [2021-06-10 14:56:22,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32486 conditions, 3988 events. 21/3988 cut-off events. For 205394/206326 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 63814 event pairs, 21 based on Foata normal form. 35/3927 useless extension candidates. Maximal degree in co-relation 32307. Up to 625 conditions per place. [2021-06-10 14:56:22,156 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 372 selfloop transitions, 275 changer transitions 3/668 dead transitions. [2021-06-10 14:56:22,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 668 transitions, 38494 flow [2021-06-10 14:56:22,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:22,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:22,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:22,163 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:22,163 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:22,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:22,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:22,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:22,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:22,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:22,164 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:22,164 INFO L185 Difference]: Start difference. First operand has 735 places, 656 transitions, 36866 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:22,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 668 transitions, 38494 flow [2021-06-10 14:56:23,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 736 places, 668 transitions, 37982 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 14:56:24,018 INFO L241 Difference]: Finished difference. Result has 737 places, 653 transitions, 36750 flow [2021-06-10 14:56:24,018 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36362, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36750, PETRI_PLACES=737, PETRI_TRANSITIONS=653} [2021-06-10 14:56:24,019 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 693 predicate places. [2021-06-10 14:56:24,019 INFO L480 AbstractCegarLoop]: Abstraction has has 737 places, 653 transitions, 36750 flow [2021-06-10 14:56:24,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:24,019 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:24,019 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:24,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-06-10 14:56:24,019 INFO L428 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:24,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:24,019 INFO L82 PathProgramCache]: Analyzing trace with hash 854387345, now seen corresponding path program 195 times [2021-06-10 14:56:24,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:24,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48907310] [2021-06-10 14:56:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:24,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:24,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:24,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:24,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:24,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:24,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:24,037 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:56:24,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:56:24,046 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:56:24,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:56:24,067 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:56:24,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:56:24,089 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:24,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:24,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48907310] [2021-06-10 14:56:24,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:24,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:24,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338498402] [2021-06-10 14:56:24,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:24,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:24,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:24,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:24,109 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:24,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 737 places, 653 transitions, 36750 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:24,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:24,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:24,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:25,567 INFO L129 PetriNetUnfolder]: 21/3975 cut-off events. [2021-06-10 14:56:25,567 INFO L130 PetriNetUnfolder]: For 204552/205489 co-relation queries the response was YES. [2021-06-10 14:56:25,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32450 conditions, 3975 events. 21/3975 cut-off events. For 204552/205489 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 63586 event pairs, 21 based on Foata normal form. 37/3916 useless extension candidates. Maximal degree in co-relation 32272. Up to 625 conditions per place. [2021-06-10 14:56:25,616 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 371 selfloop transitions, 274 changer transitions 2/665 dead transitions. [2021-06-10 14:56:25,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 665 transitions, 38372 flow [2021-06-10 14:56:25,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:25,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:25,617 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:25,617 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:25,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:25,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:25,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:25,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:25,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:25,618 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:25,618 INFO L185 Difference]: Start difference. First operand has 737 places, 653 transitions, 36750 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:25,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 665 transitions, 38372 flow [2021-06-10 14:56:27,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 665 transitions, 37877 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-06-10 14:56:27,631 INFO L241 Difference]: Finished difference. Result has 741 places, 659 transitions, 37111 flow [2021-06-10 14:56:27,631 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36263, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=37111, PETRI_PLACES=741, PETRI_TRANSITIONS=659} [2021-06-10 14:56:27,632 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 697 predicate places. [2021-06-10 14:56:27,632 INFO L480 AbstractCegarLoop]: Abstraction has has 741 places, 659 transitions, 37111 flow [2021-06-10 14:56:27,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:27,632 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:27,632 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:27,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-06-10 14:56:27,632 INFO L428 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:27,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:27,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1562823291, now seen corresponding path program 196 times [2021-06-10 14:56:27,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:27,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331626278] [2021-06-10 14:56:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:27,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:27,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:27,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:27,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:27,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:27,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:27,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:56:27,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:56:27,660 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:56:27,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:56:27,674 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:56:27,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:56:27,693 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:27,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:27,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331626278] [2021-06-10 14:56:27,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:27,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:27,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408611678] [2021-06-10 14:56:27,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:27,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:27,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:27,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:27,711 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:27,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 741 places, 659 transitions, 37111 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:27,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:27,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:27,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:29,276 INFO L129 PetriNetUnfolder]: 21/3966 cut-off events. [2021-06-10 14:56:29,276 INFO L130 PetriNetUnfolder]: For 207544/208481 co-relation queries the response was YES. [2021-06-10 14:56:29,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32524 conditions, 3966 events. 21/3966 cut-off events. For 207544/208481 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 63421 event pairs, 21 based on Foata normal form. 37/3908 useless extension candidates. Maximal degree in co-relation 32345. Up to 625 conditions per place. [2021-06-10 14:56:29,312 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 360 selfloop transitions, 283 changer transitions 2/663 dead transitions. [2021-06-10 14:56:29,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 663 transitions, 38417 flow [2021-06-10 14:56:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:29,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:29,313 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:29,313 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:29,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:29,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:29,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:29,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:29,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:29,314 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:29,314 INFO L185 Difference]: Start difference. First operand has 741 places, 659 transitions, 37111 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:29,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 663 transitions, 38417 flow [2021-06-10 14:56:31,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 663 transitions, 38009 flow, removed 27 selfloop flow, removed 3 redundant places. [2021-06-10 14:56:31,141 INFO L241 Difference]: Finished difference. Result has 744 places, 657 transitions, 37112 flow [2021-06-10 14:56:31,142 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36711, PETRI_DIFFERENCE_MINUEND_PLACES=736, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=37112, PETRI_PLACES=744, PETRI_TRANSITIONS=657} [2021-06-10 14:56:31,142 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 700 predicate places. [2021-06-10 14:56:31,142 INFO L480 AbstractCegarLoop]: Abstraction has has 744 places, 657 transitions, 37112 flow [2021-06-10 14:56:31,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:31,142 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:31,142 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:31,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-06-10 14:56:31,142 INFO L428 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:31,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:31,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1300951653, now seen corresponding path program 197 times [2021-06-10 14:56:31,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:31,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022555655] [2021-06-10 14:56:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:31,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:31,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:31,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:31,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:31,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:31,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:31,160 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:56:31,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:56:31,170 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:56:31,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:56:31,184 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:56:31,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:56:31,202 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:31,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:31,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022555655] [2021-06-10 14:56:31,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:31,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:31,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352987331] [2021-06-10 14:56:31,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:31,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:31,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:31,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:31,221 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:31,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 657 transitions, 37112 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:31,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:31,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:31,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:32,759 INFO L129 PetriNetUnfolder]: 21/3959 cut-off events. [2021-06-10 14:56:32,759 INFO L130 PetriNetUnfolder]: For 206519/207456 co-relation queries the response was YES. [2021-06-10 14:56:32,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32592 conditions, 3959 events. 21/3959 cut-off events. For 206519/207456 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 63323 event pairs, 21 based on Foata normal form. 37/3902 useless extension candidates. Maximal degree in co-relation 32413. Up to 625 conditions per place. [2021-06-10 14:56:32,801 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 362 selfloop transitions, 279 changer transitions 2/661 dead transitions. [2021-06-10 14:56:32,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 749 places, 661 transitions, 38414 flow [2021-06-10 14:56:32,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:32,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:32,802 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:32,802 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:32,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:32,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:32,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:32,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:32,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:32,803 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:32,803 INFO L185 Difference]: Start difference. First operand has 744 places, 657 transitions, 37112 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:32,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 749 places, 661 transitions, 38414 flow [2021-06-10 14:56:34,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 745 places, 661 transitions, 37878 flow, removed 29 selfloop flow, removed 4 redundant places. [2021-06-10 14:56:34,694 INFO L241 Difference]: Finished difference. Result has 746 places, 655 transitions, 36996 flow [2021-06-10 14:56:34,694 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36584, PETRI_DIFFERENCE_MINUEND_PLACES=738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36996, PETRI_PLACES=746, PETRI_TRANSITIONS=655} [2021-06-10 14:56:34,694 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 702 predicate places. [2021-06-10 14:56:34,694 INFO L480 AbstractCegarLoop]: Abstraction has has 746 places, 655 transitions, 36996 flow [2021-06-10 14:56:34,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:34,694 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:34,694 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:34,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-06-10 14:56:34,694 INFO L428 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:34,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:34,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1733520387, now seen corresponding path program 198 times [2021-06-10 14:56:34,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:34,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339516020] [2021-06-10 14:56:34,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:34,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:34,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:34,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:34,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:34,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:34,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:34,712 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:56:34,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:56:34,721 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:56:34,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:56:34,744 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:56:34,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:56:34,761 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:34,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:34,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339516020] [2021-06-10 14:56:34,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:34,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:34,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868272723] [2021-06-10 14:56:34,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:34,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:34,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:34,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:34,779 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:34,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 655 transitions, 36996 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:34,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:34,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:34,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:36,330 INFO L129 PetriNetUnfolder]: 21/3948 cut-off events. [2021-06-10 14:56:36,330 INFO L130 PetriNetUnfolder]: For 204397/205329 co-relation queries the response was YES. [2021-06-10 14:56:36,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32478 conditions, 3948 events. 21/3948 cut-off events. For 204397/205329 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 63011 event pairs, 21 based on Foata normal form. 35/3890 useless extension candidates. Maximal degree in co-relation 32299. Up to 625 conditions per place. [2021-06-10 14:56:36,380 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 371 selfloop transitions, 268 changer transitions 2/659 dead transitions. [2021-06-10 14:56:36,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 751 places, 659 transitions, 38294 flow [2021-06-10 14:56:36,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:36,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:36,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:36,381 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:36,382 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:36,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:36,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:36,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:36,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:36,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:36,382 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:36,382 INFO L185 Difference]: Start difference. First operand has 746 places, 655 transitions, 36996 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:36,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 751 places, 659 transitions, 38294 flow [2021-06-10 14:56:38,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 745 places, 659 transitions, 37731 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-06-10 14:56:38,240 INFO L241 Difference]: Finished difference. Result has 746 places, 653 transitions, 36828 flow [2021-06-10 14:56:38,241 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36441, PETRI_DIFFERENCE_MINUEND_PLACES=738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36828, PETRI_PLACES=746, PETRI_TRANSITIONS=653} [2021-06-10 14:56:38,241 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 702 predicate places. [2021-06-10 14:56:38,241 INFO L480 AbstractCegarLoop]: Abstraction has has 746 places, 653 transitions, 36828 flow [2021-06-10 14:56:38,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:38,241 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:38,241 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:38,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-06-10 14:56:38,241 INFO L428 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:38,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1449778725, now seen corresponding path program 199 times [2021-06-10 14:56:38,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:38,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436653272] [2021-06-10 14:56:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:38,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:38,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:38,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:38,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:38,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:38,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:38,258 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:56:38,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:56:38,267 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:56:38,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:56:38,279 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:56:38,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:56:38,296 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:38,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:38,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436653272] [2021-06-10 14:56:38,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:38,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:38,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480671159] [2021-06-10 14:56:38,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:38,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:38,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:38,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:38,323 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:38,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 653 transitions, 36828 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:38,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:38,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:38,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:39,779 INFO L129 PetriNetUnfolder]: 21/3939 cut-off events. [2021-06-10 14:56:39,779 INFO L130 PetriNetUnfolder]: For 203350/204287 co-relation queries the response was YES. [2021-06-10 14:56:39,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32392 conditions, 3939 events. 21/3939 cut-off events. For 203350/204287 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 62883 event pairs, 21 based on Foata normal form. 37/3883 useless extension candidates. Maximal degree in co-relation 32214. Up to 625 conditions per place. [2021-06-10 14:56:39,818 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 367 selfloop transitions, 270 changer transitions 2/657 dead transitions. [2021-06-10 14:56:39,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 751 places, 657 transitions, 38122 flow [2021-06-10 14:56:39,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:39,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:39,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:39,819 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:39,819 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:39,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:39,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:39,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:39,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:39,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:39,820 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:39,820 INFO L185 Difference]: Start difference. First operand has 746 places, 653 transitions, 36828 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:39,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 751 places, 657 transitions, 38122 flow [2021-06-10 14:56:41,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 746 places, 657 transitions, 37587 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 14:56:41,714 INFO L241 Difference]: Finished difference. Result has 747 places, 651 transitions, 36684 flow [2021-06-10 14:56:41,715 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36301, PETRI_DIFFERENCE_MINUEND_PLACES=739, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36684, PETRI_PLACES=747, PETRI_TRANSITIONS=651} [2021-06-10 14:56:41,715 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 703 predicate places. [2021-06-10 14:56:41,715 INFO L480 AbstractCegarLoop]: Abstraction has has 747 places, 651 transitions, 36684 flow [2021-06-10 14:56:41,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:41,715 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:41,715 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:41,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-06-10 14:56:41,715 INFO L428 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:41,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:41,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1772792007, now seen corresponding path program 200 times [2021-06-10 14:56:41,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:41,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005763024] [2021-06-10 14:56:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:41,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:41,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:41,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:41,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:41,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:41,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:41,732 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:56:41,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:56:41,741 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:56:41,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:56:41,754 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:56:41,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:56:41,774 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:41,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:41,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005763024] [2021-06-10 14:56:41,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:41,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:41,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162288075] [2021-06-10 14:56:41,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:41,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:41,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:41,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:41,793 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:41,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 747 places, 651 transitions, 36684 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:41,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:41,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:41,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:43,346 INFO L129 PetriNetUnfolder]: 21/3930 cut-off events. [2021-06-10 14:56:43,346 INFO L130 PetriNetUnfolder]: For 202582/203391 co-relation queries the response was YES. [2021-06-10 14:56:43,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32304 conditions, 3930 events. 21/3930 cut-off events. For 202582/203391 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 62734 event pairs, 21 based on Foata normal form. 31/3868 useless extension candidates. Maximal degree in co-relation 32126. Up to 625 conditions per place. [2021-06-10 14:56:43,379 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 368 selfloop transitions, 267 changer transitions 2/655 dead transitions. [2021-06-10 14:56:43,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 655 transitions, 37974 flow [2021-06-10 14:56:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:43,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:43,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:43,380 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:43,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:43,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:43,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:43,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:43,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:43,381 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:43,381 INFO L185 Difference]: Start difference. First operand has 747 places, 651 transitions, 36684 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:43,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 655 transitions, 37974 flow [2021-06-10 14:56:45,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 655 transitions, 37820 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-06-10 14:56:45,087 INFO L241 Difference]: Finished difference. Result has 752 places, 649 transitions, 36944 flow [2021-06-10 14:56:45,088 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36538, PETRI_DIFFERENCE_MINUEND_PLACES=744, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36944, PETRI_PLACES=752, PETRI_TRANSITIONS=649} [2021-06-10 14:56:45,088 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 708 predicate places. [2021-06-10 14:56:45,088 INFO L480 AbstractCegarLoop]: Abstraction has has 752 places, 649 transitions, 36944 flow [2021-06-10 14:56:45,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:45,088 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:45,088 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:45,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-06-10 14:56:45,088 INFO L428 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:45,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:45,088 INFO L82 PathProgramCache]: Analyzing trace with hash 761419525, now seen corresponding path program 201 times [2021-06-10 14:56:45,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:45,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338130221] [2021-06-10 14:56:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:45,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:45,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:45,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:45,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:45,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:45,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:45,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:45,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:56:45,114 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:56:45,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:56:45,128 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:56:45,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:56:45,146 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:45,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:45,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338130221] [2021-06-10 14:56:45,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:45,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:45,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481923601] [2021-06-10 14:56:45,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:45,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:45,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:45,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:45,164 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:45,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 649 transitions, 36944 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:45,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:45,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:45,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:46,718 INFO L129 PetriNetUnfolder]: 21/3913 cut-off events. [2021-06-10 14:56:46,718 INFO L130 PetriNetUnfolder]: For 204678/205487 co-relation queries the response was YES. [2021-06-10 14:56:46,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32451 conditions, 3913 events. 21/3913 cut-off events. For 204678/205487 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 62414 event pairs, 21 based on Foata normal form. 31/3851 useless extension candidates. Maximal degree in co-relation 32273. Up to 625 conditions per place. [2021-06-10 14:56:46,759 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 367 selfloop transitions, 271 changer transitions 1/657 dead transitions. [2021-06-10 14:56:46,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 758 places, 657 transitions, 38432 flow [2021-06-10 14:56:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:46,760 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:46,760 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:46,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:46,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:46,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:46,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:46,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:46,763 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:46,763 INFO L185 Difference]: Start difference. First operand has 752 places, 649 transitions, 36944 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:46,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 758 places, 657 transitions, 38432 flow [2021-06-10 14:56:48,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 753 places, 657 transitions, 37893 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:56:48,647 INFO L241 Difference]: Finished difference. Result has 755 places, 652 transitions, 37128 flow [2021-06-10 14:56:48,647 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36421, PETRI_DIFFERENCE_MINUEND_PLACES=746, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=37128, PETRI_PLACES=755, PETRI_TRANSITIONS=652} [2021-06-10 14:56:48,647 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 711 predicate places. [2021-06-10 14:56:48,647 INFO L480 AbstractCegarLoop]: Abstraction has has 755 places, 652 transitions, 37128 flow [2021-06-10 14:56:48,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:48,648 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:48,648 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:48,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-06-10 14:56:48,648 INFO L428 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:48,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:48,648 INFO L82 PathProgramCache]: Analyzing trace with hash -325948761, now seen corresponding path program 202 times [2021-06-10 14:56:48,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:48,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613123322] [2021-06-10 14:56:48,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:48,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:48,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:48,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:48,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:48,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:48,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:48,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:48,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:56:48,682 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:56:48,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:56:48,701 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:56:48,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:56:48,720 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:48,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:48,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613123322] [2021-06-10 14:56:48,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:48,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:48,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590457362] [2021-06-10 14:56:48,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:48,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:48,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:48,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:48,738 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:48,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 652 transitions, 37128 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:48,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:48,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:48,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:50,244 INFO L129 PetriNetUnfolder]: 21/3906 cut-off events. [2021-06-10 14:56:50,244 INFO L130 PetriNetUnfolder]: For 205188/205992 co-relation queries the response was YES. [2021-06-10 14:56:50,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32424 conditions, 3906 events. 21/3906 cut-off events. For 205188/205992 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 62218 event pairs, 21 based on Foata normal form. 29/3843 useless extension candidates. Maximal degree in co-relation 32245. Up to 625 conditions per place. [2021-06-10 14:56:50,286 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 371 selfloop transitions, 264 changer transitions 2/655 dead transitions. [2021-06-10 14:56:50,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 655 transitions, 38414 flow [2021-06-10 14:56:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:50,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:50,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 14:56:50,287 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 14:56:50,287 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 14:56:50,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 14:56:50,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:50,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 14:56:50,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:50,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:50,288 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:50,288 INFO L185 Difference]: Start difference. First operand has 755 places, 652 transitions, 37128 flow. Second operand 8 states and 466 transitions. [2021-06-10 14:56:50,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 761 places, 655 transitions, 38414 flow [2021-06-10 14:56:52,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 655 transitions, 37796 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 14:56:52,155 INFO L241 Difference]: Finished difference. Result has 757 places, 650 transitions, 36930 flow [2021-06-10 14:56:52,155 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36516, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36930, PETRI_PLACES=757, PETRI_TRANSITIONS=650} [2021-06-10 14:56:52,155 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 713 predicate places. [2021-06-10 14:56:52,155 INFO L480 AbstractCegarLoop]: Abstraction has has 757 places, 650 transitions, 36930 flow [2021-06-10 14:56:52,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:52,156 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:52,156 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:52,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-06-10 14:56:52,156 INFO L428 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:52,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:52,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1608475227, now seen corresponding path program 203 times [2021-06-10 14:56:52,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:52,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897074689] [2021-06-10 14:56:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:52,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:52,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:52,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:52,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:52,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:52,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:52,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:52,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:56:52,188 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:56:52,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:56:52,202 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:56:52,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:56:52,220 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:52,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:52,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897074689] [2021-06-10 14:56:52,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:52,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:52,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075181612] [2021-06-10 14:56:52,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:52,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:52,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:52,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:52,239 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:52,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 757 places, 650 transitions, 36930 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:52,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:52,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:52,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:53,738 INFO L129 PetriNetUnfolder]: 21/3895 cut-off events. [2021-06-10 14:56:53,738 INFO L130 PetriNetUnfolder]: For 204367/205176 co-relation queries the response was YES. [2021-06-10 14:56:53,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32263 conditions, 3895 events. 21/3895 cut-off events. For 204367/205176 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 62049 event pairs, 21 based on Foata normal form. 31/3834 useless extension candidates. Maximal degree in co-relation 32084. Up to 625 conditions per place. [2021-06-10 14:56:53,778 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 364 selfloop transitions, 269 changer transitions 3/654 dead transitions. [2021-06-10 14:56:53,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 762 places, 654 transitions, 38218 flow [2021-06-10 14:56:53,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:56:53,779 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:56:53,779 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:56:53,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:56:53,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:53,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:56:53,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:53,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:53,780 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:53,780 INFO L185 Difference]: Start difference. First operand has 757 places, 650 transitions, 36930 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:56:53,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 762 places, 654 transitions, 38218 flow [2021-06-10 14:56:55,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 654 transitions, 37681 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:56:55,693 INFO L241 Difference]: Finished difference. Result has 757 places, 647 transitions, 36755 flow [2021-06-10 14:56:55,694 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36401, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36755, PETRI_PLACES=757, PETRI_TRANSITIONS=647} [2021-06-10 14:56:55,694 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 713 predicate places. [2021-06-10 14:56:55,694 INFO L480 AbstractCegarLoop]: Abstraction has has 757 places, 647 transitions, 36755 flow [2021-06-10 14:56:55,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:55,694 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:55,694 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:55,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-06-10 14:56:55,694 INFO L428 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:55,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:55,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1496907623, now seen corresponding path program 204 times [2021-06-10 14:56:55,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:55,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941010763] [2021-06-10 14:56:55,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:55,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:55,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:55,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:55,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:55,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:55,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:55,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:55,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:56:55,727 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:56:55,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:56:55,749 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:56:55,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:56:55,768 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:55,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:55,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941010763] [2021-06-10 14:56:55,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:55,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:55,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253543889] [2021-06-10 14:56:55,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:55,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:55,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:55,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:55,787 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:55,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 757 places, 647 transitions, 36755 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:55,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:55,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:55,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:56:57,360 INFO L129 PetriNetUnfolder]: 21/3880 cut-off events. [2021-06-10 14:56:57,360 INFO L130 PetriNetUnfolder]: For 203333/204142 co-relation queries the response was YES. [2021-06-10 14:56:57,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32123 conditions, 3880 events. 21/3880 cut-off events. For 203333/204142 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 61757 event pairs, 21 based on Foata normal form. 31/3819 useless extension candidates. Maximal degree in co-relation 31945. Up to 625 conditions per place. [2021-06-10 14:56:57,393 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 364 selfloop transitions, 265 changer transitions 3/650 dead transitions. [2021-06-10 14:56:57,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 763 places, 650 transitions, 38031 flow [2021-06-10 14:56:57,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:56:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:56:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 14:56:57,394 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 14:56:57,394 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 14:56:57,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 14:56:57,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:56:57,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 14:56:57,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:57,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:57,395 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:57,395 INFO L185 Difference]: Start difference. First operand has 757 places, 647 transitions, 36755 flow. Second operand 8 states and 466 transitions. [2021-06-10 14:56:57,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 763 places, 650 transitions, 38031 flow [2021-06-10 14:56:59,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 758 places, 650 transitions, 37499 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-06-10 14:56:59,074 INFO L241 Difference]: Finished difference. Result has 759 places, 644 transitions, 36595 flow [2021-06-10 14:56:59,074 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36229, PETRI_DIFFERENCE_MINUEND_PLACES=751, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36595, PETRI_PLACES=759, PETRI_TRANSITIONS=644} [2021-06-10 14:56:59,074 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 715 predicate places. [2021-06-10 14:56:59,074 INFO L480 AbstractCegarLoop]: Abstraction has has 759 places, 644 transitions, 36595 flow [2021-06-10 14:56:59,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:59,074 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:56:59,074 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:56:59,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-06-10 14:56:59,074 INFO L428 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:56:59,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:56:59,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1631906747, now seen corresponding path program 205 times [2021-06-10 14:56:59,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:56:59,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431906685] [2021-06-10 14:56:59,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:56:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:56:59,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:59,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:56:59,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:59,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:56:59,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:56:59,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:56:59,092 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:56:59,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:56:59,109 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:56:59,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:56:59,133 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:56:59,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:56:59,152 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:56:59,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:56:59,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:56:59,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431906685] [2021-06-10 14:56:59,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:56:59,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:56:59,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824335916] [2021-06-10 14:56:59,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:56:59,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:56:59,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:56:59,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:56:59,170 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:56:59,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 759 places, 644 transitions, 36595 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:56:59,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:56:59,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:56:59,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:00,645 INFO L129 PetriNetUnfolder]: 21/3867 cut-off events. [2021-06-10 14:57:00,645 INFO L130 PetriNetUnfolder]: For 202652/203419 co-relation queries the response was YES. [2021-06-10 14:57:00,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32023 conditions, 3867 events. 21/3867 cut-off events. For 202652/203419 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 61563 event pairs, 17 based on Foata normal form. 21/3796 useless extension candidates. Maximal degree in co-relation 31845. Up to 593 conditions per place. [2021-06-10 14:57:00,689 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 385 selfloop transitions, 273 changer transitions 2/678 dead transitions. [2021-06-10 14:57:00,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 764 places, 678 transitions, 39317 flow [2021-06-10 14:57:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:00,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:00,690 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:00,690 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:00,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:00,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:00,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:00,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:00,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:00,691 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:00,691 INFO L185 Difference]: Start difference. First operand has 759 places, 644 transitions, 36595 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:00,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 764 places, 678 transitions, 39317 flow [2021-06-10 14:57:02,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 761 places, 678 transitions, 38951 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-06-10 14:57:02,506 INFO L241 Difference]: Finished difference. Result has 764 places, 646 transitions, 36956 flow [2021-06-10 14:57:02,506 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36237, PETRI_DIFFERENCE_MINUEND_PLACES=754, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36956, PETRI_PLACES=764, PETRI_TRANSITIONS=646} [2021-06-10 14:57:02,507 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 720 predicate places. [2021-06-10 14:57:02,507 INFO L480 AbstractCegarLoop]: Abstraction has has 764 places, 646 transitions, 36956 flow [2021-06-10 14:57:02,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:02,507 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:02,507 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:02,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-06-10 14:57:02,507 INFO L428 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:02,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:02,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1552046699, now seen corresponding path program 206 times [2021-06-10 14:57:02,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:02,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91961600] [2021-06-10 14:57:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:02,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:02,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:02,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:02,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:02,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:02,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:02,524 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:02,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:02,534 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:57:02,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:57:02,548 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:02,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:02,566 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:02,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:02,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91961600] [2021-06-10 14:57:02,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:02,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:02,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945779669] [2021-06-10 14:57:02,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:02,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:02,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:02,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:02,585 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:02,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 764 places, 646 transitions, 36956 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:02,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:02,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:02,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:04,147 INFO L129 PetriNetUnfolder]: 17/3983 cut-off events. [2021-06-10 14:57:04,147 INFO L130 PetriNetUnfolder]: For 209738/210503 co-relation queries the response was YES. [2021-06-10 14:57:04,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33009 conditions, 3983 events. 17/3983 cut-off events. For 209738/210503 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 63764 event pairs, 17 based on Foata normal form. 19/3909 useless extension candidates. Maximal degree in co-relation 32829. Up to 620 conditions per place. [2021-06-10 14:57:04,186 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 445 selfloop transitions, 262 changer transitions 2/727 dead transitions. [2021-06-10 14:57:04,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 770 places, 727 transitions, 42619 flow [2021-06-10 14:57:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:04,187 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:04,187 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:04,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:04,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:04,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:04,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:04,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:04,188 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:04,188 INFO L185 Difference]: Start difference. First operand has 764 places, 646 transitions, 36956 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:04,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 770 places, 727 transitions, 42619 flow [2021-06-10 14:57:06,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 765 places, 727 transitions, 42112 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-06-10 14:57:06,092 INFO L241 Difference]: Finished difference. Result has 770 places, 668 transitions, 38403 flow [2021-06-10 14:57:06,092 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=36476, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=38403, PETRI_PLACES=770, PETRI_TRANSITIONS=668} [2021-06-10 14:57:06,092 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 726 predicate places. [2021-06-10 14:57:06,092 INFO L480 AbstractCegarLoop]: Abstraction has has 770 places, 668 transitions, 38403 flow [2021-06-10 14:57:06,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:06,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:06,092 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:06,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-06-10 14:57:06,093 INFO L428 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:06,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1628916267, now seen corresponding path program 207 times [2021-06-10 14:57:06,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:06,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971014834] [2021-06-10 14:57:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:06,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:06,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:06,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:06,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:06,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:06,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:06,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:06,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:06,120 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:57:06,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:57:06,134 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:57:06,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:57:06,153 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:06,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:06,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971014834] [2021-06-10 14:57:06,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:06,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:06,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244204118] [2021-06-10 14:57:06,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:06,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:06,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:06,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:06,172 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:06,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 668 transitions, 38403 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:06,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:06,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:06,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:07,737 INFO L129 PetriNetUnfolder]: 17/3974 cut-off events. [2021-06-10 14:57:07,737 INFO L130 PetriNetUnfolder]: For 214427/215266 co-relation queries the response was YES. [2021-06-10 14:57:07,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33132 conditions, 3974 events. 17/3974 cut-off events. For 214427/215266 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 63585 event pairs, 17 based on Foata normal form. 19/3901 useless extension candidates. Maximal degree in co-relation 32949. Up to 593 conditions per place. [2021-06-10 14:57:07,777 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 440 selfloop transitions, 260 changer transitions 2/720 dead transitions. [2021-06-10 14:57:07,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 776 places, 720 transitions, 42219 flow [2021-06-10 14:57:07,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:07,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:07,778 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:07,778 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:07,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:07,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:07,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:07,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:07,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:07,779 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:07,779 INFO L185 Difference]: Start difference. First operand has 770 places, 668 transitions, 38403 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:07,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 776 places, 720 transitions, 42219 flow [2021-06-10 14:57:09,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 773 places, 720 transitions, 42020 flow, removed 32 selfloop flow, removed 3 redundant places. [2021-06-10 14:57:09,807 INFO L241 Difference]: Finished difference. Result has 778 places, 678 transitions, 39485 flow [2021-06-10 14:57:09,807 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=38212, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39485, PETRI_PLACES=778, PETRI_TRANSITIONS=678} [2021-06-10 14:57:09,807 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 734 predicate places. [2021-06-10 14:57:09,807 INFO L480 AbstractCegarLoop]: Abstraction has has 778 places, 678 transitions, 39485 flow [2021-06-10 14:57:09,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:09,807 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:09,807 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:09,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-06-10 14:57:09,808 INFO L428 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:09,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:09,808 INFO L82 PathProgramCache]: Analyzing trace with hash 696399007, now seen corresponding path program 208 times [2021-06-10 14:57:09,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:09,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787935038] [2021-06-10 14:57:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:09,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:09,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:09,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:09,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:09,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:09,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:09,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:57:09,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:57:09,843 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:57:09,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:57:09,867 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:57:09,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:57:09,885 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:09,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:09,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:09,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787935038] [2021-06-10 14:57:09,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:09,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:09,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159683714] [2021-06-10 14:57:09,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:09,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:09,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:09,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:09,904 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:09,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 778 places, 678 transitions, 39485 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:09,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:09,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:09,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:11,568 INFO L129 PetriNetUnfolder]: 17/3963 cut-off events. [2021-06-10 14:57:11,568 INFO L130 PetriNetUnfolder]: For 220690/221532 co-relation queries the response was YES. [2021-06-10 14:57:11,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33438 conditions, 3963 events. 17/3963 cut-off events. For 220690/221532 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 63335 event pairs, 17 based on Foata normal form. 19/3890 useless extension candidates. Maximal degree in co-relation 33252. Up to 593 conditions per place. [2021-06-10 14:57:11,605 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 413 selfloop transitions, 272 changer transitions 2/705 dead transitions. [2021-06-10 14:57:11,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 784 places, 705 transitions, 41976 flow [2021-06-10 14:57:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:11,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:11,606 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:11,606 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:11,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:11,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:11,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:11,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:11,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:11,606 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:11,607 INFO L185 Difference]: Start difference. First operand has 778 places, 678 transitions, 39485 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:11,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 784 places, 705 transitions, 41976 flow [2021-06-10 14:57:13,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 780 places, 705 transitions, 41604 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-06-10 14:57:13,540 INFO L241 Difference]: Finished difference. Result has 782 places, 684 transitions, 40021 flow [2021-06-10 14:57:13,541 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39121, PETRI_DIFFERENCE_MINUEND_PLACES=773, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40021, PETRI_PLACES=782, PETRI_TRANSITIONS=684} [2021-06-10 14:57:13,541 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 738 predicate places. [2021-06-10 14:57:13,541 INFO L480 AbstractCegarLoop]: Abstraction has has 782 places, 684 transitions, 40021 flow [2021-06-10 14:57:13,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:13,541 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:13,541 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:13,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-06-10 14:57:13,541 INFO L428 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:13,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:13,541 INFO L82 PathProgramCache]: Analyzing trace with hash 929987053, now seen corresponding path program 209 times [2021-06-10 14:57:13,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:13,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303266789] [2021-06-10 14:57:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:13,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:13,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:13,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:13,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:13,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:13,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:13,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:57:13,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:57:13,576 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:57:13,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:57:13,601 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:13,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:13,619 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:13,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:13,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303266789] [2021-06-10 14:57:13,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:13,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:13,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579125377] [2021-06-10 14:57:13,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:13,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:13,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:13,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:13,637 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:13,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 782 places, 684 transitions, 40021 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:13,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:13,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:13,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:15,319 INFO L129 PetriNetUnfolder]: 17/3954 cut-off events. [2021-06-10 14:57:15,320 INFO L130 PetriNetUnfolder]: For 222110/222941 co-relation queries the response was YES. [2021-06-10 14:57:15,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33586 conditions, 3954 events. 17/3954 cut-off events. For 222110/222941 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 63165 event pairs, 17 based on Foata normal form. 19/3882 useless extension candidates. Maximal degree in co-relation 33400. Up to 593 conditions per place. [2021-06-10 14:57:15,361 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 413 selfloop transitions, 269 changer transitions 3/703 dead transitions. [2021-06-10 14:57:15,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 703 transitions, 42087 flow [2021-06-10 14:57:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:15,364 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:15,364 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:15,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:15,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:15,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:15,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:15,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:15,364 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:15,364 INFO L185 Difference]: Start difference. First operand has 782 places, 684 transitions, 40021 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:15,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 788 places, 703 transitions, 42087 flow [2021-06-10 14:57:17,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 783 places, 703 transitions, 41739 flow, removed 30 selfloop flow, removed 5 redundant places. [2021-06-10 14:57:17,361 INFO L241 Difference]: Finished difference. Result has 784 places, 681 transitions, 40042 flow [2021-06-10 14:57:17,361 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39681, PETRI_DIFFERENCE_MINUEND_PLACES=776, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40042, PETRI_PLACES=784, PETRI_TRANSITIONS=681} [2021-06-10 14:57:17,362 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 740 predicate places. [2021-06-10 14:57:17,362 INFO L480 AbstractCegarLoop]: Abstraction has has 784 places, 681 transitions, 40042 flow [2021-06-10 14:57:17,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:17,362 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:17,362 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:17,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-06-10 14:57:17,362 INFO L428 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:17,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:17,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1506389283, now seen corresponding path program 210 times [2021-06-10 14:57:17,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:17,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094876642] [2021-06-10 14:57:17,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:17,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:17,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:17,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:17,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:17,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:17,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:17,379 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:17,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:17,404 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:57:17,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:57:17,430 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:17,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:17,447 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:17,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:17,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094876642] [2021-06-10 14:57:17,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:17,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:17,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832928630] [2021-06-10 14:57:17,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:17,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:17,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:17,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:17,464 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:17,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 784 places, 681 transitions, 40042 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:17,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:17,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:17,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:19,094 INFO L129 PetriNetUnfolder]: 17/3941 cut-off events. [2021-06-10 14:57:19,094 INFO L130 PetriNetUnfolder]: For 222652/223491 co-relation queries the response was YES. [2021-06-10 14:57:19,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33647 conditions, 3941 events. 17/3941 cut-off events. For 222652/223491 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 63027 event pairs, 17 based on Foata normal form. 21/3871 useless extension candidates. Maximal degree in co-relation 33463. Up to 593 conditions per place. [2021-06-10 14:57:19,134 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 400 selfloop transitions, 280 changer transitions 2/700 dead transitions. [2021-06-10 14:57:19,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 790 places, 700 transitions, 42102 flow [2021-06-10 14:57:19,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:19,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:19,135 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:19,135 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:19,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:19,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:19,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:19,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:19,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:19,136 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:19,136 INFO L185 Difference]: Start difference. First operand has 784 places, 681 transitions, 40042 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:19,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 790 places, 700 transitions, 42102 flow [2021-06-10 14:57:21,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 787 places, 700 transitions, 41747 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-06-10 14:57:21,226 INFO L241 Difference]: Finished difference. Result has 789 places, 694 transitions, 40938 flow [2021-06-10 14:57:21,226 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39695, PETRI_DIFFERENCE_MINUEND_PLACES=780, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40938, PETRI_PLACES=789, PETRI_TRANSITIONS=694} [2021-06-10 14:57:21,226 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 745 predicate places. [2021-06-10 14:57:21,226 INFO L480 AbstractCegarLoop]: Abstraction has has 789 places, 694 transitions, 40938 flow [2021-06-10 14:57:21,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:21,227 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:21,227 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:21,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-06-10 14:57:21,227 INFO L428 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:21,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:21,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1875960703, now seen corresponding path program 211 times [2021-06-10 14:57:21,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:21,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916071424] [2021-06-10 14:57:21,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:21,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:21,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:21,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:21,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:21,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:21,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:21,244 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:21,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:21,255 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:57:21,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:57:21,269 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:21,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:21,287 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:21,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:21,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916071424] [2021-06-10 14:57:21,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:21,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:21,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477920659] [2021-06-10 14:57:21,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:21,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:21,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:21,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:21,305 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:21,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 789 places, 694 transitions, 40938 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:21,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:21,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:21,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:22,956 INFO L129 PetriNetUnfolder]: 17/3932 cut-off events. [2021-06-10 14:57:22,957 INFO L130 PetriNetUnfolder]: For 226340/227180 co-relation queries the response was YES. [2021-06-10 14:57:22,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33862 conditions, 3932 events. 17/3932 cut-off events. For 226340/227180 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 62854 event pairs, 17 based on Foata normal form. 21/3863 useless extension candidates. Maximal degree in co-relation 33677. Up to 593 conditions per place. [2021-06-10 14:57:22,996 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 398 selfloop transitions, 280 changer transitions 2/698 dead transitions. [2021-06-10 14:57:22,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 795 places, 698 transitions, 42314 flow [2021-06-10 14:57:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:22,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:22,997 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:22,997 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:22,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:22,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:22,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:22,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:22,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:22,997 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:22,997 INFO L185 Difference]: Start difference. First operand has 789 places, 694 transitions, 40938 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:22,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 795 places, 698 transitions, 42314 flow [2021-06-10 14:57:24,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 698 transitions, 41931 flow, removed 22 selfloop flow, removed 3 redundant places. [2021-06-10 14:57:24,961 INFO L241 Difference]: Finished difference. Result has 793 places, 692 transitions, 40965 flow [2021-06-10 14:57:24,961 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=40563, PETRI_DIFFERENCE_MINUEND_PLACES=785, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40965, PETRI_PLACES=793, PETRI_TRANSITIONS=692} [2021-06-10 14:57:24,961 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 749 predicate places. [2021-06-10 14:57:24,961 INFO L480 AbstractCegarLoop]: Abstraction has has 793 places, 692 transitions, 40965 flow [2021-06-10 14:57:24,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:24,962 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:24,962 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:24,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-06-10 14:57:24,962 INFO L428 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:24,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:24,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1517216397, now seen corresponding path program 212 times [2021-06-10 14:57:24,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:24,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543930807] [2021-06-10 14:57:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:24,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:24,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:24,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:24,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:24,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:24,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:24,978 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:24,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:24,988 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:57:24,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:57:25,001 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:25,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:25,020 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:25,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:25,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543930807] [2021-06-10 14:57:25,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:25,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:25,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189168348] [2021-06-10 14:57:25,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:25,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:25,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:25,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:25,038 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:25,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 793 places, 692 transitions, 40965 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:25,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:25,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:25,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:26,624 INFO L129 PetriNetUnfolder]: 17/3923 cut-off events. [2021-06-10 14:57:26,624 INFO L130 PetriNetUnfolder]: For 226021/226866 co-relation queries the response was YES. [2021-06-10 14:57:26,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33963 conditions, 3923 events. 17/3923 cut-off events. For 226021/226866 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 62701 event pairs, 17 based on Foata normal form. 21/3854 useless extension candidates. Maximal degree in co-relation 33778. Up to 593 conditions per place. [2021-06-10 14:57:26,669 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 393 selfloop transitions, 284 changer transitions 1/696 dead transitions. [2021-06-10 14:57:26,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 799 places, 696 transitions, 42337 flow [2021-06-10 14:57:26,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:26,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:26,670 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:26,670 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:26,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:26,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:26,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:26,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:26,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:26,671 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:26,671 INFO L185 Difference]: Start difference. First operand has 793 places, 692 transitions, 40965 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:26,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 799 places, 696 transitions, 42337 flow [2021-06-10 14:57:28,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 696 transitions, 41517 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-06-10 14:57:28,687 INFO L241 Difference]: Finished difference. Result has 793 places, 691 transitions, 40621 flow [2021-06-10 14:57:28,688 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=40153, PETRI_DIFFERENCE_MINUEND_PLACES=785, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40621, PETRI_PLACES=793, PETRI_TRANSITIONS=691} [2021-06-10 14:57:28,688 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 749 predicate places. [2021-06-10 14:57:28,688 INFO L480 AbstractCegarLoop]: Abstraction has has 793 places, 691 transitions, 40621 flow [2021-06-10 14:57:28,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:28,688 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:28,688 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:28,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-06-10 14:57:28,688 INFO L428 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:28,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:28,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1046142709, now seen corresponding path program 213 times [2021-06-10 14:57:28,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:28,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237275422] [2021-06-10 14:57:28,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:28,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:28,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:28,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:28,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:28,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:28,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:28,706 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:28,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:28,715 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:57:28,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:57:28,729 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:57:28,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:57:28,747 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:28,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:28,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237275422] [2021-06-10 14:57:28,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:28,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:28,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514431521] [2021-06-10 14:57:28,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:28,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:28,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:28,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:28,766 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:28,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 793 places, 691 transitions, 40621 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:28,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:28,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:28,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:30,397 INFO L129 PetriNetUnfolder]: 17/3917 cut-off events. [2021-06-10 14:57:30,397 INFO L130 PetriNetUnfolder]: For 222562/223397 co-relation queries the response was YES. [2021-06-10 14:57:30,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33734 conditions, 3917 events. 17/3917 cut-off events. For 222562/223397 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 62513 event pairs, 17 based on Foata normal form. 19/3847 useless extension candidates. Maximal degree in co-relation 33549. Up to 593 conditions per place. [2021-06-10 14:57:30,431 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 391 selfloop transitions, 283 changer transitions 3/695 dead transitions. [2021-06-10 14:57:30,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 799 places, 695 transitions, 41991 flow [2021-06-10 14:57:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:30,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:30,432 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:30,432 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:30,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:30,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:30,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:30,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:30,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:30,433 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:30,433 INFO L185 Difference]: Start difference. First operand has 793 places, 691 transitions, 40621 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:30,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 799 places, 695 transitions, 41991 flow [2021-06-10 14:57:32,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 795 places, 695 transitions, 41485 flow, removed 18 selfloop flow, removed 4 redundant places. [2021-06-10 14:57:32,346 INFO L241 Difference]: Finished difference. Result has 796 places, 688 transitions, 40458 flow [2021-06-10 14:57:32,346 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=40123, PETRI_DIFFERENCE_MINUEND_PLACES=788, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40458, PETRI_PLACES=796, PETRI_TRANSITIONS=688} [2021-06-10 14:57:32,346 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 752 predicate places. [2021-06-10 14:57:32,346 INFO L480 AbstractCegarLoop]: Abstraction has has 796 places, 688 transitions, 40458 flow [2021-06-10 14:57:32,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:32,346 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:32,347 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:32,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-06-10 14:57:32,347 INFO L428 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:32,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:32,347 INFO L82 PathProgramCache]: Analyzing trace with hash 2050396157, now seen corresponding path program 214 times [2021-06-10 14:57:32,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:32,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500324339] [2021-06-10 14:57:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:32,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:32,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:32,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:32,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:32,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:32,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:32,364 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:57:32,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:57:32,381 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:57:32,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:57:32,411 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:32,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:32,429 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:32,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:32,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:32,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500324339] [2021-06-10 14:57:32,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:32,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:32,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907983882] [2021-06-10 14:57:32,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:32,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:32,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:32,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:32,447 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:32,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 688 transitions, 40458 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:32,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:32,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:32,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:34,124 INFO L129 PetriNetUnfolder]: 17/3904 cut-off events. [2021-06-10 14:57:34,124 INFO L130 PetriNetUnfolder]: For 220944/221785 co-relation queries the response was YES. [2021-06-10 14:57:34,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33629 conditions, 3904 events. 17/3904 cut-off events. For 220944/221785 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 62223 event pairs, 17 based on Foata normal form. 21/3837 useless extension candidates. Maximal degree in co-relation 33444. Up to 593 conditions per place. [2021-06-10 14:57:34,163 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 400 selfloop transitions, 272 changer transitions 2/692 dead transitions. [2021-06-10 14:57:34,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 802 places, 692 transitions, 41822 flow [2021-06-10 14:57:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:34,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:34,164 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:34,164 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:34,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:34,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:34,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:34,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:34,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:34,165 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:34,165 INFO L185 Difference]: Start difference. First operand has 796 places, 688 transitions, 40458 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:34,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 802 places, 692 transitions, 41822 flow [2021-06-10 14:57:36,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 797 places, 692 transitions, 41265 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 14:57:36,233 INFO L241 Difference]: Finished difference. Result has 798 places, 686 transitions, 40320 flow [2021-06-10 14:57:36,233 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39909, PETRI_DIFFERENCE_MINUEND_PLACES=790, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40320, PETRI_PLACES=798, PETRI_TRANSITIONS=686} [2021-06-10 14:57:36,233 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 754 predicate places. [2021-06-10 14:57:36,233 INFO L480 AbstractCegarLoop]: Abstraction has has 798 places, 686 transitions, 40320 flow [2021-06-10 14:57:36,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:36,233 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:36,233 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:36,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-06-10 14:57:36,233 INFO L428 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:36,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:36,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1513019053, now seen corresponding path program 215 times [2021-06-10 14:57:36,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:36,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436444373] [2021-06-10 14:57:36,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:36,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:36,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:36,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:36,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:36,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:36,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:36,251 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:36,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:36,261 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:57:36,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:57:36,285 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:36,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:36,303 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:36,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:36,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436444373] [2021-06-10 14:57:36,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:36,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:36,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22732106] [2021-06-10 14:57:36,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:36,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:36,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:36,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:36,322 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:36,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 798 places, 686 transitions, 40320 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:36,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:36,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:36,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:37,978 INFO L129 PetriNetUnfolder]: 17/3893 cut-off events. [2021-06-10 14:57:37,978 INFO L130 PetriNetUnfolder]: For 219960/220803 co-relation queries the response was YES. [2021-06-10 14:57:38,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33545 conditions, 3893 events. 17/3893 cut-off events. For 219960/220803 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 62127 event pairs, 17 based on Foata normal form. 21/3826 useless extension candidates. Maximal degree in co-relation 33360. Up to 593 conditions per place. [2021-06-10 14:57:38,018 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 389 selfloop transitions, 281 changer transitions 2/690 dead transitions. [2021-06-10 14:57:38,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 804 places, 690 transitions, 41680 flow [2021-06-10 14:57:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:38,019 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:38,019 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:38,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:38,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:38,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:38,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:38,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:38,020 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:38,020 INFO L185 Difference]: Start difference. First operand has 798 places, 686 transitions, 40320 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:38,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 804 places, 690 transitions, 41680 flow [2021-06-10 14:57:40,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 800 places, 690 transitions, 41345 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-06-10 14:57:40,128 INFO L241 Difference]: Finished difference. Result has 801 places, 684 transitions, 40400 flow [2021-06-10 14:57:40,128 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39993, PETRI_DIFFERENCE_MINUEND_PLACES=793, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40400, PETRI_PLACES=801, PETRI_TRANSITIONS=684} [2021-06-10 14:57:40,129 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 757 predicate places. [2021-06-10 14:57:40,129 INFO L480 AbstractCegarLoop]: Abstraction has has 801 places, 684 transitions, 40400 flow [2021-06-10 14:57:40,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:40,129 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:40,129 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:40,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-06-10 14:57:40,129 INFO L428 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:40,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:40,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2070393091, now seen corresponding path program 216 times [2021-06-10 14:57:40,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:40,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240155480] [2021-06-10 14:57:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:40,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:40,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:40,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:40,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:40,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:40,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:40,146 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:57:40,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:57:40,156 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:57:40,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:57:40,180 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:57:40,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:57:40,198 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:40,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:40,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240155480] [2021-06-10 14:57:40,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:40,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:40,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914024027] [2021-06-10 14:57:40,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:40,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:40,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:40,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:40,217 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:40,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 684 transitions, 40400 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:40,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:40,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:40,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:41,808 INFO L129 PetriNetUnfolder]: 17/3884 cut-off events. [2021-06-10 14:57:41,808 INFO L130 PetriNetUnfolder]: For 221949/222795 co-relation queries the response was YES. [2021-06-10 14:57:41,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33605 conditions, 3884 events. 17/3884 cut-off events. For 221949/222795 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 61909 event pairs, 17 based on Foata normal form. 21/3817 useless extension candidates. Maximal degree in co-relation 33420. Up to 593 conditions per place. [2021-06-10 14:57:41,853 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 388 selfloop transitions, 278 changer transitions 4/688 dead transitions. [2021-06-10 14:57:41,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 688 transitions, 41756 flow [2021-06-10 14:57:41,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:41,854 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:41,854 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:41,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:41,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:41,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:41,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:41,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:41,855 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:41,855 INFO L185 Difference]: Start difference. First operand has 801 places, 684 transitions, 40400 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:41,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 807 places, 688 transitions, 41756 flow [2021-06-10 14:57:43,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 803 places, 688 transitions, 41259 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-06-10 14:57:43,810 INFO L241 Difference]: Finished difference. Result has 804 places, 680 transitions, 40202 flow [2021-06-10 14:57:43,811 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39911, PETRI_DIFFERENCE_MINUEND_PLACES=796, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40202, PETRI_PLACES=804, PETRI_TRANSITIONS=680} [2021-06-10 14:57:43,811 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 760 predicate places. [2021-06-10 14:57:43,811 INFO L480 AbstractCegarLoop]: Abstraction has has 804 places, 680 transitions, 40202 flow [2021-06-10 14:57:43,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:43,811 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:43,811 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:43,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-06-10 14:57:43,811 INFO L428 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:43,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:43,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1720362245, now seen corresponding path program 217 times [2021-06-10 14:57:43,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:43,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062518272] [2021-06-10 14:57:43,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:43,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:43,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:43,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:43,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:43,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:43,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:43,829 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:57:43,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:57:43,847 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:57:43,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:57:43,860 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:57:43,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:57:43,879 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:43,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:43,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062518272] [2021-06-10 14:57:43,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:43,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:43,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482274314] [2021-06-10 14:57:43,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:43,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:43,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:43,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:43,897 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:43,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 804 places, 680 transitions, 40202 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:43,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:43,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:43,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:45,430 INFO L129 PetriNetUnfolder]: 17/3867 cut-off events. [2021-06-10 14:57:45,430 INFO L130 PetriNetUnfolder]: For 220482/221324 co-relation queries the response was YES. [2021-06-10 14:57:45,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33485 conditions, 3867 events. 17/3867 cut-off events. For 220482/221324 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 61486 event pairs, 17 based on Foata normal form. 19/3798 useless extension candidates. Maximal degree in co-relation 33300. Up to 593 conditions per place. [2021-06-10 14:57:45,467 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 385 selfloop transitions, 279 changer transitions 2/684 dead transitions. [2021-06-10 14:57:45,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 684 transitions, 41550 flow [2021-06-10 14:57:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:45,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:45,468 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:45,468 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:45,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:45,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:45,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:45,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:45,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:45,468 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:45,468 INFO L185 Difference]: Start difference. First operand has 804 places, 680 transitions, 40202 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:45,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 810 places, 684 transitions, 41550 flow [2021-06-10 14:57:47,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 805 places, 684 transitions, 41003 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:57:47,343 INFO L241 Difference]: Finished difference. Result has 806 places, 678 transitions, 40060 flow [2021-06-10 14:57:47,343 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39663, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40060, PETRI_PLACES=806, PETRI_TRANSITIONS=678} [2021-06-10 14:57:47,343 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 762 predicate places. [2021-06-10 14:57:47,343 INFO L480 AbstractCegarLoop]: Abstraction has has 806 places, 678 transitions, 40060 flow [2021-06-10 14:57:47,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:47,343 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:47,343 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:47,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-06-10 14:57:47,343 INFO L428 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:47,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:47,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1732429607, now seen corresponding path program 218 times [2021-06-10 14:57:47,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:47,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526676695] [2021-06-10 14:57:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:47,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:47,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:47,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:47,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:47,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:47,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:47,372 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:57:47,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:57:47,390 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:47,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:47,410 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:57:47,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:57:47,428 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:47,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:47,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526676695] [2021-06-10 14:57:47,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:47,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:47,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219592864] [2021-06-10 14:57:47,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:47,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:47,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:47,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:47,447 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:47,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 806 places, 678 transitions, 40060 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:47,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:47,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:47,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:49,054 INFO L129 PetriNetUnfolder]: 17/3859 cut-off events. [2021-06-10 14:57:49,055 INFO L130 PetriNetUnfolder]: For 219566/220412 co-relation queries the response was YES. [2021-06-10 14:57:49,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33398 conditions, 3859 events. 17/3859 cut-off events. For 219566/220412 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 61426 event pairs, 17 based on Foata normal form. 21/3793 useless extension candidates. Maximal degree in co-relation 33213. Up to 593 conditions per place. [2021-06-10 14:57:49,087 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 390 selfloop transitions, 271 changer transitions 3/682 dead transitions. [2021-06-10 14:57:49,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 812 places, 682 transitions, 41404 flow [2021-06-10 14:57:49,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:49,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:49,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 14:57:49,088 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 14:57:49,089 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 14:57:49,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 14:57:49,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:49,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 14:57:49,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:49,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:49,089 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:49,089 INFO L185 Difference]: Start difference. First operand has 806 places, 678 transitions, 40060 flow. Second operand 8 states and 466 transitions. [2021-06-10 14:57:49,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 812 places, 682 transitions, 41404 flow [2021-06-10 14:57:50,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 808 places, 682 transitions, 40903 flow, removed 18 selfloop flow, removed 4 redundant places. [2021-06-10 14:57:50,943 INFO L241 Difference]: Finished difference. Result has 809 places, 675 transitions, 39912 flow [2021-06-10 14:57:50,944 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39567, PETRI_DIFFERENCE_MINUEND_PLACES=801, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39912, PETRI_PLACES=809, PETRI_TRANSITIONS=675} [2021-06-10 14:57:50,944 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 765 predicate places. [2021-06-10 14:57:50,944 INFO L480 AbstractCegarLoop]: Abstraction has has 809 places, 675 transitions, 39912 flow [2021-06-10 14:57:50,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:50,944 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:50,944 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:50,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-06-10 14:57:50,944 INFO L428 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:50,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:50,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1971975593, now seen corresponding path program 219 times [2021-06-10 14:57:50,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:50,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149097485] [2021-06-10 14:57:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:50,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:50,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:50,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:50,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:50,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:50,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:50,962 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:57:50,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:57:50,979 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:57:50,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:57:50,992 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:50,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:51,010 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:51,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:51,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149097485] [2021-06-10 14:57:51,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:51,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:51,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868823538] [2021-06-10 14:57:51,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:51,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:51,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:51,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:51,028 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:51,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 675 transitions, 39912 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:51,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:51,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:51,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:52,624 INFO L129 PetriNetUnfolder]: 17/3846 cut-off events. [2021-06-10 14:57:52,625 INFO L130 PetriNetUnfolder]: For 218533/219380 co-relation queries the response was YES. [2021-06-10 14:57:52,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33329 conditions, 3846 events. 17/3846 cut-off events. For 218533/219380 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 61200 event pairs, 17 based on Foata normal form. 21/3780 useless extension candidates. Maximal degree in co-relation 33144. Up to 593 conditions per place. [2021-06-10 14:57:52,673 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 408 selfloop transitions, 251 changer transitions 2/679 dead transitions. [2021-06-10 14:57:52,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 814 places, 679 transitions, 41250 flow [2021-06-10 14:57:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:52,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 14:57:52,674 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 14:57:52,674 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 14:57:52,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 14:57:52,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:52,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 14:57:52,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:52,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:52,674 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:52,674 INFO L185 Difference]: Start difference. First operand has 809 places, 675 transitions, 39912 flow. Second operand 8 states and 466 transitions. [2021-06-10 14:57:52,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 814 places, 679 transitions, 41250 flow [2021-06-10 14:57:54,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 809 places, 679 transitions, 40808 flow, removed 15 selfloop flow, removed 5 redundant places. [2021-06-10 14:57:54,668 INFO L241 Difference]: Finished difference. Result has 810 places, 673 transitions, 39849 flow [2021-06-10 14:57:54,669 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39478, PETRI_DIFFERENCE_MINUEND_PLACES=802, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39849, PETRI_PLACES=810, PETRI_TRANSITIONS=673} [2021-06-10 14:57:54,669 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 766 predicate places. [2021-06-10 14:57:54,669 INFO L480 AbstractCegarLoop]: Abstraction has has 810 places, 673 transitions, 39849 flow [2021-06-10 14:57:54,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:54,669 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:54,669 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:54,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-06-10 14:57:54,669 INFO L428 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:54,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:54,669 INFO L82 PathProgramCache]: Analyzing trace with hash -227569961, now seen corresponding path program 220 times [2021-06-10 14:57:54,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:54,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869684916] [2021-06-10 14:57:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:54,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:54,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:54,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:54,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:54,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:54,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:54,687 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:57:54,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:57:54,706 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:57:54,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:57:54,720 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:54,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:54,739 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:54,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:54,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869684916] [2021-06-10 14:57:54,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:54,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:54,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474343876] [2021-06-10 14:57:54,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:54,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:54,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:54,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:54,757 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:54,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 673 transitions, 39849 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:54,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:54,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:54,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:57:56,362 INFO L129 PetriNetUnfolder]: 17/3835 cut-off events. [2021-06-10 14:57:56,363 INFO L130 PetriNetUnfolder]: For 217895/218744 co-relation queries the response was YES. [2021-06-10 14:57:56,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33364 conditions, 3835 events. 17/3835 cut-off events. For 217895/218744 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 60955 event pairs, 17 based on Foata normal form. 21/3769 useless extension candidates. Maximal degree in co-relation 33180. Up to 593 conditions per place. [2021-06-10 14:57:56,401 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 383 selfloop transitions, 273 changer transitions 3/677 dead transitions. [2021-06-10 14:57:56,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 815 places, 677 transitions, 41183 flow [2021-06-10 14:57:56,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:57:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:57:56,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:57:56,402 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:57:56,402 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:57:56,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:57:56,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:57:56,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:57:56,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:56,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:56,403 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:56,403 INFO L185 Difference]: Start difference. First operand has 810 places, 673 transitions, 39849 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:57:56,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 815 places, 677 transitions, 41183 flow [2021-06-10 14:57:58,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 810 places, 677 transitions, 40682 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:57:58,462 INFO L241 Difference]: Finished difference. Result has 811 places, 670 transitions, 39718 flow [2021-06-10 14:57:58,462 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39356, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39718, PETRI_PLACES=811, PETRI_TRANSITIONS=670} [2021-06-10 14:57:58,462 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 767 predicate places. [2021-06-10 14:57:58,463 INFO L480 AbstractCegarLoop]: Abstraction has has 811 places, 670 transitions, 39718 flow [2021-06-10 14:57:58,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:58,463 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:57:58,463 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:57:58,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-06-10 14:57:58,463 INFO L428 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:57:58,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:57:58,463 INFO L82 PathProgramCache]: Analyzing trace with hash -128306121, now seen corresponding path program 221 times [2021-06-10 14:57:58,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:57:58,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509598938] [2021-06-10 14:57:58,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:57:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:57:58,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:58,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:57:58,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:58,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:57:58,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:57:58,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:57:58,481 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:57:58,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:57:58,499 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:57:58,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:57:58,519 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:57:58,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:57:58,537 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:57:58,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:57:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:57:58,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509598938] [2021-06-10 14:57:58,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:57:58,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:57:58,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549840923] [2021-06-10 14:57:58,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:57:58,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:57:58,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:57:58,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:57:58,556 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:57:58,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 811 places, 670 transitions, 39718 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:57:58,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:57:58,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:57:58,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:00,051 INFO L129 PetriNetUnfolder]: 17/3818 cut-off events. [2021-06-10 14:58:00,051 INFO L130 PetriNetUnfolder]: For 216671/217512 co-relation queries the response was YES. [2021-06-10 14:58:00,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33215 conditions, 3818 events. 17/3818 cut-off events. For 216671/217512 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 60614 event pairs, 17 based on Foata normal form. 19/3750 useless extension candidates. Maximal degree in co-relation 33031. Up to 593 conditions per place. [2021-06-10 14:58:00,089 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 399 selfloop transitions, 255 changer transitions 2/674 dead transitions. [2021-06-10 14:58:00,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 816 places, 674 transitions, 41046 flow [2021-06-10 14:58:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:00,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:00,090 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:00,090 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:00,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:00,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:00,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:00,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:00,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:00,090 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:00,090 INFO L185 Difference]: Start difference. First operand has 811 places, 670 transitions, 39718 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:00,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 816 places, 674 transitions, 41046 flow [2021-06-10 14:58:02,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 811 places, 674 transitions, 40509 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:58:02,091 INFO L241 Difference]: Finished difference. Result has 812 places, 668 transitions, 39550 flow [2021-06-10 14:58:02,092 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39189, PETRI_DIFFERENCE_MINUEND_PLACES=804, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39550, PETRI_PLACES=812, PETRI_TRANSITIONS=668} [2021-06-10 14:58:02,092 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 768 predicate places. [2021-06-10 14:58:02,092 INFO L480 AbstractCegarLoop]: Abstraction has has 812 places, 668 transitions, 39550 flow [2021-06-10 14:58:02,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:02,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:02,092 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:02,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-06-10 14:58:02,092 INFO L428 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:02,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:02,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1892935539, now seen corresponding path program 222 times [2021-06-10 14:58:02,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:02,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679017278] [2021-06-10 14:58:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:02,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:02,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:02,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:02,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:02,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:02,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:02,111 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:58:02,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:58:02,129 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:02,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:02,149 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:58:02,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:58:02,168 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:02,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:02,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679017278] [2021-06-10 14:58:02,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:02,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:02,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307541982] [2021-06-10 14:58:02,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:02,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:02,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:02,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:02,186 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:02,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 812 places, 668 transitions, 39550 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:02,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:02,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:02,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:03,788 INFO L129 PetriNetUnfolder]: 17/3807 cut-off events. [2021-06-10 14:58:03,788 INFO L130 PetriNetUnfolder]: For 216145/216992 co-relation queries the response was YES. [2021-06-10 14:58:03,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33125 conditions, 3807 events. 17/3807 cut-off events. For 216145/216992 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 60389 event pairs, 17 based on Foata normal form. 21/3741 useless extension candidates. Maximal degree in co-relation 32941. Up to 593 conditions per place. [2021-06-10 14:58:03,821 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 399 selfloop transitions, 251 changer transitions 3/671 dead transitions. [2021-06-10 14:58:03,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 817 places, 671 transitions, 40868 flow [2021-06-10 14:58:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:03,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 14:58:03,823 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 14:58:03,823 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 14:58:03,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 14:58:03,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:03,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 14:58:03,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:03,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:03,823 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:03,824 INFO L185 Difference]: Start difference. First operand has 812 places, 668 transitions, 39550 flow. Second operand 8 states and 466 transitions. [2021-06-10 14:58:03,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 817 places, 671 transitions, 40868 flow [2021-06-10 14:58:05,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 671 transitions, 40357 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-06-10 14:58:05,638 INFO L241 Difference]: Finished difference. Result has 813 places, 665 transitions, 39371 flow [2021-06-10 14:58:05,638 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39045, PETRI_DIFFERENCE_MINUEND_PLACES=805, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39371, PETRI_PLACES=813, PETRI_TRANSITIONS=665} [2021-06-10 14:58:05,638 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 769 predicate places. [2021-06-10 14:58:05,638 INFO L480 AbstractCegarLoop]: Abstraction has has 813 places, 665 transitions, 39371 flow [2021-06-10 14:58:05,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:05,638 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:05,639 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:05,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-06-10 14:58:05,639 INFO L428 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:05,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:05,639 INFO L82 PathProgramCache]: Analyzing trace with hash -164340301, now seen corresponding path program 223 times [2021-06-10 14:58:05,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:05,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424744141] [2021-06-10 14:58:05,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:05,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:05,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:05,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:05,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:05,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:05,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:05,657 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:05,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:05,670 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:58:05,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:58:05,697 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:05,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:05,715 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:05,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:05,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424744141] [2021-06-10 14:58:05,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:05,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:05,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253566358] [2021-06-10 14:58:05,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:05,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:05,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:05,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:05,734 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:05,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 813 places, 665 transitions, 39371 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:05,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:05,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:05,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:07,313 INFO L129 PetriNetUnfolder]: 17/3794 cut-off events. [2021-06-10 14:58:07,313 INFO L130 PetriNetUnfolder]: For 214368/215217 co-relation queries the response was YES. [2021-06-10 14:58:07,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33052 conditions, 3794 events. 17/3794 cut-off events. For 214368/215217 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 60207 event pairs, 17 based on Foata normal form. 21/3728 useless extension candidates. Maximal degree in co-relation 32869. Up to 593 conditions per place. [2021-06-10 14:58:07,352 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 417 selfloop transitions, 245 changer transitions 2/682 dead transitions. [2021-06-10 14:58:07,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 818 places, 682 transitions, 41417 flow [2021-06-10 14:58:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:07,353 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:07,353 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:07,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:07,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:07,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:07,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:07,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:07,353 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:07,353 INFO L185 Difference]: Start difference. First operand has 813 places, 665 transitions, 39371 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:07,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 818 places, 682 transitions, 41417 flow [2021-06-10 14:58:09,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 682 transitions, 40861 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-10 14:58:09,227 INFO L241 Difference]: Finished difference. Result has 815 places, 670 transitions, 39631 flow [2021-06-10 14:58:09,228 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=38823, PETRI_DIFFERENCE_MINUEND_PLACES=805, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39631, PETRI_PLACES=815, PETRI_TRANSITIONS=670} [2021-06-10 14:58:09,228 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 771 predicate places. [2021-06-10 14:58:09,228 INFO L480 AbstractCegarLoop]: Abstraction has has 815 places, 670 transitions, 39631 flow [2021-06-10 14:58:09,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:09,228 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:09,228 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:09,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-06-10 14:58:09,228 INFO L428 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:09,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:09,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1355249565, now seen corresponding path program 224 times [2021-06-10 14:58:09,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:09,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140634663] [2021-06-10 14:58:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:09,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:09,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:09,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:09,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:09,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:09,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:09,245 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:09,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:09,255 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:58:09,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:58:09,268 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:09,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:09,286 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:09,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:09,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140634663] [2021-06-10 14:58:09,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:09,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:09,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221253493] [2021-06-10 14:58:09,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:09,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:09,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:09,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:09,304 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:09,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 815 places, 670 transitions, 39631 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:09,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:09,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:09,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:10,875 INFO L129 PetriNetUnfolder]: 17/3783 cut-off events. [2021-06-10 14:58:10,875 INFO L130 PetriNetUnfolder]: For 214536/215382 co-relation queries the response was YES. [2021-06-10 14:58:10,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32936 conditions, 3783 events. 17/3783 cut-off events. For 214536/215382 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 59940 event pairs, 17 based on Foata normal form. 21/3717 useless extension candidates. Maximal degree in co-relation 32751. Up to 593 conditions per place. [2021-06-10 14:58:10,922 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 416 selfloop transitions, 244 changer transitions 2/680 dead transitions. [2021-06-10 14:58:10,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 821 places, 680 transitions, 41282 flow [2021-06-10 14:58:10,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:10,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:10,923 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:10,923 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:10,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:10,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:10,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:10,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:10,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:10,923 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:10,923 INFO L185 Difference]: Start difference. First operand has 815 places, 670 transitions, 39631 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:10,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 821 places, 680 transitions, 41282 flow [2021-06-10 14:58:12,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 817 places, 680 transitions, 40823 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-06-10 14:58:12,920 INFO L241 Difference]: Finished difference. Result has 819 places, 670 transitions, 39669 flow [2021-06-10 14:58:12,921 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39180, PETRI_DIFFERENCE_MINUEND_PLACES=810, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39669, PETRI_PLACES=819, PETRI_TRANSITIONS=670} [2021-06-10 14:58:12,921 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 775 predicate places. [2021-06-10 14:58:12,921 INFO L480 AbstractCegarLoop]: Abstraction has has 819 places, 670 transitions, 39669 flow [2021-06-10 14:58:12,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:12,921 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:12,921 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:12,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-06-10 14:58:12,921 INFO L428 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:12,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:12,921 INFO L82 PathProgramCache]: Analyzing trace with hash -300095855, now seen corresponding path program 225 times [2021-06-10 14:58:12,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:12,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189026792] [2021-06-10 14:58:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:12,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:12,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:12,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:12,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:12,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:12,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:12,939 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:12,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:12,948 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:58:12,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:58:12,962 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:12,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:12,980 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:12,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:12,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189026792] [2021-06-10 14:58:12,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:12,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:12,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638916244] [2021-06-10 14:58:12,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:12,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:12,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:12,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:12,998 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:12,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 819 places, 670 transitions, 39669 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:12,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:12,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:12,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:14,528 INFO L129 PetriNetUnfolder]: 17/3772 cut-off events. [2021-06-10 14:58:14,529 INFO L130 PetriNetUnfolder]: For 214229/215071 co-relation queries the response was YES. [2021-06-10 14:58:14,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32897 conditions, 3772 events. 17/3772 cut-off events. For 214229/215071 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 59710 event pairs, 17 based on Foata normal form. 19/3704 useless extension candidates. Maximal degree in co-relation 32711. Up to 593 conditions per place. [2021-06-10 14:58:14,567 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 411 selfloop transitions, 247 changer transitions 2/678 dead transitions. [2021-06-10 14:58:14,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 825 places, 678 transitions, 41199 flow [2021-06-10 14:58:14,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:14,568 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:14,568 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:14,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:14,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:14,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:14,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:14,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:14,569 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:14,569 INFO L185 Difference]: Start difference. First operand has 819 places, 670 transitions, 39669 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:14,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 825 places, 678 transitions, 41199 flow [2021-06-10 14:58:16,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 820 places, 678 transitions, 40709 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 14:58:16,529 INFO L241 Difference]: Finished difference. Result has 822 places, 672 transitions, 39766 flow [2021-06-10 14:58:16,530 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39187, PETRI_DIFFERENCE_MINUEND_PLACES=813, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39766, PETRI_PLACES=822, PETRI_TRANSITIONS=672} [2021-06-10 14:58:16,530 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 778 predicate places. [2021-06-10 14:58:16,530 INFO L480 AbstractCegarLoop]: Abstraction has has 822 places, 672 transitions, 39766 flow [2021-06-10 14:58:16,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:16,530 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:16,530 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:16,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-06-10 14:58:16,530 INFO L428 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:16,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:16,530 INFO L82 PathProgramCache]: Analyzing trace with hash -781242047, now seen corresponding path program 226 times [2021-06-10 14:58:16,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:16,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178017272] [2021-06-10 14:58:16,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:16,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:16,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:16,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:16,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:16,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:16,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:16,547 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:16,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:16,557 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:58:16,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:58:16,570 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:16,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:16,603 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:16,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:16,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178017272] [2021-06-10 14:58:16,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:16,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:16,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857676203] [2021-06-10 14:58:16,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:16,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:16,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:16,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:16,623 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:16,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 822 places, 672 transitions, 39766 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:16,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:16,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:16,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:18,232 INFO L129 PetriNetUnfolder]: 17/3763 cut-off events. [2021-06-10 14:58:18,232 INFO L130 PetriNetUnfolder]: For 214219/215060 co-relation queries the response was YES. [2021-06-10 14:58:18,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32831 conditions, 3763 events. 17/3763 cut-off events. For 214219/215060 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 59489 event pairs, 17 based on Foata normal form. 19/3696 useless extension candidates. Maximal degree in co-relation 32644. Up to 593 conditions per place. [2021-06-10 14:58:18,267 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 410 selfloop transitions, 245 changer transitions 3/676 dead transitions. [2021-06-10 14:58:18,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 828 places, 676 transitions, 41098 flow [2021-06-10 14:58:18,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:18,268 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:18,268 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:18,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:18,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:18,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:18,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:18,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:18,269 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:18,269 INFO L185 Difference]: Start difference. First operand has 822 places, 672 transitions, 39766 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:18,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 828 places, 676 transitions, 41098 flow [2021-06-10 14:58:20,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 825 places, 676 transitions, 40741 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-06-10 14:58:20,182 INFO L241 Difference]: Finished difference. Result has 826 places, 669 transitions, 39706 flow [2021-06-10 14:58:20,183 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39417, PETRI_DIFFERENCE_MINUEND_PLACES=818, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39706, PETRI_PLACES=826, PETRI_TRANSITIONS=669} [2021-06-10 14:58:20,183 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 782 predicate places. [2021-06-10 14:58:20,183 INFO L480 AbstractCegarLoop]: Abstraction has has 826 places, 669 transitions, 39706 flow [2021-06-10 14:58:20,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:20,183 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:20,183 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:20,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-06-10 14:58:20,183 INFO L428 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:20,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:20,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1944912177, now seen corresponding path program 227 times [2021-06-10 14:58:20,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:20,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116373040] [2021-06-10 14:58:20,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:20,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:20,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:20,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:20,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:20,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:20,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:20,200 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:20,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:20,210 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:58:20,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:58:20,234 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:58:20,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:58:20,253 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:20,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:20,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116373040] [2021-06-10 14:58:20,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:20,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:20,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90369517] [2021-06-10 14:58:20,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:20,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:20,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:20,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:20,271 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:20,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 826 places, 669 transitions, 39706 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:20,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:20,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:20,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:21,810 INFO L129 PetriNetUnfolder]: 17/3750 cut-off events. [2021-06-10 14:58:21,810 INFO L130 PetriNetUnfolder]: For 213670/214512 co-relation queries the response was YES. [2021-06-10 14:58:21,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32884 conditions, 3750 events. 17/3750 cut-off events. For 213670/214512 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 59232 event pairs, 17 based on Foata normal form. 19/3683 useless extension candidates. Maximal degree in co-relation 32697. Up to 593 conditions per place. [2021-06-10 14:58:21,849 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 412 selfloop transitions, 239 changer transitions 3/672 dead transitions. [2021-06-10 14:58:21,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 831 places, 672 transitions, 41026 flow [2021-06-10 14:58:21,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:21,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 14:58:21,850 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 14:58:21,850 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 14:58:21,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 14:58:21,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:21,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 14:58:21,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:21,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:21,850 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:21,850 INFO L185 Difference]: Start difference. First operand has 826 places, 669 transitions, 39706 flow. Second operand 8 states and 466 transitions. [2021-06-10 14:58:21,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 831 places, 672 transitions, 41026 flow [2021-06-10 14:58:23,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 824 places, 672 transitions, 40456 flow, removed 5 selfloop flow, removed 7 redundant places. [2021-06-10 14:58:23,744 INFO L241 Difference]: Finished difference. Result has 825 places, 666 transitions, 39440 flow [2021-06-10 14:58:23,745 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39142, PETRI_DIFFERENCE_MINUEND_PLACES=817, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39440, PETRI_PLACES=825, PETRI_TRANSITIONS=666} [2021-06-10 14:58:23,745 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 781 predicate places. [2021-06-10 14:58:23,745 INFO L480 AbstractCegarLoop]: Abstraction has has 825 places, 666 transitions, 39440 flow [2021-06-10 14:58:23,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:23,745 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:23,745 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:23,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-06-10 14:58:23,745 INFO L428 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:23,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:23,745 INFO L82 PathProgramCache]: Analyzing trace with hash 102005653, now seen corresponding path program 228 times [2021-06-10 14:58:23,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:23,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215872046] [2021-06-10 14:58:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:23,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:23,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:23,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:23,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:23,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:23,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:23,762 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:23,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:23,772 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:58:23,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:58:23,796 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:58:23,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:58:23,814 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:23,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:23,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215872046] [2021-06-10 14:58:23,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:23,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:23,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673024646] [2021-06-10 14:58:23,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:23,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:23,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:23,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:23,832 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:23,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 825 places, 666 transitions, 39440 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:23,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:23,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:23,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:25,355 INFO L129 PetriNetUnfolder]: 17/3737 cut-off events. [2021-06-10 14:58:25,355 INFO L130 PetriNetUnfolder]: For 212956/213805 co-relation queries the response was YES. [2021-06-10 14:58:25,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32677 conditions, 3737 events. 17/3737 cut-off events. For 212956/213805 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 59052 event pairs, 17 based on Foata normal form. 21/3672 useless extension candidates. Maximal degree in co-relation 32490. Up to 606 conditions per place. [2021-06-10 14:58:25,393 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 438 selfloop transitions, 252 changer transitions 2/710 dead transitions. [2021-06-10 14:58:25,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 830 places, 710 transitions, 43094 flow [2021-06-10 14:58:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:25,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:25,394 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:25,394 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:25,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:25,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:25,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:25,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:25,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:25,395 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:25,395 INFO L185 Difference]: Start difference. First operand has 825 places, 666 transitions, 39440 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:25,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 830 places, 710 transitions, 43094 flow [2021-06-10 14:58:27,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 825 places, 710 transitions, 42609 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 14:58:27,316 INFO L241 Difference]: Finished difference. Result has 827 places, 666 transitions, 39513 flow [2021-06-10 14:58:27,316 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=38963, PETRI_DIFFERENCE_MINUEND_PLACES=818, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39513, PETRI_PLACES=827, PETRI_TRANSITIONS=666} [2021-06-10 14:58:27,316 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 783 predicate places. [2021-06-10 14:58:27,316 INFO L480 AbstractCegarLoop]: Abstraction has has 827 places, 666 transitions, 39513 flow [2021-06-10 14:58:27,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:27,317 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:27,317 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:27,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-06-10 14:58:27,317 INFO L428 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:27,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:27,317 INFO L82 PathProgramCache]: Analyzing trace with hash -947153987, now seen corresponding path program 229 times [2021-06-10 14:58:27,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:27,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62475296] [2021-06-10 14:58:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:27,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:27,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:27,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:27,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:27,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:27,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:27,342 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:58:27,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:58:27,360 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:58:27,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:58:27,375 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:27,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:27,393 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:27,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:27,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62475296] [2021-06-10 14:58:27,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:27,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:27,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912573762] [2021-06-10 14:58:27,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:27,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:27,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:27,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:27,412 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:27,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 827 places, 666 transitions, 39513 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:27,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:27,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:27,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:28,944 INFO L129 PetriNetUnfolder]: 17/3726 cut-off events. [2021-06-10 14:58:28,944 INFO L130 PetriNetUnfolder]: For 212778/213642 co-relation queries the response was YES. [2021-06-10 14:58:28,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32605 conditions, 3726 events. 17/3726 cut-off events. For 212778/213642 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 58870 event pairs, 17 based on Foata normal form. 21/3661 useless extension candidates. Maximal degree in co-relation 32417. Up to 606 conditions per place. [2021-06-10 14:58:28,982 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 423 selfloop transitions, 265 changer transitions 2/708 dead transitions. [2021-06-10 14:58:28,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 833 places, 708 transitions, 43013 flow [2021-06-10 14:58:28,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:28,983 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:28,983 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:28,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:28,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:28,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:28,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:28,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:28,984 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:28,984 INFO L185 Difference]: Start difference. First operand has 827 places, 666 transitions, 39513 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:28,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 833 places, 708 transitions, 43013 flow [2021-06-10 14:58:30,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 827 places, 708 transitions, 42519 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-06-10 14:58:30,917 INFO L241 Difference]: Finished difference. Result has 830 places, 673 transitions, 40015 flow [2021-06-10 14:58:30,917 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39027, PETRI_DIFFERENCE_MINUEND_PLACES=820, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40015, PETRI_PLACES=830, PETRI_TRANSITIONS=673} [2021-06-10 14:58:30,917 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 786 predicate places. [2021-06-10 14:58:30,917 INFO L480 AbstractCegarLoop]: Abstraction has has 830 places, 673 transitions, 40015 flow [2021-06-10 14:58:30,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:30,917 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:30,917 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:30,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-06-10 14:58:30,917 INFO L428 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:30,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:30,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1558228979, now seen corresponding path program 230 times [2021-06-10 14:58:30,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:30,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056244093] [2021-06-10 14:58:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:30,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:30,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:30,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:30,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:30,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:30,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:30,935 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:58:30,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:58:30,953 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:58:30,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:58:30,977 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:58:30,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:58:30,995 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:30,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:31,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056244093] [2021-06-10 14:58:31,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:31,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:31,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833349345] [2021-06-10 14:58:31,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:31,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:31,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:31,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:31,013 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:31,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 830 places, 673 transitions, 40015 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:31,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:31,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:31,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:32,581 INFO L129 PetriNetUnfolder]: 17/3718 cut-off events. [2021-06-10 14:58:32,581 INFO L130 PetriNetUnfolder]: For 212508/213377 co-relation queries the response was YES. [2021-06-10 14:58:32,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32597 conditions, 3718 events. 17/3718 cut-off events. For 212508/213377 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 58655 event pairs, 17 based on Foata normal form. 19/3652 useless extension candidates. Maximal degree in co-relation 32409. Up to 606 conditions per place. [2021-06-10 14:58:32,618 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 429 selfloop transitions, 257 changer transitions 2/706 dead transitions. [2021-06-10 14:58:32,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 836 places, 706 transitions, 42989 flow [2021-06-10 14:58:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:32,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:32,619 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:32,619 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:32,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:32,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:32,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:32,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:32,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:32,619 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:32,619 INFO L185 Difference]: Start difference. First operand has 830 places, 673 transitions, 40015 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:32,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 836 places, 706 transitions, 42989 flow [2021-06-10 14:58:34,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 832 places, 706 transitions, 42602 flow, removed 26 selfloop flow, removed 4 redundant places. [2021-06-10 14:58:34,532 INFO L241 Difference]: Finished difference. Result has 834 places, 673 transitions, 40185 flow [2021-06-10 14:58:34,532 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39636, PETRI_DIFFERENCE_MINUEND_PLACES=825, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40185, PETRI_PLACES=834, PETRI_TRANSITIONS=673} [2021-06-10 14:58:34,532 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 790 predicate places. [2021-06-10 14:58:34,532 INFO L480 AbstractCegarLoop]: Abstraction has has 834 places, 673 transitions, 40185 flow [2021-06-10 14:58:34,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:34,533 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:34,533 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:34,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-06-10 14:58:34,533 INFO L428 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:34,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:34,533 INFO L82 PathProgramCache]: Analyzing trace with hash 817287183, now seen corresponding path program 231 times [2021-06-10 14:58:34,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:34,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705949404] [2021-06-10 14:58:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:34,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:34,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:34,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:34,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:34,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:34,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:34,550 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:34,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:34,559 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:58:34,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:58:34,572 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:34,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:34,590 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:34,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:34,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705949404] [2021-06-10 14:58:34,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:34,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:34,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886831412] [2021-06-10 14:58:34,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:34,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:34,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:34,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:34,610 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:34,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 834 places, 673 transitions, 40185 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:34,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:34,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:34,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:36,203 INFO L129 PetriNetUnfolder]: 17/3707 cut-off events. [2021-06-10 14:58:36,203 INFO L130 PetriNetUnfolder]: For 212702/213571 co-relation queries the response was YES. [2021-06-10 14:58:36,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32667 conditions, 3707 events. 17/3707 cut-off events. For 212702/213571 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 58457 event pairs, 17 based on Foata normal form. 19/3641 useless extension candidates. Maximal degree in co-relation 32479. Up to 606 conditions per place. [2021-06-10 14:58:36,251 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 411 selfloop transitions, 273 changer transitions 2/704 dead transitions. [2021-06-10 14:58:36,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 840 places, 704 transitions, 43005 flow [2021-06-10 14:58:36,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:36,252 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:36,252 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:36,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:36,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:36,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:36,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:36,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:36,253 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:36,253 INFO L185 Difference]: Start difference. First operand has 834 places, 673 transitions, 40185 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:36,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 840 places, 704 transitions, 43005 flow [2021-06-10 14:58:38,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 835 places, 704 transitions, 42496 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:58:38,205 INFO L241 Difference]: Finished difference. Result has 837 places, 683 transitions, 40741 flow [2021-06-10 14:58:38,205 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39684, PETRI_DIFFERENCE_MINUEND_PLACES=828, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40741, PETRI_PLACES=837, PETRI_TRANSITIONS=683} [2021-06-10 14:58:38,205 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 793 predicate places. [2021-06-10 14:58:38,205 INFO L480 AbstractCegarLoop]: Abstraction has has 837 places, 683 transitions, 40741 flow [2021-06-10 14:58:38,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:38,205 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:38,205 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:38,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-06-10 14:58:38,205 INFO L428 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:38,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:38,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1205254341, now seen corresponding path program 232 times [2021-06-10 14:58:38,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:38,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747050537] [2021-06-10 14:58:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:38,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:38,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:38,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:38,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:38,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:38,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:38,223 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:58:38,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:58:38,240 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:58:38,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:58:38,261 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:58:38,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:58:38,281 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:38,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:38,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747050537] [2021-06-10 14:58:38,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:38,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:38,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991065948] [2021-06-10 14:58:38,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:38,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:38,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:38,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:38,299 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:38,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 837 places, 683 transitions, 40741 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:38,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:38,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:38,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:39,848 INFO L129 PetriNetUnfolder]: 17/3698 cut-off events. [2021-06-10 14:58:39,849 INFO L130 PetriNetUnfolder]: For 214856/215757 co-relation queries the response was YES. [2021-06-10 14:58:39,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32666 conditions, 3698 events. 17/3698 cut-off events. For 214856/215757 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 58252 event pairs, 17 based on Foata normal form. 19/3633 useless extension candidates. Maximal degree in co-relation 32477. Up to 606 conditions per place. [2021-06-10 14:58:39,886 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 426 selfloop transitions, 256 changer transitions 2/702 dead transitions. [2021-06-10 14:58:39,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 843 places, 702 transitions, 43023 flow [2021-06-10 14:58:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:39,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:39,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:39,887 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:39,888 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:39,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:39,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:39,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:39,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:39,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:39,888 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:39,888 INFO L185 Difference]: Start difference. First operand has 837 places, 683 transitions, 40741 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:39,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 843 places, 702 transitions, 43023 flow [2021-06-10 14:58:41,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 840 places, 702 transitions, 42654 flow, removed 19 selfloop flow, removed 3 redundant places. [2021-06-10 14:58:41,760 INFO L241 Difference]: Finished difference. Result has 842 places, 687 transitions, 41203 flow [2021-06-10 14:58:41,760 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=40380, PETRI_DIFFERENCE_MINUEND_PLACES=833, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=41203, PETRI_PLACES=842, PETRI_TRANSITIONS=687} [2021-06-10 14:58:41,760 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 798 predicate places. [2021-06-10 14:58:41,760 INFO L480 AbstractCegarLoop]: Abstraction has has 842 places, 687 transitions, 41203 flow [2021-06-10 14:58:41,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:41,760 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:41,760 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:41,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-06-10 14:58:41,760 INFO L428 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:41,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:41,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1011683843, now seen corresponding path program 233 times [2021-06-10 14:58:41,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:41,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768108286] [2021-06-10 14:58:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:41,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:41,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:41,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:41,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:41,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:41,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:41,778 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:58:41,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:58:41,796 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:58:41,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:58:41,816 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:41,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:41,834 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:41,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:41,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768108286] [2021-06-10 14:58:41,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:41,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:41,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192424919] [2021-06-10 14:58:41,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:41,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:41,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:41,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:41,853 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:41,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 842 places, 687 transitions, 41203 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:41,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:41,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:41,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:43,373 INFO L129 PetriNetUnfolder]: 17/3687 cut-off events. [2021-06-10 14:58:43,373 INFO L130 PetriNetUnfolder]: For 215956/216847 co-relation queries the response was YES. [2021-06-10 14:58:43,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32742 conditions, 3687 events. 17/3687 cut-off events. For 215956/216847 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 58093 event pairs, 17 based on Foata normal form. 21/3624 useless extension candidates. Maximal degree in co-relation 32552. Up to 606 conditions per place. [2021-06-10 14:58:43,422 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 426 selfloop transitions, 253 changer transitions 3/700 dead transitions. [2021-06-10 14:58:43,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 848 places, 700 transitions, 43099 flow [2021-06-10 14:58:43,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:43,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:43,423 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:43,423 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:43,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:43,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:43,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:43,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:43,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:43,424 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:43,424 INFO L185 Difference]: Start difference. First operand has 842 places, 687 transitions, 41203 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:43,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 848 places, 700 transitions, 43099 flow [2021-06-10 14:58:45,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 844 places, 700 transitions, 42636 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-06-10 14:58:45,395 INFO L241 Difference]: Finished difference. Result has 845 places, 684 transitions, 41065 flow [2021-06-10 14:58:45,396 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=40748, PETRI_DIFFERENCE_MINUEND_PLACES=837, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=41065, PETRI_PLACES=845, PETRI_TRANSITIONS=684} [2021-06-10 14:58:45,396 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 801 predicate places. [2021-06-10 14:58:45,396 INFO L480 AbstractCegarLoop]: Abstraction has has 845 places, 684 transitions, 41065 flow [2021-06-10 14:58:45,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:45,396 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:45,396 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:45,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-06-10 14:58:45,396 INFO L428 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:45,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:45,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1028196599, now seen corresponding path program 234 times [2021-06-10 14:58:45,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:45,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857322676] [2021-06-10 14:58:45,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:45,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:45,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:45,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:45,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:45,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:45,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:45,413 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:45,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:45,423 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:58:45,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:58:45,437 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:45,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:45,455 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:45,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:45,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:45,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857322676] [2021-06-10 14:58:45,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:45,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:45,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551473398] [2021-06-10 14:58:45,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:45,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:45,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:45,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:45,473 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:45,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 845 places, 684 transitions, 41065 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:45,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:45,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:45,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:47,079 INFO L129 PetriNetUnfolder]: 17/3674 cut-off events. [2021-06-10 14:58:47,079 INFO L130 PetriNetUnfolder]: For 215185/216076 co-relation queries the response was YES. [2021-06-10 14:58:47,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32674 conditions, 3674 events. 17/3674 cut-off events. For 215185/216076 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 57862 event pairs, 17 based on Foata normal form. 21/3611 useless extension candidates. Maximal degree in co-relation 32484. Up to 606 conditions per place. [2021-06-10 14:58:47,113 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 404 selfloop transitions, 273 changer transitions 2/697 dead transitions. [2021-06-10 14:58:47,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 851 places, 697 transitions, 42955 flow [2021-06-10 14:58:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:47,114 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:47,115 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:47,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:47,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:47,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:47,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:47,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:47,115 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:47,115 INFO L185 Difference]: Start difference. First operand has 845 places, 684 transitions, 41065 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:47,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 851 places, 697 transitions, 42955 flow [2021-06-10 14:58:49,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 846 places, 697 transitions, 42451 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:58:49,049 INFO L241 Difference]: Finished difference. Result has 848 places, 688 transitions, 41403 flow [2021-06-10 14:58:49,049 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=40569, PETRI_DIFFERENCE_MINUEND_PLACES=839, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=41403, PETRI_PLACES=848, PETRI_TRANSITIONS=688} [2021-06-10 14:58:49,049 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 804 predicate places. [2021-06-10 14:58:49,049 INFO L480 AbstractCegarLoop]: Abstraction has has 848 places, 688 transitions, 41403 flow [2021-06-10 14:58:49,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:49,049 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:49,049 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:49,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-06-10 14:58:49,049 INFO L428 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:49,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:49,050 INFO L82 PathProgramCache]: Analyzing trace with hash -335083629, now seen corresponding path program 235 times [2021-06-10 14:58:49,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:49,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196293599] [2021-06-10 14:58:49,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:49,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:49,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:49,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:49,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:49,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:49,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:49,066 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:58:49,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:58:49,084 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:58:49,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:58:49,098 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:49,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:49,116 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:49,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:49,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196293599] [2021-06-10 14:58:49,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:49,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:49,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82113156] [2021-06-10 14:58:49,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:49,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:49,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:49,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:49,134 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:49,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 848 places, 688 transitions, 41403 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:49,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:49,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:49,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:50,726 INFO L129 PetriNetUnfolder]: 17/3665 cut-off events. [2021-06-10 14:58:50,727 INFO L130 PetriNetUnfolder]: For 215702/216594 co-relation queries the response was YES. [2021-06-10 14:58:50,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32617 conditions, 3665 events. 17/3665 cut-off events. For 215702/216594 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 57629 event pairs, 17 based on Foata normal form. 19/3600 useless extension candidates. Maximal degree in co-relation 32426. Up to 606 conditions per place. [2021-06-10 14:58:50,765 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 417 selfloop transitions, 257 changer transitions 3/695 dead transitions. [2021-06-10 14:58:50,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 695 transitions, 42913 flow [2021-06-10 14:58:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:50,766 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:50,766 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:50,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:50,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:50,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:50,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:50,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:50,767 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:50,767 INFO L185 Difference]: Start difference. First operand has 848 places, 688 transitions, 41403 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:50,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 854 places, 695 transitions, 42913 flow [2021-06-10 14:58:52,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 851 places, 695 transitions, 42556 flow, removed 13 selfloop flow, removed 3 redundant places. [2021-06-10 14:58:52,759 INFO L241 Difference]: Finished difference. Result has 852 places, 685 transitions, 41356 flow [2021-06-10 14:58:52,759 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=41054, PETRI_DIFFERENCE_MINUEND_PLACES=844, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=41356, PETRI_PLACES=852, PETRI_TRANSITIONS=685} [2021-06-10 14:58:52,760 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 808 predicate places. [2021-06-10 14:58:52,760 INFO L480 AbstractCegarLoop]: Abstraction has has 852 places, 685 transitions, 41356 flow [2021-06-10 14:58:52,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:52,760 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:52,760 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:52,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-06-10 14:58:52,760 INFO L428 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:52,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1635427839, now seen corresponding path program 236 times [2021-06-10 14:58:52,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:52,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690792642] [2021-06-10 14:58:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:52,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:52,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:52,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:52,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:52,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:52,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:52,778 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:52,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:52,787 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:58:52,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:58:52,801 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:52,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:52,819 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:52,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:52,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690792642] [2021-06-10 14:58:52,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:52,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:52,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368120141] [2021-06-10 14:58:52,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:52,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:52,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:52,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:52,838 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:52,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 852 places, 685 transitions, 41356 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:52,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:52,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:52,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:54,475 INFO L129 PetriNetUnfolder]: 17/3652 cut-off events. [2021-06-10 14:58:54,475 INFO L130 PetriNetUnfolder]: For 215408/216303 co-relation queries the response was YES. [2021-06-10 14:58:54,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32649 conditions, 3652 events. 17/3652 cut-off events. For 215408/216303 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 57412 event pairs, 17 based on Foata normal form. 19/3587 useless extension candidates. Maximal degree in co-relation 32458. Up to 606 conditions per place. [2021-06-10 14:58:54,515 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 407 selfloop transitions, 265 changer transitions 2/692 dead transitions. [2021-06-10 14:58:54,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 858 places, 692 transitions, 42860 flow [2021-06-10 14:58:54,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:54,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:54,516 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:54,516 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:54,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:54,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:54,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:54,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:54,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:54,516 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:54,516 INFO L185 Difference]: Start difference. First operand has 852 places, 685 transitions, 41356 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:54,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 858 places, 692 transitions, 42860 flow [2021-06-10 14:58:56,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 853 places, 692 transitions, 42354 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:58:56,544 INFO L241 Difference]: Finished difference. Result has 854 places, 683 transitions, 41221 flow [2021-06-10 14:58:56,544 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=40858, PETRI_DIFFERENCE_MINUEND_PLACES=846, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=41221, PETRI_PLACES=854, PETRI_TRANSITIONS=683} [2021-06-10 14:58:56,544 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 810 predicate places. [2021-06-10 14:58:56,544 INFO L480 AbstractCegarLoop]: Abstraction has has 854 places, 683 transitions, 41221 flow [2021-06-10 14:58:56,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:56,544 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:58:56,545 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:58:56,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-06-10 14:58:56,545 INFO L428 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:58:56,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:58:56,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1865970817, now seen corresponding path program 237 times [2021-06-10 14:58:56,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:58:56,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549851546] [2021-06-10 14:58:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:58:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:58:56,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:56,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:58:56,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:56,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:58:56,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:58:56,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:58:56,562 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:58:56,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:58:56,574 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:58:56,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:58:56,588 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:58:56,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:58:56,606 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:58:56,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:58:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:58:56,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549851546] [2021-06-10 14:58:56,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:58:56,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:58:56,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341689848] [2021-06-10 14:58:56,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:58:56,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:58:56,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:58:56,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:58:56,625 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:58:56,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 854 places, 683 transitions, 41221 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:56,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:58:56,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:58:56,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:58:58,127 INFO L129 PetriNetUnfolder]: 17/3643 cut-off events. [2021-06-10 14:58:58,128 INFO L130 PetriNetUnfolder]: For 214761/215667 co-relation queries the response was YES. [2021-06-10 14:58:58,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32568 conditions, 3643 events. 17/3643 cut-off events. For 214761/215667 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 57241 event pairs, 17 based on Foata normal form. 21/3580 useless extension candidates. Maximal degree in co-relation 32377. Up to 606 conditions per place. [2021-06-10 14:58:58,165 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 401 selfloop transitions, 269 changer transitions 2/690 dead transitions. [2021-06-10 14:58:58,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 690 transitions, 42721 flow [2021-06-10 14:58:58,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:58:58,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:58:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:58:58,166 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:58:58,166 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:58:58,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:58:58,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:58:58,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:58:58,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:58,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:58,167 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:58:58,167 INFO L185 Difference]: Start difference. First operand has 854 places, 683 transitions, 41221 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:58:58,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 690 transitions, 42721 flow [2021-06-10 14:59:00,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 855 places, 690 transitions, 42196 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:59:00,064 INFO L241 Difference]: Finished difference. Result has 856 places, 681 transitions, 41058 flow [2021-06-10 14:59:00,064 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=40704, PETRI_DIFFERENCE_MINUEND_PLACES=848, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=41058, PETRI_PLACES=856, PETRI_TRANSITIONS=681} [2021-06-10 14:59:00,064 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 812 predicate places. [2021-06-10 14:59:00,064 INFO L480 AbstractCegarLoop]: Abstraction has has 856 places, 681 transitions, 41058 flow [2021-06-10 14:59:00,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:00,064 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:00,064 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:00,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-06-10 14:59:00,065 INFO L428 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:00,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:00,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1367076667, now seen corresponding path program 238 times [2021-06-10 14:59:00,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:00,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971300054] [2021-06-10 14:59:00,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:00,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:00,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:00,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:00,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:00,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:00,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:00,083 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:59:00,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:59:00,093 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:59:00,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:59:00,107 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:59:00,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:59:00,125 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:00,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:00,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971300054] [2021-06-10 14:59:00,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:00,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:00,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187906725] [2021-06-10 14:59:00,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:00,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:00,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:00,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:00,143 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:00,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 856 places, 681 transitions, 41058 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:00,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:00,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:00,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:01,677 INFO L129 PetriNetUnfolder]: 17/3635 cut-off events. [2021-06-10 14:59:01,677 INFO L130 PetriNetUnfolder]: For 213873/214828 co-relation queries the response was YES. [2021-06-10 14:59:01,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32470 conditions, 3635 events. 17/3635 cut-off events. For 213873/214828 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 57117 event pairs, 17 based on Foata normal form. 21/3573 useless extension candidates. Maximal degree in co-relation 32279. Up to 606 conditions per place. [2021-06-10 14:59:01,711 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 431 selfloop transitions, 237 changer transitions 2/688 dead transitions. [2021-06-10 14:59:01,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 861 places, 688 transitions, 42554 flow [2021-06-10 14:59:01,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:01,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:01,712 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:01,712 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:01,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:01,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:01,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:01,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:01,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:01,713 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:01,713 INFO L185 Difference]: Start difference. First operand has 856 places, 681 transitions, 41058 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:01,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 861 places, 688 transitions, 42554 flow [2021-06-10 14:59:03,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 856 places, 688 transitions, 41973 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:59:03,501 INFO L241 Difference]: Finished difference. Result has 858 places, 680 transitions, 40917 flow [2021-06-10 14:59:03,501 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=40485, PETRI_DIFFERENCE_MINUEND_PLACES=849, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40917, PETRI_PLACES=858, PETRI_TRANSITIONS=680} [2021-06-10 14:59:03,502 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 814 predicate places. [2021-06-10 14:59:03,502 INFO L480 AbstractCegarLoop]: Abstraction has has 858 places, 680 transitions, 40917 flow [2021-06-10 14:59:03,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:03,502 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:03,502 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:03,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-06-10 14:59:03,502 INFO L428 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:03,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:03,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1282988181, now seen corresponding path program 239 times [2021-06-10 14:59:03,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:03,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614543382] [2021-06-10 14:59:03,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:03,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:03,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:03,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:03,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:03,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:03,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:03,519 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:59:03,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:59:03,529 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:59:03,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:59:03,542 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:59:03,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:59:03,561 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:03,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:03,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614543382] [2021-06-10 14:59:03,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:03,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:03,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924142125] [2021-06-10 14:59:03,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:03,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:03,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:03,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:03,579 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:03,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 680 transitions, 40917 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:03,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:03,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:03,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:05,130 INFO L129 PetriNetUnfolder]: 17/3624 cut-off events. [2021-06-10 14:59:05,130 INFO L130 PetriNetUnfolder]: For 213575/214515 co-relation queries the response was YES. [2021-06-10 14:59:05,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32338 conditions, 3624 events. 17/3624 cut-off events. For 213575/214515 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 56927 event pairs, 17 based on Foata normal form. 21/3562 useless extension candidates. Maximal degree in co-relation 32146. Up to 606 conditions per place. [2021-06-10 14:59:05,168 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 401 selfloop transitions, 264 changer transitions 3/686 dead transitions. [2021-06-10 14:59:05,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 864 places, 686 transitions, 42359 flow [2021-06-10 14:59:05,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:05,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:05,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:05,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:05,170 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:05,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:05,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:05,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:05,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:05,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:05,170 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:05,170 INFO L185 Difference]: Start difference. First operand has 858 places, 680 transitions, 40917 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:05,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 864 places, 686 transitions, 42359 flow [2021-06-10 14:59:07,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 860 places, 686 transitions, 41912 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-06-10 14:59:07,107 INFO L241 Difference]: Finished difference. Result has 861 places, 677 transitions, 40766 flow [2021-06-10 14:59:07,107 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=40478, PETRI_DIFFERENCE_MINUEND_PLACES=853, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40766, PETRI_PLACES=861, PETRI_TRANSITIONS=677} [2021-06-10 14:59:07,107 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 817 predicate places. [2021-06-10 14:59:07,108 INFO L480 AbstractCegarLoop]: Abstraction has has 861 places, 677 transitions, 40766 flow [2021-06-10 14:59:07,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:07,108 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:07,108 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:07,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-06-10 14:59:07,108 INFO L428 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:07,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:07,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1494104425, now seen corresponding path program 240 times [2021-06-10 14:59:07,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:07,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775573523] [2021-06-10 14:59:07,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:07,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:07,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:07,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:07,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:07,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:07,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:07,128 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:59:07,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:59:07,138 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:59:07,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:59:07,153 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:59:07,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:59:07,171 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:07,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:07,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775573523] [2021-06-10 14:59:07,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:07,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:07,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390482259] [2021-06-10 14:59:07,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:07,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:07,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:07,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:07,190 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:07,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 861 places, 677 transitions, 40766 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:07,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:07,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:07,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:08,726 INFO L129 PetriNetUnfolder]: 17/3613 cut-off events. [2021-06-10 14:59:08,727 INFO L130 PetriNetUnfolder]: For 212278/213219 co-relation queries the response was YES. [2021-06-10 14:59:08,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32247 conditions, 3613 events. 17/3613 cut-off events. For 212278/213219 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 56633 event pairs, 17 based on Foata normal form. 19/3550 useless extension candidates. Maximal degree in co-relation 32055. Up to 606 conditions per place. [2021-06-10 14:59:08,765 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 398 selfloop transitions, 265 changer transitions 2/683 dead transitions. [2021-06-10 14:59:08,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 867 places, 683 transitions, 42202 flow [2021-06-10 14:59:08,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:08,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:08,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:08,766 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:08,766 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:08,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:08,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:08,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:08,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:08,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:08,767 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:08,767 INFO L185 Difference]: Start difference. First operand has 861 places, 677 transitions, 40766 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:08,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 867 places, 683 transitions, 42202 flow [2021-06-10 14:59:10,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 862 places, 683 transitions, 41678 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 14:59:10,753 INFO L241 Difference]: Finished difference. Result has 863 places, 675 transitions, 40631 flow [2021-06-10 14:59:10,753 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=40250, PETRI_DIFFERENCE_MINUEND_PLACES=855, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40631, PETRI_PLACES=863, PETRI_TRANSITIONS=675} [2021-06-10 14:59:10,753 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 819 predicate places. [2021-06-10 14:59:10,753 INFO L480 AbstractCegarLoop]: Abstraction has has 863 places, 675 transitions, 40631 flow [2021-06-10 14:59:10,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:10,753 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:10,753 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:10,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-06-10 14:59:10,754 INFO L428 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:10,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:10,754 INFO L82 PathProgramCache]: Analyzing trace with hash -249162649, now seen corresponding path program 241 times [2021-06-10 14:59:10,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:10,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575669512] [2021-06-10 14:59:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:10,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:10,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:10,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:10,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:10,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:10,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:10,771 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:59:10,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:59:10,781 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:59:10,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:59:10,794 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:59:10,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:59:10,812 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:10,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:10,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575669512] [2021-06-10 14:59:10,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:10,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:10,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389449555] [2021-06-10 14:59:10,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:10,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:10,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:10,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:10,831 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:10,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 863 places, 675 transitions, 40631 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:10,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:10,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:10,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:12,310 INFO L129 PetriNetUnfolder]: 17/3596 cut-off events. [2021-06-10 14:59:12,310 INFO L130 PetriNetUnfolder]: For 210647/211596 co-relation queries the response was YES. [2021-06-10 14:59:12,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32042 conditions, 3596 events. 17/3596 cut-off events. For 210647/211596 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 56370 event pairs, 17 based on Foata normal form. 21/3535 useless extension candidates. Maximal degree in co-relation 31850. Up to 606 conditions per place. [2021-06-10 14:59:12,347 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 416 selfloop transitions, 244 changer transitions 3/681 dead transitions. [2021-06-10 14:59:12,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 868 places, 681 transitions, 42063 flow [2021-06-10 14:59:12,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:12,348 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:12,348 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:12,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:12,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:12,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:12,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:12,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:12,349 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:12,349 INFO L185 Difference]: Start difference. First operand has 863 places, 675 transitions, 40631 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:12,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 868 places, 681 transitions, 42063 flow [2021-06-10 14:59:14,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 863 places, 681 transitions, 41534 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-06-10 14:59:14,330 INFO L241 Difference]: Finished difference. Result has 864 places, 672 transitions, 40373 flow [2021-06-10 14:59:14,330 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=40110, PETRI_DIFFERENCE_MINUEND_PLACES=856, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40373, PETRI_PLACES=864, PETRI_TRANSITIONS=672} [2021-06-10 14:59:14,330 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 820 predicate places. [2021-06-10 14:59:14,330 INFO L480 AbstractCegarLoop]: Abstraction has has 864 places, 672 transitions, 40373 flow [2021-06-10 14:59:14,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:14,330 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:14,330 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:14,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-06-10 14:59:14,330 INFO L428 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1337318731, now seen corresponding path program 242 times [2021-06-10 14:59:14,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:14,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751574839] [2021-06-10 14:59:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:14,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:14,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:14,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:14,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:14,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:14,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:14,348 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:59:14,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:59:14,358 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:59:14,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:59:14,372 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:59:14,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:59:14,390 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:14,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:14,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751574839] [2021-06-10 14:59:14,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:14,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:14,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963958534] [2021-06-10 14:59:14,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:14,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:14,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:14,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:14,408 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:14,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 864 places, 672 transitions, 40373 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:14,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:14,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:14,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:15,990 INFO L129 PetriNetUnfolder]: 17/3583 cut-off events. [2021-06-10 14:59:15,990 INFO L130 PetriNetUnfolder]: For 209366/210321 co-relation queries the response was YES. [2021-06-10 14:59:16,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31907 conditions, 3583 events. 17/3583 cut-off events. For 209366/210321 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 56123 event pairs, 17 based on Foata normal form. 21/3522 useless extension candidates. Maximal degree in co-relation 31715. Up to 606 conditions per place. [2021-06-10 14:59:16,024 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 424 selfloop transitions, 234 changer transitions 2/678 dead transitions. [2021-06-10 14:59:16,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 678 transitions, 41799 flow [2021-06-10 14:59:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:16,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 14:59:16,025 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 14:59:16,025 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 14:59:16,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 14:59:16,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:16,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 14:59:16,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:16,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:16,026 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:16,026 INFO L185 Difference]: Start difference. First operand has 864 places, 672 transitions, 40373 flow. Second operand 8 states and 466 transitions. [2021-06-10 14:59:16,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 678 transitions, 41799 flow [2021-06-10 14:59:17,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 865 places, 678 transitions, 41319 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 14:59:17,900 INFO L241 Difference]: Finished difference. Result has 866 places, 670 transitions, 40222 flow [2021-06-10 14:59:17,900 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39901, PETRI_DIFFERENCE_MINUEND_PLACES=858, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40222, PETRI_PLACES=866, PETRI_TRANSITIONS=670} [2021-06-10 14:59:17,900 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 822 predicate places. [2021-06-10 14:59:17,900 INFO L480 AbstractCegarLoop]: Abstraction has has 866 places, 670 transitions, 40222 flow [2021-06-10 14:59:17,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:17,900 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:17,900 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:17,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-06-10 14:59:17,900 INFO L428 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:17,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:17,901 INFO L82 PathProgramCache]: Analyzing trace with hash -297765809, now seen corresponding path program 243 times [2021-06-10 14:59:17,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:17,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392642661] [2021-06-10 14:59:17,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:17,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:17,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:17,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:17,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:17,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:17,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:17,918 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:59:17,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:59:17,928 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:59:17,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:59:17,952 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:59:17,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:59:17,970 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:17,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:17,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392642661] [2021-06-10 14:59:17,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:17,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:17,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707480001] [2021-06-10 14:59:17,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:17,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:17,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:17,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:17,989 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:17,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 866 places, 670 transitions, 40222 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:17,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:17,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:17,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:19,486 INFO L129 PetriNetUnfolder]: 17/3572 cut-off events. [2021-06-10 14:59:19,486 INFO L130 PetriNetUnfolder]: For 208626/209590 co-relation queries the response was YES. [2021-06-10 14:59:19,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31818 conditions, 3572 events. 17/3572 cut-off events. For 208626/209590 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 55918 event pairs, 17 based on Foata normal form. 21/3511 useless extension candidates. Maximal degree in co-relation 31626. Up to 606 conditions per place. [2021-06-10 14:59:19,533 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 418 selfloop transitions, 237 changer transitions 3/676 dead transitions. [2021-06-10 14:59:19,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 871 places, 676 transitions, 41644 flow [2021-06-10 14:59:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:19,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 14:59:19,534 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 14:59:19,534 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 14:59:19,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 14:59:19,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:19,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 14:59:19,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:19,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:19,535 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:19,535 INFO L185 Difference]: Start difference. First operand has 866 places, 670 transitions, 40222 flow. Second operand 8 states and 466 transitions. [2021-06-10 14:59:19,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 871 places, 676 transitions, 41644 flow [2021-06-10 14:59:21,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 866 places, 676 transitions, 41172 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 14:59:21,453 INFO L241 Difference]: Finished difference. Result has 867 places, 667 transitions, 40025 flow [2021-06-10 14:59:21,454 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39758, PETRI_DIFFERENCE_MINUEND_PLACES=859, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40025, PETRI_PLACES=867, PETRI_TRANSITIONS=667} [2021-06-10 14:59:21,454 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 823 predicate places. [2021-06-10 14:59:21,454 INFO L480 AbstractCegarLoop]: Abstraction has has 867 places, 667 transitions, 40025 flow [2021-06-10 14:59:21,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:21,454 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:21,454 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:21,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-06-10 14:59:21,454 INFO L428 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:21,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:21,454 INFO L82 PathProgramCache]: Analyzing trace with hash 563970305, now seen corresponding path program 244 times [2021-06-10 14:59:21,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:21,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632949265] [2021-06-10 14:59:21,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:21,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:21,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:21,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:21,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:21,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:21,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:21,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:21,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:59:21,480 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:59:21,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:59:21,494 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:59:21,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:59:21,512 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:21,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:21,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:21,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632949265] [2021-06-10 14:59:21,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:21,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:21,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674054470] [2021-06-10 14:59:21,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:21,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:21,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:21,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:21,531 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:21,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 867 places, 667 transitions, 40025 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:21,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:21,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:21,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:23,013 INFO L129 PetriNetUnfolder]: 17/3559 cut-off events. [2021-06-10 14:59:23,013 INFO L130 PetriNetUnfolder]: For 207560/208495 co-relation queries the response was YES. [2021-06-10 14:59:23,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31694 conditions, 3559 events. 17/3559 cut-off events. For 207560/208495 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 55654 event pairs, 17 based on Foata normal form. 19/3496 useless extension candidates. Maximal degree in co-relation 31502. Up to 606 conditions per place. [2021-06-10 14:59:23,050 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 411 selfloop transitions, 242 changer transitions 2/673 dead transitions. [2021-06-10 14:59:23,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 872 places, 673 transitions, 41441 flow [2021-06-10 14:59:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:23,051 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:23,051 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:23,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:23,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:23,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:23,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:23,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:23,052 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:23,052 INFO L185 Difference]: Start difference. First operand has 867 places, 667 transitions, 40025 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:23,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 872 places, 673 transitions, 41441 flow [2021-06-10 14:59:24,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 866 places, 673 transitions, 40957 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-10 14:59:24,939 INFO L241 Difference]: Finished difference. Result has 868 places, 667 transitions, 40078 flow [2021-06-10 14:59:24,939 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39549, PETRI_DIFFERENCE_MINUEND_PLACES=859, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40078, PETRI_PLACES=868, PETRI_TRANSITIONS=667} [2021-06-10 14:59:24,939 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 824 predicate places. [2021-06-10 14:59:24,939 INFO L480 AbstractCegarLoop]: Abstraction has has 868 places, 667 transitions, 40078 flow [2021-06-10 14:59:24,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:24,940 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:24,940 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:24,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-06-10 14:59:24,940 INFO L428 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:24,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:24,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1897759309, now seen corresponding path program 245 times [2021-06-10 14:59:24,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:24,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634652983] [2021-06-10 14:59:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:24,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:24,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:24,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:24,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:24,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:24,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:24,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:24,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:59:24,966 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:59:24,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:59:24,988 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:59:24,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:59:25,010 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:25,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:25,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634652983] [2021-06-10 14:59:25,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:25,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:25,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653965998] [2021-06-10 14:59:25,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:25,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:25,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:25,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:25,028 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:25,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 868 places, 667 transitions, 40078 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:25,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:25,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:25,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:26,483 INFO L129 PetriNetUnfolder]: 17/3548 cut-off events. [2021-06-10 14:59:26,484 INFO L130 PetriNetUnfolder]: For 209659/210669 co-relation queries the response was YES. [2021-06-10 14:59:26,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31644 conditions, 3548 events. 17/3548 cut-off events. For 209659/210669 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 55464 event pairs, 17 based on Foata normal form. 21/3487 useless extension candidates. Maximal degree in co-relation 31452. Up to 606 conditions per place. [2021-06-10 14:59:26,521 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 409 selfloop transitions, 242 changer transitions 2/671 dead transitions. [2021-06-10 14:59:26,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 874 places, 671 transitions, 41400 flow [2021-06-10 14:59:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:26,522 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:26,522 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:26,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:26,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:26,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:26,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:26,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:26,522 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:26,522 INFO L185 Difference]: Start difference. First operand has 868 places, 667 transitions, 40078 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:26,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 874 places, 671 transitions, 41400 flow [2021-06-10 14:59:28,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 870 places, 671 transitions, 41037 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-06-10 14:59:28,396 INFO L241 Difference]: Finished difference. Result has 871 places, 665 transitions, 40064 flow [2021-06-10 14:59:28,396 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39723, PETRI_DIFFERENCE_MINUEND_PLACES=863, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40064, PETRI_PLACES=871, PETRI_TRANSITIONS=665} [2021-06-10 14:59:28,396 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 827 predicate places. [2021-06-10 14:59:28,396 INFO L480 AbstractCegarLoop]: Abstraction has has 871 places, 665 transitions, 40064 flow [2021-06-10 14:59:28,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:28,396 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:28,396 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:28,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-06-10 14:59:28,397 INFO L428 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:28,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:28,397 INFO L82 PathProgramCache]: Analyzing trace with hash -918179607, now seen corresponding path program 246 times [2021-06-10 14:59:28,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:28,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060071157] [2021-06-10 14:59:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:28,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:28,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:28,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:28,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:28,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:28,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:28,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:28,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:59:28,427 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:59:28,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:59:28,450 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:59:28,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:59:28,468 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:28,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:28,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060071157] [2021-06-10 14:59:28,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:28,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:28,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575183521] [2021-06-10 14:59:28,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:28,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:28,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:28,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:28,487 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:28,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 871 places, 665 transitions, 40064 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:28,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:28,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:28,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:30,022 INFO L129 PetriNetUnfolder]: 17/3537 cut-off events. [2021-06-10 14:59:30,022 INFO L130 PetriNetUnfolder]: For 209263/210285 co-relation queries the response was YES. [2021-06-10 14:59:30,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31692 conditions, 3537 events. 17/3537 cut-off events. For 209263/210285 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 55272 event pairs, 17 based on Foata normal form. 21/3476 useless extension candidates. Maximal degree in co-relation 31501. Up to 606 conditions per place. [2021-06-10 14:59:30,053 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 407 selfloop transitions, 241 changer transitions 3/669 dead transitions. [2021-06-10 14:59:30,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 877 places, 669 transitions, 41382 flow [2021-06-10 14:59:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:30,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:30,053 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:30,054 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:30,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:30,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:30,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:30,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:30,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:30,054 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:30,054 INFO L185 Difference]: Start difference. First operand has 871 places, 665 transitions, 40064 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:30,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 877 places, 669 transitions, 41382 flow [2021-06-10 14:59:31,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 874 places, 669 transitions, 41029 flow, removed 11 selfloop flow, removed 3 redundant places. [2021-06-10 14:59:31,845 INFO L241 Difference]: Finished difference. Result has 875 places, 662 transitions, 40008 flow [2021-06-10 14:59:31,846 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39719, PETRI_DIFFERENCE_MINUEND_PLACES=867, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40008, PETRI_PLACES=875, PETRI_TRANSITIONS=662} [2021-06-10 14:59:31,846 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 831 predicate places. [2021-06-10 14:59:31,846 INFO L480 AbstractCegarLoop]: Abstraction has has 875 places, 662 transitions, 40008 flow [2021-06-10 14:59:31,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:31,846 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:31,846 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:31,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-06-10 14:59:31,846 INFO L428 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:31,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:31,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1228199997, now seen corresponding path program 247 times [2021-06-10 14:59:31,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:31,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385623423] [2021-06-10 14:59:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:31,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:31,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:31,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:31,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:31,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:31,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:31,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:31,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:59:31,872 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:59:31,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:59:31,885 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:59:31,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:59:31,904 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:31,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:31,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385623423] [2021-06-10 14:59:31,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:31,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:31,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586399199] [2021-06-10 14:59:31,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:31,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:31,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:31,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:31,929 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:31,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 875 places, 662 transitions, 40008 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:31,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:31,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:31,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:33,414 INFO L129 PetriNetUnfolder]: 17/3524 cut-off events. [2021-06-10 14:59:33,414 INFO L130 PetriNetUnfolder]: For 208827/209849 co-relation queries the response was YES. [2021-06-10 14:59:33,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31720 conditions, 3524 events. 17/3524 cut-off events. For 208827/209849 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 55031 event pairs, 17 based on Foata normal form. 21/3463 useless extension candidates. Maximal degree in co-relation 31529. Up to 606 conditions per place. [2021-06-10 14:59:33,453 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 402 selfloop transitions, 244 changer transitions 2/666 dead transitions. [2021-06-10 14:59:33,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 881 places, 666 transitions, 41320 flow [2021-06-10 14:59:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:33,454 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:33,454 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:33,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:33,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:33,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:33,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:33,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:33,454 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:33,454 INFO L185 Difference]: Start difference. First operand has 875 places, 662 transitions, 40008 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:33,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 881 places, 666 transitions, 41320 flow [2021-06-10 14:59:35,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 875 places, 666 transitions, 40832 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-06-10 14:59:35,440 INFO L241 Difference]: Finished difference. Result has 876 places, 660 transitions, 39854 flow [2021-06-10 14:59:35,441 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39528, PETRI_DIFFERENCE_MINUEND_PLACES=868, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39854, PETRI_PLACES=876, PETRI_TRANSITIONS=660} [2021-06-10 14:59:35,441 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 832 predicate places. [2021-06-10 14:59:35,441 INFO L480 AbstractCegarLoop]: Abstraction has has 876 places, 660 transitions, 39854 flow [2021-06-10 14:59:35,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:35,441 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:35,441 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:35,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-06-10 14:59:35,441 INFO L428 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:35,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:35,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1146621197, now seen corresponding path program 248 times [2021-06-10 14:59:35,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:35,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948877084] [2021-06-10 14:59:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:35,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:35,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:35,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:35,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:35,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:35,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:35,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:35,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:59:35,474 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:59:35,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:59:35,487 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:59:35,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:59:35,506 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:35,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:35,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948877084] [2021-06-10 14:59:35,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:35,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:35,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849031917] [2021-06-10 14:59:35,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:35,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:35,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:35,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:35,525 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:35,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 660 transitions, 39854 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:35,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:35,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:35,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:37,015 INFO L129 PetriNetUnfolder]: 17/3515 cut-off events. [2021-06-10 14:59:37,015 INFO L130 PetriNetUnfolder]: For 207853/208876 co-relation queries the response was YES. [2021-06-10 14:59:37,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31627 conditions, 3515 events. 17/3515 cut-off events. For 207853/208876 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 54767 event pairs, 17 based on Foata normal form. 19/3453 useless extension candidates. Maximal degree in co-relation 31437. Up to 606 conditions per place. [2021-06-10 14:59:37,052 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 402 selfloop transitions, 242 changer transitions 2/664 dead transitions. [2021-06-10 14:59:37,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 881 places, 664 transitions, 41162 flow [2021-06-10 14:59:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:37,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:37,053 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:37,053 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:37,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:37,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:37,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:37,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:37,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:37,054 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:37,054 INFO L185 Difference]: Start difference. First operand has 876 places, 660 transitions, 39854 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:37,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 881 places, 664 transitions, 41162 flow [2021-06-10 14:59:38,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 664 transitions, 40611 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-06-10 14:59:39,019 INFO L241 Difference]: Finished difference. Result has 877 places, 658 transitions, 39654 flow [2021-06-10 14:59:39,019 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39311, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39654, PETRI_PLACES=877, PETRI_TRANSITIONS=658} [2021-06-10 14:59:39,019 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 833 predicate places. [2021-06-10 14:59:39,019 INFO L480 AbstractCegarLoop]: Abstraction has has 877 places, 658 transitions, 39654 flow [2021-06-10 14:59:39,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:39,019 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:39,019 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:39,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-06-10 14:59:39,019 INFO L428 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:39,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:39,020 INFO L82 PathProgramCache]: Analyzing trace with hash 938819279, now seen corresponding path program 249 times [2021-06-10 14:59:39,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:39,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906829565] [2021-06-10 14:59:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:39,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:39,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:39,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:39,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:39,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:39,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:39,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:39,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:59:39,046 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:59:39,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:59:39,060 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:59:39,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:59:39,078 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:39,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:39,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906829565] [2021-06-10 14:59:39,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:39,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:39,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805804799] [2021-06-10 14:59:39,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:39,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:39,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:39,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:39,096 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:39,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 877 places, 658 transitions, 39654 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:39,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:39,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:39,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:40,555 INFO L129 PetriNetUnfolder]: 17/3502 cut-off events. [2021-06-10 14:59:40,555 INFO L130 PetriNetUnfolder]: For 206417/207416 co-relation queries the response was YES. [2021-06-10 14:59:40,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31427 conditions, 3502 events. 17/3502 cut-off events. For 206417/207416 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 54539 event pairs, 17 based on Foata normal form. 19/3440 useless extension candidates. Maximal degree in co-relation 31237. Up to 606 conditions per place. [2021-06-10 14:59:40,590 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 405 selfloop transitions, 235 changer transitions 3/661 dead transitions. [2021-06-10 14:59:40,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 883 places, 661 transitions, 40952 flow [2021-06-10 14:59:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 14:59:40,591 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 14:59:40,591 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 14:59:40,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 14:59:40,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:40,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 14:59:40,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:40,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:40,592 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:40,592 INFO L185 Difference]: Start difference. First operand has 877 places, 658 transitions, 39654 flow. Second operand 8 states and 466 transitions. [2021-06-10 14:59:40,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 883 places, 661 transitions, 40952 flow [2021-06-10 14:59:42,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 661 transitions, 40472 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-06-10 14:59:42,446 INFO L241 Difference]: Finished difference. Result has 879 places, 655 transitions, 39473 flow [2021-06-10 14:59:42,446 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39180, PETRI_DIFFERENCE_MINUEND_PLACES=871, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39473, PETRI_PLACES=879, PETRI_TRANSITIONS=655} [2021-06-10 14:59:42,446 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 835 predicate places. [2021-06-10 14:59:42,446 INFO L480 AbstractCegarLoop]: Abstraction has has 879 places, 655 transitions, 39473 flow [2021-06-10 14:59:42,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:42,446 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:42,446 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:42,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-06-10 14:59:42,447 INFO L428 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:42,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:42,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1609242639, now seen corresponding path program 250 times [2021-06-10 14:59:42,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:42,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173773417] [2021-06-10 14:59:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:42,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:42,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:42,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:42,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:42,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:42,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:42,467 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:59:42,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:59:42,477 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:59:42,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:59:42,491 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:59:42,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:59:42,509 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:42,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:42,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173773417] [2021-06-10 14:59:42,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:42,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:42,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257765712] [2021-06-10 14:59:42,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:42,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:42,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:42,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:42,528 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:42,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 879 places, 655 transitions, 39473 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:42,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:42,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:42,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:43,947 INFO L129 PetriNetUnfolder]: 17/3445 cut-off events. [2021-06-10 14:59:43,947 INFO L130 PetriNetUnfolder]: For 201553/202076 co-relation queries the response was YES. [2021-06-10 14:59:43,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30736 conditions, 3445 events. 17/3445 cut-off events. For 201553/202076 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 53608 event pairs, 4 based on Foata normal form. 30/3394 useless extension candidates. Maximal degree in co-relation 30546. Up to 525 conditions per place. [2021-06-10 14:59:43,985 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 403 selfloop transitions, 274 changer transitions 1/696 dead transitions. [2021-06-10 14:59:43,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 696 transitions, 42756 flow [2021-06-10 14:59:43,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:43,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:43,986 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:43,986 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:43,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:43,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:43,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:43,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:43,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:43,987 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:43,987 INFO L185 Difference]: Start difference. First operand has 879 places, 655 transitions, 39473 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:43,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 696 transitions, 42756 flow [2021-06-10 14:59:45,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 696 transitions, 42246 flow, removed 11 selfloop flow, removed 8 redundant places. [2021-06-10 14:59:45,766 INFO L241 Difference]: Finished difference. Result has 878 places, 661 transitions, 39999 flow [2021-06-10 14:59:45,766 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=38981, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39999, PETRI_PLACES=878, PETRI_TRANSITIONS=661} [2021-06-10 14:59:45,766 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 834 predicate places. [2021-06-10 14:59:45,766 INFO L480 AbstractCegarLoop]: Abstraction has has 878 places, 661 transitions, 39999 flow [2021-06-10 14:59:45,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:45,766 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:45,766 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:45,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-06-10 14:59:45,766 INFO L428 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:45,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:45,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1598307503, now seen corresponding path program 251 times [2021-06-10 14:59:45,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:45,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405617802] [2021-06-10 14:59:45,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:45,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:45,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:45,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:45,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:45,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:45,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:45,789 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:59:45,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:59:45,799 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:59:45,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:59:45,813 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:59:45,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:59:45,832 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:45,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:45,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405617802] [2021-06-10 14:59:45,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:45,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:45,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543604746] [2021-06-10 14:59:45,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:45,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:45,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:45,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:45,850 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:45,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 878 places, 661 transitions, 39999 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:45,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:45,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:45,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:47,256 INFO L129 PetriNetUnfolder]: 17/3440 cut-off events. [2021-06-10 14:59:47,256 INFO L130 PetriNetUnfolder]: For 200819/200931 co-relation queries the response was YES. [2021-06-10 14:59:47,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30734 conditions, 3440 events. 17/3440 cut-off events. For 200819/200931 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 53460 event pairs, 4 based on Foata normal form. 7/3368 useless extension candidates. Maximal degree in co-relation 30546. Up to 525 conditions per place. [2021-06-10 14:59:47,292 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 403 selfloop transitions, 272 changer transitions 2/695 dead transitions. [2021-06-10 14:59:47,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 883 places, 695 transitions, 42784 flow [2021-06-10 14:59:47,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:47,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:47,293 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:47,293 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:47,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:47,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:47,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:47,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:47,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:47,294 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:47,294 INFO L185 Difference]: Start difference. First operand has 878 places, 661 transitions, 39999 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:47,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 883 places, 695 transitions, 42784 flow [2021-06-10 14:59:49,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 880 places, 695 transitions, 42236 flow, removed 107 selfloop flow, removed 3 redundant places. [2021-06-10 14:59:49,040 INFO L241 Difference]: Finished difference. Result has 882 places, 660 transitions, 39951 flow [2021-06-10 14:59:49,041 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39459, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39951, PETRI_PLACES=882, PETRI_TRANSITIONS=660} [2021-06-10 14:59:49,041 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 838 predicate places. [2021-06-10 14:59:49,041 INFO L480 AbstractCegarLoop]: Abstraction has has 882 places, 660 transitions, 39951 flow [2021-06-10 14:59:49,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:49,041 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:49,041 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:49,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-06-10 14:59:49,041 INFO L428 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:49,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:49,041 INFO L82 PathProgramCache]: Analyzing trace with hash -444840187, now seen corresponding path program 252 times [2021-06-10 14:59:49,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:49,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778122866] [2021-06-10 14:59:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:49,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:49,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:49,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:49,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:49,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:59:49,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:59:49,065 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:59:49,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:59:49,084 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:59:49,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:59:49,104 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:59:49,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:59:49,131 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:49,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:49,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778122866] [2021-06-10 14:59:49,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:49,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:49,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551150699] [2021-06-10 14:59:49,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:49,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:49,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:49,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:49,153 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:49,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 882 places, 660 transitions, 39951 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:49,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:49,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:49,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:50,698 INFO L129 PetriNetUnfolder]: 14/3859 cut-off events. [2021-06-10 14:59:50,698 INFO L130 PetriNetUnfolder]: For 216863/217350 co-relation queries the response was YES. [2021-06-10 14:59:50,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33501 conditions, 3859 events. 14/3859 cut-off events. For 216863/217350 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 61470 event pairs, 4 based on Foata normal form. 10/3786 useless extension candidates. Maximal degree in co-relation 33312. Up to 611 conditions per place. [2021-06-10 14:59:50,739 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 519 selfloop transitions, 248 changer transitions 3/788 dead transitions. [2021-06-10 14:59:50,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 887 places, 788 transitions, 47575 flow [2021-06-10 14:59:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:50,740 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:50,740 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:50,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:50,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:50,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:50,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:50,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:50,740 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:50,741 INFO L185 Difference]: Start difference. First operand has 882 places, 660 transitions, 39951 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:50,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 887 places, 788 transitions, 47575 flow [2021-06-10 14:59:52,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 883 places, 788 transitions, 47305 flow, removed 21 selfloop flow, removed 4 redundant places. [2021-06-10 14:59:52,794 INFO L241 Difference]: Finished difference. Result has 889 places, 700 transitions, 42769 flow [2021-06-10 14:59:52,795 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=39731, PETRI_DIFFERENCE_MINUEND_PLACES=876, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=42769, PETRI_PLACES=889, PETRI_TRANSITIONS=700} [2021-06-10 14:59:52,795 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 845 predicate places. [2021-06-10 14:59:52,795 INFO L480 AbstractCegarLoop]: Abstraction has has 889 places, 700 transitions, 42769 flow [2021-06-10 14:59:52,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:52,795 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:52,795 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:52,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-06-10 14:59:52,795 INFO L428 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:52,795 INFO L82 PathProgramCache]: Analyzing trace with hash 904123161, now seen corresponding path program 253 times [2021-06-10 14:59:52,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:52,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622461530] [2021-06-10 14:59:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:52,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:52,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:52,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:52,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:52,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:52,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:52,813 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:59:52,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:59:52,824 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:59:52,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:59:52,838 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 14:59:52,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 14:59:52,856 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:52,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:52,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622461530] [2021-06-10 14:59:52,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:52,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:52,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123344201] [2021-06-10 14:59:52,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:52,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:52,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:52,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:52,875 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:52,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 700 transitions, 42769 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:52,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:52,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:52,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:54,597 INFO L129 PetriNetUnfolder]: 14/3848 cut-off events. [2021-06-10 14:59:54,597 INFO L130 PetriNetUnfolder]: For 226977/227477 co-relation queries the response was YES. [2021-06-10 14:59:54,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33984 conditions, 3848 events. 14/3848 cut-off events. For 226977/227477 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 61303 event pairs, 2 based on Foata normal form. 30/3798 useless extension candidates. Maximal degree in co-relation 33791. Up to 580 conditions per place. [2021-06-10 14:59:54,634 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 427 selfloop transitions, 289 changer transitions 2/736 dead transitions. [2021-06-10 14:59:54,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 895 places, 736 transitions, 45751 flow [2021-06-10 14:59:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:54,635 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:54,635 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:54,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:54,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:54,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:54,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:54,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:54,636 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:54,636 INFO L185 Difference]: Start difference. First operand has 889 places, 700 transitions, 42769 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:54,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 895 places, 736 transitions, 45751 flow [2021-06-10 14:59:56,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 736 transitions, 45618 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-06-10 14:59:56,829 INFO L241 Difference]: Finished difference. Result has 893 places, 701 transitions, 43328 flow [2021-06-10 14:59:56,829 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=42658, PETRI_DIFFERENCE_MINUEND_PLACES=884, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43328, PETRI_PLACES=893, PETRI_TRANSITIONS=701} [2021-06-10 14:59:56,829 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 849 predicate places. [2021-06-10 14:59:56,829 INFO L480 AbstractCegarLoop]: Abstraction has has 893 places, 701 transitions, 43328 flow [2021-06-10 14:59:56,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:56,829 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:59:56,830 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:59:56,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-06-10 14:59:56,830 INFO L428 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:59:56,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:59:56,830 INFO L82 PathProgramCache]: Analyzing trace with hash 526168233, now seen corresponding path program 254 times [2021-06-10 14:59:56,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:59:56,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100966524] [2021-06-10 14:59:56,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:59:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:59:56,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:56,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:59:56,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:56,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:59:56,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:59:56,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:59:56,848 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 14:59:56,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 14:59:56,858 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:59:56,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:59:56,872 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:59:56,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:59:56,891 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 14:59:56,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:59:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:59:56,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100966524] [2021-06-10 14:59:56,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:59:56,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 14:59:56,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333723540] [2021-06-10 14:59:56,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 14:59:56,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:59:56,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 14:59:56,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 14:59:56,909 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 14:59:56,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 701 transitions, 43328 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:56,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:59:56,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 14:59:56,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:59:58,610 INFO L129 PetriNetUnfolder]: 14/3840 cut-off events. [2021-06-10 14:59:58,611 INFO L130 PetriNetUnfolder]: For 230082/230582 co-relation queries the response was YES. [2021-06-10 14:59:58,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34246 conditions, 3840 events. 14/3840 cut-off events. For 230082/230582 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 61139 event pairs, 2 based on Foata normal form. 30/3791 useless extension candidates. Maximal degree in co-relation 34054. Up to 580 conditions per place. [2021-06-10 14:59:58,661 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 427 selfloop transitions, 288 changer transitions 1/734 dead transitions. [2021-06-10 14:59:58,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 898 places, 734 transitions, 46094 flow [2021-06-10 14:59:58,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 14:59:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 14:59:58,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 14:59:58,662 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 14:59:58,662 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 14:59:58,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 14:59:58,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:59:58,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 14:59:58,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:58,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:58,663 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:59:58,663 INFO L185 Difference]: Start difference. First operand has 893 places, 701 transitions, 43328 flow. Second operand 8 states and 467 transitions. [2021-06-10 14:59:58,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 898 places, 734 transitions, 46094 flow [2021-06-10 15:00:00,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 734 transitions, 45534 flow, removed 23 selfloop flow, removed 5 redundant places. [2021-06-10 15:00:00,748 INFO L241 Difference]: Finished difference. Result has 894 places, 700 transitions, 43255 flow [2021-06-10 15:00:00,748 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=42776, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43255, PETRI_PLACES=894, PETRI_TRANSITIONS=700} [2021-06-10 15:00:00,749 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 850 predicate places. [2021-06-10 15:00:00,749 INFO L480 AbstractCegarLoop]: Abstraction has has 894 places, 700 transitions, 43255 flow [2021-06-10 15:00:00,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:00,749 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:00,749 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:00,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-06-10 15:00:00,749 INFO L428 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:00,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:00,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1923074817, now seen corresponding path program 255 times [2021-06-10 15:00:00,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:00,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416282550] [2021-06-10 15:00:00,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:00,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:00,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:00,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:00,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:00,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:00,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:00:00,767 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 15:00:00,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 15:00:00,777 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:00:00,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:00:00,791 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:00:00,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:00:00,809 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:00,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:00,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416282550] [2021-06-10 15:00:00,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:00,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:00,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139901399] [2021-06-10 15:00:00,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:00,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:00,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:00,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:00,828 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:00,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 894 places, 700 transitions, 43255 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:00,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:00,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:00,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:02,588 INFO L129 PetriNetUnfolder]: 14/3834 cut-off events. [2021-06-10 15:00:02,588 INFO L130 PetriNetUnfolder]: For 228639/229155 co-relation queries the response was YES. [2021-06-10 15:00:02,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34204 conditions, 3834 events. 14/3834 cut-off events. For 228639/229155 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 60912 event pairs, 4 based on Foata normal form. 30/3786 useless extension candidates. Maximal degree in co-relation 34013. Up to 580 conditions per place. [2021-06-10 15:00:02,639 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 425 selfloop transitions, 289 changer transitions 1/733 dead transitions. [2021-06-10 15:00:02,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 899 places, 733 transitions, 46019 flow [2021-06-10 15:00:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:00:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:00:02,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:00:02,641 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:00:02,641 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:00:02,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:00:02,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:02,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:00:02,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:02,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:02,641 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:02,641 INFO L185 Difference]: Start difference. First operand has 894 places, 700 transitions, 43255 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:00:02,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 899 places, 733 transitions, 46019 flow [2021-06-10 15:00:05,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 894 places, 733 transitions, 45447 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 15:00:05,212 INFO L241 Difference]: Finished difference. Result has 895 places, 699 transitions, 43173 flow [2021-06-10 15:00:05,213 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=42691, PETRI_DIFFERENCE_MINUEND_PLACES=887, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43173, PETRI_PLACES=895, PETRI_TRANSITIONS=699} [2021-06-10 15:00:05,213 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 851 predicate places. [2021-06-10 15:00:05,213 INFO L480 AbstractCegarLoop]: Abstraction has has 895 places, 699 transitions, 43173 flow [2021-06-10 15:00:05,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:05,213 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:05,213 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:05,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-06-10 15:00:05,213 INFO L428 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:05,214 INFO L82 PathProgramCache]: Analyzing trace with hash -306559541, now seen corresponding path program 256 times [2021-06-10 15:00:05,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:05,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653006893] [2021-06-10 15:00:05,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:05,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:05,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:05,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:05,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:05,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:05,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:00:05,237 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:00:05,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:00:05,261 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:00:05,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:00:05,292 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:00:05,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:00:05,311 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:05,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:05,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653006893] [2021-06-10 15:00:05,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:05,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:05,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273814020] [2021-06-10 15:00:05,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:05,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:05,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:05,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:05,331 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:05,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 895 places, 699 transitions, 43173 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:05,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:05,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:05,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:07,191 INFO L129 PetriNetUnfolder]: 14/3828 cut-off events. [2021-06-10 15:00:07,191 INFO L130 PetriNetUnfolder]: For 227994/228490 co-relation queries the response was YES. [2021-06-10 15:00:07,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34160 conditions, 3828 events. 14/3828 cut-off events. For 227994/228490 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 60914 event pairs, 2 based on Foata normal form. 22/3773 useless extension candidates. Maximal degree in co-relation 33969. Up to 580 conditions per place. [2021-06-10 15:00:07,233 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 415 selfloop transitions, 297 changer transitions 2/732 dead transitions. [2021-06-10 15:00:07,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 900 places, 732 transitions, 45935 flow [2021-06-10 15:00:07,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:00:07,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:00:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:00:07,234 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:00:07,234 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:00:07,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:00:07,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:07,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:00:07,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:07,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:07,234 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:07,234 INFO L185 Difference]: Start difference. First operand has 895 places, 699 transitions, 43173 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:00:07,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 900 places, 732 transitions, 45935 flow [2021-06-10 15:00:09,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 896 places, 732 transitions, 45396 flow, removed 16 selfloop flow, removed 4 redundant places. [2021-06-10 15:00:09,635 INFO L241 Difference]: Finished difference. Result has 899 places, 703 transitions, 43650 flow [2021-06-10 15:00:09,635 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=42648, PETRI_DIFFERENCE_MINUEND_PLACES=889, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43650, PETRI_PLACES=899, PETRI_TRANSITIONS=703} [2021-06-10 15:00:09,635 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 855 predicate places. [2021-06-10 15:00:09,635 INFO L480 AbstractCegarLoop]: Abstraction has has 899 places, 703 transitions, 43650 flow [2021-06-10 15:00:09,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:09,635 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:09,635 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:09,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-06-10 15:00:09,636 INFO L428 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:09,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1133044861, now seen corresponding path program 257 times [2021-06-10 15:00:09,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:09,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231179959] [2021-06-10 15:00:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:09,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:09,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:09,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:09,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:09,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:09,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:00:09,654 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 15:00:09,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 15:00:09,664 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:00:09,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:00:09,677 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:00:09,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:00:09,701 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:09,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:09,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231179959] [2021-06-10 15:00:09,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:09,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:09,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004335816] [2021-06-10 15:00:09,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:09,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:09,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:09,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:09,723 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:09,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 899 places, 703 transitions, 43650 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:09,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:09,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:09,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:11,441 INFO L129 PetriNetUnfolder]: 14/3818 cut-off events. [2021-06-10 15:00:11,441 INFO L130 PetriNetUnfolder]: For 229830/229945 co-relation queries the response was YES. [2021-06-10 15:00:11,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34198 conditions, 3818 events. 14/3818 cut-off events. For 229830/229945 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 60687 event pairs, 2 based on Foata normal form. 7/3748 useless extension candidates. Maximal degree in co-relation 34005. Up to 580 conditions per place. [2021-06-10 15:00:11,493 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 423 selfloop transitions, 286 changer transitions 3/730 dead transitions. [2021-06-10 15:00:11,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 730 transitions, 46085 flow [2021-06-10 15:00:11,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:00:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:00:11,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:00:11,494 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:00:11,494 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:00:11,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:00:11,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:11,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:00:11,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:11,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:11,495 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:11,495 INFO L185 Difference]: Start difference. First operand has 899 places, 703 transitions, 43650 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:00:11,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 730 transitions, 46085 flow [2021-06-10 15:00:13,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 899 places, 730 transitions, 45529 flow, removed 73 selfloop flow, removed 5 redundant places. [2021-06-10 15:00:13,867 INFO L241 Difference]: Finished difference. Result has 900 places, 700 transitions, 43458 flow [2021-06-10 15:00:13,867 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=43102, PETRI_DIFFERENCE_MINUEND_PLACES=892, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43458, PETRI_PLACES=900, PETRI_TRANSITIONS=700} [2021-06-10 15:00:13,867 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 856 predicate places. [2021-06-10 15:00:13,867 INFO L480 AbstractCegarLoop]: Abstraction has has 900 places, 700 transitions, 43458 flow [2021-06-10 15:00:13,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:13,867 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:13,867 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:13,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-06-10 15:00:13,868 INFO L428 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:13,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:13,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1810656953, now seen corresponding path program 258 times [2021-06-10 15:00:13,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:13,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322417793] [2021-06-10 15:00:13,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:13,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:13,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:13,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:13,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:13,880 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:00:13,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:00:13,891 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:00:13,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:00:13,907 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:00:13,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:00:13,930 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:00:13,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:00:13,950 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:13,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:13,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322417793] [2021-06-10 15:00:13,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:13,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:13,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618792161] [2021-06-10 15:00:13,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:13,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:13,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:13,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:13,971 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:13,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 900 places, 700 transitions, 43458 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:13,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:13,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:13,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:15,801 INFO L129 PetriNetUnfolder]: 12/3893 cut-off events. [2021-06-10 15:00:15,801 INFO L130 PetriNetUnfolder]: For 231632/231914 co-relation queries the response was YES. [2021-06-10 15:00:15,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34588 conditions, 3893 events. 12/3893 cut-off events. For 231632/231914 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 62121 event pairs, 6 based on Foata normal form. 8/3816 useless extension candidates. Maximal degree in co-relation 34396. Up to 601 conditions per place. [2021-06-10 15:00:15,840 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 517 selfloop transitions, 278 changer transitions 3/816 dead transitions. [2021-06-10 15:00:15,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 816 transitions, 50713 flow [2021-06-10 15:00:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:00:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:00:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:00:15,841 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:00:15,841 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:00:15,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:00:15,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:15,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:00:15,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:15,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:15,842 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:15,842 INFO L185 Difference]: Start difference. First operand has 900 places, 700 transitions, 43458 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:00:15,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 816 transitions, 50713 flow [2021-06-10 15:00:18,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 899 places, 816 transitions, 50027 flow, removed 18 selfloop flow, removed 6 redundant places. [2021-06-10 15:00:18,054 INFO L241 Difference]: Finished difference. Result has 905 places, 742 transitions, 46172 flow [2021-06-10 15:00:18,055 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=42872, PETRI_DIFFERENCE_MINUEND_PLACES=892, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46172, PETRI_PLACES=905, PETRI_TRANSITIONS=742} [2021-06-10 15:00:18,055 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 861 predicate places. [2021-06-10 15:00:18,055 INFO L480 AbstractCegarLoop]: Abstraction has has 905 places, 742 transitions, 46172 flow [2021-06-10 15:00:18,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:18,055 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:18,055 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:18,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-06-10 15:00:18,055 INFO L428 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:18,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:18,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1997791177, now seen corresponding path program 259 times [2021-06-10 15:00:18,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:18,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22676082] [2021-06-10 15:00:18,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:18,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:18,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:18,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:18,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:18,071 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:00:18,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:00:18,083 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:00:18,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:00:18,103 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:00:18,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:00:18,121 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:00:18,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:00:18,142 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:18,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:18,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22676082] [2021-06-10 15:00:18,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:18,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:18,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785571692] [2021-06-10 15:00:18,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:18,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:18,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:18,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:18,162 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:18,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 905 places, 742 transitions, 46172 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:18,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:18,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:18,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:20,037 INFO L129 PetriNetUnfolder]: 12/3881 cut-off events. [2021-06-10 15:00:20,037 INFO L130 PetriNetUnfolder]: For 239603/239911 co-relation queries the response was YES. [2021-06-10 15:00:20,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34759 conditions, 3881 events. 12/3881 cut-off events. For 239603/239911 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 61868 event pairs, 2 based on Foata normal form. 25/3831 useless extension candidates. Maximal degree in co-relation 34563. Up to 574 conditions per place. [2021-06-10 15:00:20,071 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 421 selfloop transitions, 333 changer transitions 1/773 dead transitions. [2021-06-10 15:00:20,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 911 places, 773 transitions, 48936 flow [2021-06-10 15:00:20,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:00:20,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:00:20,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:00:20,072 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:00:20,072 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:00:20,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:00:20,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:20,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:00:20,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:20,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:20,073 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:20,073 INFO L185 Difference]: Start difference. First operand has 905 places, 742 transitions, 46172 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:00:20,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 911 places, 773 transitions, 48936 flow [2021-06-10 15:00:22,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 905 places, 773 transitions, 48245 flow, removed 137 selfloop flow, removed 6 redundant places. [2021-06-10 15:00:22,176 INFO L241 Difference]: Finished difference. Result has 908 places, 747 transitions, 46639 flow [2021-06-10 15:00:22,176 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=45546, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46639, PETRI_PLACES=908, PETRI_TRANSITIONS=747} [2021-06-10 15:00:22,177 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 864 predicate places. [2021-06-10 15:00:22,177 INFO L480 AbstractCegarLoop]: Abstraction has has 908 places, 747 transitions, 46639 flow [2021-06-10 15:00:22,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:22,177 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:22,177 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:22,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-06-10 15:00:22,177 INFO L428 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:22,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:22,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1854849133, now seen corresponding path program 260 times [2021-06-10 15:00:22,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:22,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508528722] [2021-06-10 15:00:22,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:22,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:22,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:22,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:22,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:22,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:22,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:00:22,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:00:22,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:00:22,239 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:00:22,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:00:22,260 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:00:22,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:00:22,280 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:22,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:22,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508528722] [2021-06-10 15:00:22,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:22,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:22,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133677319] [2021-06-10 15:00:22,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:22,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:22,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:22,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:22,298 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:22,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 908 places, 747 transitions, 46639 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:22,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:22,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:22,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:24,150 INFO L129 PetriNetUnfolder]: 12/3877 cut-off events. [2021-06-10 15:00:24,150 INFO L130 PetriNetUnfolder]: For 241676/241808 co-relation queries the response was YES. [2021-06-10 15:00:24,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34737 conditions, 3877 events. 12/3877 cut-off events. For 241676/241808 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 61834 event pairs, 2 based on Foata normal form. 19/3821 useless extension candidates. Maximal degree in co-relation 34541. Up to 585 conditions per place. [2021-06-10 15:00:24,197 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 432 selfloop transitions, 320 changer transitions 2/772 dead transitions. [2021-06-10 15:00:24,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 913 places, 772 transitions, 49028 flow [2021-06-10 15:00:24,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:00:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:00:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:00:24,198 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:00:24,198 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:00:24,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:00:24,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:24,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:00:24,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:24,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:24,199 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:24,199 INFO L185 Difference]: Start difference. First operand has 908 places, 747 transitions, 46639 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:00:24,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 913 places, 772 transitions, 49028 flow [2021-06-10 15:00:26,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 908 places, 772 transitions, 48105 flow, removed 61 selfloop flow, removed 5 redundant places. [2021-06-10 15:00:26,632 INFO L241 Difference]: Finished difference. Result has 909 places, 745 transitions, 46232 flow [2021-06-10 15:00:26,633 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=45724, PETRI_DIFFERENCE_MINUEND_PLACES=901, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46232, PETRI_PLACES=909, PETRI_TRANSITIONS=745} [2021-06-10 15:00:26,633 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 865 predicate places. [2021-06-10 15:00:26,633 INFO L480 AbstractCegarLoop]: Abstraction has has 909 places, 745 transitions, 46232 flow [2021-06-10 15:00:26,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:26,633 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:26,633 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:26,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-06-10 15:00:26,633 INFO L428 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:26,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:26,633 INFO L82 PathProgramCache]: Analyzing trace with hash -451953855, now seen corresponding path program 261 times [2021-06-10 15:00:26,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:26,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141979836] [2021-06-10 15:00:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:26,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:26,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:26,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:26,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:26,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:26,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:00:26,659 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:00:26,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:00:26,677 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 15:00:26,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 15:00:26,701 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:00:26,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:00:26,750 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:26,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:26,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141979836] [2021-06-10 15:00:26,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:26,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:26,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002909928] [2021-06-10 15:00:26,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:26,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:26,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:26,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:26,771 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:26,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 909 places, 745 transitions, 46232 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:26,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:26,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:26,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:28,678 INFO L129 PetriNetUnfolder]: 12/3867 cut-off events. [2021-06-10 15:00:28,678 INFO L130 PetriNetUnfolder]: For 238349/238491 co-relation queries the response was YES. [2021-06-10 15:00:28,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34497 conditions, 3867 events. 12/3867 cut-off events. For 238349/238491 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 61650 event pairs, 4 based on Foata normal form. 19/3803 useless extension candidates. Maximal degree in co-relation 34301. Up to 585 conditions per place. [2021-06-10 15:00:28,731 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 433 selfloop transitions, 317 changer transitions 2/770 dead transitions. [2021-06-10 15:00:28,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 914 places, 770 transitions, 48617 flow [2021-06-10 15:00:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:00:28,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:00:28,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:00:28,732 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:00:28,732 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:00:28,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:00:28,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:28,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:00:28,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:28,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:28,733 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:28,733 INFO L185 Difference]: Start difference. First operand has 909 places, 745 transitions, 46232 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:00:28,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 914 places, 770 transitions, 48617 flow [2021-06-10 15:00:31,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 770 transitions, 47987 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 15:00:31,298 INFO L241 Difference]: Finished difference. Result has 910 places, 743 transitions, 46112 flow [2021-06-10 15:00:31,299 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=45610, PETRI_DIFFERENCE_MINUEND_PLACES=902, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46112, PETRI_PLACES=910, PETRI_TRANSITIONS=743} [2021-06-10 15:00:31,299 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 866 predicate places. [2021-06-10 15:00:31,299 INFO L480 AbstractCegarLoop]: Abstraction has has 910 places, 743 transitions, 46112 flow [2021-06-10 15:00:31,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:31,299 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:31,299 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:31,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-06-10 15:00:31,299 INFO L428 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:31,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:31,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1510601633, now seen corresponding path program 262 times [2021-06-10 15:00:31,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:31,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207027868] [2021-06-10 15:00:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:31,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:31,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:31,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:31,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:31,312 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:00:31,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:00:31,323 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 15:00:31,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 15:00:31,334 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:00:31,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:00:31,349 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:00:31,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:00:31,369 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:31,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:31,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207027868] [2021-06-10 15:00:31,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:31,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:31,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374440169] [2021-06-10 15:00:31,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:31,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:31,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:31,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:31,390 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:31,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 743 transitions, 46112 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:31,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:31,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:31,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:33,296 INFO L129 PetriNetUnfolder]: 12/3857 cut-off events. [2021-06-10 15:00:33,296 INFO L130 PetriNetUnfolder]: For 237567/237699 co-relation queries the response was YES. [2021-06-10 15:00:33,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34426 conditions, 3857 events. 12/3857 cut-off events. For 237567/237699 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 61477 event pairs, 2 based on Foata normal form. 25/3807 useless extension candidates. Maximal degree in co-relation 34230. Up to 573 conditions per place. [2021-06-10 15:00:33,358 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 427 selfloop transitions, 321 changer transitions 2/768 dead transitions. [2021-06-10 15:00:33,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 915 places, 768 transitions, 48493 flow [2021-06-10 15:00:33,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:00:33,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:00:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:00:33,359 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:00:33,360 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:00:33,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:00:33,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:33,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:00:33,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:33,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:33,360 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:33,360 INFO L185 Difference]: Start difference. First operand has 910 places, 743 transitions, 46112 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:00:33,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 915 places, 768 transitions, 48493 flow [2021-06-10 15:00:35,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 910 places, 768 transitions, 47898 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 15:00:35,765 INFO L241 Difference]: Finished difference. Result has 911 places, 741 transitions, 46015 flow [2021-06-10 15:00:35,765 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=45525, PETRI_DIFFERENCE_MINUEND_PLACES=903, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46015, PETRI_PLACES=911, PETRI_TRANSITIONS=741} [2021-06-10 15:00:35,765 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 867 predicate places. [2021-06-10 15:00:35,765 INFO L480 AbstractCegarLoop]: Abstraction has has 911 places, 741 transitions, 46015 flow [2021-06-10 15:00:35,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:35,765 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:35,765 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:35,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-06-10 15:00:35,766 INFO L428 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:35,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:35,766 INFO L82 PathProgramCache]: Analyzing trace with hash -577891447, now seen corresponding path program 263 times [2021-06-10 15:00:35,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:35,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785879688] [2021-06-10 15:00:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:35,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:35,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:35,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:35,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:35,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:35,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:00:35,794 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:00:35,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:00:35,813 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:00:35,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:00:35,829 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:00:35,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:00:35,851 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:35,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:35,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785879688] [2021-06-10 15:00:35,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:35,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:35,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221887014] [2021-06-10 15:00:35,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:35,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:35,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:35,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:35,876 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:35,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 911 places, 741 transitions, 46015 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:35,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:35,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:35,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:37,643 INFO L129 PetriNetUnfolder]: 12/3844 cut-off events. [2021-06-10 15:00:37,644 INFO L130 PetriNetUnfolder]: For 236281/236324 co-relation queries the response was YES. [2021-06-10 15:00:37,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34284 conditions, 3844 events. 12/3844 cut-off events. For 236281/236324 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 61186 event pairs, 2 based on Foata normal form. 9/3780 useless extension candidates. Maximal degree in co-relation 34088. Up to 585 conditions per place. [2021-06-10 15:00:37,695 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 426 selfloop transitions, 321 changer transitions 1/766 dead transitions. [2021-06-10 15:00:37,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 916 places, 766 transitions, 48392 flow [2021-06-10 15:00:37,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:00:37,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:00:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:00:37,696 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:00:37,696 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:00:37,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:00:37,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:37,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:00:37,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:37,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:37,697 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:37,697 INFO L185 Difference]: Start difference. First operand has 911 places, 741 transitions, 46015 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:00:37,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 916 places, 766 transitions, 48392 flow [2021-06-10 15:00:39,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 910 places, 766 transitions, 47750 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-10 15:00:39,972 INFO L241 Difference]: Finished difference. Result has 911 places, 740 transitions, 45944 flow [2021-06-10 15:00:39,972 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=45381, PETRI_DIFFERENCE_MINUEND_PLACES=903, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45944, PETRI_PLACES=911, PETRI_TRANSITIONS=740} [2021-06-10 15:00:39,972 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 867 predicate places. [2021-06-10 15:00:39,972 INFO L480 AbstractCegarLoop]: Abstraction has has 911 places, 740 transitions, 45944 flow [2021-06-10 15:00:39,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:39,973 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:39,973 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:39,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-06-10 15:00:39,973 INFO L428 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:39,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:39,973 INFO L82 PathProgramCache]: Analyzing trace with hash 86562315, now seen corresponding path program 264 times [2021-06-10 15:00:39,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:39,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225988198] [2021-06-10 15:00:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:39,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:39,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:39,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:39,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:39,984 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:00:39,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:00:39,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:00:39,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:00:40,015 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 15:00:40,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 15:00:40,040 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:00:40,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:00:40,058 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:40,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:40,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225988198] [2021-06-10 15:00:40,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:40,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:40,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753417603] [2021-06-10 15:00:40,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:40,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:40,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:40,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:40,078 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:40,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 911 places, 740 transitions, 45944 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:40,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:40,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:40,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:42,031 INFO L129 PetriNetUnfolder]: 11/4172 cut-off events. [2021-06-10 15:00:42,032 INFO L130 PetriNetUnfolder]: For 252398/252540 co-relation queries the response was YES. [2021-06-10 15:00:42,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36675 conditions, 4172 events. 11/4172 cut-off events. For 252398/252540 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 67480 event pairs, 7 based on Foata normal form. 8/4103 useless extension candidates. Maximal degree in co-relation 36480. Up to 597 conditions per place. [2021-06-10 15:00:42,073 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 466 selfloop transitions, 335 changer transitions 2/821 dead transitions. [2021-06-10 15:00:42,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 913 places, 821 transitions, 51538 flow [2021-06-10 15:00:42,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:00:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:00:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:00:42,074 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:00:42,074 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:00:42,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:00:42,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:42,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:00:42,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:42,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:42,075 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:42,075 INFO L185 Difference]: Start difference. First operand has 911 places, 740 transitions, 45944 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:00:42,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 913 places, 821 transitions, 51538 flow [2021-06-10 15:00:44,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 821 transitions, 50933 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-06-10 15:00:44,642 INFO L241 Difference]: Finished difference. Result has 915 places, 770 transitions, 48223 flow [2021-06-10 15:00:44,643 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=45383, PETRI_DIFFERENCE_MINUEND_PLACES=902, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48223, PETRI_PLACES=915, PETRI_TRANSITIONS=770} [2021-06-10 15:00:44,643 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 871 predicate places. [2021-06-10 15:00:44,643 INFO L480 AbstractCegarLoop]: Abstraction has has 915 places, 770 transitions, 48223 flow [2021-06-10 15:00:44,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:44,643 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:44,643 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:44,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-06-10 15:00:44,643 INFO L428 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:44,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:44,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1327173957, now seen corresponding path program 265 times [2021-06-10 15:00:44,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:44,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303727720] [2021-06-10 15:00:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:44,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:44,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:44,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:44,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:44,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:44,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:00:44,664 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:00:44,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:00:44,686 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:00:44,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:00:44,701 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:00:44,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:00:44,720 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:44,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:44,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303727720] [2021-06-10 15:00:44,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:44,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:44,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612497161] [2021-06-10 15:00:44,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:44,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:44,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:44,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:44,740 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:44,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 915 places, 770 transitions, 48223 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:44,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:44,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:44,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:47,175 INFO L129 PetriNetUnfolder]: 11/4162 cut-off events. [2021-06-10 15:00:47,175 INFO L130 PetriNetUnfolder]: For 261710/261854 co-relation queries the response was YES. [2021-06-10 15:00:47,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36956 conditions, 4162 events. 11/4162 cut-off events. For 261710/261854 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 67325 event pairs, 3 based on Foata normal form. 19/4106 useless extension candidates. Maximal degree in co-relation 36756. Up to 603 conditions per place. [2021-06-10 15:00:47,222 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 439 selfloop transitions, 336 changer transitions 2/795 dead transitions. [2021-06-10 15:00:47,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 921 places, 795 transitions, 50674 flow [2021-06-10 15:00:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:00:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:00:47,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:00:47,223 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:00:47,223 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:00:47,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:00:47,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:47,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:00:47,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:47,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:47,224 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:47,224 INFO L185 Difference]: Start difference. First operand has 915 places, 770 transitions, 48223 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:00:47,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 921 places, 795 transitions, 50674 flow [2021-06-10 15:00:49,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 917 places, 795 transitions, 50418 flow, removed 47 selfloop flow, removed 4 redundant places. [2021-06-10 15:00:49,931 INFO L241 Difference]: Finished difference. Result has 918 places, 768 transitions, 48510 flow [2021-06-10 15:00:49,931 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47980, PETRI_DIFFERENCE_MINUEND_PLACES=910, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48510, PETRI_PLACES=918, PETRI_TRANSITIONS=768} [2021-06-10 15:00:49,931 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 874 predicate places. [2021-06-10 15:00:49,931 INFO L480 AbstractCegarLoop]: Abstraction has has 918 places, 768 transitions, 48510 flow [2021-06-10 15:00:49,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:49,931 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:49,931 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:49,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-06-10 15:00:49,932 INFO L428 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:49,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1446582547, now seen corresponding path program 266 times [2021-06-10 15:00:49,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:49,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231825790] [2021-06-10 15:00:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:49,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:49,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:49,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:49,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:49,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:49,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:00:49,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:00:49,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:00:49,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 15:00:49,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 15:00:50,012 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:00:50,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:00:50,035 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:50,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:50,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231825790] [2021-06-10 15:00:50,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:50,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:50,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275809545] [2021-06-10 15:00:50,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:50,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:50,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:50,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:50,057 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:50,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 768 transitions, 48510 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:50,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:50,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:50,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:52,438 INFO L129 PetriNetUnfolder]: 11/4147 cut-off events. [2021-06-10 15:00:52,439 INFO L130 PetriNetUnfolder]: For 263863/264207 co-relation queries the response was YES. [2021-06-10 15:00:52,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37059 conditions, 4147 events. 11/4147 cut-off events. For 263863/264207 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 66988 event pairs, 3 based on Foata normal form. 25/4097 useless extension candidates. Maximal degree in co-relation 36860. Up to 603 conditions per place. [2021-06-10 15:00:52,492 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 441 selfloop transitions, 331 changer transitions 3/793 dead transitions. [2021-06-10 15:00:52,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 923 places, 793 transitions, 50952 flow [2021-06-10 15:00:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:00:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:00:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 15:00:52,493 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 15:00:52,493 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 15:00:52,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 15:00:52,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:52,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 15:00:52,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:52,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:52,494 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:52,494 INFO L185 Difference]: Start difference. First operand has 918 places, 768 transitions, 48510 flow. Second operand 8 states and 466 transitions. [2021-06-10 15:00:52,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 923 places, 793 transitions, 50952 flow [2021-06-10 15:00:54,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 918 places, 793 transitions, 50286 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 15:00:54,936 INFO L241 Difference]: Finished difference. Result has 919 places, 765 transitions, 48319 flow [2021-06-10 15:00:54,937 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47852, PETRI_DIFFERENCE_MINUEND_PLACES=911, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48319, PETRI_PLACES=919, PETRI_TRANSITIONS=765} [2021-06-10 15:00:54,937 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 875 predicate places. [2021-06-10 15:00:54,937 INFO L480 AbstractCegarLoop]: Abstraction has has 919 places, 765 transitions, 48319 flow [2021-06-10 15:00:54,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:54,937 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:54,937 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:54,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-06-10 15:00:54,937 INFO L428 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:54,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:54,937 INFO L82 PathProgramCache]: Analyzing trace with hash 410878973, now seen corresponding path program 267 times [2021-06-10 15:00:54,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:54,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977192116] [2021-06-10 15:00:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:54,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:54,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:54,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:54,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:54,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:54,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:00:54,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:54,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 15:00:54,977 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:00:54,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:00:54,991 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:00:54,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:00:55,011 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:55,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:55,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977192116] [2021-06-10 15:00:55,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:55,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:55,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128390162] [2021-06-10 15:00:55,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:55,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:55,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:55,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:55,031 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:55,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 919 places, 765 transitions, 48319 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:55,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:55,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:55,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:00:56,982 INFO L129 PetriNetUnfolder]: 11/4131 cut-off events. [2021-06-10 15:00:56,982 INFO L130 PetriNetUnfolder]: For 262796/263140 co-relation queries the response was YES. [2021-06-10 15:00:57,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36895 conditions, 4131 events. 11/4131 cut-off events. For 262796/263140 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 66678 event pairs, 3 based on Foata normal form. 25/4081 useless extension candidates. Maximal degree in co-relation 36696. Up to 603 conditions per place. [2021-06-10 15:00:57,026 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 439 selfloop transitions, 331 changer transitions 2/790 dead transitions. [2021-06-10 15:00:57,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 921 places, 790 transitions, 50755 flow [2021-06-10 15:00:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:00:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:00:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:00:57,027 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:00:57,027 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:00:57,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:00:57,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:00:57,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:00:57,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:57,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:57,028 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:57,028 INFO L185 Difference]: Start difference. First operand has 919 places, 765 transitions, 48319 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:00:57,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 921 places, 790 transitions, 50755 flow [2021-06-10 15:00:59,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 914 places, 790 transitions, 50013 flow, removed 24 selfloop flow, removed 7 redundant places. [2021-06-10 15:00:59,341 INFO L241 Difference]: Finished difference. Result has 916 places, 770 transitions, 48657 flow [2021-06-10 15:00:59,341 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47585, PETRI_DIFFERENCE_MINUEND_PLACES=907, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48657, PETRI_PLACES=916, PETRI_TRANSITIONS=770} [2021-06-10 15:00:59,341 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 872 predicate places. [2021-06-10 15:00:59,341 INFO L480 AbstractCegarLoop]: Abstraction has has 916 places, 770 transitions, 48657 flow [2021-06-10 15:00:59,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:59,341 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:00:59,342 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:00:59,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-06-10 15:00:59,342 INFO L428 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:00:59,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:00:59,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1611136969, now seen corresponding path program 268 times [2021-06-10 15:00:59,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:00:59,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544881357] [2021-06-10 15:00:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:00:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:00:59,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:59,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:00:59,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:59,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:00:59,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:59,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:00:59,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:00:59,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 15:00:59,369 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:00:59,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:00:59,384 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:00:59,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:00:59,403 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:00:59,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:00:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:00:59,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544881357] [2021-06-10 15:00:59,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:00:59,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:00:59,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805815739] [2021-06-10 15:00:59,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:00:59,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:00:59,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:00:59,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:00:59,421 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:00:59,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 916 places, 770 transitions, 48657 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:00:59,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:00:59,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:00:59,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:01,373 INFO L129 PetriNetUnfolder]: 11/4123 cut-off events. [2021-06-10 15:01:01,374 INFO L130 PetriNetUnfolder]: For 263436/263582 co-relation queries the response was YES. [2021-06-10 15:01:01,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36876 conditions, 4123 events. 11/4123 cut-off events. For 263436/263582 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 66526 event pairs, 3 based on Foata normal form. 8/4057 useless extension candidates. Maximal degree in co-relation 36678. Up to 603 conditions per place. [2021-06-10 15:01:01,416 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 439 selfloop transitions, 329 changer transitions 2/788 dead transitions. [2021-06-10 15:01:01,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 921 places, 788 transitions, 50684 flow [2021-06-10 15:01:01,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:01:01,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:01:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:01:01,417 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:01:01,418 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:01:01,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:01:01,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:01,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:01:01,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:01,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:01,418 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:01,418 INFO L185 Difference]: Start difference. First operand has 916 places, 770 transitions, 48657 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:01:01,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 921 places, 788 transitions, 50684 flow [2021-06-10 15:01:03,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 917 places, 788 transitions, 49881 flow, removed 49 selfloop flow, removed 4 redundant places. [2021-06-10 15:01:03,832 INFO L241 Difference]: Finished difference. Result has 918 places, 768 transitions, 48362 flow [2021-06-10 15:01:03,833 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47862, PETRI_DIFFERENCE_MINUEND_PLACES=910, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48362, PETRI_PLACES=918, PETRI_TRANSITIONS=768} [2021-06-10 15:01:03,833 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 874 predicate places. [2021-06-10 15:01:03,833 INFO L480 AbstractCegarLoop]: Abstraction has has 918 places, 768 transitions, 48362 flow [2021-06-10 15:01:03,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:03,833 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:03,833 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:03,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-06-10 15:01:03,833 INFO L428 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:01:03,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:03,833 INFO L82 PathProgramCache]: Analyzing trace with hash 462531347, now seen corresponding path program 269 times [2021-06-10 15:01:03,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:03,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096135652] [2021-06-10 15:01:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:03,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:03,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:03,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:03,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:03,844 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:01:03,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:01:03,858 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:01:03,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:01:03,876 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 15:01:03,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 15:01:03,901 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:01:03,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:01:03,919 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:01:03,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:01:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:03,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096135652] [2021-06-10 15:01:03,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:03,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:01:03,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185143602] [2021-06-10 15:01:03,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:01:03,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:03,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:01:03,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:01:03,938 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:01:03,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 768 transitions, 48362 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:03,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:03,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:01:03,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:05,931 INFO L129 PetriNetUnfolder]: 11/4111 cut-off events. [2021-06-10 15:01:05,932 INFO L130 PetriNetUnfolder]: For 259465/259828 co-relation queries the response was YES. [2021-06-10 15:01:05,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36665 conditions, 4111 events. 11/4111 cut-off events. For 259465/259828 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 66338 event pairs, 3 based on Foata normal form. 22/4052 useless extension candidates. Maximal degree in co-relation 36467. Up to 711 conditions per place. [2021-06-10 15:01:05,987 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 487 selfloop transitions, 313 changer transitions 2/820 dead transitions. [2021-06-10 15:01:05,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 923 places, 820 transitions, 52216 flow [2021-06-10 15:01:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:01:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:01:05,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:01:05,988 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:01:05,988 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:01:05,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:01:05,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:05,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:01:05,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:05,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:05,989 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:05,989 INFO L185 Difference]: Start difference. First operand has 918 places, 768 transitions, 48362 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:01:05,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 923 places, 820 transitions, 52216 flow [2021-06-10 15:01:08,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 918 places, 820 transitions, 51555 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 15:01:08,481 INFO L241 Difference]: Finished difference. Result has 922 places, 779 transitions, 49207 flow [2021-06-10 15:01:08,482 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47721, PETRI_DIFFERENCE_MINUEND_PLACES=911, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=49207, PETRI_PLACES=922, PETRI_TRANSITIONS=779} [2021-06-10 15:01:08,482 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 878 predicate places. [2021-06-10 15:01:08,482 INFO L480 AbstractCegarLoop]: Abstraction has has 922 places, 779 transitions, 49207 flow [2021-06-10 15:01:08,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:08,482 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:08,482 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:08,482 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-06-10 15:01:08,482 INFO L428 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:01:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:08,483 INFO L82 PathProgramCache]: Analyzing trace with hash -833789975, now seen corresponding path program 270 times [2021-06-10 15:01:08,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:08,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678506139] [2021-06-10 15:01:08,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:08,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:08,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:08,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:08,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:08,495 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:01:08,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:01:08,506 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:01:08,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:01:08,521 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:01:08,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:01:08,536 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:01:08,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:01:08,554 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:01:08,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:01:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:08,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678506139] [2021-06-10 15:01:08,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:08,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:01:08,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535008057] [2021-06-10 15:01:08,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:01:08,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:08,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:01:08,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:01:08,573 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:01:08,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 922 places, 779 transitions, 49207 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:08,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:08,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:01:08,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:10,618 INFO L129 PetriNetUnfolder]: 11/4101 cut-off events. [2021-06-10 15:01:10,618 INFO L130 PetriNetUnfolder]: For 264727/265094 co-relation queries the response was YES. [2021-06-10 15:01:10,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36695 conditions, 4101 events. 11/4101 cut-off events. For 264727/265094 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 66132 event pairs, 3 based on Foata normal form. 33/4060 useless extension candidates. Maximal degree in co-relation 36494. Up to 587 conditions per place. [2021-06-10 15:01:10,675 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 444 selfloop transitions, 329 changer transitions 2/793 dead transitions. [2021-06-10 15:01:10,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 928 places, 793 transitions, 51116 flow [2021-06-10 15:01:10,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:01:10,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:01:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:01:10,676 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:01:10,676 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:01:10,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:01:10,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:10,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:01:10,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:10,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:10,677 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:10,677 INFO L185 Difference]: Start difference. First operand has 922 places, 779 transitions, 49207 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:01:10,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 928 places, 793 transitions, 51116 flow [2021-06-10 15:01:13,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 923 places, 793 transitions, 50528 flow, removed 44 selfloop flow, removed 5 redundant places. [2021-06-10 15:01:13,490 INFO L241 Difference]: Finished difference. Result has 924 places, 777 transitions, 49156 flow [2021-06-10 15:01:13,491 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=48631, PETRI_DIFFERENCE_MINUEND_PLACES=916, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=49156, PETRI_PLACES=924, PETRI_TRANSITIONS=777} [2021-06-10 15:01:13,491 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 880 predicate places. [2021-06-10 15:01:13,491 INFO L480 AbstractCegarLoop]: Abstraction has has 924 places, 777 transitions, 49156 flow [2021-06-10 15:01:13,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:13,491 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:13,491 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:13,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-06-10 15:01:13,491 INFO L428 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:01:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:13,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1487925145, now seen corresponding path program 271 times [2021-06-10 15:01:13,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:13,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602798819] [2021-06-10 15:01:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:13,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:13,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:13,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:13,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:13,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:13,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:01:13,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:13,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 15:01:13,522 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:01:13,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:01:13,550 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:01:13,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:01:13,572 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:01:13,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:01:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:13,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602798819] [2021-06-10 15:01:13,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:13,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:01:13,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943607641] [2021-06-10 15:01:13,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:01:13,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:13,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:01:13,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:01:13,599 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:01:13,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 924 places, 777 transitions, 49156 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:13,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:13,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:01:13,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:15,655 INFO L129 PetriNetUnfolder]: 11/4085 cut-off events. [2021-06-10 15:01:15,655 INFO L130 PetriNetUnfolder]: For 261195/261562 co-relation queries the response was YES. [2021-06-10 15:01:15,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36622 conditions, 4085 events. 11/4085 cut-off events. For 261195/261562 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 65852 event pairs, 3 based on Foata normal form. 33/4037 useless extension candidates. Maximal degree in co-relation 36422. Up to 603 conditions per place. [2021-06-10 15:01:15,709 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 445 selfloop transitions, 326 changer transitions 2/791 dead transitions. [2021-06-10 15:01:15,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 929 places, 791 transitions, 51057 flow [2021-06-10 15:01:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:01:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:01:15,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:01:15,710 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:01:15,710 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:01:15,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:01:15,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:15,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:01:15,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:15,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:15,711 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:15,711 INFO L185 Difference]: Start difference. First operand has 924 places, 777 transitions, 49156 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:01:15,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 929 places, 791 transitions, 51057 flow [2021-06-10 15:01:18,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 925 places, 791 transitions, 50554 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-06-10 15:01:18,291 INFO L241 Difference]: Finished difference. Result has 926 places, 775 transitions, 49171 flow [2021-06-10 15:01:18,291 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=48661, PETRI_DIFFERENCE_MINUEND_PLACES=918, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=49171, PETRI_PLACES=926, PETRI_TRANSITIONS=775} [2021-06-10 15:01:18,291 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 882 predicate places. [2021-06-10 15:01:18,291 INFO L480 AbstractCegarLoop]: Abstraction has has 926 places, 775 transitions, 49171 flow [2021-06-10 15:01:18,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:18,291 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:18,291 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:18,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-06-10 15:01:18,292 INFO L428 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:01:18,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:18,292 INFO L82 PathProgramCache]: Analyzing trace with hash -937195039, now seen corresponding path program 272 times [2021-06-10 15:01:18,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:18,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994280932] [2021-06-10 15:01:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:18,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:18,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:18,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:18,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:18,310 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:01:18,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:01:18,324 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 15:01:18,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 15:01:18,335 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:01:18,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:01:18,358 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:01:18,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:01:18,378 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:01:18,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:01:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:18,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994280932] [2021-06-10 15:01:18,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:18,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:01:18,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254645098] [2021-06-10 15:01:18,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:01:18,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:18,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:01:18,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:01:18,397 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:01:18,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 926 places, 775 transitions, 49171 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:18,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:18,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:01:18,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:20,246 INFO L129 PetriNetUnfolder]: 11/4075 cut-off events. [2021-06-10 15:01:20,246 INFO L130 PetriNetUnfolder]: For 261357/261724 co-relation queries the response was YES. [2021-06-10 15:01:20,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36688 conditions, 4075 events. 11/4075 cut-off events. For 261357/261724 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 65619 event pairs, 3 based on Foata normal form. 39/4041 useless extension candidates. Maximal degree in co-relation 36488. Up to 587 conditions per place. [2021-06-10 15:01:20,303 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 440 selfloop transitions, 329 changer transitions 2/789 dead transitions. [2021-06-10 15:01:20,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 789 transitions, 51068 flow [2021-06-10 15:01:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:01:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:01:20,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:01:20,305 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:01:20,305 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:01:20,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:01:20,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:20,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:01:20,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:20,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:20,305 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:20,305 INFO L185 Difference]: Start difference. First operand has 926 places, 775 transitions, 49171 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:01:20,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 931 places, 789 transitions, 51068 flow [2021-06-10 15:01:22,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 789 transitions, 50478 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 15:01:23,011 INFO L241 Difference]: Finished difference. Result has 928 places, 773 transitions, 49076 flow [2021-06-10 15:01:23,011 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=48589, PETRI_DIFFERENCE_MINUEND_PLACES=920, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=49076, PETRI_PLACES=928, PETRI_TRANSITIONS=773} [2021-06-10 15:01:23,011 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 884 predicate places. [2021-06-10 15:01:23,012 INFO L480 AbstractCegarLoop]: Abstraction has has 928 places, 773 transitions, 49076 flow [2021-06-10 15:01:23,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:23,012 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:23,012 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:23,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-06-10 15:01:23,012 INFO L428 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:01:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:23,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1795721801, now seen corresponding path program 273 times [2021-06-10 15:01:23,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:23,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972589175] [2021-06-10 15:01:23,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:23,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:23,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:23,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:23,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:23,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:23,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:01:23,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:23,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 15:01:23,039 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:01:23,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:01:23,063 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:01:23,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:01:23,082 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:01:23,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:01:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:23,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972589175] [2021-06-10 15:01:23,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:23,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:01:23,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385332033] [2021-06-10 15:01:23,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:01:23,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:23,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:01:23,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:01:23,101 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:01:23,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 928 places, 773 transitions, 49076 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:23,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:23,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:01:23,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:25,065 INFO L129 PetriNetUnfolder]: 11/4067 cut-off events. [2021-06-10 15:01:25,066 INFO L130 PetriNetUnfolder]: For 259829/259975 co-relation queries the response was YES. [2021-06-10 15:01:25,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36659 conditions, 4067 events. 11/4067 cut-off events. For 259829/259975 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 65399 event pairs, 3 based on Foata normal form. 8/4003 useless extension candidates. Maximal degree in co-relation 36459. Up to 603 conditions per place. [2021-06-10 15:01:25,117 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 445 selfloop transitions, 320 changer transitions 3/786 dead transitions. [2021-06-10 15:01:25,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 933 places, 786 transitions, 50963 flow [2021-06-10 15:01:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:01:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:01:25,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 15:01:25,118 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 15:01:25,118 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 15:01:25,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 15:01:25,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:25,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 15:01:25,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:25,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:25,119 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:25,119 INFO L185 Difference]: Start difference. First operand has 928 places, 773 transitions, 49076 flow. Second operand 8 states and 466 transitions. [2021-06-10 15:01:25,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 933 places, 786 transitions, 50963 flow [2021-06-10 15:01:27,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 929 places, 786 transitions, 50349 flow, removed 20 selfloop flow, removed 4 redundant places. [2021-06-10 15:01:27,628 INFO L241 Difference]: Finished difference. Result has 930 places, 770 transitions, 48918 flow [2021-06-10 15:01:27,628 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=48468, PETRI_DIFFERENCE_MINUEND_PLACES=922, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48918, PETRI_PLACES=930, PETRI_TRANSITIONS=770} [2021-06-10 15:01:27,628 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 886 predicate places. [2021-06-10 15:01:27,628 INFO L480 AbstractCegarLoop]: Abstraction has has 930 places, 770 transitions, 48918 flow [2021-06-10 15:01:27,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:27,629 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:27,629 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:27,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-06-10 15:01:27,629 INFO L428 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:01:27,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:27,629 INFO L82 PathProgramCache]: Analyzing trace with hash 118186311, now seen corresponding path program 274 times [2021-06-10 15:01:27,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:27,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874203786] [2021-06-10 15:01:27,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:27,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:27,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:27,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:27,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:27,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:27,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:01:27,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:27,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 15:01:27,656 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:01:27,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:01:27,670 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:01:27,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:01:27,690 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:01:27,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:01:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:27,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874203786] [2021-06-10 15:01:27,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:27,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:01:27,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426825714] [2021-06-10 15:01:27,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:01:27,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:27,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:01:27,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:01:27,709 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:01:27,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 930 places, 770 transitions, 48918 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:27,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:27,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:01:27,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:29,702 INFO L129 PetriNetUnfolder]: 11/4055 cut-off events. [2021-06-10 15:01:29,702 INFO L130 PetriNetUnfolder]: For 259509/259876 co-relation queries the response was YES. [2021-06-10 15:01:29,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36579 conditions, 4055 events. 11/4055 cut-off events. For 259509/259876 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 65205 event pairs, 3 based on Foata normal form. 33/4008 useless extension candidates. Maximal degree in co-relation 36379. Up to 603 conditions per place. [2021-06-10 15:01:29,742 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 444 selfloop transitions, 320 changer transitions 2/784 dead transitions. [2021-06-10 15:01:29,742 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 932 places, 784 transitions, 50805 flow [2021-06-10 15:01:29,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:01:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:01:29,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:01:29,743 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:01:29,743 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:01:29,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:01:29,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:29,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:01:29,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:29,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:29,743 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:29,744 INFO L185 Difference]: Start difference. First operand has 930 places, 770 transitions, 48918 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:01:29,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 932 places, 784 transitions, 50805 flow [2021-06-10 15:01:32,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 784 transitions, 50105 flow, removed 23 selfloop flow, removed 6 redundant places. [2021-06-10 15:01:32,058 INFO L241 Difference]: Finished difference. Result has 927 places, 768 transitions, 48706 flow [2021-06-10 15:01:32,058 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=48226, PETRI_DIFFERENCE_MINUEND_PLACES=919, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48706, PETRI_PLACES=927, PETRI_TRANSITIONS=768} [2021-06-10 15:01:32,059 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 883 predicate places. [2021-06-10 15:01:32,059 INFO L480 AbstractCegarLoop]: Abstraction has has 927 places, 768 transitions, 48706 flow [2021-06-10 15:01:32,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:32,059 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:32,059 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:32,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-06-10 15:01:32,059 INFO L428 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:01:32,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:32,059 INFO L82 PathProgramCache]: Analyzing trace with hash 529835121, now seen corresponding path program 275 times [2021-06-10 15:01:32,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:32,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53339304] [2021-06-10 15:01:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:32,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:32,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:32,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:32,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:32,071 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:01:32,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:01:32,083 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:01:32,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:01:32,098 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:01:32,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:01:32,119 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:01:32,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:01:32,138 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:01:32,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:01:32,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:32,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53339304] [2021-06-10 15:01:32,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:32,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:01:32,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946378257] [2021-06-10 15:01:32,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:01:32,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:32,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:01:32,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:01:32,157 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:01:32,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 768 transitions, 48706 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:32,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:32,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:01:32,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:34,180 INFO L129 PetriNetUnfolder]: 11/4045 cut-off events. [2021-06-10 15:01:34,181 INFO L130 PetriNetUnfolder]: For 257532/257899 co-relation queries the response was YES. [2021-06-10 15:01:34,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36467 conditions, 4045 events. 11/4045 cut-off events. For 257532/257899 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 65050 event pairs, 3 based on Foata normal form. 33/4006 useless extension candidates. Maximal degree in co-relation 36268. Up to 584 conditions per place. [2021-06-10 15:01:34,221 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 441 selfloop transitions, 321 changer transitions 2/782 dead transitions. [2021-06-10 15:01:34,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 932 places, 782 transitions, 50589 flow [2021-06-10 15:01:34,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:01:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:01:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:01:34,222 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:01:34,222 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:01:34,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:01:34,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:34,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:01:34,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:34,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:34,222 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:34,223 INFO L185 Difference]: Start difference. First operand has 927 places, 768 transitions, 48706 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:01:34,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 932 places, 782 transitions, 50589 flow [2021-06-10 15:01:36,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 782 transitions, 49971 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 15:01:36,508 INFO L241 Difference]: Finished difference. Result has 929 places, 767 transitions, 48703 flow [2021-06-10 15:01:36,509 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=48096, PETRI_DIFFERENCE_MINUEND_PLACES=920, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48703, PETRI_PLACES=929, PETRI_TRANSITIONS=767} [2021-06-10 15:01:36,509 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 885 predicate places. [2021-06-10 15:01:36,509 INFO L480 AbstractCegarLoop]: Abstraction has has 929 places, 767 transitions, 48703 flow [2021-06-10 15:01:36,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:36,509 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:36,509 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:36,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-06-10 15:01:36,509 INFO L428 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:01:36,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:36,509 INFO L82 PathProgramCache]: Analyzing trace with hash 577744639, now seen corresponding path program 276 times [2021-06-10 15:01:36,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:36,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435646736] [2021-06-10 15:01:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:36,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:36,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:36,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:36,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:36,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:36,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:01:36,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:36,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 15:01:36,537 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:01:36,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:01:36,550 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:01:36,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:01:36,568 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:01:36,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:01:36,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:36,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435646736] [2021-06-10 15:01:36,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:36,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:01:36,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533465078] [2021-06-10 15:01:36,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:01:36,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:36,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:01:36,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:01:36,588 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:01:36,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 767 transitions, 48703 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:36,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:36,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:01:36,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:38,540 INFO L129 PetriNetUnfolder]: 11/4034 cut-off events. [2021-06-10 15:01:38,540 INFO L130 PetriNetUnfolder]: For 258009/258376 co-relation queries the response was YES. [2021-06-10 15:01:38,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36420 conditions, 4034 events. 11/4034 cut-off events. For 258009/258376 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 64814 event pairs, 3 based on Foata normal form. 33/3995 useless extension candidates. Maximal degree in co-relation 36220. Up to 603 conditions per place. [2021-06-10 15:01:38,584 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 441 selfloop transitions, 318 changer transitions 3/780 dead transitions. [2021-06-10 15:01:38,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 780 transitions, 50535 flow [2021-06-10 15:01:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:01:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:01:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:01:38,585 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:01:38,585 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:01:38,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:01:38,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:38,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:01:38,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:38,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:38,586 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:38,586 INFO L185 Difference]: Start difference. First operand has 929 places, 767 transitions, 48703 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:01:38,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 934 places, 780 transitions, 50535 flow [2021-06-10 15:01:40,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 930 places, 780 transitions, 49922 flow, removed 24 selfloop flow, removed 4 redundant places. [2021-06-10 15:01:40,946 INFO L241 Difference]: Finished difference. Result has 931 places, 764 transitions, 48518 flow [2021-06-10 15:01:40,946 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=48098, PETRI_DIFFERENCE_MINUEND_PLACES=923, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48518, PETRI_PLACES=931, PETRI_TRANSITIONS=764} [2021-06-10 15:01:40,946 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 887 predicate places. [2021-06-10 15:01:40,946 INFO L480 AbstractCegarLoop]: Abstraction has has 931 places, 764 transitions, 48518 flow [2021-06-10 15:01:40,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:40,946 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:40,946 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:40,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-06-10 15:01:40,947 INFO L428 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:01:40,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:40,947 INFO L82 PathProgramCache]: Analyzing trace with hash 753839717, now seen corresponding path program 277 times [2021-06-10 15:01:40,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:40,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573011549] [2021-06-10 15:01:40,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:40,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:40,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:40,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:40,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:40,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:40,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:01:40,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:40,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 15:01:40,977 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:01:40,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:01:40,991 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:01:40,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:01:41,010 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:01:41,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:01:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:41,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573011549] [2021-06-10 15:01:41,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:41,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:01:41,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169034244] [2021-06-10 15:01:41,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:01:41,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:41,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:01:41,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:01:41,030 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:01:41,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 764 transitions, 48518 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:41,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:41,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:01:41,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:42,970 INFO L129 PetriNetUnfolder]: 11/4022 cut-off events. [2021-06-10 15:01:42,971 INFO L130 PetriNetUnfolder]: For 255311/255457 co-relation queries the response was YES. [2021-06-10 15:01:43,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36325 conditions, 4022 events. 11/4022 cut-off events. For 255311/255457 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 64508 event pairs, 3 based on Foata normal form. 8/3958 useless extension candidates. Maximal degree in co-relation 36125. Up to 603 conditions per place. [2021-06-10 15:01:43,014 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 430 selfloop transitions, 326 changer transitions 3/777 dead transitions. [2021-06-10 15:01:43,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 777 transitions, 50344 flow [2021-06-10 15:01:43,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:01:43,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:01:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:01:43,015 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:01:43,015 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:01:43,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:01:43,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:43,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:01:43,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:43,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:43,015 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:43,016 INFO L185 Difference]: Start difference. First operand has 931 places, 764 transitions, 48518 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:01:43,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 777 transitions, 50344 flow [2021-06-10 15:01:45,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 932 places, 777 transitions, 49756 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 15:01:45,288 INFO L241 Difference]: Finished difference. Result has 933 places, 761 transitions, 48351 flow [2021-06-10 15:01:45,288 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47938, PETRI_DIFFERENCE_MINUEND_PLACES=925, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48351, PETRI_PLACES=933, PETRI_TRANSITIONS=761} [2021-06-10 15:01:45,289 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 889 predicate places. [2021-06-10 15:01:45,289 INFO L480 AbstractCegarLoop]: Abstraction has has 933 places, 761 transitions, 48351 flow [2021-06-10 15:01:45,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:45,289 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:45,289 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:45,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-06-10 15:01:45,289 INFO L428 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:01:45,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:45,289 INFO L82 PathProgramCache]: Analyzing trace with hash 704462907, now seen corresponding path program 278 times [2021-06-10 15:01:45,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:45,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025407441] [2021-06-10 15:01:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:45,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:45,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:45,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:45,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:45,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:45,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:01:45,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:45,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 15:01:45,317 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:01:45,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:01:45,330 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:01:45,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:01:45,349 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:01:45,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:01:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:45,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025407441] [2021-06-10 15:01:45,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:45,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:01:45,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830546515] [2021-06-10 15:01:45,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:01:45,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:45,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:01:45,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:01:45,368 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:01:45,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 761 transitions, 48351 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:45,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:45,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:01:45,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:47,285 INFO L129 PetriNetUnfolder]: 11/4010 cut-off events. [2021-06-10 15:01:47,285 INFO L130 PetriNetUnfolder]: For 255631/255997 co-relation queries the response was YES. [2021-06-10 15:01:47,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36238 conditions, 4010 events. 11/4010 cut-off events. For 255631/255997 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 64380 event pairs, 3 based on Foata normal form. 33/3963 useless extension candidates. Maximal degree in co-relation 36038. Up to 603 conditions per place. [2021-06-10 15:01:47,331 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 430 selfloop transitions, 324 changer transitions 2/774 dead transitions. [2021-06-10 15:01:47,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 938 places, 774 transitions, 50171 flow [2021-06-10 15:01:47,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:01:47,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:01:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:01:47,332 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:01:47,332 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:01:47,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:01:47,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:47,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:01:47,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:47,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:47,333 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:47,333 INFO L185 Difference]: Start difference. First operand has 933 places, 761 transitions, 48351 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:01:47,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 938 places, 774 transitions, 50171 flow [2021-06-10 15:01:49,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 932 places, 774 transitions, 49455 flow, removed 38 selfloop flow, removed 6 redundant places. [2021-06-10 15:01:49,742 INFO L241 Difference]: Finished difference. Result has 933 places, 759 transitions, 48134 flow [2021-06-10 15:01:49,743 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47647, PETRI_DIFFERENCE_MINUEND_PLACES=925, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48134, PETRI_PLACES=933, PETRI_TRANSITIONS=759} [2021-06-10 15:01:49,743 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 889 predicate places. [2021-06-10 15:01:49,743 INFO L480 AbstractCegarLoop]: Abstraction has has 933 places, 759 transitions, 48134 flow [2021-06-10 15:01:49,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:49,743 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:49,743 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:49,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-06-10 15:01:49,743 INFO L428 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:01:49,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:49,743 INFO L82 PathProgramCache]: Analyzing trace with hash 710727477, now seen corresponding path program 279 times [2021-06-10 15:01:49,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:49,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115218340] [2021-06-10 15:01:49,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:49,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:49,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:49,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:49,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:49,755 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:01:49,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:01:49,766 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:01:49,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:01:49,781 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:01:49,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:01:49,802 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:01:49,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:01:49,828 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:01:49,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:01:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:49,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115218340] [2021-06-10 15:01:49,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:49,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:01:49,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350204120] [2021-06-10 15:01:49,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:01:49,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:49,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:01:49,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:01:49,846 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:01:49,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 759 transitions, 48134 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:49,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:49,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:01:49,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:51,696 INFO L129 PetriNetUnfolder]: 11/4000 cut-off events. [2021-06-10 15:01:51,696 INFO L130 PetriNetUnfolder]: For 253293/253656 co-relation queries the response was YES. [2021-06-10 15:01:51,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36077 conditions, 4000 events. 11/4000 cut-off events. For 253293/253656 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 64139 event pairs, 3 based on Foata normal form. 33/3961 useless extension candidates. Maximal degree in co-relation 35878. Up to 582 conditions per place. [2021-06-10 15:01:51,744 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 440 selfloop transitions, 311 changer transitions 2/771 dead transitions. [2021-06-10 15:01:51,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 938 places, 771 transitions, 49940 flow [2021-06-10 15:01:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:01:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:01:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 15:01:51,745 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 15:01:51,745 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 15:01:51,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 15:01:51,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:51,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 15:01:51,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:51,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:51,745 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:51,745 INFO L185 Difference]: Start difference. First operand has 933 places, 759 transitions, 48134 flow. Second operand 8 states and 466 transitions. [2021-06-10 15:01:51,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 938 places, 771 transitions, 49940 flow [2021-06-10 15:01:54,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 933 places, 771 transitions, 49324 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-06-10 15:01:54,045 INFO L241 Difference]: Finished difference. Result has 934 places, 757 transitions, 48012 flow [2021-06-10 15:01:54,046 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47524, PETRI_DIFFERENCE_MINUEND_PLACES=926, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48012, PETRI_PLACES=934, PETRI_TRANSITIONS=757} [2021-06-10 15:01:54,046 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 890 predicate places. [2021-06-10 15:01:54,046 INFO L480 AbstractCegarLoop]: Abstraction has has 934 places, 757 transitions, 48012 flow [2021-06-10 15:01:54,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:54,046 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:54,046 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:54,046 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-06-10 15:01:54,046 INFO L428 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:01:54,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:54,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1482176015, now seen corresponding path program 280 times [2021-06-10 15:01:54,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:54,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942650006] [2021-06-10 15:01:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:54,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:54,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:54,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:54,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:54,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:54,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:01:54,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:54,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 15:01:54,073 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:01:54,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:01:54,087 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:01:54,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:01:54,105 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:01:54,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:01:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:54,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942650006] [2021-06-10 15:01:54,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:54,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:01:54,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89325166] [2021-06-10 15:01:54,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:01:54,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:54,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:01:54,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:01:54,124 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:01:54,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 934 places, 757 transitions, 48012 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:54,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:54,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:01:54,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:01:55,911 INFO L129 PetriNetUnfolder]: 11/3989 cut-off events. [2021-06-10 15:01:55,911 INFO L130 PetriNetUnfolder]: For 252544/252905 co-relation queries the response was YES. [2021-06-10 15:01:55,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36008 conditions, 3989 events. 11/3989 cut-off events. For 252544/252905 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 64027 event pairs, 3 based on Foata normal form. 33/3942 useless extension candidates. Maximal degree in co-relation 35809. Up to 602 conditions per place. [2021-06-10 15:01:55,956 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 427 selfloop transitions, 322 changer transitions 3/770 dead transitions. [2021-06-10 15:01:55,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 770 transitions, 49820 flow [2021-06-10 15:01:55,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:01:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:01:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:01:55,958 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:01:55,958 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:01:55,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:01:55,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:01:55,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:01:55,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:55,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:55,958 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:55,958 INFO L185 Difference]: Start difference. First operand has 934 places, 757 transitions, 48012 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:01:55,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 770 transitions, 49820 flow [2021-06-10 15:01:58,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 770 transitions, 49239 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-06-10 15:01:58,272 INFO L241 Difference]: Finished difference. Result has 932 places, 754 transitions, 47862 flow [2021-06-10 15:01:58,272 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47439, PETRI_DIFFERENCE_MINUEND_PLACES=924, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47862, PETRI_PLACES=932, PETRI_TRANSITIONS=754} [2021-06-10 15:01:58,272 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 888 predicate places. [2021-06-10 15:01:58,272 INFO L480 AbstractCegarLoop]: Abstraction has has 932 places, 754 transitions, 47862 flow [2021-06-10 15:01:58,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:58,273 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:01:58,273 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:01:58,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-06-10 15:01:58,273 INFO L428 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:01:58,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:01:58,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1980594919, now seen corresponding path program 281 times [2021-06-10 15:01:58,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:01:58,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395809665] [2021-06-10 15:01:58,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:01:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:01:58,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:58,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:01:58,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:01:58,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:01:58,285 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:01:58,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:01:58,296 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 15:01:58,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 15:01:58,306 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:01:58,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:01:58,320 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:01:58,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:01:58,339 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:01:58,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:01:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:01:58,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395809665] [2021-06-10 15:01:58,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:01:58,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:01:58,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541031361] [2021-06-10 15:01:58,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:01:58,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:01:58,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:01:58,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:01:58,358 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:01:58,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 932 places, 754 transitions, 47862 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:01:58,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:01:58,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:01:58,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:00,213 INFO L129 PetriNetUnfolder]: 11/3977 cut-off events. [2021-06-10 15:02:00,213 INFO L130 PetriNetUnfolder]: For 250587/250727 co-relation queries the response was YES. [2021-06-10 15:02:00,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35931 conditions, 3977 events. 11/3977 cut-off events. For 250587/250727 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 63665 event pairs, 3 based on Foata normal form. 8/3913 useless extension candidates. Maximal degree in co-relation 35733. Up to 581 conditions per place. [2021-06-10 15:02:00,253 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 428 selfloop transitions, 319 changer transitions 2/767 dead transitions. [2021-06-10 15:02:00,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 937 places, 767 transitions, 49664 flow [2021-06-10 15:02:00,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:02:00,254 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:02:00,254 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:02:00,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:02:00,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:00,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:02:00,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:00,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:00,255 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:00,255 INFO L185 Difference]: Start difference. First operand has 932 places, 754 transitions, 47862 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:02:00,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 937 places, 767 transitions, 49664 flow [2021-06-10 15:02:02,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 934 places, 767 transitions, 49345 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-06-10 15:02:02,456 INFO L241 Difference]: Finished difference. Result has 935 places, 752 transitions, 48005 flow [2021-06-10 15:02:02,457 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47551, PETRI_DIFFERENCE_MINUEND_PLACES=927, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48005, PETRI_PLACES=935, PETRI_TRANSITIONS=752} [2021-06-10 15:02:02,457 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 891 predicate places. [2021-06-10 15:02:02,457 INFO L480 AbstractCegarLoop]: Abstraction has has 935 places, 752 transitions, 48005 flow [2021-06-10 15:02:02,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:02,457 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:02,457 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:02,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-06-10 15:02:02,457 INFO L428 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:02,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:02,457 INFO L82 PathProgramCache]: Analyzing trace with hash -2026278095, now seen corresponding path program 282 times [2021-06-10 15:02:02,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:02,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118047519] [2021-06-10 15:02:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:02,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:02,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:02,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:02,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:02,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:02,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:02:02,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:02,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 15:02:02,483 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 15:02:02,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 15:02:02,507 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:02:02,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:02:02,525 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:02,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:02,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:02,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118047519] [2021-06-10 15:02:02,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:02,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:02,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091393450] [2021-06-10 15:02:02,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:02,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:02,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:02,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:02,544 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:02,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 935 places, 752 transitions, 48005 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:02,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:02,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:02,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:04,452 INFO L129 PetriNetUnfolder]: 11/3969 cut-off events. [2021-06-10 15:02:04,452 INFO L130 PetriNetUnfolder]: For 253424/253785 co-relation queries the response was YES. [2021-06-10 15:02:04,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36060 conditions, 3969 events. 11/3969 cut-off events. For 253424/253785 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 63542 event pairs, 3 based on Foata normal form. 33/3931 useless extension candidates. Maximal degree in co-relation 35862. Up to 602 conditions per place. [2021-06-10 15:02:04,490 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 426 selfloop transitions, 319 changer transitions 2/765 dead transitions. [2021-06-10 15:02:04,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 937 places, 765 transitions, 49803 flow [2021-06-10 15:02:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:04,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:02:04,491 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:02:04,491 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:02:04,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:02:04,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:04,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:02:04,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:04,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:04,491 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:04,491 INFO L185 Difference]: Start difference. First operand has 935 places, 752 transitions, 48005 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:02:04,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 937 places, 765 transitions, 49803 flow [2021-06-10 15:02:06,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 932 places, 765 transitions, 49168 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 15:02:06,721 INFO L241 Difference]: Finished difference. Result has 933 places, 750 transitions, 47852 flow [2021-06-10 15:02:06,721 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47378, PETRI_DIFFERENCE_MINUEND_PLACES=925, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47852, PETRI_PLACES=933, PETRI_TRANSITIONS=750} [2021-06-10 15:02:06,722 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 889 predicate places. [2021-06-10 15:02:06,722 INFO L480 AbstractCegarLoop]: Abstraction has has 933 places, 750 transitions, 47852 flow [2021-06-10 15:02:06,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:06,722 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:06,722 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:06,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-06-10 15:02:06,722 INFO L428 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:06,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:06,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2103470723, now seen corresponding path program 283 times [2021-06-10 15:02:06,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:06,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955815518] [2021-06-10 15:02:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:06,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:06,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:06,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:06,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:06,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:06,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:02:06,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:06,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 15:02:06,749 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 15:02:06,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 15:02:06,773 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:02:06,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:02:06,792 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:06,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:06,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955815518] [2021-06-10 15:02:06,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:06,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:06,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798208094] [2021-06-10 15:02:06,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:06,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:06,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:06,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:06,812 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:06,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 750 transitions, 47852 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:06,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:06,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:06,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:08,650 INFO L129 PetriNetUnfolder]: 11/3959 cut-off events. [2021-06-10 15:02:08,650 INFO L130 PetriNetUnfolder]: For 252686/253050 co-relation queries the response was YES. [2021-06-10 15:02:08,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35959 conditions, 3959 events. 11/3959 cut-off events. For 252686/253050 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 63357 event pairs, 3 based on Foata normal form. 33/3921 useless extension candidates. Maximal degree in co-relation 35761. Up to 602 conditions per place. [2021-06-10 15:02:08,705 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 425 selfloop transitions, 316 changer transitions 4/763 dead transitions. [2021-06-10 15:02:08,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 938 places, 763 transitions, 49646 flow [2021-06-10 15:02:08,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:08,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:02:08,706 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:02:08,706 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:02:08,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:02:08,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:08,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:02:08,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:08,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:08,707 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:08,707 INFO L185 Difference]: Start difference. First operand has 933 places, 750 transitions, 47852 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:02:08,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 938 places, 763 transitions, 49646 flow [2021-06-10 15:02:10,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 934 places, 763 transitions, 49056 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-06-10 15:02:10,960 INFO L241 Difference]: Finished difference. Result has 935 places, 746 transitions, 47658 flow [2021-06-10 15:02:10,961 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47270, PETRI_DIFFERENCE_MINUEND_PLACES=927, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47658, PETRI_PLACES=935, PETRI_TRANSITIONS=746} [2021-06-10 15:02:10,961 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 891 predicate places. [2021-06-10 15:02:10,961 INFO L480 AbstractCegarLoop]: Abstraction has has 935 places, 746 transitions, 47658 flow [2021-06-10 15:02:10,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:10,961 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:10,961 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:10,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-06-10 15:02:10,961 INFO L428 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:10,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:10,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1244417813, now seen corresponding path program 284 times [2021-06-10 15:02:10,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:10,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887262430] [2021-06-10 15:02:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:10,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:10,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:10,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:10,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:10,973 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:10,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:10,984 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:02:10,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:02:11,000 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:02:11,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:02:11,022 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:02:11,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:02:11,041 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:11,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:11,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887262430] [2021-06-10 15:02:11,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:11,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:11,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772579430] [2021-06-10 15:02:11,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:11,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:11,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:11,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:11,059 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:11,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 935 places, 746 transitions, 47658 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:11,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:11,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:11,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:12,839 INFO L129 PetriNetUnfolder]: 11/3940 cut-off events. [2021-06-10 15:02:12,839 INFO L130 PetriNetUnfolder]: For 251101/251330 co-relation queries the response was YES. [2021-06-10 15:02:12,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35814 conditions, 3940 events. 11/3940 cut-off events. For 251101/251330 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 62999 event pairs, 3 based on Foata normal form. 23/3884 useless extension candidates. Maximal degree in co-relation 35616. Up to 576 conditions per place. [2021-06-10 15:02:12,881 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 435 selfloop transitions, 304 changer transitions 2/759 dead transitions. [2021-06-10 15:02:12,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 759 transitions, 49444 flow [2021-06-10 15:02:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:02:12,882 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:02:12,882 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:02:12,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:02:12,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:12,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:02:12,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:12,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:12,883 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:12,883 INFO L185 Difference]: Start difference. First operand has 935 places, 746 transitions, 47658 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:02:12,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 759 transitions, 49444 flow [2021-06-10 15:02:15,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 934 places, 759 transitions, 48785 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-10 15:02:15,026 INFO L241 Difference]: Finished difference. Result has 936 places, 745 transitions, 47565 flow [2021-06-10 15:02:15,027 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47007, PETRI_DIFFERENCE_MINUEND_PLACES=927, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47565, PETRI_PLACES=936, PETRI_TRANSITIONS=745} [2021-06-10 15:02:15,027 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 892 predicate places. [2021-06-10 15:02:15,027 INFO L480 AbstractCegarLoop]: Abstraction has has 936 places, 745 transitions, 47565 flow [2021-06-10 15:02:15,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:15,027 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:15,027 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:15,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-06-10 15:02:15,027 INFO L428 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:15,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:15,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1122664105, now seen corresponding path program 285 times [2021-06-10 15:02:15,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:15,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310673165] [2021-06-10 15:02:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:15,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:15,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:15,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:15,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:15,039 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:15,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:15,050 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:02:15,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:02:15,066 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:02:15,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:02:15,088 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:02:15,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:02:15,106 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:15,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:15,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310673165] [2021-06-10 15:02:15,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:15,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:15,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970695469] [2021-06-10 15:02:15,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:15,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:15,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:15,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:15,125 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:15,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 936 places, 745 transitions, 47565 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:15,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:15,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:15,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:16,925 INFO L129 PetriNetUnfolder]: 11/3929 cut-off events. [2021-06-10 15:02:16,925 INFO L130 PetriNetUnfolder]: For 250628/250714 co-relation queries the response was YES. [2021-06-10 15:02:16,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35698 conditions, 3929 events. 11/3929 cut-off events. For 250628/250714 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 62767 event pairs, 3 based on Foata normal form. 6/3864 useless extension candidates. Maximal degree in co-relation 35499. Up to 576 conditions per place. [2021-06-10 15:02:16,967 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 432 selfloop transitions, 304 changer transitions 3/757 dead transitions. [2021-06-10 15:02:16,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 941 places, 757 transitions, 49309 flow [2021-06-10 15:02:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 15:02:16,968 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 15:02:16,968 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 15:02:16,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 15:02:16,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:16,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 15:02:16,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:16,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:16,969 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:16,969 INFO L185 Difference]: Start difference. First operand has 936 places, 745 transitions, 47565 flow. Second operand 8 states and 466 transitions. [2021-06-10 15:02:16,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 941 places, 757 transitions, 49309 flow [2021-06-10 15:02:19,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 936 places, 757 transitions, 48717 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-06-10 15:02:19,180 INFO L241 Difference]: Finished difference. Result has 937 places, 742 transitions, 47387 flow [2021-06-10 15:02:19,180 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46981, PETRI_DIFFERENCE_MINUEND_PLACES=929, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47387, PETRI_PLACES=937, PETRI_TRANSITIONS=742} [2021-06-10 15:02:19,180 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 893 predicate places. [2021-06-10 15:02:19,180 INFO L480 AbstractCegarLoop]: Abstraction has has 937 places, 742 transitions, 47387 flow [2021-06-10 15:02:19,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:19,181 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:19,181 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:19,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-06-10 15:02:19,181 INFO L428 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:19,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:19,181 INFO L82 PathProgramCache]: Analyzing trace with hash 981666873, now seen corresponding path program 286 times [2021-06-10 15:02:19,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:19,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148245038] [2021-06-10 15:02:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:19,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:19,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:19,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:19,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:19,192 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:19,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:19,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:02:19,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:02:19,219 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:02:19,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:02:19,241 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:02:19,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:02:19,260 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:19,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:19,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148245038] [2021-06-10 15:02:19,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:19,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:19,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185700523] [2021-06-10 15:02:19,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:19,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:19,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:19,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:19,278 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:19,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 937 places, 742 transitions, 47387 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:19,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:19,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:19,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:21,050 INFO L129 PetriNetUnfolder]: 11/3912 cut-off events. [2021-06-10 15:02:21,050 INFO L130 PetriNetUnfolder]: For 250075/250304 co-relation queries the response was YES. [2021-06-10 15:02:21,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35543 conditions, 3912 events. 11/3912 cut-off events. For 250075/250304 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 62496 event pairs, 3 based on Foata normal form. 23/3856 useless extension candidates. Maximal degree in co-relation 35344. Up to 576 conditions per place. [2021-06-10 15:02:21,091 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 433 selfloop transitions, 301 changer transitions 2/754 dead transitions. [2021-06-10 15:02:21,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 939 places, 754 transitions, 49125 flow [2021-06-10 15:02:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:02:21,092 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:02:21,092 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:02:21,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:02:21,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:21,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:02:21,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:21,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:21,093 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:21,093 INFO L185 Difference]: Start difference. First operand has 937 places, 742 transitions, 47387 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:02:21,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 939 places, 754 transitions, 49125 flow [2021-06-10 15:02:23,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 932 places, 754 transitions, 48442 flow, removed 22 selfloop flow, removed 7 redundant places. [2021-06-10 15:02:23,228 INFO L241 Difference]: Finished difference. Result has 935 places, 744 transitions, 47505 flow [2021-06-10 15:02:23,228 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46714, PETRI_DIFFERENCE_MINUEND_PLACES=925, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47505, PETRI_PLACES=935, PETRI_TRANSITIONS=744} [2021-06-10 15:02:23,228 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 891 predicate places. [2021-06-10 15:02:23,228 INFO L480 AbstractCegarLoop]: Abstraction has has 935 places, 744 transitions, 47505 flow [2021-06-10 15:02:23,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:23,229 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:23,229 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:23,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-06-10 15:02:23,229 INFO L428 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:23,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:23,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1030910975, now seen corresponding path program 287 times [2021-06-10 15:02:23,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:23,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333361669] [2021-06-10 15:02:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:23,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:23,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:23,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:23,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:23,240 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:23,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:23,251 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 15:02:23,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 15:02:23,261 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:02:23,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:02:23,275 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:02:23,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:02:23,293 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:23,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:23,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333361669] [2021-06-10 15:02:23,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:23,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:23,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208022631] [2021-06-10 15:02:23,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:23,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:23,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:23,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:23,312 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:23,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 935 places, 744 transitions, 47505 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:23,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:23,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:23,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:25,066 INFO L129 PetriNetUnfolder]: 11/3901 cut-off events. [2021-06-10 15:02:25,066 INFO L130 PetriNetUnfolder]: For 252379/252618 co-relation queries the response was YES. [2021-06-10 15:02:25,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35526 conditions, 3901 events. 11/3901 cut-off events. For 252379/252618 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 62287 event pairs, 3 based on Foata normal form. 35/3857 useless extension candidates. Maximal degree in co-relation 35327. Up to 576 conditions per place. [2021-06-10 15:02:25,116 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 416 selfloop transitions, 316 changer transitions 2/752 dead transitions. [2021-06-10 15:02:25,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 752 transitions, 49080 flow [2021-06-10 15:02:25,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:02:25,117 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:02:25,117 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:02:25,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:02:25,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:25,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:02:25,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:25,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:25,118 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:25,118 INFO L185 Difference]: Start difference. First operand has 935 places, 744 transitions, 47505 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:02:25,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 752 transitions, 49080 flow [2021-06-10 15:02:27,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 935 places, 752 transitions, 48592 flow, removed 23 selfloop flow, removed 5 redundant places. [2021-06-10 15:02:27,243 INFO L241 Difference]: Finished difference. Result has 936 places, 742 transitions, 47457 flow [2021-06-10 15:02:27,244 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47025, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47457, PETRI_PLACES=936, PETRI_TRANSITIONS=742} [2021-06-10 15:02:27,244 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 892 predicate places. [2021-06-10 15:02:27,244 INFO L480 AbstractCegarLoop]: Abstraction has has 936 places, 742 transitions, 47457 flow [2021-06-10 15:02:27,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:27,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:27,244 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:27,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-06-10 15:02:27,244 INFO L428 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:27,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:27,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1108089271, now seen corresponding path program 288 times [2021-06-10 15:02:27,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:27,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958121386] [2021-06-10 15:02:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:27,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:27,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:27,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:27,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:27,255 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:27,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:27,266 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 15:02:27,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 15:02:27,277 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:02:27,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:02:27,290 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:02:27,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:02:27,308 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:27,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:27,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958121386] [2021-06-10 15:02:27,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:27,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:27,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398326691] [2021-06-10 15:02:27,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:27,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:27,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:27,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:27,327 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:27,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 936 places, 742 transitions, 47457 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:27,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:27,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:27,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:29,143 INFO L129 PetriNetUnfolder]: 11/3893 cut-off events. [2021-06-10 15:02:29,144 INFO L130 PetriNetUnfolder]: For 251745/251984 co-relation queries the response was YES. [2021-06-10 15:02:29,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35525 conditions, 3893 events. 11/3893 cut-off events. For 251745/251984 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 62095 event pairs, 3 based on Foata normal form. 35/3850 useless extension candidates. Maximal degree in co-relation 35327. Up to 576 conditions per place. [2021-06-10 15:02:29,193 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 415 selfloop transitions, 314 changer transitions 3/750 dead transitions. [2021-06-10 15:02:29,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 938 places, 750 transitions, 49028 flow [2021-06-10 15:02:29,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:02:29,194 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:02:29,194 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:02:29,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:02:29,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:29,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:02:29,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:29,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:29,195 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:29,195 INFO L185 Difference]: Start difference. First operand has 936 places, 742 transitions, 47457 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:02:29,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 938 places, 750 transitions, 49028 flow [2021-06-10 15:02:31,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 932 places, 750 transitions, 48354 flow, removed 22 selfloop flow, removed 6 redundant places. [2021-06-10 15:02:31,230 INFO L241 Difference]: Finished difference. Result has 933 places, 739 transitions, 47183 flow [2021-06-10 15:02:31,231 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46791, PETRI_DIFFERENCE_MINUEND_PLACES=925, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47183, PETRI_PLACES=933, PETRI_TRANSITIONS=739} [2021-06-10 15:02:31,231 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 889 predicate places. [2021-06-10 15:02:31,231 INFO L480 AbstractCegarLoop]: Abstraction has has 933 places, 739 transitions, 47183 flow [2021-06-10 15:02:31,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:31,231 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:31,231 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:31,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-06-10 15:02:31,231 INFO L428 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:31,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:31,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1470685397, now seen corresponding path program 289 times [2021-06-10 15:02:31,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:31,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635540021] [2021-06-10 15:02:31,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:31,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:31,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:31,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:31,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:31,243 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:31,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:31,254 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:02:31,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:02:31,270 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:02:31,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:02:31,284 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:02:31,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:02:31,303 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:31,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:31,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635540021] [2021-06-10 15:02:31,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:31,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:31,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668435588] [2021-06-10 15:02:31,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:31,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:31,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:31,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:31,321 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:31,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 739 transitions, 47183 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:31,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:31,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:31,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:33,171 INFO L129 PetriNetUnfolder]: 11/3876 cut-off events. [2021-06-10 15:02:33,172 INFO L130 PetriNetUnfolder]: For 247747/247874 co-relation queries the response was YES. [2021-06-10 15:02:33,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35346 conditions, 3876 events. 11/3876 cut-off events. For 247747/247874 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 61823 event pairs, 3 based on Foata normal form. 21/3819 useless extension candidates. Maximal degree in co-relation 35150. Up to 576 conditions per place. [2021-06-10 15:02:33,205 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 420 selfloop transitions, 307 changer transitions 2/747 dead transitions. [2021-06-10 15:02:33,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 935 places, 747 transitions, 48748 flow [2021-06-10 15:02:33,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:33,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:33,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:02:33,206 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:02:33,206 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:02:33,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:02:33,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:33,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:02:33,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:33,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:33,207 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:33,207 INFO L185 Difference]: Start difference. First operand has 933 places, 739 transitions, 47183 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:02:33,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 935 places, 747 transitions, 48748 flow [2021-06-10 15:02:35,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 929 places, 747 transitions, 48067 flow, removed 13 selfloop flow, removed 6 redundant places. [2021-06-10 15:02:35,431 INFO L241 Difference]: Finished difference. Result has 930 places, 737 transitions, 46958 flow [2021-06-10 15:02:35,431 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46510, PETRI_DIFFERENCE_MINUEND_PLACES=922, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46958, PETRI_PLACES=930, PETRI_TRANSITIONS=737} [2021-06-10 15:02:35,431 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 886 predicate places. [2021-06-10 15:02:35,431 INFO L480 AbstractCegarLoop]: Abstraction has has 930 places, 737 transitions, 46958 flow [2021-06-10 15:02:35,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:35,432 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:35,432 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:35,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-06-10 15:02:35,432 INFO L428 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:35,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:35,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1089858917, now seen corresponding path program 290 times [2021-06-10 15:02:35,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:35,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306633660] [2021-06-10 15:02:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:35,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:35,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:35,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:35,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:35,443 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:35,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:35,454 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:02:35,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:02:35,472 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:02:35,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:02:35,496 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:02:35,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:02:35,515 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:35,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:35,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306633660] [2021-06-10 15:02:35,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:35,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:35,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428315782] [2021-06-10 15:02:35,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:35,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:35,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:35,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:35,533 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:35,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 930 places, 737 transitions, 46958 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:35,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:35,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:35,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:37,369 INFO L129 PetriNetUnfolder]: 11/3868 cut-off events. [2021-06-10 15:02:37,369 INFO L130 PetriNetUnfolder]: For 246143/246229 co-relation queries the response was YES. [2021-06-10 15:02:37,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35199 conditions, 3868 events. 11/3868 cut-off events. For 246143/246229 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 61604 event pairs, 3 based on Foata normal form. 6/3805 useless extension candidates. Maximal degree in co-relation 35003. Up to 576 conditions per place. [2021-06-10 15:02:37,410 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 426 selfloop transitions, 299 changer transitions 2/745 dead transitions. [2021-06-10 15:02:37,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 935 places, 745 transitions, 48519 flow [2021-06-10 15:02:37,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:02:37,411 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:02:37,411 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:02:37,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:02:37,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:37,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:02:37,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:37,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:37,412 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:37,412 INFO L185 Difference]: Start difference. First operand has 930 places, 737 transitions, 46958 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:02:37,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 935 places, 745 transitions, 48519 flow [2021-06-10 15:02:39,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 932 places, 745 transitions, 48096 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-06-10 15:02:39,656 INFO L241 Difference]: Finished difference. Result has 933 places, 735 transitions, 46977 flow [2021-06-10 15:02:39,657 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46543, PETRI_DIFFERENCE_MINUEND_PLACES=925, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46977, PETRI_PLACES=933, PETRI_TRANSITIONS=735} [2021-06-10 15:02:39,657 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 889 predicate places. [2021-06-10 15:02:39,657 INFO L480 AbstractCegarLoop]: Abstraction has has 933 places, 735 transitions, 46977 flow [2021-06-10 15:02:39,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:39,657 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:39,657 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:39,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-06-10 15:02:39,657 INFO L428 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:39,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:39,658 INFO L82 PathProgramCache]: Analyzing trace with hash 796832705, now seen corresponding path program 291 times [2021-06-10 15:02:39,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:39,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258612857] [2021-06-10 15:02:39,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:39,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:39,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:39,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:39,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:39,669 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:39,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:39,681 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:02:39,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:02:39,697 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:02:39,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:02:39,711 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:02:39,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:02:39,729 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:39,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:39,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258612857] [2021-06-10 15:02:39,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:39,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:39,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129485049] [2021-06-10 15:02:39,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:39,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:39,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:39,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:39,747 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:39,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 735 transitions, 46977 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:39,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:39,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:39,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:41,519 INFO L129 PetriNetUnfolder]: 11/3857 cut-off events. [2021-06-10 15:02:41,520 INFO L130 PetriNetUnfolder]: For 246637/246764 co-relation queries the response was YES. [2021-06-10 15:02:41,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35278 conditions, 3857 events. 11/3857 cut-off events. For 246637/246764 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 61398 event pairs, 3 based on Foata normal form. 21/3801 useless extension candidates. Maximal degree in co-relation 35082. Up to 576 conditions per place. [2021-06-10 15:02:41,561 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 418 selfloop transitions, 304 changer transitions 3/743 dead transitions. [2021-06-10 15:02:41,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 938 places, 743 transitions, 48534 flow [2021-06-10 15:02:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:41,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:02:41,562 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:02:41,562 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:02:41,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:02:41,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:41,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:02:41,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:41,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:41,563 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:41,563 INFO L185 Difference]: Start difference. First operand has 933 places, 735 transitions, 46977 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:02:41,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 938 places, 743 transitions, 48534 flow [2021-06-10 15:02:43,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 933 places, 743 transitions, 47940 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 15:02:43,951 INFO L241 Difference]: Finished difference. Result has 934 places, 732 transitions, 46773 flow [2021-06-10 15:02:43,952 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46391, PETRI_DIFFERENCE_MINUEND_PLACES=926, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46773, PETRI_PLACES=934, PETRI_TRANSITIONS=732} [2021-06-10 15:02:43,952 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 890 predicate places. [2021-06-10 15:02:43,952 INFO L480 AbstractCegarLoop]: Abstraction has has 934 places, 732 transitions, 46773 flow [2021-06-10 15:02:43,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:43,952 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:43,952 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:43,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-06-10 15:02:43,952 INFO L428 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:43,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:43,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1441656489, now seen corresponding path program 292 times [2021-06-10 15:02:43,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:43,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262277044] [2021-06-10 15:02:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:43,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:43,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:43,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:43,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:43,964 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:43,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:43,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:02:43,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:02:43,992 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:02:43,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:02:44,013 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:02:44,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:02:44,032 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:44,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:44,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262277044] [2021-06-10 15:02:44,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:44,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:44,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686984652] [2021-06-10 15:02:44,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:44,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:44,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:44,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:44,051 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:44,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 934 places, 732 transitions, 46773 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:44,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:44,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:44,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:45,855 INFO L129 PetriNetUnfolder]: 11/3844 cut-off events. [2021-06-10 15:02:45,855 INFO L130 PetriNetUnfolder]: For 245728/245855 co-relation queries the response was YES. [2021-06-10 15:02:45,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35169 conditions, 3844 events. 11/3844 cut-off events. For 245728/245855 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 61180 event pairs, 3 based on Foata normal form. 21/3788 useless extension candidates. Maximal degree in co-relation 34973. Up to 576 conditions per place. [2021-06-10 15:02:45,899 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 425 selfloop transitions, 295 changer transitions 2/740 dead transitions. [2021-06-10 15:02:45,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 740 transitions, 48324 flow [2021-06-10 15:02:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:02:45,900 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:02:45,900 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:02:45,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:02:45,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:45,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:02:45,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:45,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:45,901 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:45,901 INFO L185 Difference]: Start difference. First operand has 934 places, 732 transitions, 46773 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:02:45,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 740 transitions, 48324 flow [2021-06-10 15:02:48,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 740 transitions, 47726 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 15:02:48,241 INFO L241 Difference]: Finished difference. Result has 932 places, 730 transitions, 46632 flow [2021-06-10 15:02:48,242 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46183, PETRI_DIFFERENCE_MINUEND_PLACES=924, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46632, PETRI_PLACES=932, PETRI_TRANSITIONS=730} [2021-06-10 15:02:48,242 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 888 predicate places. [2021-06-10 15:02:48,242 INFO L480 AbstractCegarLoop]: Abstraction has has 932 places, 730 transitions, 46632 flow [2021-06-10 15:02:48,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:48,242 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:48,242 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:48,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-06-10 15:02:48,242 INFO L428 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:48,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:48,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1980543161, now seen corresponding path program 293 times [2021-06-10 15:02:48,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:48,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166769014] [2021-06-10 15:02:48,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:48,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:48,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:48,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:48,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:48,254 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:48,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:48,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:02:48,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:02:48,282 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:02:48,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:02:48,302 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:02:48,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:02:48,321 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:48,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:48,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166769014] [2021-06-10 15:02:48,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:48,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:48,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489276204] [2021-06-10 15:02:48,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:48,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:48,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:48,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:48,339 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:48,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 932 places, 730 transitions, 46632 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:48,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:48,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:48,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:50,013 INFO L129 PetriNetUnfolder]: 11/3833 cut-off events. [2021-06-10 15:02:50,013 INFO L130 PetriNetUnfolder]: For 244964/245091 co-relation queries the response was YES. [2021-06-10 15:02:50,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35085 conditions, 3833 events. 11/3833 cut-off events. For 244964/245091 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 60939 event pairs, 3 based on Foata normal form. 21/3777 useless extension candidates. Maximal degree in co-relation 34889. Up to 576 conditions per place. [2021-06-10 15:02:50,053 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 422 selfloop transitions, 295 changer transitions 3/738 dead transitions. [2021-06-10 15:02:50,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 937 places, 738 transitions, 48179 flow [2021-06-10 15:02:50,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:50,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 15:02:50,054 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 15:02:50,054 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 15:02:50,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 15:02:50,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:50,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 15:02:50,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:50,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:50,055 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:50,055 INFO L185 Difference]: Start difference. First operand has 932 places, 730 transitions, 46632 flow. Second operand 8 states and 466 transitions. [2021-06-10 15:02:50,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 937 places, 738 transitions, 48179 flow [2021-06-10 15:02:52,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 932 places, 738 transitions, 47593 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-06-10 15:02:52,327 INFO L241 Difference]: Finished difference. Result has 933 places, 727 transitions, 46431 flow [2021-06-10 15:02:52,327 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46054, PETRI_DIFFERENCE_MINUEND_PLACES=925, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46431, PETRI_PLACES=933, PETRI_TRANSITIONS=727} [2021-06-10 15:02:52,327 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 889 predicate places. [2021-06-10 15:02:52,327 INFO L480 AbstractCegarLoop]: Abstraction has has 933 places, 727 transitions, 46431 flow [2021-06-10 15:02:52,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:52,327 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:52,327 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:52,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-06-10 15:02:52,328 INFO L428 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:52,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:52,328 INFO L82 PathProgramCache]: Analyzing trace with hash -413336713, now seen corresponding path program 294 times [2021-06-10 15:02:52,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:52,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756524267] [2021-06-10 15:02:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:52,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:52,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:52,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:52,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:52,339 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:52,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:52,350 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:02:52,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:02:52,367 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:02:52,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:02:52,389 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:02:52,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:02:52,408 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:52,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:52,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:52,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756524267] [2021-06-10 15:02:52,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:52,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:52,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922434774] [2021-06-10 15:02:52,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:52,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:52,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:52,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:52,427 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:52,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 727 transitions, 46431 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:52,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:52,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:52,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:54,213 INFO L129 PetriNetUnfolder]: 11/3820 cut-off events. [2021-06-10 15:02:54,214 INFO L130 PetriNetUnfolder]: For 243473/243559 co-relation queries the response was YES. [2021-06-10 15:02:54,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34983 conditions, 3820 events. 11/3820 cut-off events. For 243473/243559 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 60745 event pairs, 3 based on Foata normal form. 6/3757 useless extension candidates. Maximal degree in co-relation 34787. Up to 576 conditions per place. [2021-06-10 15:02:54,254 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 414 selfloop transitions, 301 changer transitions 2/735 dead transitions. [2021-06-10 15:02:54,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 935 places, 735 transitions, 47972 flow [2021-06-10 15:02:54,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:54,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:02:54,256 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:02:54,256 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:02:54,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:02:54,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:54,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:02:54,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:54,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:54,256 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:54,256 INFO L185 Difference]: Start difference. First operand has 933 places, 727 transitions, 46431 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:02:54,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 935 places, 735 transitions, 47972 flow [2021-06-10 15:02:56,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 735 transitions, 47189 flow, removed 18 selfloop flow, removed 8 redundant places. [2021-06-10 15:02:56,455 INFO L241 Difference]: Finished difference. Result has 929 places, 726 transitions, 46267 flow [2021-06-10 15:02:56,455 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=45656, PETRI_DIFFERENCE_MINUEND_PLACES=920, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46267, PETRI_PLACES=929, PETRI_TRANSITIONS=726} [2021-06-10 15:02:56,456 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 885 predicate places. [2021-06-10 15:02:56,456 INFO L480 AbstractCegarLoop]: Abstraction has has 929 places, 726 transitions, 46267 flow [2021-06-10 15:02:56,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:56,456 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:02:56,456 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:02:56,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-06-10 15:02:56,457 INFO L428 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:02:56,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:02:56,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1413515523, now seen corresponding path program 295 times [2021-06-10 15:02:56,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:02:56,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476196727] [2021-06-10 15:02:56,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:02:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:02:56,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:56,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:02:56,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:02:56,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:02:56,468 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:02:56,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:02:56,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:02:56,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:02:56,495 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:02:56,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:02:56,516 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:02:56,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:02:56,535 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:02:56,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:02:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:02:56,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476196727] [2021-06-10 15:02:56,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:02:56,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:02:56,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607848512] [2021-06-10 15:02:56,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:02:56,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:02:56,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:02:56,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:02:56,554 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:02:56,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 726 transitions, 46267 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:56,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:02:56,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:02:56,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:02:58,495 INFO L129 PetriNetUnfolder]: 11/3809 cut-off events. [2021-06-10 15:02:58,495 INFO L130 PetriNetUnfolder]: For 244739/244892 co-relation queries the response was YES. [2021-06-10 15:02:58,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34807 conditions, 3809 events. 11/3809 cut-off events. For 244739/244892 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 60498 event pairs, 3 based on Foata normal form. 24/3756 useless extension candidates. Maximal degree in co-relation 34612. Up to 576 conditions per place. [2021-06-10 15:02:58,529 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 407 selfloop transitions, 306 changer transitions 2/733 dead transitions. [2021-06-10 15:02:58,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 733 transitions, 47771 flow [2021-06-10 15:02:58,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:02:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:02:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:02:58,530 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:02:58,530 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:02:58,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:02:58,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:02:58,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:02:58,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:58,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:58,530 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:02:58,530 INFO L185 Difference]: Start difference. First operand has 929 places, 726 transitions, 46267 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:02:58,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 934 places, 733 transitions, 47771 flow [2021-06-10 15:03:00,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 930 places, 733 transitions, 47305 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-06-10 15:03:00,599 INFO L241 Difference]: Finished difference. Result has 931 places, 724 transitions, 46239 flow [2021-06-10 15:03:00,600 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=45809, PETRI_DIFFERENCE_MINUEND_PLACES=923, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46239, PETRI_PLACES=931, PETRI_TRANSITIONS=724} [2021-06-10 15:03:00,600 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 887 predicate places. [2021-06-10 15:03:00,600 INFO L480 AbstractCegarLoop]: Abstraction has has 931 places, 724 transitions, 46239 flow [2021-06-10 15:03:00,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:00,600 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:00,600 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:00,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-06-10 15:03:00,600 INFO L428 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:00,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:00,600 INFO L82 PathProgramCache]: Analyzing trace with hash -104491899, now seen corresponding path program 296 times [2021-06-10 15:03:00,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:00,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676631511] [2021-06-10 15:03:00,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:00,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:00,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:00,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:00,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:00,612 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:00,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:00,623 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:03:00,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:03:00,642 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:03:00,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:03:00,656 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:03:00,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:03:00,675 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:00,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:00,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676631511] [2021-06-10 15:03:00,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:00,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:00,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283483650] [2021-06-10 15:03:00,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:00,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:00,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:00,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:00,694 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:00,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 724 transitions, 46239 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:00,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:00,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:00,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:02,450 INFO L129 PetriNetUnfolder]: 11/3801 cut-off events. [2021-06-10 15:03:02,451 INFO L130 PetriNetUnfolder]: For 244196/244347 co-relation queries the response was YES. [2021-06-10 15:03:02,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34819 conditions, 3801 events. 11/3801 cut-off events. For 244196/244347 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 60306 event pairs, 3 based on Foata normal form. 24/3749 useless extension candidates. Maximal degree in co-relation 34624. Up to 576 conditions per place. [2021-06-10 15:03:02,491 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 406 selfloop transitions, 304 changer transitions 3/731 dead transitions. [2021-06-10 15:03:02,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 731 transitions, 47739 flow [2021-06-10 15:03:02,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:03:02,492 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:03:02,492 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:03:02,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:03:02,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:02,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:03:02,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:02,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:02,493 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:02,493 INFO L185 Difference]: Start difference. First operand has 931 places, 724 transitions, 46239 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:03:02,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 731 transitions, 47739 flow [2021-06-10 15:03:04,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 932 places, 731 transitions, 47188 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-10 15:03:04,820 INFO L241 Difference]: Finished difference. Result has 933 places, 721 transitions, 46069 flow [2021-06-10 15:03:04,820 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=45696, PETRI_DIFFERENCE_MINUEND_PLACES=925, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46069, PETRI_PLACES=933, PETRI_TRANSITIONS=721} [2021-06-10 15:03:04,820 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 889 predicate places. [2021-06-10 15:03:04,820 INFO L480 AbstractCegarLoop]: Abstraction has has 933 places, 721 transitions, 46069 flow [2021-06-10 15:03:04,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:04,820 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:04,820 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:04,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-06-10 15:03:04,821 INFO L428 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:04,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:04,821 INFO L82 PathProgramCache]: Analyzing trace with hash -769471983, now seen corresponding path program 297 times [2021-06-10 15:03:04,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:04,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916856935] [2021-06-10 15:03:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:04,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:04,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:04,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:04,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:04,832 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:04,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:04,843 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:03:04,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:03:04,859 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:03:04,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:03:04,882 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:03:04,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:03:04,918 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:04,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:04,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916856935] [2021-06-10 15:03:04,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:04,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:04,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420182307] [2021-06-10 15:03:04,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:04,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:04,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:04,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:04,940 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:04,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 721 transitions, 46069 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:04,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:04,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:04,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:06,730 INFO L129 PetriNetUnfolder]: 11/3788 cut-off events. [2021-06-10 15:03:06,731 INFO L130 PetriNetUnfolder]: For 243409/243560 co-relation queries the response was YES. [2021-06-10 15:03:06,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34734 conditions, 3788 events. 11/3788 cut-off events. For 243409/243560 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 60101 event pairs, 3 based on Foata normal form. 24/3736 useless extension candidates. Maximal degree in co-relation 34539. Up to 576 conditions per place. [2021-06-10 15:03:06,772 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 408 selfloop transitions, 299 changer transitions 3/728 dead transitions. [2021-06-10 15:03:06,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 938 places, 728 transitions, 47563 flow [2021-06-10 15:03:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:06,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:06,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 15:03:06,773 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 15:03:06,773 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 15:03:06,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 15:03:06,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:06,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 15:03:06,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:06,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:06,773 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:06,773 INFO L185 Difference]: Start difference. First operand has 933 places, 721 transitions, 46069 flow. Second operand 8 states and 466 transitions. [2021-06-10 15:03:06,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 938 places, 728 transitions, 47563 flow [2021-06-10 15:03:09,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 934 places, 728 transitions, 47082 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-06-10 15:03:09,053 INFO L241 Difference]: Finished difference. Result has 935 places, 718 transitions, 45980 flow [2021-06-10 15:03:09,054 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=45596, PETRI_DIFFERENCE_MINUEND_PLACES=927, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45980, PETRI_PLACES=935, PETRI_TRANSITIONS=718} [2021-06-10 15:03:09,054 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 891 predicate places. [2021-06-10 15:03:09,054 INFO L480 AbstractCegarLoop]: Abstraction has has 935 places, 718 transitions, 45980 flow [2021-06-10 15:03:09,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:09,054 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:09,054 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:09,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-06-10 15:03:09,054 INFO L428 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:09,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:09,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1645432937, now seen corresponding path program 298 times [2021-06-10 15:03:09,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:09,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52273089] [2021-06-10 15:03:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:09,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:09,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:09,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:09,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:09,066 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:09,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:09,077 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:03:09,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:03:09,093 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:03:09,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:03:09,129 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:03:09,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:03:09,147 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:09,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:09,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52273089] [2021-06-10 15:03:09,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:09,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:09,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096327905] [2021-06-10 15:03:09,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:09,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:09,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:09,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:09,166 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:09,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 935 places, 718 transitions, 45980 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:09,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:09,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:09,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:10,799 INFO L129 PetriNetUnfolder]: 11/3775 cut-off events. [2021-06-10 15:03:10,799 INFO L130 PetriNetUnfolder]: For 242382/242492 co-relation queries the response was YES. [2021-06-10 15:03:10,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34725 conditions, 3775 events. 11/3775 cut-off events. For 242382/242492 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 59846 event pairs, 3 based on Foata normal form. 9/3716 useless extension candidates. Maximal degree in co-relation 34530. Up to 576 conditions per place. [2021-06-10 15:03:10,839 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 410 selfloop transitions, 295 changer transitions 2/725 dead transitions. [2021-06-10 15:03:10,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 937 places, 725 transitions, 47468 flow [2021-06-10 15:03:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:10,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:03:10,840 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:03:10,840 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:03:10,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:03:10,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:10,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:03:10,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:10,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:10,841 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:10,841 INFO L185 Difference]: Start difference. First operand has 935 places, 718 transitions, 45980 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:03:10,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 937 places, 725 transitions, 47468 flow [2021-06-10 15:03:13,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 930 places, 725 transitions, 46832 flow, removed 12 selfloop flow, removed 7 redundant places. [2021-06-10 15:03:13,049 INFO L241 Difference]: Finished difference. Result has 931 places, 716 transitions, 45778 flow [2021-06-10 15:03:13,050 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=45352, PETRI_DIFFERENCE_MINUEND_PLACES=923, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45778, PETRI_PLACES=931, PETRI_TRANSITIONS=716} [2021-06-10 15:03:13,050 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 887 predicate places. [2021-06-10 15:03:13,050 INFO L480 AbstractCegarLoop]: Abstraction has has 931 places, 716 transitions, 45778 flow [2021-06-10 15:03:13,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:13,050 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:13,050 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:13,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-06-10 15:03:13,050 INFO L428 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:13,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:13,050 INFO L82 PathProgramCache]: Analyzing trace with hash 576194093, now seen corresponding path program 299 times [2021-06-10 15:03:13,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:13,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523569709] [2021-06-10 15:03:13,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:13,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:13,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:13,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:13,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:13,062 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:13,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:13,073 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:03:13,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:03:13,089 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:03:13,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:03:13,122 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:03:13,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:03:13,142 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:13,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:13,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523569709] [2021-06-10 15:03:13,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:13,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:13,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953473443] [2021-06-10 15:03:13,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:13,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:13,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:13,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:13,160 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:13,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 716 transitions, 45778 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:13,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:13,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:13,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:14,827 INFO L129 PetriNetUnfolder]: 11/3764 cut-off events. [2021-06-10 15:03:14,827 INFO L130 PetriNetUnfolder]: For 241180/241329 co-relation queries the response was YES. [2021-06-10 15:03:14,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34614 conditions, 3764 events. 11/3764 cut-off events. For 241180/241329 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 59623 event pairs, 3 based on Foata normal form. 24/3712 useless extension candidates. Maximal degree in co-relation 34421. Up to 576 conditions per place. [2021-06-10 15:03:14,863 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 409 selfloop transitions, 291 changer transitions 4/722 dead transitions. [2021-06-10 15:03:14,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 722 transitions, 47256 flow [2021-06-10 15:03:14,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:14,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 15:03:14,864 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 15:03:14,864 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 15:03:14,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 15:03:14,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:14,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 15:03:14,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:14,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:14,865 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:14,865 INFO L185 Difference]: Start difference. First operand has 931 places, 716 transitions, 45778 flow. Second operand 8 states and 466 transitions. [2021-06-10 15:03:14,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 722 transitions, 47256 flow [2021-06-10 15:03:16,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 722 transitions, 46573 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 15:03:16,997 INFO L241 Difference]: Finished difference. Result has 932 places, 712 transitions, 45438 flow [2021-06-10 15:03:16,998 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=45101, PETRI_DIFFERENCE_MINUEND_PLACES=924, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45438, PETRI_PLACES=932, PETRI_TRANSITIONS=712} [2021-06-10 15:03:16,998 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 888 predicate places. [2021-06-10 15:03:16,998 INFO L480 AbstractCegarLoop]: Abstraction has has 932 places, 712 transitions, 45438 flow [2021-06-10 15:03:16,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:16,998 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:16,998 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:16,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-06-10 15:03:16,998 INFO L428 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:16,998 INFO L82 PathProgramCache]: Analyzing trace with hash 586434173, now seen corresponding path program 300 times [2021-06-10 15:03:16,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:16,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830519882] [2021-06-10 15:03:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:17,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:17,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:17,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:17,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:17,009 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:17,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:17,021 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:03:17,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:03:17,036 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:03:17,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:03:17,055 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:03:17,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:03:17,074 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:17,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:17,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830519882] [2021-06-10 15:03:17,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:17,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:17,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196057594] [2021-06-10 15:03:17,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:17,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:17,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:17,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:17,094 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:17,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 932 places, 712 transitions, 45438 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:17,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:17,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:17,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:18,843 INFO L129 PetriNetUnfolder]: 11/3743 cut-off events. [2021-06-10 15:03:18,843 INFO L130 PetriNetUnfolder]: For 239037/239102 co-relation queries the response was YES. [2021-06-10 15:03:18,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34316 conditions, 3743 events. 11/3743 cut-off events. For 239037/239102 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 59201 event pairs, 2 based on Foata normal form. 8/3684 useless extension candidates. Maximal degree in co-relation 34123. Up to 687 conditions per place. [2021-06-10 15:03:18,876 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 467 selfloop transitions, 274 changer transitions 2/761 dead transitions. [2021-06-10 15:03:18,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 761 transitions, 49290 flow [2021-06-10 15:03:18,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:18,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:03:18,876 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:03:18,877 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:03:18,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:03:18,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:18,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:03:18,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:18,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:18,877 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:18,877 INFO L185 Difference]: Start difference. First operand has 932 places, 712 transitions, 45438 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:03:18,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 934 places, 761 transitions, 49290 flow [2021-06-10 15:03:20,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 928 places, 761 transitions, 48575 flow, removed 31 selfloop flow, removed 6 redundant places. [2021-06-10 15:03:20,766 INFO L241 Difference]: Finished difference. Result has 933 places, 731 transitions, 46655 flow [2021-06-10 15:03:20,766 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=44788, PETRI_DIFFERENCE_MINUEND_PLACES=921, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46655, PETRI_PLACES=933, PETRI_TRANSITIONS=731} [2021-06-10 15:03:20,766 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 889 predicate places. [2021-06-10 15:03:20,766 INFO L480 AbstractCegarLoop]: Abstraction has has 933 places, 731 transitions, 46655 flow [2021-06-10 15:03:20,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:20,766 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:20,766 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:20,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-06-10 15:03:20,766 INFO L428 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1696934193, now seen corresponding path program 301 times [2021-06-10 15:03:20,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:20,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844814851] [2021-06-10 15:03:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:20,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:20,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:20,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:20,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:20,778 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:20,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:20,790 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:03:20,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:03:20,809 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:03:20,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:03:20,823 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:03:20,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:03:20,841 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:20,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:20,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844814851] [2021-06-10 15:03:20,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:20,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:20,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786817108] [2021-06-10 15:03:20,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:20,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:20,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:20,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:20,860 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:20,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 731 transitions, 46655 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:20,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:20,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:20,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:22,597 INFO L129 PetriNetUnfolder]: 10/3755 cut-off events. [2021-06-10 15:03:22,597 INFO L130 PetriNetUnfolder]: For 242175/242242 co-relation queries the response was YES. [2021-06-10 15:03:22,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34430 conditions, 3755 events. 10/3755 cut-off events. For 242175/242242 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 59495 event pairs, 2 based on Foata normal form. 8/3696 useless extension candidates. Maximal degree in co-relation 34234. Up to 687 conditions per place. [2021-06-10 15:03:22,637 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 473 selfloop transitions, 274 changer transitions 2/767 dead transitions. [2021-06-10 15:03:22,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 939 places, 767 transitions, 49763 flow [2021-06-10 15:03:22,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:22,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:03:22,638 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:03:22,638 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:03:22,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:03:22,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:22,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:03:22,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:22,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:22,639 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:22,639 INFO L185 Difference]: Start difference. First operand has 933 places, 731 transitions, 46655 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:03:22,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 939 places, 767 transitions, 49763 flow [2021-06-10 15:03:24,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 934 places, 767 transitions, 49136 flow, removed 42 selfloop flow, removed 5 redundant places. [2021-06-10 15:03:24,775 INFO L241 Difference]: Finished difference. Result has 939 places, 741 transitions, 47266 flow [2021-06-10 15:03:24,775 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46060, PETRI_DIFFERENCE_MINUEND_PLACES=927, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47266, PETRI_PLACES=939, PETRI_TRANSITIONS=741} [2021-06-10 15:03:24,775 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 895 predicate places. [2021-06-10 15:03:24,775 INFO L480 AbstractCegarLoop]: Abstraction has has 939 places, 741 transitions, 47266 flow [2021-06-10 15:03:24,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:24,775 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:24,775 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:24,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-06-10 15:03:24,775 INFO L428 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:24,776 INFO L82 PathProgramCache]: Analyzing trace with hash -172168101, now seen corresponding path program 302 times [2021-06-10 15:03:24,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:24,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446883094] [2021-06-10 15:03:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:24,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:24,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:24,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:24,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:24,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:24,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:24,799 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:03:24,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:03:24,814 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:03:24,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:03:24,829 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:03:24,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:03:24,847 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:24,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:24,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446883094] [2021-06-10 15:03:24,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:24,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:24,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41003118] [2021-06-10 15:03:24,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:24,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:24,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:24,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:24,865 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:24,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 741 transitions, 47266 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:24,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:24,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:24,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:26,616 INFO L129 PetriNetUnfolder]: 10/3744 cut-off events. [2021-06-10 15:03:26,616 INFO L130 PetriNetUnfolder]: For 244294/244379 co-relation queries the response was YES. [2021-06-10 15:03:26,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34396 conditions, 3744 events. 10/3744 cut-off events. For 244294/244379 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 59312 event pairs, 2 based on Foata normal form. 11/3688 useless extension candidates. Maximal degree in co-relation 34197. Up to 687 conditions per place. [2021-06-10 15:03:26,657 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 474 selfloop transitions, 275 changer transitions 2/769 dead transitions. [2021-06-10 15:03:26,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 945 places, 769 transitions, 49940 flow [2021-06-10 15:03:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:26,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:03:26,658 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:03:26,658 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:03:26,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:03:26,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:26,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:03:26,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:26,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:26,659 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:26,659 INFO L185 Difference]: Start difference. First operand has 939 places, 741 transitions, 47266 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:03:26,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 945 places, 769 transitions, 49940 flow [2021-06-10 15:03:28,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 942 places, 769 transitions, 49746 flow, removed 16 selfloop flow, removed 3 redundant places. [2021-06-10 15:03:28,803 INFO L241 Difference]: Finished difference. Result has 945 places, 743 transitions, 47744 flow [2021-06-10 15:03:28,803 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47082, PETRI_DIFFERENCE_MINUEND_PLACES=935, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47744, PETRI_PLACES=945, PETRI_TRANSITIONS=743} [2021-06-10 15:03:28,803 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 901 predicate places. [2021-06-10 15:03:28,803 INFO L480 AbstractCegarLoop]: Abstraction has has 945 places, 743 transitions, 47744 flow [2021-06-10 15:03:28,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:28,803 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:28,803 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:28,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-06-10 15:03:28,803 INFO L428 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:28,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:28,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1119012347, now seen corresponding path program 303 times [2021-06-10 15:03:28,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:28,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756869008] [2021-06-10 15:03:28,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:28,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:28,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:28,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:28,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:28,814 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:28,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:28,827 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:03:28,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:03:28,842 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:03:28,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:03:28,863 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:03:28,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:03:28,882 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:28,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:28,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756869008] [2021-06-10 15:03:28,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:28,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:28,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515661248] [2021-06-10 15:03:28,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:28,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:28,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:28,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:28,909 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:28,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 945 places, 743 transitions, 47744 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:28,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:28,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:28,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:30,529 INFO L129 PetriNetUnfolder]: 10/3733 cut-off events. [2021-06-10 15:03:30,529 INFO L130 PetriNetUnfolder]: For 246974/247059 co-relation queries the response was YES. [2021-06-10 15:03:30,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34632 conditions, 3733 events. 10/3733 cut-off events. For 246974/247059 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 58988 event pairs, 4 based on Foata normal form. 11/3677 useless extension candidates. Maximal degree in co-relation 34432. Up to 687 conditions per place. [2021-06-10 15:03:30,571 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 468 selfloop transitions, 277 changer transitions 3/766 dead transitions. [2021-06-10 15:03:30,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 951 places, 766 transitions, 50200 flow [2021-06-10 15:03:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:03:30,572 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:03:30,572 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:03:30,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:03:30,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:30,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:03:30,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:30,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:30,573 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:30,573 INFO L185 Difference]: Start difference. First operand has 945 places, 743 transitions, 47744 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:03:30,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 951 places, 766 transitions, 50200 flow [2021-06-10 15:03:32,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 948 places, 766 transitions, 49790 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-06-10 15:03:32,800 INFO L241 Difference]: Finished difference. Result has 950 places, 742 transitions, 47865 flow [2021-06-10 15:03:32,801 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47342, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47865, PETRI_PLACES=950, PETRI_TRANSITIONS=742} [2021-06-10 15:03:32,801 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 906 predicate places. [2021-06-10 15:03:32,801 INFO L480 AbstractCegarLoop]: Abstraction has has 950 places, 742 transitions, 47865 flow [2021-06-10 15:03:32,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:32,801 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:32,801 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:32,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-06-10 15:03:32,801 INFO L428 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:32,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:32,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1316377895, now seen corresponding path program 304 times [2021-06-10 15:03:32,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:32,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661519291] [2021-06-10 15:03:32,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:32,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:32,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:32,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:32,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:32,817 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:32,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:32,830 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:03:32,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:03:32,846 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:03:32,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:03:32,868 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:03:32,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:03:32,888 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:32,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:32,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661519291] [2021-06-10 15:03:32,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:32,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:32,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294294055] [2021-06-10 15:03:32,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:32,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:32,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:32,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:32,910 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:32,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 950 places, 742 transitions, 47865 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:32,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:32,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:32,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:34,728 INFO L129 PetriNetUnfolder]: 10/3720 cut-off events. [2021-06-10 15:03:34,728 INFO L130 PetriNetUnfolder]: For 246768/246847 co-relation queries the response was YES. [2021-06-10 15:03:34,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34652 conditions, 3720 events. 10/3720 cut-off events. For 246768/246847 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 58821 event pairs, 2 based on Foata normal form. 9/3662 useless extension candidates. Maximal degree in co-relation 34451. Up to 687 conditions per place. [2021-06-10 15:03:34,766 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 466 selfloop transitions, 277 changer transitions 2/763 dead transitions. [2021-06-10 15:03:34,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 763 transitions, 50193 flow [2021-06-10 15:03:34,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:34,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:03:34,767 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:03:34,767 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:03:34,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:03:34,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:34,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:03:34,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:34,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:34,768 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:34,768 INFO L185 Difference]: Start difference. First operand has 950 places, 742 transitions, 47865 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:03:34,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 763 transitions, 50193 flow [2021-06-10 15:03:36,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 763 transitions, 49636 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-06-10 15:03:36,905 INFO L241 Difference]: Finished difference. Result has 953 places, 742 transitions, 47874 flow [2021-06-10 15:03:36,905 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47316, PETRI_DIFFERENCE_MINUEND_PLACES=944, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47874, PETRI_PLACES=953, PETRI_TRANSITIONS=742} [2021-06-10 15:03:36,905 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 909 predicate places. [2021-06-10 15:03:36,905 INFO L480 AbstractCegarLoop]: Abstraction has has 953 places, 742 transitions, 47874 flow [2021-06-10 15:03:36,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:36,905 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:36,906 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:36,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-06-10 15:03:36,906 INFO L428 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:36,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:36,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1045737465, now seen corresponding path program 305 times [2021-06-10 15:03:36,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:36,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494158708] [2021-06-10 15:03:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:36,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:36,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:36,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:36,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:36,921 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:36,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:36,935 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:03:36,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:03:36,953 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:03:36,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:03:36,967 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:03:36,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:03:36,986 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:36,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:37,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494158708] [2021-06-10 15:03:37,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:37,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:37,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040979566] [2021-06-10 15:03:37,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:37,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:37,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:37,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:37,005 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:37,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 953 places, 742 transitions, 47874 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:37,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:37,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:37,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:38,806 INFO L129 PetriNetUnfolder]: 10/3710 cut-off events. [2021-06-10 15:03:38,807 INFO L130 PetriNetUnfolder]: For 246855/246934 co-relation queries the response was YES. [2021-06-10 15:03:38,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34599 conditions, 3710 events. 10/3710 cut-off events. For 246855/246934 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 58648 event pairs, 2 based on Foata normal form. 9/3652 useless extension candidates. Maximal degree in co-relation 34397. Up to 687 conditions per place. [2021-06-10 15:03:38,840 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 454 selfloop transitions, 288 changer transitions 1/761 dead transitions. [2021-06-10 15:03:38,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 959 places, 761 transitions, 50116 flow [2021-06-10 15:03:38,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:03:38,841 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:03:38,841 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:03:38,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:03:38,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:38,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:03:38,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:38,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:38,842 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:38,842 INFO L185 Difference]: Start difference. First operand has 953 places, 742 transitions, 47874 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:03:38,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 959 places, 761 transitions, 50116 flow [2021-06-10 15:03:40,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 955 places, 761 transitions, 49606 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-06-10 15:03:40,903 INFO L241 Difference]: Finished difference. Result has 957 places, 747 transitions, 48308 flow [2021-06-10 15:03:40,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47372, PETRI_DIFFERENCE_MINUEND_PLACES=948, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48308, PETRI_PLACES=957, PETRI_TRANSITIONS=747} [2021-06-10 15:03:40,904 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 913 predicate places. [2021-06-10 15:03:40,904 INFO L480 AbstractCegarLoop]: Abstraction has has 957 places, 747 transitions, 48308 flow [2021-06-10 15:03:40,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:40,904 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:40,904 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:40,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-06-10 15:03:40,904 INFO L428 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:40,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:40,904 INFO L82 PathProgramCache]: Analyzing trace with hash 2098383883, now seen corresponding path program 306 times [2021-06-10 15:03:40,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:40,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195091896] [2021-06-10 15:03:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:40,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:40,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:40,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:40,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:40,916 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:40,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:40,928 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:03:40,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:03:40,946 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:03:40,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:03:40,968 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:03:40,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:03:40,986 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:40,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:41,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195091896] [2021-06-10 15:03:41,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:41,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:41,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636413418] [2021-06-10 15:03:41,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:41,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:41,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:41,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:41,005 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:41,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 957 places, 747 transitions, 48308 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:41,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:41,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:41,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:42,745 INFO L129 PetriNetUnfolder]: 10/3706 cut-off events. [2021-06-10 15:03:42,745 INFO L130 PetriNetUnfolder]: For 248174/248259 co-relation queries the response was YES. [2021-06-10 15:03:42,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34625 conditions, 3706 events. 10/3706 cut-off events. For 248174/248259 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 58516 event pairs, 2 based on Foata normal form. 11/3650 useless extension candidates. Maximal degree in co-relation 34422. Up to 687 conditions per place. [2021-06-10 15:03:42,785 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 455 selfloop transitions, 285 changer transitions 2/760 dead transitions. [2021-06-10 15:03:42,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 963 places, 760 transitions, 50164 flow [2021-06-10 15:03:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:03:42,786 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:03:42,786 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:03:42,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:03:42,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:42,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:03:42,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:42,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:42,787 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:42,787 INFO L185 Difference]: Start difference. First operand has 957 places, 747 transitions, 48308 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:03:42,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 963 places, 760 transitions, 50164 flow [2021-06-10 15:03:44,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 959 places, 760 transitions, 49630 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-06-10 15:03:45,006 INFO L241 Difference]: Finished difference. Result has 960 places, 745 transitions, 48210 flow [2021-06-10 15:03:45,007 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47782, PETRI_DIFFERENCE_MINUEND_PLACES=952, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48210, PETRI_PLACES=960, PETRI_TRANSITIONS=745} [2021-06-10 15:03:45,007 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 916 predicate places. [2021-06-10 15:03:45,007 INFO L480 AbstractCegarLoop]: Abstraction has has 960 places, 745 transitions, 48210 flow [2021-06-10 15:03:45,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:45,007 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:45,007 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:45,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-06-10 15:03:45,007 INFO L428 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:45,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:45,008 INFO L82 PathProgramCache]: Analyzing trace with hash -911471409, now seen corresponding path program 307 times [2021-06-10 15:03:45,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:45,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742078213] [2021-06-10 15:03:45,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:45,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:45,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:45,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:45,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:45,018 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:45,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:45,031 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:03:45,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:03:45,049 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:03:45,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:03:45,064 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:03:45,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:03:45,082 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:45,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:45,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742078213] [2021-06-10 15:03:45,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:45,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:45,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117694462] [2021-06-10 15:03:45,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:45,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:45,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:45,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:45,101 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:45,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 960 places, 745 transitions, 48210 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:45,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:45,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:45,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:46,863 INFO L129 PetriNetUnfolder]: 10/3696 cut-off events. [2021-06-10 15:03:46,863 INFO L130 PetriNetUnfolder]: For 247322/247407 co-relation queries the response was YES. [2021-06-10 15:03:46,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34580 conditions, 3696 events. 10/3696 cut-off events. For 247322/247407 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 58339 event pairs, 2 based on Foata normal form. 11/3640 useless extension candidates. Maximal degree in co-relation 34377. Up to 687 conditions per place. [2021-06-10 15:03:46,905 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 452 selfloop transitions, 286 changer transitions 2/758 dead transitions. [2021-06-10 15:03:46,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 966 places, 758 transitions, 50062 flow [2021-06-10 15:03:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:46,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:03:46,906 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:03:46,906 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:03:46,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:03:46,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:46,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:03:46,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:46,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:46,906 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:46,906 INFO L185 Difference]: Start difference. First operand has 960 places, 745 transitions, 48210 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:03:46,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 966 places, 758 transitions, 50062 flow [2021-06-10 15:03:49,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 963 places, 758 transitions, 49644 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-06-10 15:03:49,120 INFO L241 Difference]: Finished difference. Result has 964 places, 743 transitions, 48215 flow [2021-06-10 15:03:49,121 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47800, PETRI_DIFFERENCE_MINUEND_PLACES=956, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48215, PETRI_PLACES=964, PETRI_TRANSITIONS=743} [2021-06-10 15:03:49,121 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 920 predicate places. [2021-06-10 15:03:49,121 INFO L480 AbstractCegarLoop]: Abstraction has has 964 places, 743 transitions, 48215 flow [2021-06-10 15:03:49,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:49,121 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:49,121 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:49,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-06-10 15:03:49,121 INFO L428 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:49,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:49,121 INFO L82 PathProgramCache]: Analyzing trace with hash 744666177, now seen corresponding path program 308 times [2021-06-10 15:03:49,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:49,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068802677] [2021-06-10 15:03:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:49,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:49,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:49,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:49,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:49,141 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:49,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:49,153 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:03:49,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:03:49,171 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:03:49,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:03:49,193 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:03:49,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:03:49,212 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:49,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:49,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068802677] [2021-06-10 15:03:49,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:49,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:49,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076537949] [2021-06-10 15:03:49,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:49,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:49,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:49,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:49,231 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:49,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 964 places, 743 transitions, 48215 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:49,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:49,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:49,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:50,849 INFO L129 PetriNetUnfolder]: 10/3681 cut-off events. [2021-06-10 15:03:50,849 INFO L130 PetriNetUnfolder]: For 246865/246950 co-relation queries the response was YES. [2021-06-10 15:03:50,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34513 conditions, 3681 events. 10/3681 cut-off events. For 246865/246950 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 58058 event pairs, 4 based on Foata normal form. 11/3626 useless extension candidates. Maximal degree in co-relation 34310. Up to 687 conditions per place. [2021-06-10 15:03:50,889 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 451 selfloop transitions, 285 changer transitions 2/756 dead transitions. [2021-06-10 15:03:50,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 970 places, 756 transitions, 50063 flow [2021-06-10 15:03:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:50,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:03:50,890 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:03:50,890 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:03:50,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:03:50,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:50,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:03:50,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:50,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:50,891 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:50,891 INFO L185 Difference]: Start difference. First operand has 964 places, 743 transitions, 48215 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:03:50,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 970 places, 756 transitions, 50063 flow [2021-06-10 15:03:53,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 965 places, 756 transitions, 49499 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 15:03:53,149 INFO L241 Difference]: Finished difference. Result has 966 places, 741 transitions, 48070 flow [2021-06-10 15:03:53,150 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47659, PETRI_DIFFERENCE_MINUEND_PLACES=958, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48070, PETRI_PLACES=966, PETRI_TRANSITIONS=741} [2021-06-10 15:03:53,150 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 922 predicate places. [2021-06-10 15:03:53,150 INFO L480 AbstractCegarLoop]: Abstraction has has 966 places, 741 transitions, 48070 flow [2021-06-10 15:03:53,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:53,150 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:53,150 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:53,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-06-10 15:03:53,150 INFO L428 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:53,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:53,150 INFO L82 PathProgramCache]: Analyzing trace with hash -962587093, now seen corresponding path program 309 times [2021-06-10 15:03:53,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:53,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26000223] [2021-06-10 15:03:53,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:53,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:53,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:53,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:53,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:53,162 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:53,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:53,175 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:03:53,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:03:53,193 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 15:03:53,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 15:03:53,217 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:03:53,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:03:53,236 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:53,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:53,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26000223] [2021-06-10 15:03:53,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:53,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:53,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189257449] [2021-06-10 15:03:53,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:53,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:53,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:53,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:53,255 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:53,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 966 places, 741 transitions, 48070 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:53,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:53,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:53,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:55,035 INFO L129 PetriNetUnfolder]: 10/3671 cut-off events. [2021-06-10 15:03:55,035 INFO L130 PetriNetUnfolder]: For 245600/245679 co-relation queries the response was YES. [2021-06-10 15:03:55,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34428 conditions, 3671 events. 10/3671 cut-off events. For 245600/245679 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 57865 event pairs, 2 based on Foata normal form. 9/3614 useless extension candidates. Maximal degree in co-relation 34225. Up to 687 conditions per place. [2021-06-10 15:03:55,073 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 454 selfloop transitions, 279 changer transitions 3/754 dead transitions. [2021-06-10 15:03:55,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 972 places, 754 transitions, 49914 flow [2021-06-10 15:03:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:03:55,077 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:03:55,077 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:03:55,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:03:55,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:55,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:03:55,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:55,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:55,078 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:55,078 INFO L185 Difference]: Start difference. First operand has 966 places, 741 transitions, 48070 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:03:55,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 972 places, 754 transitions, 49914 flow [2021-06-10 15:03:57,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 967 places, 754 transitions, 49351 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 15:03:57,176 INFO L241 Difference]: Finished difference. Result has 968 places, 738 transitions, 47879 flow [2021-06-10 15:03:57,177 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47515, PETRI_DIFFERENCE_MINUEND_PLACES=960, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47879, PETRI_PLACES=968, PETRI_TRANSITIONS=738} [2021-06-10 15:03:57,177 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 924 predicate places. [2021-06-10 15:03:57,177 INFO L480 AbstractCegarLoop]: Abstraction has has 968 places, 738 transitions, 47879 flow [2021-06-10 15:03:57,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:57,177 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:03:57,177 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:03:57,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-06-10 15:03:57,177 INFO L428 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:03:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:03:57,178 INFO L82 PathProgramCache]: Analyzing trace with hash 525520741, now seen corresponding path program 310 times [2021-06-10 15:03:57,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:03:57,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851619246] [2021-06-10 15:03:57,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:03:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:03:57,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:57,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:03:57,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:03:57,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:03:57,189 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:03:57,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:03:57,201 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:03:57,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:03:57,217 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:03:57,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:03:57,232 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:03:57,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:03:57,250 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:03:57,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:03:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:03:57,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851619246] [2021-06-10 15:03:57,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:03:57,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:03:57,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268201432] [2021-06-10 15:03:57,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:03:57,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:03:57,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:03:57,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:03:57,269 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:03:57,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 968 places, 738 transitions, 47879 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:57,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:03:57,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:03:57,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:03:59,038 INFO L129 PetriNetUnfolder]: 10/3654 cut-off events. [2021-06-10 15:03:59,039 INFO L130 PetriNetUnfolder]: For 244635/244720 co-relation queries the response was YES. [2021-06-10 15:03:59,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34261 conditions, 3654 events. 10/3654 cut-off events. For 244635/244720 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 57504 event pairs, 2 based on Foata normal form. 11/3599 useless extension candidates. Maximal degree in co-relation 34058. Up to 687 conditions per place. [2021-06-10 15:03:59,071 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 447 selfloop transitions, 285 changer transitions 1/751 dead transitions. [2021-06-10 15:03:59,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 973 places, 751 transitions, 49717 flow [2021-06-10 15:03:59,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:03:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:03:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:03:59,072 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:03:59,072 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:03:59,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:03:59,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:03:59,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:03:59,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:59,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:59,073 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:03:59,073 INFO L185 Difference]: Start difference. First operand has 968 places, 738 transitions, 47879 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:03:59,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 973 places, 751 transitions, 49717 flow [2021-06-10 15:04:01,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 967 places, 751 transitions, 49121 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-06-10 15:04:01,138 INFO L241 Difference]: Finished difference. Result has 969 places, 743 transitions, 48183 flow [2021-06-10 15:04:01,138 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47291, PETRI_DIFFERENCE_MINUEND_PLACES=960, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48183, PETRI_PLACES=969, PETRI_TRANSITIONS=743} [2021-06-10 15:04:01,138 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 925 predicate places. [2021-06-10 15:04:01,138 INFO L480 AbstractCegarLoop]: Abstraction has has 969 places, 743 transitions, 48183 flow [2021-06-10 15:04:01,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:01,138 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:01,138 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:01,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-06-10 15:04:01,138 INFO L428 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:01,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:01,139 INFO L82 PathProgramCache]: Analyzing trace with hash 480531119, now seen corresponding path program 311 times [2021-06-10 15:04:01,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:01,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840540460] [2021-06-10 15:04:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:01,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:01,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:01,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:01,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:01,150 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:01,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:01,161 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:04:01,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:04:01,176 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:04:01,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:04:01,197 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:04:01,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:04:01,216 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:01,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:01,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840540460] [2021-06-10 15:04:01,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:01,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:01,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957816487] [2021-06-10 15:04:01,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:01,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:01,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:01,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:01,234 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:01,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 969 places, 743 transitions, 48183 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:01,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:01,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:01,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:02,981 INFO L129 PetriNetUnfolder]: 10/3649 cut-off events. [2021-06-10 15:04:02,981 INFO L130 PetriNetUnfolder]: For 246645/246730 co-relation queries the response was YES. [2021-06-10 15:04:03,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34217 conditions, 3649 events. 10/3649 cut-off events. For 246645/246730 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 57403 event pairs, 2 based on Foata normal form. 11/3595 useless extension candidates. Maximal degree in co-relation 34013. Up to 687 conditions per place. [2021-06-10 15:04:03,021 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 450 selfloop transitions, 280 changer transitions 2/750 dead transitions. [2021-06-10 15:04:03,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 974 places, 750 transitions, 49725 flow [2021-06-10 15:04:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:04:03,022 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:04:03,022 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:04:03,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:04:03,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:03,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:04:03,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:03,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:03,023 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:03,023 INFO L185 Difference]: Start difference. First operand has 969 places, 743 transitions, 48183 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:04:03,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 974 places, 750 transitions, 49725 flow [2021-06-10 15:04:05,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 971 places, 750 transitions, 49285 flow, removed 23 selfloop flow, removed 3 redundant places. [2021-06-10 15:04:05,233 INFO L241 Difference]: Finished difference. Result has 972 places, 741 transitions, 48178 flow [2021-06-10 15:04:05,233 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47751, PETRI_DIFFERENCE_MINUEND_PLACES=964, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48178, PETRI_PLACES=972, PETRI_TRANSITIONS=741} [2021-06-10 15:04:05,233 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 928 predicate places. [2021-06-10 15:04:05,233 INFO L480 AbstractCegarLoop]: Abstraction has has 972 places, 741 transitions, 48178 flow [2021-06-10 15:04:05,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:05,234 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:05,234 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:05,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-06-10 15:04:05,234 INFO L428 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:05,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:05,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1680057005, now seen corresponding path program 312 times [2021-06-10 15:04:05,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:05,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174689436] [2021-06-10 15:04:05,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:05,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:05,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:05,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:05,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:05,245 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:05,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:05,258 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:04:05,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:04:05,274 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:04:05,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:04:05,296 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:04:05,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:04:05,315 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:05,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:05,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174689436] [2021-06-10 15:04:05,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:05,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:05,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804056483] [2021-06-10 15:04:05,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:05,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:05,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:05,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:05,335 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:05,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 972 places, 741 transitions, 48178 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:05,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:05,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:05,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:07,092 INFO L129 PetriNetUnfolder]: 10/3638 cut-off events. [2021-06-10 15:04:07,093 INFO L130 PetriNetUnfolder]: For 246461/246546 co-relation queries the response was YES. [2021-06-10 15:04:07,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34231 conditions, 3638 events. 10/3638 cut-off events. For 246461/246546 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 57124 event pairs, 4 based on Foata normal form. 11/3584 useless extension candidates. Maximal degree in co-relation 34027. Up to 687 conditions per place. [2021-06-10 15:04:07,133 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 447 selfloop transitions, 281 changer transitions 2/748 dead transitions. [2021-06-10 15:04:07,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 978 places, 748 transitions, 49716 flow [2021-06-10 15:04:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:04:07,134 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:04:07,134 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:04:07,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:04:07,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:07,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:04:07,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:07,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:07,135 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:07,135 INFO L185 Difference]: Start difference. First operand has 972 places, 741 transitions, 48178 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:04:07,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 978 places, 748 transitions, 49716 flow [2021-06-10 15:04:09,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 975 places, 748 transitions, 49298 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-06-10 15:04:09,353 INFO L241 Difference]: Finished difference. Result has 976 places, 739 transitions, 48181 flow [2021-06-10 15:04:09,354 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47768, PETRI_DIFFERENCE_MINUEND_PLACES=968, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48181, PETRI_PLACES=976, PETRI_TRANSITIONS=739} [2021-06-10 15:04:09,354 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 932 predicate places. [2021-06-10 15:04:09,354 INFO L480 AbstractCegarLoop]: Abstraction has has 976 places, 739 transitions, 48181 flow [2021-06-10 15:04:09,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:09,354 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:09,354 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:09,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-06-10 15:04:09,354 INFO L428 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:09,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:09,355 INFO L82 PathProgramCache]: Analyzing trace with hash -813959225, now seen corresponding path program 313 times [2021-06-10 15:04:09,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:09,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297060016] [2021-06-10 15:04:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:09,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:09,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:09,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:09,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:09,366 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:09,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:09,379 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:04:09,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:04:09,396 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:04:09,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:04:09,411 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:04:09,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:04:09,430 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:09,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:09,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297060016] [2021-06-10 15:04:09,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:09,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:09,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999973763] [2021-06-10 15:04:09,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:09,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:09,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:09,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:09,449 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:09,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 976 places, 739 transitions, 48181 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:09,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:09,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:09,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:11,074 INFO L129 PetriNetUnfolder]: 10/3627 cut-off events. [2021-06-10 15:04:11,074 INFO L130 PetriNetUnfolder]: For 245738/245817 co-relation queries the response was YES. [2021-06-10 15:04:11,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34251 conditions, 3627 events. 10/3627 cut-off events. For 245738/245817 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 57040 event pairs, 2 based on Foata normal form. 9/3571 useless extension candidates. Maximal degree in co-relation 34047. Up to 687 conditions per place. [2021-06-10 15:04:11,124 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 444 selfloop transitions, 282 changer transitions 2/746 dead transitions. [2021-06-10 15:04:11,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 982 places, 746 transitions, 49715 flow [2021-06-10 15:04:11,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:04:11,125 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:04:11,125 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:04:11,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:04:11,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:11,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:04:11,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:11,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:11,125 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:11,125 INFO L185 Difference]: Start difference. First operand has 976 places, 739 transitions, 48181 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:04:11,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 982 places, 746 transitions, 49715 flow [2021-06-10 15:04:13,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 977 places, 746 transitions, 49159 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 15:04:13,383 INFO L241 Difference]: Finished difference. Result has 978 places, 737 transitions, 48052 flow [2021-06-10 15:04:13,384 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47633, PETRI_DIFFERENCE_MINUEND_PLACES=970, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48052, PETRI_PLACES=978, PETRI_TRANSITIONS=737} [2021-06-10 15:04:13,384 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 934 predicate places. [2021-06-10 15:04:13,384 INFO L480 AbstractCegarLoop]: Abstraction has has 978 places, 737 transitions, 48052 flow [2021-06-10 15:04:13,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:13,384 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:13,384 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:13,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-06-10 15:04:13,384 INFO L428 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:13,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:13,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2084224699, now seen corresponding path program 314 times [2021-06-10 15:04:13,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:13,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466830341] [2021-06-10 15:04:13,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:13,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:13,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:13,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:13,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:13,397 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:13,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:13,409 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:04:13,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:04:13,425 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:04:13,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:04:13,454 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:04:13,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:04:13,473 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:13,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:13,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:13,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466830341] [2021-06-10 15:04:13,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:13,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:13,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279464201] [2021-06-10 15:04:13,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:13,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:13,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:13,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:13,493 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:13,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 978 places, 737 transitions, 48052 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:13,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:13,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:13,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:15,219 INFO L129 PetriNetUnfolder]: 10/3612 cut-off events. [2021-06-10 15:04:15,219 INFO L130 PetriNetUnfolder]: For 244815/244900 co-relation queries the response was YES. [2021-06-10 15:04:15,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34088 conditions, 3612 events. 10/3612 cut-off events. For 244815/244900 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 56719 event pairs, 2 based on Foata normal form. 11/3558 useless extension candidates. Maximal degree in co-relation 33884. Up to 687 conditions per place. [2021-06-10 15:04:15,256 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 453 selfloop transitions, 270 changer transitions 3/744 dead transitions. [2021-06-10 15:04:15,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 982 places, 744 transitions, 49582 flow [2021-06-10 15:04:15,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 15:04:15,257 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 15:04:15,257 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 15:04:15,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 15:04:15,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:15,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 15:04:15,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:15,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:15,258 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:15,258 INFO L185 Difference]: Start difference. First operand has 978 places, 737 transitions, 48052 flow. Second operand 8 states and 466 transitions. [2021-06-10 15:04:15,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 982 places, 744 transitions, 49582 flow [2021-06-10 15:04:17,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 975 places, 744 transitions, 48665 flow, removed 13 selfloop flow, removed 7 redundant places. [2021-06-10 15:04:17,392 INFO L241 Difference]: Finished difference. Result has 976 places, 734 transitions, 47496 flow [2021-06-10 15:04:17,392 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=47143, PETRI_DIFFERENCE_MINUEND_PLACES=968, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47496, PETRI_PLACES=976, PETRI_TRANSITIONS=734} [2021-06-10 15:04:17,392 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 932 predicate places. [2021-06-10 15:04:17,392 INFO L480 AbstractCegarLoop]: Abstraction has has 976 places, 734 transitions, 47496 flow [2021-06-10 15:04:17,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:17,393 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:17,393 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:17,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-06-10 15:04:17,393 INFO L428 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:17,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:17,393 INFO L82 PathProgramCache]: Analyzing trace with hash -521297977, now seen corresponding path program 315 times [2021-06-10 15:04:17,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:17,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716164923] [2021-06-10 15:04:17,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:17,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:17,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:17,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:17,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:17,404 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:17,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:17,416 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:04:17,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:04:17,432 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:04:17,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:04:17,454 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:04:17,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:04:17,472 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:17,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:17,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716164923] [2021-06-10 15:04:17,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:17,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:17,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083761070] [2021-06-10 15:04:17,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:17,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:17,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:17,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:17,491 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:17,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 976 places, 734 transitions, 47496 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:17,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:17,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:17,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:19,192 INFO L129 PetriNetUnfolder]: 10/3599 cut-off events. [2021-06-10 15:04:19,192 INFO L130 PetriNetUnfolder]: For 241562/241647 co-relation queries the response was YES. [2021-06-10 15:04:19,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33714 conditions, 3599 events. 10/3599 cut-off events. For 241562/241647 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 56447 event pairs, 2 based on Foata normal form. 11/3545 useless extension candidates. Maximal degree in co-relation 33510. Up to 687 conditions per place. [2021-06-10 15:04:19,235 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 447 selfloop transitions, 274 changer transitions 2/741 dead transitions. [2021-06-10 15:04:19,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 980 places, 741 transitions, 49020 flow [2021-06-10 15:04:19,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:04:19,236 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:04:19,236 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:04:19,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:04:19,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:19,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:04:19,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:19,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:19,237 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:19,237 INFO L185 Difference]: Start difference. First operand has 976 places, 734 transitions, 47496 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:04:19,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 980 places, 741 transitions, 49020 flow [2021-06-10 15:04:21,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 974 places, 741 transitions, 48461 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-06-10 15:04:21,345 INFO L241 Difference]: Finished difference. Result has 975 places, 732 transitions, 47336 flow [2021-06-10 15:04:21,345 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46945, PETRI_DIFFERENCE_MINUEND_PLACES=967, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47336, PETRI_PLACES=975, PETRI_TRANSITIONS=732} [2021-06-10 15:04:21,346 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 931 predicate places. [2021-06-10 15:04:21,346 INFO L480 AbstractCegarLoop]: Abstraction has has 975 places, 732 transitions, 47336 flow [2021-06-10 15:04:21,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:21,346 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:21,346 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:21,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-06-10 15:04:21,346 INFO L428 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:21,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:21,346 INFO L82 PathProgramCache]: Analyzing trace with hash -915581089, now seen corresponding path program 316 times [2021-06-10 15:04:21,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:21,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46015212] [2021-06-10 15:04:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:21,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:21,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:21,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:21,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:21,359 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:21,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:21,372 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:04:21,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:04:21,391 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:04:21,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:04:21,406 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:04:21,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:04:21,425 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:21,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:21,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46015212] [2021-06-10 15:04:21,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:21,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:21,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743327410] [2021-06-10 15:04:21,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:21,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:21,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:21,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:21,444 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:21,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 975 places, 732 transitions, 47336 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:21,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:21,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:21,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:23,138 INFO L129 PetriNetUnfolder]: 10/3588 cut-off events. [2021-06-10 15:04:23,138 INFO L130 PetriNetUnfolder]: For 240698/240783 co-relation queries the response was YES. [2021-06-10 15:04:23,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33613 conditions, 3588 events. 10/3588 cut-off events. For 240698/240783 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 56246 event pairs, 4 based on Foata normal form. 11/3534 useless extension candidates. Maximal degree in co-relation 33410. Up to 687 conditions per place. [2021-06-10 15:04:23,179 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 458 selfloop transitions, 259 changer transitions 3/738 dead transitions. [2021-06-10 15:04:23,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 981 places, 738 transitions, 48903 flow [2021-06-10 15:04:23,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 464 transitions. [2021-06-10 15:04:23,180 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2021-06-10 15:04:23,180 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 464 transitions. [2021-06-10 15:04:23,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 464 transitions. [2021-06-10 15:04:23,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:23,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 464 transitions. [2021-06-10 15:04:23,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:23,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:23,181 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:23,181 INFO L185 Difference]: Start difference. First operand has 975 places, 732 transitions, 47336 flow. Second operand 8 states and 464 transitions. [2021-06-10 15:04:23,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 981 places, 738 transitions, 48903 flow [2021-06-10 15:04:25,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 977 places, 738 transitions, 48392 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-06-10 15:04:25,393 INFO L241 Difference]: Finished difference. Result has 979 places, 730 transitions, 47260 flow [2021-06-10 15:04:25,394 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46830, PETRI_DIFFERENCE_MINUEND_PLACES=970, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47260, PETRI_PLACES=979, PETRI_TRANSITIONS=730} [2021-06-10 15:04:25,394 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 935 predicate places. [2021-06-10 15:04:25,394 INFO L480 AbstractCegarLoop]: Abstraction has has 979 places, 730 transitions, 47260 flow [2021-06-10 15:04:25,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:25,394 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:25,394 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:25,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-06-10 15:04:25,394 INFO L428 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:25,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:25,395 INFO L82 PathProgramCache]: Analyzing trace with hash 850596919, now seen corresponding path program 317 times [2021-06-10 15:04:25,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:25,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343362654] [2021-06-10 15:04:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:25,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:25,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:25,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:25,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:25,407 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:25,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:25,420 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:04:25,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:04:25,436 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:04:25,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:04:25,457 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:04:25,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:04:25,477 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:25,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:25,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343362654] [2021-06-10 15:04:25,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:25,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:25,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766048515] [2021-06-10 15:04:25,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:25,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:25,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:25,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:25,495 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:25,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 979 places, 730 transitions, 47260 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:25,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:25,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:25,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:27,188 INFO L129 PetriNetUnfolder]: 10/3575 cut-off events. [2021-06-10 15:04:27,188 INFO L130 PetriNetUnfolder]: For 239579/239658 co-relation queries the response was YES. [2021-06-10 15:04:27,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33543 conditions, 3575 events. 10/3575 cut-off events. For 239579/239658 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 56060 event pairs, 2 based on Foata normal form. 9/3519 useless extension candidates. Maximal degree in co-relation 33339. Up to 687 conditions per place. [2021-06-10 15:04:27,228 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 444 selfloop transitions, 271 changer transitions 3/736 dead transitions. [2021-06-10 15:04:27,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 981 places, 736 transitions, 48770 flow [2021-06-10 15:04:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:27,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 15:04:27,229 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 15:04:27,229 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 15:04:27,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 15:04:27,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:27,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 15:04:27,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:27,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:27,230 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:27,230 INFO L185 Difference]: Start difference. First operand has 979 places, 730 transitions, 47260 flow. Second operand 8 states and 466 transitions. [2021-06-10 15:04:27,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 981 places, 736 transitions, 48770 flow [2021-06-10 15:04:29,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 975 places, 736 transitions, 48258 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-06-10 15:04:29,358 INFO L241 Difference]: Finished difference. Result has 976 places, 727 transitions, 47096 flow [2021-06-10 15:04:29,358 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46754, PETRI_DIFFERENCE_MINUEND_PLACES=968, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47096, PETRI_PLACES=976, PETRI_TRANSITIONS=727} [2021-06-10 15:04:29,358 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 932 predicate places. [2021-06-10 15:04:29,358 INFO L480 AbstractCegarLoop]: Abstraction has has 976 places, 727 transitions, 47096 flow [2021-06-10 15:04:29,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:29,358 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:29,358 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:29,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-06-10 15:04:29,359 INFO L428 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:29,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:29,359 INFO L82 PathProgramCache]: Analyzing trace with hash -526989889, now seen corresponding path program 318 times [2021-06-10 15:04:29,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:29,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513095581] [2021-06-10 15:04:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:29,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:29,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:29,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:29,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:29,385 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:29,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:29,399 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:04:29,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:04:29,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 15:04:29,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 15:04:29,441 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:04:29,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:04:29,459 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:29,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:29,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513095581] [2021-06-10 15:04:29,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:29,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:29,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953459017] [2021-06-10 15:04:29,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:29,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:29,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:29,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:29,478 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:29,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 976 places, 727 transitions, 47096 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:29,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:29,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:29,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:31,123 INFO L129 PetriNetUnfolder]: 10/3558 cut-off events. [2021-06-10 15:04:31,123 INFO L130 PetriNetUnfolder]: For 238403/238482 co-relation queries the response was YES. [2021-06-10 15:04:31,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33388 conditions, 3558 events. 10/3558 cut-off events. For 238403/238482 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 55769 event pairs, 2 based on Foata normal form. 9/3502 useless extension candidates. Maximal degree in co-relation 33186. Up to 687 conditions per place. [2021-06-10 15:04:31,161 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 454 selfloop transitions, 264 changer transitions 2/738 dead transitions. [2021-06-10 15:04:31,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 981 places, 738 transitions, 48832 flow [2021-06-10 15:04:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:04:31,162 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:04:31,162 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:04:31,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:04:31,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:31,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:04:31,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:31,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:31,163 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:31,163 INFO L185 Difference]: Start difference. First operand has 976 places, 727 transitions, 47096 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:04:31,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 981 places, 738 transitions, 48832 flow [2021-06-10 15:04:33,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 977 places, 738 transitions, 48315 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-06-10 15:04:33,306 INFO L241 Difference]: Finished difference. Result has 979 places, 729 transitions, 47212 flow [2021-06-10 15:04:33,307 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46587, PETRI_DIFFERENCE_MINUEND_PLACES=970, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47212, PETRI_PLACES=979, PETRI_TRANSITIONS=729} [2021-06-10 15:04:33,307 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 935 predicate places. [2021-06-10 15:04:33,307 INFO L480 AbstractCegarLoop]: Abstraction has has 979 places, 729 transitions, 47212 flow [2021-06-10 15:04:33,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:33,307 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:33,307 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:33,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-06-10 15:04:33,307 INFO L428 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:33,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:33,308 INFO L82 PathProgramCache]: Analyzing trace with hash 105747105, now seen corresponding path program 319 times [2021-06-10 15:04:33,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:33,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890047211] [2021-06-10 15:04:33,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:33,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:33,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:33,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:33,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:33,326 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:33,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:33,343 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:04:33,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:04:33,363 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-10 15:04:33,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 15:04:33,401 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:04:33,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:04:33,419 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:33,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:33,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890047211] [2021-06-10 15:04:33,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:33,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:33,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398891883] [2021-06-10 15:04:33,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:33,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:33,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:33,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:33,438 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:33,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 979 places, 729 transitions, 47212 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:33,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:33,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:33,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:35,188 INFO L129 PetriNetUnfolder]: 10/3548 cut-off events. [2021-06-10 15:04:35,189 INFO L130 PetriNetUnfolder]: For 238050/238125 co-relation queries the response was YES. [2021-06-10 15:04:35,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33326 conditions, 3548 events. 10/3548 cut-off events. For 238050/238125 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 55537 event pairs, 2 based on Foata normal form. 11/3494 useless extension candidates. Maximal degree in co-relation 33123. Up to 687 conditions per place. [2021-06-10 15:04:35,223 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 453 selfloop transitions, 262 changer transitions 3/736 dead transitions. [2021-06-10 15:04:35,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 985 places, 736 transitions, 48726 flow [2021-06-10 15:04:35,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:35,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:04:35,224 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:04:35,224 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:04:35,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:04:35,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:35,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:04:35,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:35,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:35,224 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:35,224 INFO L185 Difference]: Start difference. First operand has 979 places, 729 transitions, 47212 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:04:35,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 985 places, 736 transitions, 48726 flow [2021-06-10 15:04:37,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 981 places, 736 transitions, 48222 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-06-10 15:04:37,344 INFO L241 Difference]: Finished difference. Result has 982 places, 726 transitions, 47058 flow [2021-06-10 15:04:37,345 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46716, PETRI_DIFFERENCE_MINUEND_PLACES=974, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47058, PETRI_PLACES=982, PETRI_TRANSITIONS=726} [2021-06-10 15:04:37,345 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 938 predicate places. [2021-06-10 15:04:37,345 INFO L480 AbstractCegarLoop]: Abstraction has has 982 places, 726 transitions, 47058 flow [2021-06-10 15:04:37,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:37,345 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:37,345 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:37,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-06-10 15:04:37,345 INFO L428 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:37,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:37,346 INFO L82 PathProgramCache]: Analyzing trace with hash -280115657, now seen corresponding path program 320 times [2021-06-10 15:04:37,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:37,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268781203] [2021-06-10 15:04:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:37,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:37,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:37,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:37,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:37,357 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:37,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:37,369 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:04:37,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:04:37,386 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:04:37,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:04:37,409 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:04:37,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:04:37,428 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:37,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:37,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268781203] [2021-06-10 15:04:37,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:37,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:37,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599587561] [2021-06-10 15:04:37,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:37,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:37,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:37,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:37,447 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:37,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 982 places, 726 transitions, 47058 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:37,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:37,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:37,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:39,102 INFO L129 PetriNetUnfolder]: 10/3535 cut-off events. [2021-06-10 15:04:39,102 INFO L130 PetriNetUnfolder]: For 237314/237389 co-relation queries the response was YES. [2021-06-10 15:04:39,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33234 conditions, 3535 events. 10/3535 cut-off events. For 237314/237389 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 55284 event pairs, 2 based on Foata normal form. 11/3481 useless extension candidates. Maximal degree in co-relation 33031. Up to 687 conditions per place. [2021-06-10 15:04:39,142 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 452 selfloop transitions, 261 changer transitions 2/733 dead transitions. [2021-06-10 15:04:39,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 988 places, 733 transitions, 48566 flow [2021-06-10 15:04:39,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:39,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:04:39,143 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:04:39,143 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:04:39,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:04:39,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:39,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:04:39,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:39,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:39,144 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:39,144 INFO L185 Difference]: Start difference. First operand has 982 places, 726 transitions, 47058 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:04:39,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 988 places, 733 transitions, 48566 flow [2021-06-10 15:04:41,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 983 places, 733 transitions, 48040 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-06-10 15:04:41,344 INFO L241 Difference]: Finished difference. Result has 984 places, 724 transitions, 46928 flow [2021-06-10 15:04:41,344 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46540, PETRI_DIFFERENCE_MINUEND_PLACES=976, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46928, PETRI_PLACES=984, PETRI_TRANSITIONS=724} [2021-06-10 15:04:41,344 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 940 predicate places. [2021-06-10 15:04:41,344 INFO L480 AbstractCegarLoop]: Abstraction has has 984 places, 724 transitions, 46928 flow [2021-06-10 15:04:41,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:41,344 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:41,344 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:41,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-06-10 15:04:41,344 INFO L428 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:41,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:41,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1923772965, now seen corresponding path program 321 times [2021-06-10 15:04:41,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:41,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722722236] [2021-06-10 15:04:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:41,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:41,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:41,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:41,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:41,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:41,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:41,371 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:04:41,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:04:41,396 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:04:41,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:04:41,421 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:04:41,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:04:41,440 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:41,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:41,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722722236] [2021-06-10 15:04:41,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:41,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:41,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70138159] [2021-06-10 15:04:41,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:41,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:41,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:41,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:41,459 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:41,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 984 places, 724 transitions, 46928 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:41,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:41,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:41,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:43,147 INFO L129 PetriNetUnfolder]: 10/3524 cut-off events. [2021-06-10 15:04:43,147 INFO L130 PetriNetUnfolder]: For 236679/236754 co-relation queries the response was YES. [2021-06-10 15:04:43,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33152 conditions, 3524 events. 10/3524 cut-off events. For 236679/236754 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 55066 event pairs, 2 based on Foata normal form. 11/3470 useless extension candidates. Maximal degree in co-relation 32949. Up to 687 conditions per place. [2021-06-10 15:04:43,186 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 449 selfloop transitions, 261 changer transitions 3/731 dead transitions. [2021-06-10 15:04:43,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 990 places, 731 transitions, 48432 flow [2021-06-10 15:04:43,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 15:04:43,187 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-10 15:04:43,187 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 15:04:43,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 15:04:43,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:43,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 15:04:43,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:43,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:43,188 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:43,188 INFO L185 Difference]: Start difference. First operand has 984 places, 724 transitions, 46928 flow. Second operand 8 states and 466 transitions. [2021-06-10 15:04:43,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 990 places, 731 transitions, 48432 flow [2021-06-10 15:04:45,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 986 places, 731 transitions, 47918 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-06-10 15:04:45,384 INFO L241 Difference]: Finished difference. Result has 987 places, 721 transitions, 46748 flow [2021-06-10 15:04:45,384 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46422, PETRI_DIFFERENCE_MINUEND_PLACES=979, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46748, PETRI_PLACES=987, PETRI_TRANSITIONS=721} [2021-06-10 15:04:45,384 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 943 predicate places. [2021-06-10 15:04:45,384 INFO L480 AbstractCegarLoop]: Abstraction has has 987 places, 721 transitions, 46748 flow [2021-06-10 15:04:45,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:45,384 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:45,384 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:45,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-06-10 15:04:45,385 INFO L428 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:45,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:45,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1553049365, now seen corresponding path program 322 times [2021-06-10 15:04:45,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:45,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599141008] [2021-06-10 15:04:45,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:45,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:45,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:45,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:45,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:45,396 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:45,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:45,409 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:04:45,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:04:45,427 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:04:45,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:04:45,441 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:04:45,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:04:45,461 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:45,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:45,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599141008] [2021-06-10 15:04:45,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:45,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:45,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857619504] [2021-06-10 15:04:45,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:45,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:45,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:45,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:45,480 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:45,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 987 places, 721 transitions, 46748 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:45,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:45,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:45,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:47,066 INFO L129 PetriNetUnfolder]: 10/3511 cut-off events. [2021-06-10 15:04:47,066 INFO L130 PetriNetUnfolder]: For 235558/235627 co-relation queries the response was YES. [2021-06-10 15:04:47,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33044 conditions, 3511 events. 10/3511 cut-off events. For 235558/235627 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 54853 event pairs, 2 based on Foata normal form. 9/3455 useless extension candidates. Maximal degree in co-relation 32841. Up to 687 conditions per place. [2021-06-10 15:04:47,105 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 452 selfloop transitions, 252 changer transitions 4/726 dead transitions. [2021-06-10 15:04:47,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 991 places, 726 transitions, 48234 flow [2021-06-10 15:04:47,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 464 transitions. [2021-06-10 15:04:47,108 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2021-06-10 15:04:47,108 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 464 transitions. [2021-06-10 15:04:47,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 464 transitions. [2021-06-10 15:04:47,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:47,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 464 transitions. [2021-06-10 15:04:47,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:47,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:47,109 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:47,109 INFO L185 Difference]: Start difference. First operand has 987 places, 721 transitions, 46748 flow. Second operand 8 states and 464 transitions. [2021-06-10 15:04:47,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 991 places, 726 transitions, 48234 flow [2021-06-10 15:04:49,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 988 places, 726 transitions, 47969 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-06-10 15:04:49,324 INFO L241 Difference]: Finished difference. Result has 989 places, 717 transitions, 46784 flow [2021-06-10 15:04:49,325 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46487, PETRI_DIFFERENCE_MINUEND_PLACES=981, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46784, PETRI_PLACES=989, PETRI_TRANSITIONS=717} [2021-06-10 15:04:49,325 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 945 predicate places. [2021-06-10 15:04:49,325 INFO L480 AbstractCegarLoop]: Abstraction has has 989 places, 717 transitions, 46784 flow [2021-06-10 15:04:49,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:49,325 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:49,325 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:49,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-06-10 15:04:49,325 INFO L428 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:49,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:49,325 INFO L82 PathProgramCache]: Analyzing trace with hash 921847943, now seen corresponding path program 323 times [2021-06-10 15:04:49,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:49,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569087507] [2021-06-10 15:04:49,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:49,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:49,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:49,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:49,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:49,336 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 15:04:49,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 15:04:49,343 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:49,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:49,353 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:04:49,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:04:49,376 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:04:49,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:04:49,395 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:49,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:49,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569087507] [2021-06-10 15:04:49,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:49,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:49,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221386248] [2021-06-10 15:04:49,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:49,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:49,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:49,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:49,414 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:49,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 989 places, 717 transitions, 46784 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:49,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:49,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:49,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:51,337 INFO L129 PetriNetUnfolder]: 6/3946 cut-off events. [2021-06-10 15:04:51,337 INFO L130 PetriNetUnfolder]: For 263787/263838 co-relation queries the response was YES. [2021-06-10 15:04:51,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36767 conditions, 3946 events. 6/3946 cut-off events. For 263787/263838 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 63192 event pairs, 1 based on Foata normal form. 1/3878 useless extension candidates. Maximal degree in co-relation 36564. Up to 612 conditions per place. [2021-06-10 15:04:51,377 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 550 selfloop transitions, 265 changer transitions 2/835 dead transitions. [2021-06-10 15:04:51,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 991 places, 835 transitions, 55162 flow [2021-06-10 15:04:51,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:51,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:04:51,378 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:04:51,378 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:04:51,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:04:51,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:51,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:04:51,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:51,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:51,379 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:51,379 INFO L185 Difference]: Start difference. First operand has 989 places, 717 transitions, 46784 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:04:51,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 991 places, 835 transitions, 55162 flow [2021-06-10 15:04:53,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 985 places, 835 transitions, 54617 flow, removed 25 selfloop flow, removed 6 redundant places. [2021-06-10 15:04:53,767 INFO L241 Difference]: Finished difference. Result has 991 places, 770 transitions, 50517 flow [2021-06-10 15:04:53,768 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=46321, PETRI_DIFFERENCE_MINUEND_PLACES=978, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=50517, PETRI_PLACES=991, PETRI_TRANSITIONS=770} [2021-06-10 15:04:53,768 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 947 predicate places. [2021-06-10 15:04:53,768 INFO L480 AbstractCegarLoop]: Abstraction has has 991 places, 770 transitions, 50517 flow [2021-06-10 15:04:53,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:53,768 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:53,768 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:53,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-06-10 15:04:53,768 INFO L428 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:53,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:53,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1546836535, now seen corresponding path program 324 times [2021-06-10 15:04:53,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:53,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783516738] [2021-06-10 15:04:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:53,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:53,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:53,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:53,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:53,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:53,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:04:53,786 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:53,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:53,796 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:04:53,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:04:53,819 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:04:53,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:04:53,837 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:53,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:53,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783516738] [2021-06-10 15:04:53,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:53,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:53,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371581336] [2021-06-10 15:04:53,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:53,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:53,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:53,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:53,872 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:53,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 991 places, 770 transitions, 50517 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:53,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:53,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:53,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:04:56,086 INFO L129 PetriNetUnfolder]: 2/4338 cut-off events. [2021-06-10 15:04:56,086 INFO L130 PetriNetUnfolder]: For 295974/296032 co-relation queries the response was YES. [2021-06-10 15:04:56,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40655 conditions, 4338 events. 2/4338 cut-off events. For 295974/296032 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 70769 event pairs, 2 based on Foata normal form. 3/4271 useless extension candidates. Maximal degree in co-relation 40450. Up to 551 conditions per place. [2021-06-10 15:04:56,126 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 529 selfloop transitions, 339 changer transitions 3/889 dead transitions. [2021-06-10 15:04:56,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 997 places, 889 transitions, 59389 flow [2021-06-10 15:04:56,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:04:56,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:04:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:04:56,127 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:04:56,127 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:04:56,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:04:56,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:04:56,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:04:56,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:56,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:56,128 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:56,128 INFO L185 Difference]: Start difference. First operand has 991 places, 770 transitions, 50517 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:04:56,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 997 places, 889 transitions, 59389 flow [2021-06-10 15:04:58,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 994 places, 889 transitions, 59165 flow, removed 52 selfloop flow, removed 3 redundant places. [2021-06-10 15:04:58,836 INFO L241 Difference]: Finished difference. Result has 1000 places, 816 transitions, 54505 flow [2021-06-10 15:04:58,837 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=50337, PETRI_DIFFERENCE_MINUEND_PLACES=987, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=54505, PETRI_PLACES=1000, PETRI_TRANSITIONS=816} [2021-06-10 15:04:58,837 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 956 predicate places. [2021-06-10 15:04:58,837 INFO L480 AbstractCegarLoop]: Abstraction has has 1000 places, 816 transitions, 54505 flow [2021-06-10 15:04:58,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:58,837 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:04:58,837 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:04:58,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-06-10 15:04:58,837 INFO L428 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:04:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:04:58,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1669501773, now seen corresponding path program 325 times [2021-06-10 15:04:58,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:04:58,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106666335] [2021-06-10 15:04:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:04:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:04:58,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:58,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:04:58,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:58,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:04:58,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:04:58,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:04:58,855 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 15:04:58,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 15:04:58,866 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:04:58,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:04:58,890 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:04:58,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:04:58,908 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:04:58,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:04:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:04:58,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106666335] [2021-06-10 15:04:58,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:04:58,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:04:58,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573778908] [2021-06-10 15:04:58,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:04:58,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:04:58,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:04:58,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:04:58,927 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:04:58,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1000 places, 816 transitions, 54505 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:04:58,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:04:58,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:04:58,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:05:01,176 INFO L129 PetriNetUnfolder]: 2/4325 cut-off events. [2021-06-10 15:05:01,176 INFO L130 PetriNetUnfolder]: For 308782/308845 co-relation queries the response was YES. [2021-06-10 15:05:01,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41195 conditions, 4325 events. 2/4325 cut-off events. For 308782/308845 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 70474 event pairs, 0 based on Foata normal form. 5/4261 useless extension candidates. Maximal degree in co-relation 40986. Up to 789 conditions per place. [2021-06-10 15:05:01,217 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 563 selfloop transitions, 315 changer transitions 2/898 dead transitions. [2021-06-10 15:05:01,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1006 places, 898 transitions, 61095 flow [2021-06-10 15:05:01,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:05:01,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:05:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:05:01,218 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:05:01,218 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:05:01,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:05:01,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:05:01,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:05:01,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:01,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:01,218 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:01,218 INFO L185 Difference]: Start difference. First operand has 1000 places, 816 transitions, 54505 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:05:01,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1006 places, 898 transitions, 61095 flow [2021-06-10 15:05:04,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 999 places, 898 transitions, 60671 flow, removed 90 selfloop flow, removed 7 redundant places. [2021-06-10 15:05:04,118 INFO L241 Difference]: Finished difference. Result has 1005 places, 835 transitions, 56247 flow [2021-06-10 15:05:04,119 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=54119, PETRI_DIFFERENCE_MINUEND_PLACES=992, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=56247, PETRI_PLACES=1005, PETRI_TRANSITIONS=835} [2021-06-10 15:05:04,119 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 961 predicate places. [2021-06-10 15:05:04,119 INFO L480 AbstractCegarLoop]: Abstraction has has 1005 places, 835 transitions, 56247 flow [2021-06-10 15:05:04,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:04,119 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:05:04,119 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:05:04,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-06-10 15:05:04,119 INFO L428 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:05:04,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:05:04,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2008863055, now seen corresponding path program 326 times [2021-06-10 15:05:04,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:05:04,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100040497] [2021-06-10 15:05:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:05:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:05:04,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:05:04,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:05:04,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:05:04,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:05:04,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:05:04,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:05:04,152 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:05:04,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:05:04,169 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:05:04,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:05:04,190 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:05:04,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:05:04,211 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:05:04,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:05:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:05:04,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100040497] [2021-06-10 15:05:04,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:05:04,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:05:04,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217303208] [2021-06-10 15:05:04,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:05:04,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:05:04,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:05:04,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:05:04,233 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:05:04,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1005 places, 835 transitions, 56247 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:04,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:05:04,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:05:04,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:05:06,602 INFO L129 PetriNetUnfolder]: 2/4314 cut-off events. [2021-06-10 15:05:06,602 INFO L130 PetriNetUnfolder]: For 318122/318196 co-relation queries the response was YES. [2021-06-10 15:05:06,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41421 conditions, 4314 events. 2/4314 cut-off events. For 318122/318196 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 70282 event pairs, 0 based on Foata normal form. 8/4253 useless extension candidates. Maximal degree in co-relation 41211. Up to 789 conditions per place. [2021-06-10 15:05:06,648 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 540 selfloop transitions, 329 changer transitions 2/889 dead transitions. [2021-06-10 15:05:06,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1011 places, 889 transitions, 61273 flow [2021-06-10 15:05:06,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:05:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:05:06,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:05:06,649 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:05:06,649 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:05:06,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:05:06,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:05:06,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:05:06,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:06,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:06,650 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:06,650 INFO L185 Difference]: Start difference. First operand has 1005 places, 835 transitions, 56247 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:05:06,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1011 places, 889 transitions, 61273 flow [2021-06-10 15:05:09,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1003 places, 889 transitions, 60211 flow, removed 76 selfloop flow, removed 8 redundant places. [2021-06-10 15:05:09,530 INFO L241 Difference]: Finished difference. Result has 1007 places, 862 transitions, 58142 flow [2021-06-10 15:05:09,530 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=55236, PETRI_DIFFERENCE_MINUEND_PLACES=996, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=58142, PETRI_PLACES=1007, PETRI_TRANSITIONS=862} [2021-06-10 15:05:09,530 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 963 predicate places. [2021-06-10 15:05:09,530 INFO L480 AbstractCegarLoop]: Abstraction has has 1007 places, 862 transitions, 58142 flow [2021-06-10 15:05:09,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:09,531 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:05:09,531 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:05:09,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-06-10 15:05:09,531 INFO L428 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:05:09,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:05:09,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1316334307, now seen corresponding path program 327 times [2021-06-10 15:05:09,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:05:09,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158058452] [2021-06-10 15:05:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:05:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:05:09,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:05:09,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:05:09,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:05:09,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:05:09,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:05:09,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:05:09,549 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:05:09,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:05:09,569 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:05:09,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:05:09,590 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:05:09,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:05:09,610 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:05:09,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:05:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:05:09,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158058452] [2021-06-10 15:05:09,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:05:09,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:05:09,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331965761] [2021-06-10 15:05:09,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:05:09,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:05:09,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:05:09,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:05:09,629 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:05:09,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1007 places, 862 transitions, 58142 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:09,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:05:09,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:05:09,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:05:12,020 INFO L129 PetriNetUnfolder]: 2/4303 cut-off events. [2021-06-10 15:05:12,020 INFO L130 PetriNetUnfolder]: For 319189/319263 co-relation queries the response was YES. [2021-06-10 15:05:12,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41169 conditions, 4303 events. 2/4303 cut-off events. For 319189/319263 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 70015 event pairs, 0 based on Foata normal form. 8/4242 useless extension candidates. Maximal degree in co-relation 40957. Up to 789 conditions per place. [2021-06-10 15:05:12,062 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 540 selfloop transitions, 326 changer transitions 3/887 dead transitions. [2021-06-10 15:05:12,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 887 transitions, 60988 flow [2021-06-10 15:05:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:05:12,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:05:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:05:12,063 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:05:12,063 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:05:12,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:05:12,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:05:12,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:05:12,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:12,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:12,064 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:12,064 INFO L185 Difference]: Start difference. First operand has 1007 places, 862 transitions, 58142 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:05:12,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 887 transitions, 60988 flow [2021-06-10 15:05:14,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1011 places, 887 transitions, 60726 flow, removed 39 selfloop flow, removed 2 redundant places. [2021-06-10 15:05:14,935 INFO L241 Difference]: Finished difference. Result has 1012 places, 859 transitions, 58344 flow [2021-06-10 15:05:14,935 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=57888, PETRI_DIFFERENCE_MINUEND_PLACES=1004, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=862, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=58344, PETRI_PLACES=1012, PETRI_TRANSITIONS=859} [2021-06-10 15:05:14,936 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 968 predicate places. [2021-06-10 15:05:14,936 INFO L480 AbstractCegarLoop]: Abstraction has has 1012 places, 859 transitions, 58344 flow [2021-06-10 15:05:14,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:14,936 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:05:14,936 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:05:14,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-06-10 15:05:14,936 INFO L428 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:05:14,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:05:14,936 INFO L82 PathProgramCache]: Analyzing trace with hash 264331071, now seen corresponding path program 328 times [2021-06-10 15:05:14,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:05:14,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319216245] [2021-06-10 15:05:14,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:05:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:05:14,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:05:14,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:05:14,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:05:14,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:05:14,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:05:14,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:05:14,954 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 15:05:14,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 15:05:14,973 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 15:05:14,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 15:05:14,996 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-10 15:05:14,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 15:05:15,021 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:05:15,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:05:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:05:15,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319216245] [2021-06-10 15:05:15,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:05:15,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:05:15,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430781827] [2021-06-10 15:05:15,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:05:15,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:05:15,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:05:15,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:05:15,041 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:05:15,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1012 places, 859 transitions, 58344 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:15,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:05:15,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:05:15,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:05:17,475 INFO L129 PetriNetUnfolder]: 2/4290 cut-off events. [2021-06-10 15:05:17,475 INFO L130 PetriNetUnfolder]: For 320098/320172 co-relation queries the response was YES. [2021-06-10 15:05:17,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41360 conditions, 4290 events. 2/4290 cut-off events. For 320098/320172 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 69780 event pairs, 0 based on Foata normal form. 8/4229 useless extension candidates. Maximal degree in co-relation 41148. Up to 789 conditions per place. [2021-06-10 15:05:17,518 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 536 selfloop transitions, 328 changer transitions 2/884 dead transitions. [2021-06-10 15:05:17,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1018 places, 884 transitions, 61184 flow [2021-06-10 15:05:17,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:05:17,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:05:17,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:05:17,519 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:05:17,519 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:05:17,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:05:17,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:05:17,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:05:17,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:17,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:17,519 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:17,519 INFO L185 Difference]: Start difference. First operand has 1012 places, 859 transitions, 58344 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:05:17,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1018 places, 884 transitions, 61184 flow [2021-06-10 15:05:20,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1013 places, 884 transitions, 60538 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 15:05:20,499 INFO L241 Difference]: Finished difference. Result has 1014 places, 857 transitions, 58212 flow [2021-06-10 15:05:20,500 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=57706, PETRI_DIFFERENCE_MINUEND_PLACES=1006, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=859, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=58212, PETRI_PLACES=1014, PETRI_TRANSITIONS=857} [2021-06-10 15:05:20,500 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 970 predicate places. [2021-06-10 15:05:20,500 INFO L480 AbstractCegarLoop]: Abstraction has has 1014 places, 857 transitions, 58212 flow [2021-06-10 15:05:20,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:20,500 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 15:05:20,500 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 15:05:20,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-06-10 15:05:20,500 INFO L428 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 15:05:20,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 15:05:20,500 INFO L82 PathProgramCache]: Analyzing trace with hash -876956451, now seen corresponding path program 329 times [2021-06-10 15:05:20,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 15:05:20,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866473827] [2021-06-10 15:05:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 15:05:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 15:05:20,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:05:20,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 15:05:20,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:05:20,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 15:05:20,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 15:05:20,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 15:05:20,520 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 15:05:20,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 15:05:20,538 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 15:05:20,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 15:05:20,552 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 15:05:20,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 15:05:20,569 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-06-10 15:05:20,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 15:05:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 15:05:20,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866473827] [2021-06-10 15:05:20,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 15:05:20,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 15:05:20,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637024826] [2021-06-10 15:05:20,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 15:05:20,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 15:05:20,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 15:05:20,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-10 15:05:20,589 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 63 [2021-06-10 15:05:20,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1014 places, 857 transitions, 58212 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:20,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 15:05:20,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 63 [2021-06-10 15:05:20,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 15:05:22,924 INFO L129 PetriNetUnfolder]: 2/4279 cut-off events. [2021-06-10 15:05:22,924 INFO L130 PetriNetUnfolder]: For 319611/319688 co-relation queries the response was YES. [2021-06-10 15:05:22,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41279 conditions, 4279 events. 2/4279 cut-off events. For 319611/319688 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 69576 event pairs, 0 based on Foata normal form. 9/4219 useless extension candidates. Maximal degree in co-relation 41067. Up to 789 conditions per place. [2021-06-10 15:05:22,967 INFO L132 encePairwiseOnDemand]: 56/63 looper letters, 561 selfloop transitions, 301 changer transitions 2/882 dead transitions. [2021-06-10 15:05:22,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1020 places, 882 transitions, 61048 flow [2021-06-10 15:05:22,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 15:05:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 15:05:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-06-10 15:05:22,969 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9265873015873016 [2021-06-10 15:05:22,969 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-06-10 15:05:22,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-06-10 15:05:22,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 15:05:22,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-06-10 15:05:22,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:22,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:22,970 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 15:05:22,970 INFO L185 Difference]: Start difference. First operand has 1014 places, 857 transitions, 58212 flow. Second operand 8 states and 467 transitions. [2021-06-10 15:05:22,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1020 places, 882 transitions, 61048 flow Received shutdown request... [2021-06-10 15:05:24,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-06-10 15:05:24,444 WARN L545 AbstractCegarLoop]: Verification canceled [2021-06-10 15:05:24,447 WARN L224 ceAbstractionStarter]: Timeout [2021-06-10 15:05:24,447 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 03:05:24 BasicIcfg [2021-06-10 15:05:24,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 15:05:24,447 INFO L168 Benchmark]: Toolchain (without parser) took 856021.62 ms. Allocated memory was 354.4 MB in the beginning and 2.4 GB in the end (delta: 2.0 GB). Free memory was 333.9 MB in the beginning and 1.7 GB in the end (delta: -1.4 GB). Peak memory consumption was 649.4 MB. Max. memory is 16.0 GB. [2021-06-10 15:05:24,447 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 354.4 MB. Free memory is still 334.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 15:05:24,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.77 ms. Allocated memory is still 354.4 MB. Free memory was 333.9 MB in the beginning and 332.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 15:05:24,448 INFO L168 Benchmark]: Boogie Preprocessor took 12.22 ms. Allocated memory is still 354.4 MB. Free memory was 332.4 MB in the beginning and 331.5 MB in the end (delta: 891.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 15:05:24,448 INFO L168 Benchmark]: RCFGBuilder took 201.14 ms. Allocated memory is still 354.4 MB. Free memory was 331.4 MB in the beginning and 321.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-10 15:05:24,448 INFO L168 Benchmark]: TraceAbstraction took 855783.46 ms. Allocated memory was 354.4 MB in the beginning and 2.4 GB in the end (delta: 2.0 GB). Free memory was 320.7 MB in the beginning and 1.7 GB in the end (delta: -1.4 GB). Peak memory consumption was 634.7 MB. Max. memory is 16.0 GB. [2021-06-10 15:05:24,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 354.4 MB. Free memory is still 334.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.77 ms. Allocated memory is still 354.4 MB. Free memory was 333.9 MB in the beginning and 332.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.22 ms. Allocated memory is still 354.4 MB. Free memory was 332.4 MB in the beginning and 331.5 MB in the end (delta: 891.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 201.14 ms. Allocated memory is still 354.4 MB. Free memory was 331.4 MB in the beginning and 321.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 855783.46 ms. Allocated memory was 354.4 MB in the beginning and 2.4 GB in the end (delta: 2.0 GB). Free memory was 320.7 MB in the beginning and 1.7 GB in the end (delta: -1.4 GB). Peak memory consumption was 634.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 25). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 44.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 855592.5ms, OverallIterations: 334, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 824686.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 93.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5847 SDtfs, 8414 SDslu, 5202 SDs, 0 SdLazy, 10044 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6652.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2647 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 2308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1316 ImplicationChecksByTransitivity, 33243.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=58344occurred in iteration=332, InterpolantAutomatonStates: 2639, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 95.1ms SsaConstructionTime, 217.6ms SatisfiabilityAnalysisTime, 29532.8ms InterpolantComputationTime, 8350 NumberOfCodeBlocks, 8350 NumberOfCodeBlocksAsserted, 334 NumberOfCheckSat, 8016 ConstructedInterpolants, 0 QuantifiedInterpolants, 217932 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 334 InterpolantComputations, 334 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown