/usr/bin/java -Xmx8000000000 -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-OGIterative-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 12:51:28,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 12:51:28,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 12:51:28,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 12:51:28,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 12:51:28,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 12:51:28,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 12:51:28,427 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-OGIterative-Hitting.epf [2021-08-13 12:51:28,449 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 12:51:28,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 12:51:28,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 12:51:28,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 12:51:28,450 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 12:51:28,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 12:51:28,451 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 12:51:28,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 12:51:28,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 12:51:28,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 12:51:28,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 12:51:28,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 12:51:28,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 12:51:28,451 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 12:51:28,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 12:51:28,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 12:51:28,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 12:51:28,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 12:51:28,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 12:51:28,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 12:51:28,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 12:51:28,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 12:51:28,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 12:51:28,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 12:51:28,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 12:51:28,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 12:51:28,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 12:51:28,453 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 12:51:28,453 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 12:51:28,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 12:51:28,453 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 12:51:28,453 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 12:51:28,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 12:51:28,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 12:51:28,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 12:51:28,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 12:51:28,685 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 12:51:28,686 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 12:51:28,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2021-08-13 12:51:28,687 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2021-08-13 12:51:28,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 12:51:28,704 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 12:51:28,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 12:51:28,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 12:51:28,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 12:51:28,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:28" (1/1) ... [2021-08-13 12:51:28,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:28" (1/1) ... [2021-08-13 12:51:28,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 12:51:28,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 12:51:28,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 12:51:28,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 12:51:28,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:28" (1/1) ... [2021-08-13 12:51:28,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:28" (1/1) ... [2021-08-13 12:51:28,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:28" (1/1) ... [2021-08-13 12:51:28,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:28" (1/1) ... [2021-08-13 12:51:28,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:28" (1/1) ... [2021-08-13 12:51:28,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:28" (1/1) ... [2021-08-13 12:51:28,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:28" (1/1) ... [2021-08-13 12:51:28,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 12:51:28,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 12:51:28,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 12:51:28,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 12:51:28,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:28" (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 [2021-08-13 12:51:28,801 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-08-13 12:51:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-08-13 12:51:28,801 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-08-13 12:51:28,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-08-13 12:51:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-08-13 12:51:28,802 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-08-13 12:51:28,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-08-13 12:51:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-08-13 12:51:28,802 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-08-13 12:51:28,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-08-13 12:51:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-08-13 12:51:28,802 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-08-13 12:51:28,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-08-13 12:51:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-08-13 12:51:28,803 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-08-13 12:51:28,803 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 12:51:28,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 12:51:28,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 12:51:28,803 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 12:51:28,908 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 12:51:28,908 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 12:51:28,909 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:51:28 BoogieIcfgContainer [2021-08-13 12:51:28,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 12:51:28,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 12:51:28,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 12:51:28,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 12:51:28,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:51:28" (1/2) ... [2021-08-13 12:51:28,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1161a182 and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:51:28, skipping insertion in model container [2021-08-13 12:51:28,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:51:28" (2/2) ... [2021-08-13 12:51:28,915 INFO L111 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2021-08-13 12:51:28,918 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 12:51:28,918 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 12:51:28,919 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 12:51:28,972 INFO L149 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2021-08-13 12:51:28,988 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-13 12:51:29,002 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 12:51:29,003 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 12:51:29,003 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 12:51:29,003 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 12:51:29,003 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 12:51:29,003 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 12:51:29,003 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 12:51:29,003 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 12:51:29,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions, 196 flow [2021-08-13 12:51:29,070 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2021-08-13 12:51:29,070 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2021-08-13 12:51:29,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 98 events. 49/98 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 331 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2021-08-13 12:51:29,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 48 transitions, 196 flow [2021-08-13 12:51:29,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 41 transitions, 172 flow [2021-08-13 12:51:29,120 INFO L129 PetriNetUnfolder]: 49/95 cut-off events. [2021-08-13 12:51:29,120 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2021-08-13 12:51:29,121 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:29,121 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:29,122 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:29,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:29,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1097768696, now seen corresponding path program 1 times [2021-08-13 12:51:29,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:29,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198073696] [2021-08-13 12:51:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:29,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:29,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:51:29,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:29,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:29,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198073696] [2021-08-13 12:51:29,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198073696] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:29,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:29,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:51:29,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216988263] [2021-08-13 12:51:29,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:51:29,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:29,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:51:29,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:51:29,282 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 48 [2021-08-13 12:51:29,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:29,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 48 [2021-08-13 12:51:29,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:29,341 INFO L129 PetriNetUnfolder]: 33/75 cut-off events. [2021-08-13 12:51:29,342 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2021-08-13 12:51:29,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 75 events. 33/75 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 192 event pairs, 0 based on Foata normal form. 5/80 useless extension candidates. Maximal degree in co-relation 80. Up to 20 conditions per place. [2021-08-13 12:51:29,344 INFO L132 encePairwiseOnDemand]: 45/48 looper letters, 3 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2021-08-13 12:51:29,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 170 flow [2021-08-13 12:51:29,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:51:29,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:51:29,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2021-08-13 12:51:29,356 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-08-13 12:51:29,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 132 transitions. [2021-08-13 12:51:29,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 132 transitions. [2021-08-13 12:51:29,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:29,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 132 transitions. [2021-08-13 12:51:29,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,364 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2021-08-13 12:51:29,364 INFO L482 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 170 flow [2021-08-13 12:51:29,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,365 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:29,365 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:29,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 12:51:29,365 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:29,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:29,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1642039334, now seen corresponding path program 1 times [2021-08-13 12:51:29,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:29,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000538739] [2021-08-13 12:51:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:29,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:29,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:51:29,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:29,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:29,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000538739] [2021-08-13 12:51:29,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000538739] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:29,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:29,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:51:29,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53751820] [2021-08-13 12:51:29,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:51:29,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:29,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:51:29,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:51:29,392 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 48 [2021-08-13 12:51:29,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:29,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 48 [2021-08-13 12:51:29,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:29,409 INFO L129 PetriNetUnfolder]: 8/36 cut-off events. [2021-08-13 12:51:29,409 INFO L130 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2021-08-13 12:51:29,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 36 events. 8/36 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 11/47 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2021-08-13 12:51:29,411 INFO L132 encePairwiseOnDemand]: 43/48 looper letters, 1 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2021-08-13 12:51:29,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 132 flow [2021-08-13 12:51:29,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:51:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:51:29,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2021-08-13 12:51:29,417 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-08-13 12:51:29,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 132 transitions. [2021-08-13 12:51:29,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 132 transitions. [2021-08-13 12:51:29,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:29,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 132 transitions. [2021-08-13 12:51:29,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,424 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2021-08-13 12:51:29,424 INFO L482 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 132 flow [2021-08-13 12:51:29,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,425 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:29,425 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:29,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 12:51:29,426 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:29,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:29,428 INFO L82 PathProgramCache]: Analyzing trace with hash 171380984, now seen corresponding path program 1 times [2021-08-13 12:51:29,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:29,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842636044] [2021-08-13 12:51:29,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:29,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:29,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:29,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:29,560 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:29,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:29,586 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:29,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:29,619 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:29,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:29,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:29,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842636044] [2021-08-13 12:51:29,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842636044] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:29,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:29,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:29,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594091711] [2021-08-13 12:51:29,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:29,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:29,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:29,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:29,649 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:29,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 132 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:29,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:29,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:29,773 INFO L129 PetriNetUnfolder]: 138/366 cut-off events. [2021-08-13 12:51:29,774 INFO L130 PetriNetUnfolder]: For 294/294 co-relation queries the response was YES. [2021-08-13 12:51:29,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 366 events. 138/366 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2308 event pairs, 17 based on Foata normal form. 1/346 useless extension candidates. Maximal degree in co-relation 692. Up to 78 conditions per place. [2021-08-13 12:51:29,779 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 14 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2021-08-13 12:51:29,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 196 flow [2021-08-13 12:51:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:29,782 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:29,782 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:29,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:29,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:29,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:29,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,785 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,786 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2021-08-13 12:51:29,786 INFO L482 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 196 flow [2021-08-13 12:51:29,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,786 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:29,786 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:29,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 12:51:29,787 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:29,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:29,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1083991818, now seen corresponding path program 1 times [2021-08-13 12:51:29,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:29,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206051986] [2021-08-13 12:51:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:29,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:29,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:51:29,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:29,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:29,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206051986] [2021-08-13 12:51:29,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206051986] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:29,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:29,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:51:29,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167403379] [2021-08-13 12:51:29,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:51:29,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:29,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:51:29,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:51:29,829 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 48 [2021-08-13 12:51:29,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:29,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 48 [2021-08-13 12:51:29,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:29,849 INFO L129 PetriNetUnfolder]: 62/216 cut-off events. [2021-08-13 12:51:29,849 INFO L130 PetriNetUnfolder]: For 274/274 co-relation queries the response was YES. [2021-08-13 12:51:29,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 216 events. 62/216 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1252 event pairs, 17 based on Foata normal form. 51/254 useless extension candidates. Maximal degree in co-relation 374. Up to 41 conditions per place. [2021-08-13 12:51:29,852 INFO L132 encePairwiseOnDemand]: 44/48 looper letters, 1 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2021-08-13 12:51:29,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 36 transitions, 158 flow [2021-08-13 12:51:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:51:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:51:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2021-08-13 12:51:29,853 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9097222222222222 [2021-08-13 12:51:29,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 131 transitions. [2021-08-13 12:51:29,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 131 transitions. [2021-08-13 12:51:29,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:29,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 131 transitions. [2021-08-13 12:51:29,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,855 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2021-08-13 12:51:29,855 INFO L482 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 158 flow [2021-08-13 12:51:29,855 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:29,855 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:29,855 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:29,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 12:51:29,855 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:29,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:29,856 INFO L82 PathProgramCache]: Analyzing trace with hash 523901692, now seen corresponding path program 2 times [2021-08-13 12:51:29,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:29,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304468859] [2021-08-13 12:51:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:29,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:29,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:29,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:29,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:29,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:29,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:29,970 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:29,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:29,998 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:30,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:30,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:30,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304468859] [2021-08-13 12:51:30,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304468859] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:30,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:30,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:30,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872573064] [2021-08-13 12:51:30,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:30,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:30,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:30,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:30,021 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:30,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:30,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:30,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:30,124 INFO L129 PetriNetUnfolder]: 69/305 cut-off events. [2021-08-13 12:51:30,125 INFO L130 PetriNetUnfolder]: For 211/281 co-relation queries the response was YES. [2021-08-13 12:51:30,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 305 events. 69/305 cut-off events. For 211/281 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2046 event pairs, 5 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 634. Up to 56 conditions per place. [2021-08-13 12:51:30,127 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 33 selfloop transitions, 14 changer transitions 0/64 dead transitions. [2021-08-13 12:51:30,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 64 transitions, 364 flow [2021-08-13 12:51:30,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:30,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:30,129 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:30,129 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:30,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,131 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,131 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2021-08-13 12:51:30,131 INFO L482 AbstractCegarLoop]: Abstraction has has 55 places, 64 transitions, 364 flow [2021-08-13 12:51:30,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,131 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:30,131 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:30,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 12:51:30,132 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:30,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:30,132 INFO L82 PathProgramCache]: Analyzing trace with hash 364037284, now seen corresponding path program 3 times [2021-08-13 12:51:30,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:30,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668140261] [2021-08-13 12:51:30,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:30,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:30,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:30,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:30,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:30,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:30,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:30,200 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:30,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:30,214 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:30,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:30,241 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:30,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:30,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:30,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668140261] [2021-08-13 12:51:30,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668140261] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:30,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:30,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:30,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888881292] [2021-08-13 12:51:30,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:30,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:30,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:30,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:30,260 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:30,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 64 transitions, 364 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:30,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:30,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:30,338 INFO L129 PetriNetUnfolder]: 69/414 cut-off events. [2021-08-13 12:51:30,339 INFO L130 PetriNetUnfolder]: For 395/515 co-relation queries the response was YES. [2021-08-13 12:51:30,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 414 events. 69/414 cut-off events. For 395/515 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3338 event pairs, 1 based on Foata normal form. 1/398 useless extension candidates. Maximal degree in co-relation 975. Up to 78 conditions per place. [2021-08-13 12:51:30,344 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 69 selfloop transitions, 31 changer transitions 0/117 dead transitions. [2021-08-13 12:51:30,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 117 transitions, 882 flow [2021-08-13 12:51:30,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:30,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:30,345 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:30,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:30,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,347 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2021-08-13 12:51:30,347 INFO L482 AbstractCegarLoop]: Abstraction has has 61 places, 117 transitions, 882 flow [2021-08-13 12:51:30,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,347 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:30,347 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:30,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 12:51:30,347 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:30,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:30,348 INFO L82 PathProgramCache]: Analyzing trace with hash 693585500, now seen corresponding path program 4 times [2021-08-13 12:51:30,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:30,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379020823] [2021-08-13 12:51:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:30,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:30,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:30,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:30,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:30,383 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:30,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:30,391 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:30,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:30,405 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:30,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:30,425 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:30,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:30,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:30,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379020823] [2021-08-13 12:51:30,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379020823] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:30,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:30,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:30,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135962040] [2021-08-13 12:51:30,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:30,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:30,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:30,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:30,443 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:30,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 117 transitions, 882 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:30,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:30,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:30,520 INFO L129 PetriNetUnfolder]: 72/460 cut-off events. [2021-08-13 12:51:30,520 INFO L130 PetriNetUnfolder]: For 575/821 co-relation queries the response was YES. [2021-08-13 12:51:30,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1462 conditions, 460 events. 72/460 cut-off events. For 575/821 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3882 event pairs, 0 based on Foata normal form. 2/445 useless extension candidates. Maximal degree in co-relation 1235. Up to 90 conditions per place. [2021-08-13 12:51:30,524 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 103 selfloop transitions, 48 changer transitions 0/168 dead transitions. [2021-08-13 12:51:30,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 168 transitions, 1592 flow [2021-08-13 12:51:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:30,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:30,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:30,525 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:30,525 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:30,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,527 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,527 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 30 predicate places. [2021-08-13 12:51:30,527 INFO L482 AbstractCegarLoop]: Abstraction has has 67 places, 168 transitions, 1592 flow [2021-08-13 12:51:30,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,527 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:30,527 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:30,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 12:51:30,527 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:30,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:30,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1638813150, now seen corresponding path program 5 times [2021-08-13 12:51:30,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:30,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599953394] [2021-08-13 12:51:30,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:30,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:30,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:30,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:30,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:30,577 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:30,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:30,588 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:30,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:30,603 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:30,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:30,626 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:30,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:30,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:30,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599953394] [2021-08-13 12:51:30,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599953394] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:30,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:30,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:30,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741226998] [2021-08-13 12:51:30,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:30,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:30,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:30,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:30,645 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:30,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 168 transitions, 1592 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:30,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:30,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:30,743 INFO L129 PetriNetUnfolder]: 76/510 cut-off events. [2021-08-13 12:51:30,744 INFO L130 PetriNetUnfolder]: For 895/1577 co-relation queries the response was YES. [2021-08-13 12:51:30,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1785 conditions, 510 events. 76/510 cut-off events. For 895/1577 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4499 event pairs, 0 based on Foata normal form. 24/523 useless extension candidates. Maximal degree in co-relation 1513. Up to 97 conditions per place. [2021-08-13 12:51:30,749 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 134 selfloop transitions, 56 changer transitions 0/207 dead transitions. [2021-08-13 12:51:30,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 207 transitions, 2362 flow [2021-08-13 12:51:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:30,751 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:30,751 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:30,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,753 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,753 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 36 predicate places. [2021-08-13 12:51:30,753 INFO L482 AbstractCegarLoop]: Abstraction has has 73 places, 207 transitions, 2362 flow [2021-08-13 12:51:30,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,753 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:30,753 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:30,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 12:51:30,754 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:30,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:30,754 INFO L82 PathProgramCache]: Analyzing trace with hash -499541310, now seen corresponding path program 6 times [2021-08-13 12:51:30,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:30,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216014877] [2021-08-13 12:51:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:30,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:30,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:30,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:30,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:30,788 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:30,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:30,797 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:30,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:30,815 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:30,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:30,837 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:30,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:30,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:30,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216014877] [2021-08-13 12:51:30,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216014877] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:30,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:30,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:30,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278024522] [2021-08-13 12:51:30,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:30,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:30,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:30,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:30,859 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:30,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 207 transitions, 2362 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:30,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:30,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:30,953 INFO L129 PetriNetUnfolder]: 69/495 cut-off events. [2021-08-13 12:51:30,953 INFO L130 PetriNetUnfolder]: For 1077/1645 co-relation queries the response was YES. [2021-08-13 12:51:30,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 495 events. 69/495 cut-off events. For 1077/1645 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4370 event pairs, 0 based on Foata normal form. 33/514 useless extension candidates. Maximal degree in co-relation 1637. Up to 99 conditions per place. [2021-08-13 12:51:30,957 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 135 selfloop transitions, 57 changer transitions 0/209 dead transitions. [2021-08-13 12:51:30,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 209 transitions, 2770 flow [2021-08-13 12:51:30,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:30,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:30,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:30,958 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:30,958 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:30,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:30,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,961 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,961 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2021-08-13 12:51:30,961 INFO L482 AbstractCegarLoop]: Abstraction has has 79 places, 209 transitions, 2770 flow [2021-08-13 12:51:30,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:30,961 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:30,961 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:30,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 12:51:30,961 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:30,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:30,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1432304522, now seen corresponding path program 7 times [2021-08-13 12:51:30,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:30,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534689993] [2021-08-13 12:51:30,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:30,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:30,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:30,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:30,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:30,996 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:30,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:31,004 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:31,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:31,017 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:31,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:31,034 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:31,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:31,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:31,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534689993] [2021-08-13 12:51:31,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534689993] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:31,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:31,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:31,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599079215] [2021-08-13 12:51:31,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:31,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:31,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:31,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:31,052 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:31,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 209 transitions, 2770 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:31,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:31,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:31,173 INFO L129 PetriNetUnfolder]: 68/538 cut-off events. [2021-08-13 12:51:31,173 INFO L130 PetriNetUnfolder]: For 1742/3068 co-relation queries the response was YES. [2021-08-13 12:51:31,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2291 conditions, 538 events. 68/538 cut-off events. For 1742/3068 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5007 event pairs, 0 based on Foata normal form. 56/580 useless extension candidates. Maximal degree in co-relation 1906. Up to 109 conditions per place. [2021-08-13 12:51:31,177 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 142 selfloop transitions, 60 changer transitions 0/219 dead transitions. [2021-08-13 12:51:31,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 219 transitions, 3314 flow [2021-08-13 12:51:31,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:31,179 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:31,179 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:31,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:31,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:31,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:31,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,181 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,181 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2021-08-13 12:51:31,181 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 219 transitions, 3314 flow [2021-08-13 12:51:31,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,181 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:31,181 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:31,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 12:51:31,182 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:31,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:31,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1431984106, now seen corresponding path program 1 times [2021-08-13 12:51:31,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:31,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464019569] [2021-08-13 12:51:31,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:31,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:31,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:31,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:31,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:51:31,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:31,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:31,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:31,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464019569] [2021-08-13 12:51:31,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464019569] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:31,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:31,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:51:31,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100300316] [2021-08-13 12:51:31,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:51:31,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:31,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:51:31,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:51:31,206 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 48 [2021-08-13 12:51:31,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 219 transitions, 3314 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:31,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 48 [2021-08-13 12:51:31,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:31,252 INFO L129 PetriNetUnfolder]: 41/504 cut-off events. [2021-08-13 12:51:31,252 INFO L130 PetriNetUnfolder]: For 1892/2960 co-relation queries the response was YES. [2021-08-13 12:51:31,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 504 events. 41/504 cut-off events. For 1892/2960 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4796 event pairs, 0 based on Foata normal form. 32/524 useless extension candidates. Maximal degree in co-relation 1878. Up to 109 conditions per place. [2021-08-13 12:51:31,255 INFO L132 encePairwiseOnDemand]: 46/48 looper letters, 1 selfloop transitions, 1 changer transitions 15/217 dead transitions. [2021-08-13 12:51:31,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 217 transitions, 3308 flow [2021-08-13 12:51:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:51:31,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:51:31,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2021-08-13 12:51:31,256 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8958333333333334 [2021-08-13 12:51:31,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2021-08-13 12:51:31,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2021-08-13 12:51:31,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:31,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2021-08-13 12:51:31,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,257 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,257 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2021-08-13 12:51:31,257 INFO L482 AbstractCegarLoop]: Abstraction has has 87 places, 217 transitions, 3308 flow [2021-08-13 12:51:31,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,257 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:31,257 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:31,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 12:51:31,257 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:31,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:31,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1116480152, now seen corresponding path program 8 times [2021-08-13 12:51:31,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:31,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638307688] [2021-08-13 12:51:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:31,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:31,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:31,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:31,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:31,294 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:31,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:31,302 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:31,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:31,319 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:31,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:31,340 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:31,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:31,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:31,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638307688] [2021-08-13 12:51:31,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638307688] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:31,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:31,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:31,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502223274] [2021-08-13 12:51:31,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:31,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:31,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:31,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:31,358 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:31,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 217 transitions, 3308 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:31,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:31,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:31,459 INFO L129 PetriNetUnfolder]: 39/513 cut-off events. [2021-08-13 12:51:31,459 INFO L130 PetriNetUnfolder]: For 2452/4062 co-relation queries the response was YES. [2021-08-13 12:51:31,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2501 conditions, 513 events. 39/513 cut-off events. For 2452/4062 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4956 event pairs, 0 based on Foata normal form. 59/560 useless extension candidates. Maximal degree in co-relation 2068. Up to 111 conditions per place. [2021-08-13 12:51:31,462 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 134 selfloop transitions, 52 changer transitions 18/219 dead transitions. [2021-08-13 12:51:31,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 219 transitions, 3748 flow [2021-08-13 12:51:31,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:31,464 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:31,464 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:31,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:31,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:31,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:31,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,465 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,466 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 56 predicate places. [2021-08-13 12:51:31,466 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 219 transitions, 3748 flow [2021-08-13 12:51:31,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,466 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:31,466 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:31,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 12:51:31,466 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:31,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:31,467 INFO L82 PathProgramCache]: Analyzing trace with hash -465368498, now seen corresponding path program 9 times [2021-08-13 12:51:31,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:31,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902584928] [2021-08-13 12:51:31,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:31,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:31,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:31,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:31,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:31,500 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:31,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:31,508 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:31,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:31,521 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:31,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:31,537 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:31,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:31,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:31,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902584928] [2021-08-13 12:51:31,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902584928] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:31,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:31,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:31,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631180550] [2021-08-13 12:51:31,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:31,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:31,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:31,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:31,557 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:31,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 219 transitions, 3748 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:31,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:31,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:31,665 INFO L129 PetriNetUnfolder]: 30/571 cut-off events. [2021-08-13 12:51:31,666 INFO L130 PetriNetUnfolder]: For 3421/5147 co-relation queries the response was YES. [2021-08-13 12:51:31,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 571 events. 30/571 cut-off events. For 3421/5147 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5835 event pairs, 0 based on Foata normal form. 56/614 useless extension candidates. Maximal degree in co-relation 2380. Up to 128 conditions per place. [2021-08-13 12:51:31,669 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 144 selfloop transitions, 57 changer transitions 20/236 dead transitions. [2021-08-13 12:51:31,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 236 transitions, 4496 flow [2021-08-13 12:51:31,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:31,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:31,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:31,670 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:31,670 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:31,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:31,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:31,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:31,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,673 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,673 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 62 predicate places. [2021-08-13 12:51:31,673 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 236 transitions, 4496 flow [2021-08-13 12:51:31,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,673 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:31,673 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:31,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 12:51:31,673 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:31,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:31,674 INFO L82 PathProgramCache]: Analyzing trace with hash -770972178, now seen corresponding path program 10 times [2021-08-13 12:51:31,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:31,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435517147] [2021-08-13 12:51:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:31,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:31,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:31,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:31,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:31,699 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:31,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:31,706 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:31,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:31,717 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:31,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:31,735 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:31,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:31,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:31,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:31,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435517147] [2021-08-13 12:51:31,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435517147] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:31,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:31,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:31,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731725293] [2021-08-13 12:51:31,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:31,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:31,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:31,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:31,751 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:31,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 236 transitions, 4496 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:31,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:31,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:31,852 INFO L129 PetriNetUnfolder]: 30/575 cut-off events. [2021-08-13 12:51:31,852 INFO L130 PetriNetUnfolder]: For 4229/6155 co-relation queries the response was YES. [2021-08-13 12:51:31,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3191 conditions, 575 events. 30/575 cut-off events. For 4229/6155 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5892 event pairs, 0 based on Foata normal form. 56/616 useless extension candidates. Maximal degree in co-relation 2576. Up to 127 conditions per place. [2021-08-13 12:51:31,856 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 142 selfloop transitions, 54 changer transitions 24/235 dead transitions. [2021-08-13 12:51:31,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 235 transitions, 4916 flow [2021-08-13 12:51:31,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:31,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:31,857 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:31,857 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:31,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:31,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:31,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:31,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,859 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,859 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 68 predicate places. [2021-08-13 12:51:31,859 INFO L482 AbstractCegarLoop]: Abstraction has has 105 places, 235 transitions, 4916 flow [2021-08-13 12:51:31,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,859 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:31,859 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:31,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 12:51:31,859 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:31,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:31,859 INFO L82 PathProgramCache]: Analyzing trace with hash -751610382, now seen corresponding path program 11 times [2021-08-13 12:51:31,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:31,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713069127] [2021-08-13 12:51:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:31,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:31,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:31,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:31,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:31,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:31,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:31,887 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:31,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:31,907 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:31,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:31,923 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:31,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:31,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:31,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713069127] [2021-08-13 12:51:31,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713069127] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:31,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:31,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:31,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034219732] [2021-08-13 12:51:31,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:31,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:31,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:31,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:31,940 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:31,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 235 transitions, 4916 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:31,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:31,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:31,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:32,052 INFO L129 PetriNetUnfolder]: 28/596 cut-off events. [2021-08-13 12:51:32,052 INFO L130 PetriNetUnfolder]: For 5499/7733 co-relation queries the response was YES. [2021-08-13 12:51:32,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3524 conditions, 596 events. 28/596 cut-off events. For 5499/7733 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6198 event pairs, 0 based on Foata normal form. 54/636 useless extension candidates. Maximal degree in co-relation 2836. Up to 133 conditions per place. [2021-08-13 12:51:32,056 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 145 selfloop transitions, 56 changer transitions 26/242 dead transitions. [2021-08-13 12:51:32,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 242 transitions, 5524 flow [2021-08-13 12:51:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:32,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:32,058 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:32,058 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:32,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,060 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,060 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 74 predicate places. [2021-08-13 12:51:32,060 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 242 transitions, 5524 flow [2021-08-13 12:51:32,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,060 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:32,060 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:32,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 12:51:32,060 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:32,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:32,061 INFO L82 PathProgramCache]: Analyzing trace with hash 108333204, now seen corresponding path program 12 times [2021-08-13 12:51:32,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:32,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788664893] [2021-08-13 12:51:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:32,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:32,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:32,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:32,090 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:32,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:32,101 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:32,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:32,120 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:32,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:32,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:32,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788664893] [2021-08-13 12:51:32,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788664893] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:32,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:32,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:32,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224017519] [2021-08-13 12:51:32,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:32,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:32,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:32,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:32,137 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:32,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 242 transitions, 5524 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:32,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:32,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:32,246 INFO L129 PetriNetUnfolder]: 28/600 cut-off events. [2021-08-13 12:51:32,246 INFO L130 PetriNetUnfolder]: For 6259/8589 co-relation queries the response was YES. [2021-08-13 12:51:32,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3754 conditions, 600 events. 28/600 cut-off events. For 6259/8589 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6229 event pairs, 0 based on Foata normal form. 54/638 useless extension candidates. Maximal degree in co-relation 3037. Up to 132 conditions per place. [2021-08-13 12:51:32,249 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 140 selfloop transitions, 58 changer transitions 28/241 dead transitions. [2021-08-13 12:51:32,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 241 transitions, 5952 flow [2021-08-13 12:51:32,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:32,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:32,250 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:32,250 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:32,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,252 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,253 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 80 predicate places. [2021-08-13 12:51:32,253 INFO L482 AbstractCegarLoop]: Abstraction has has 117 places, 241 transitions, 5952 flow [2021-08-13 12:51:32,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,253 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:32,253 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:32,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 12:51:32,253 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:32,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:32,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1693422334, now seen corresponding path program 13 times [2021-08-13 12:51:32,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:32,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011089780] [2021-08-13 12:51:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:32,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:32,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:32,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:32,280 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:32,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:32,303 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:32,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:32,317 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:32,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:32,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:32,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011089780] [2021-08-13 12:51:32,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011089780] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:32,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:32,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:32,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486855573] [2021-08-13 12:51:32,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:32,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:32,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:32,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:32,335 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:32,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 241 transitions, 5952 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:32,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:32,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:32,475 INFO L129 PetriNetUnfolder]: 27/607 cut-off events. [2021-08-13 12:51:32,475 INFO L130 PetriNetUnfolder]: For 7442/9976 co-relation queries the response was YES. [2021-08-13 12:51:32,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4009 conditions, 607 events. 27/607 cut-off events. For 7442/9976 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6344 event pairs, 0 based on Foata normal form. 48/639 useless extension candidates. Maximal degree in co-relation 3248. Up to 133 conditions per place. [2021-08-13 12:51:32,479 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 143 selfloop transitions, 53 changer transitions 31/242 dead transitions. [2021-08-13 12:51:32,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 242 transitions, 6432 flow [2021-08-13 12:51:32,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:32,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:32,480 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:32,480 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:32,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,482 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,483 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 86 predicate places. [2021-08-13 12:51:32,483 INFO L482 AbstractCegarLoop]: Abstraction has has 123 places, 242 transitions, 6432 flow [2021-08-13 12:51:32,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,483 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:32,483 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:32,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 12:51:32,483 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:32,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:32,484 INFO L82 PathProgramCache]: Analyzing trace with hash -473242778, now seen corresponding path program 14 times [2021-08-13 12:51:32,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:32,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485962859] [2021-08-13 12:51:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:32,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:32,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:32,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:32,521 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:32,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:32,534 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:32,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:32,553 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:32,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:32,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:32,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485962859] [2021-08-13 12:51:32,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485962859] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:32,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:32,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:32,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882424202] [2021-08-13 12:51:32,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:32,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:32,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:32,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:32,571 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:32,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 242 transitions, 6432 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:32,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:32,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:32,689 INFO L129 PetriNetUnfolder]: 27/601 cut-off events. [2021-08-13 12:51:32,689 INFO L130 PetriNetUnfolder]: For 6946/8127 co-relation queries the response was YES. [2021-08-13 12:51:32,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4207 conditions, 601 events. 27/601 cut-off events. For 6946/8127 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6290 event pairs, 0 based on Foata normal form. 27/614 useless extension candidates. Maximal degree in co-relation 3420. Up to 132 conditions per place. [2021-08-13 12:51:32,693 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 136 selfloop transitions, 56 changer transitions 34/241 dead transitions. [2021-08-13 12:51:32,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 241 transitions, 6856 flow [2021-08-13 12:51:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:32,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:32,695 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:32,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:32,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,719 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,719 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 92 predicate places. [2021-08-13 12:51:32,719 INFO L482 AbstractCegarLoop]: Abstraction has has 129 places, 241 transitions, 6856 flow [2021-08-13 12:51:32,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,719 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:32,719 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:32,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 12:51:32,719 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:32,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:32,719 INFO L82 PathProgramCache]: Analyzing trace with hash 563802946, now seen corresponding path program 15 times [2021-08-13 12:51:32,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:32,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742715367] [2021-08-13 12:51:32,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:32,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:32,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:32,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:32,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:51:32,763 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:32,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:32,785 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:32,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:32,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:32,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742715367] [2021-08-13 12:51:32,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742715367] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:32,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:32,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:32,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825420770] [2021-08-13 12:51:32,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:32,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:32,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:32,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:32,806 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:32,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 241 transitions, 6856 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:32,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:32,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:32,910 INFO L129 PetriNetUnfolder]: 21/653 cut-off events. [2021-08-13 12:51:32,910 INFO L130 PetriNetUnfolder]: For 8608/9871 co-relation queries the response was YES. [2021-08-13 12:51:32,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4733 conditions, 653 events. 21/653 cut-off events. For 8608/9871 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7017 event pairs, 0 based on Foata normal form. 25/661 useless extension candidates. Maximal degree in co-relation 3789. Up to 140 conditions per place. [2021-08-13 12:51:32,913 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 148 selfloop transitions, 55 changer transitions 36/254 dead transitions. [2021-08-13 12:51:32,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 254 transitions, 7724 flow [2021-08-13 12:51:32,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:32,915 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:32,915 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:32,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:32,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,917 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,917 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 98 predicate places. [2021-08-13 12:51:32,918 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 254 transitions, 7724 flow [2021-08-13 12:51:32,918 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,918 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:32,918 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:32,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 12:51:32,918 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:32,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:32,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1626460848, now seen corresponding path program 16 times [2021-08-13 12:51:32,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:32,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955052439] [2021-08-13 12:51:32,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:32,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:32,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:32,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:32,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:32,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:51:32,964 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:32,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:32,980 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:32,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:32,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:32,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955052439] [2021-08-13 12:51:32,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955052439] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:32,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:32,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:32,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909223269] [2021-08-13 12:51:32,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:32,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:32,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:32,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:32,996 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:32,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 254 transitions, 7724 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:32,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:32,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:32,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:33,116 INFO L129 PetriNetUnfolder]: 21/651 cut-off events. [2021-08-13 12:51:33,116 INFO L130 PetriNetUnfolder]: For 11693/14691 co-relation queries the response was YES. [2021-08-13 12:51:33,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 651 events. 21/651 cut-off events. For 11693/14691 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7010 event pairs, 0 based on Foata normal form. 46/682 useless extension candidates. Maximal degree in co-relation 3980. Up to 139 conditions per place. [2021-08-13 12:51:33,120 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 145 selfloop transitions, 53 changer transitions 40/253 dead transitions. [2021-08-13 12:51:33,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 253 transitions, 8168 flow [2021-08-13 12:51:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:33,121 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:33,121 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:33,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,122 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,122 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 104 predicate places. [2021-08-13 12:51:33,122 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 253 transitions, 8168 flow [2021-08-13 12:51:33,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,122 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:33,122 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:33,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 12:51:33,122 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:33,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:33,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1043826396, now seen corresponding path program 17 times [2021-08-13 12:51:33,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:33,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080908184] [2021-08-13 12:51:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:33,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:33,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:33,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:33,146 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:33,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:33,165 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:33,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:33,180 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:33,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:33,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:33,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:33,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080908184] [2021-08-13 12:51:33,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080908184] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:33,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:33,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:33,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675429798] [2021-08-13 12:51:33,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:33,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:33,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:33,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:33,197 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:33,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 253 transitions, 8168 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:33,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:33,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:33,322 INFO L129 PetriNetUnfolder]: 21/651 cut-off events. [2021-08-13 12:51:33,323 INFO L130 PetriNetUnfolder]: For 12381/14727 co-relation queries the response was YES. [2021-08-13 12:51:33,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5177 conditions, 651 events. 21/651 cut-off events. For 12381/14727 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7022 event pairs, 0 based on Foata normal form. 23/657 useless extension candidates. Maximal degree in co-relation 4177. Up to 138 conditions per place. [2021-08-13 12:51:33,331 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 139 selfloop transitions, 56 changer transitions 42/252 dead transitions. [2021-08-13 12:51:33,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 252 transitions, 8608 flow [2021-08-13 12:51:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:33,332 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:33,332 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:33,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,338 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,338 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 110 predicate places. [2021-08-13 12:51:33,338 INFO L482 AbstractCegarLoop]: Abstraction has has 147 places, 252 transitions, 8608 flow [2021-08-13 12:51:33,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,338 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:33,338 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:33,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 12:51:33,338 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:33,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:33,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1807180214, now seen corresponding path program 18 times [2021-08-13 12:51:33,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:33,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995289225] [2021-08-13 12:51:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:33,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:33,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:33,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:33,363 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:33,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:33,373 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:33,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:33,388 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:33,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:33,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:33,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995289225] [2021-08-13 12:51:33,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995289225] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:33,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:33,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:33,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800206417] [2021-08-13 12:51:33,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:33,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:33,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:33,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:33,402 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:33,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 252 transitions, 8608 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:33,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:33,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:33,514 INFO L129 PetriNetUnfolder]: 17/687 cut-off events. [2021-08-13 12:51:33,514 INFO L130 PetriNetUnfolder]: For 14667/17263 co-relation queries the response was YES. [2021-08-13 12:51:33,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5663 conditions, 687 events. 17/687 cut-off events. For 14667/17263 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7559 event pairs, 0 based on Foata normal form. 23/693 useless extension candidates. Maximal degree in co-relation 4528. Up to 144 conditions per place. [2021-08-13 12:51:33,517 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 151 selfloop transitions, 52 changer transitions 44/262 dead transitions. [2021-08-13 12:51:33,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 262 transitions, 9462 flow [2021-08-13 12:51:33,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:33,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:33,518 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:33,518 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:33,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,519 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,519 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 116 predicate places. [2021-08-13 12:51:33,519 INFO L482 AbstractCegarLoop]: Abstraction has has 153 places, 262 transitions, 9462 flow [2021-08-13 12:51:33,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,519 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:33,519 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:33,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 12:51:33,519 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:33,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:33,519 INFO L82 PathProgramCache]: Analyzing trace with hash -2038710518, now seen corresponding path program 19 times [2021-08-13 12:51:33,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:33,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397823376] [2021-08-13 12:51:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:33,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:33,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:33,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:33,542 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:33,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:33,553 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:33,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:33,567 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:33,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:33,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:33,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397823376] [2021-08-13 12:51:33,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397823376] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:33,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:33,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:33,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481388518] [2021-08-13 12:51:33,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:33,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:33,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:33,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:33,582 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:33,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 262 transitions, 9462 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:33,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:33,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:33,696 INFO L129 PetriNetUnfolder]: 17/686 cut-off events. [2021-08-13 12:51:33,696 INFO L130 PetriNetUnfolder]: For 16375/19732 co-relation queries the response was YES. [2021-08-13 12:51:33,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5891 conditions, 686 events. 17/686 cut-off events. For 16375/19732 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7534 event pairs, 0 based on Foata normal form. 22/692 useless extension candidates. Maximal degree in co-relation 4728. Up to 143 conditions per place. [2021-08-13 12:51:33,698 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 143 selfloop transitions, 57 changer transitions 46/261 dead transitions. [2021-08-13 12:51:33,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 261 transitions, 9916 flow [2021-08-13 12:51:33,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:33,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:33,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:33,699 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:33,699 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:33,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,700 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,701 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 122 predicate places. [2021-08-13 12:51:33,701 INFO L482 AbstractCegarLoop]: Abstraction has has 159 places, 261 transitions, 9916 flow [2021-08-13 12:51:33,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,701 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:33,701 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:33,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 12:51:33,701 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:33,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:33,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1328366334, now seen corresponding path program 20 times [2021-08-13 12:51:33,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:33,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818812794] [2021-08-13 12:51:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:33,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:33,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:33,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:33,722 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:33,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:33,759 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:33,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:33,774 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:33,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:33,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:33,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818812794] [2021-08-13 12:51:33,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818812794] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:33,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:33,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:33,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638210682] [2021-08-13 12:51:33,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:33,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:33,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:33,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:33,790 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:33,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 261 transitions, 9916 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:33,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:33,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:33,901 INFO L129 PetriNetUnfolder]: 17/685 cut-off events. [2021-08-13 12:51:33,902 INFO L130 PetriNetUnfolder]: For 15922/17769 co-relation queries the response was YES. [2021-08-13 12:51:33,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6117 conditions, 685 events. 17/685 cut-off events. For 15922/17769 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7539 event pairs, 0 based on Foata normal form. 19/687 useless extension candidates. Maximal degree in co-relation 4928. Up to 142 conditions per place. [2021-08-13 12:51:33,904 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 146 selfloop transitions, 50 changer transitions 49/260 dead transitions. [2021-08-13 12:51:33,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 260 transitions, 10366 flow [2021-08-13 12:51:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:33,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:33,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:33,905 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:33,905 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:33,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:33,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,906 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,906 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 128 predicate places. [2021-08-13 12:51:33,906 INFO L482 AbstractCegarLoop]: Abstraction has has 165 places, 260 transitions, 10366 flow [2021-08-13 12:51:33,906 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,906 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:33,906 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:33,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 12:51:33,907 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:33,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:33,907 INFO L82 PathProgramCache]: Analyzing trace with hash 208459668, now seen corresponding path program 21 times [2021-08-13 12:51:33,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:33,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392918226] [2021-08-13 12:51:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:33,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:33,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:33,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:33,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:33,928 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:33,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:33,947 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:33,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:33,962 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:33,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:33,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:33,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392918226] [2021-08-13 12:51:33,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392918226] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:33,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:33,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:33,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914929174] [2021-08-13 12:51:33,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:33,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:33,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:33,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:33,978 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:33,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 260 transitions, 10366 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:33,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:33,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:33,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:34,084 INFO L129 PetriNetUnfolder]: 17/684 cut-off events. [2021-08-13 12:51:34,084 INFO L130 PetriNetUnfolder]: For 17440/19409 co-relation queries the response was YES. [2021-08-13 12:51:34,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6341 conditions, 684 events. 17/684 cut-off events. For 17440/19409 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7541 event pairs, 0 based on Foata normal form. 19/686 useless extension candidates. Maximal degree in co-relation 5128. Up to 141 conditions per place. [2021-08-13 12:51:34,086 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 138 selfloop transitions, 54 changer transitions 52/259 dead transitions. [2021-08-13 12:51:34,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 259 transitions, 10812 flow [2021-08-13 12:51:34,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:34,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:34,087 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:34,087 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:34,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,088 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,088 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 134 predicate places. [2021-08-13 12:51:34,088 INFO L482 AbstractCegarLoop]: Abstraction has has 171 places, 259 transitions, 10812 flow [2021-08-13 12:51:34,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,089 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:34,089 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:34,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 12:51:34,089 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:34,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:34,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1043034882, now seen corresponding path program 22 times [2021-08-13 12:51:34,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:34,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490810011] [2021-08-13 12:51:34,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:34,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:34,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:34,111 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:34,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:34,122 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:34,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:34,137 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:34,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:34,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:34,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490810011] [2021-08-13 12:51:34,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490810011] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:34,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:34,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:34,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459312943] [2021-08-13 12:51:34,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:34,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:34,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:34,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:34,155 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:34,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 259 transitions, 10812 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:34,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:34,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:34,309 INFO L129 PetriNetUnfolder]: 17/683 cut-off events. [2021-08-13 12:51:34,309 INFO L130 PetriNetUnfolder]: For 22927/27242 co-relation queries the response was YES. [2021-08-13 12:51:34,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6563 conditions, 683 events. 17/683 cut-off events. For 22927/27242 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7500 event pairs, 0 based on Foata normal form. 24/690 useless extension candidates. Maximal degree in co-relation 5328. Up to 140 conditions per place. [2021-08-13 12:51:34,312 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 136 selfloop transitions, 51 changer transitions 56/258 dead transitions. [2021-08-13 12:51:34,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 258 transitions, 11254 flow [2021-08-13 12:51:34,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:34,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:34,313 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:34,313 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:34,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,314 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,315 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 140 predicate places. [2021-08-13 12:51:34,315 INFO L482 AbstractCegarLoop]: Abstraction has has 177 places, 258 transitions, 11254 flow [2021-08-13 12:51:34,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,315 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:34,315 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:34,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 12:51:34,315 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:34,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:34,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1642598942, now seen corresponding path program 23 times [2021-08-13 12:51:34,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:34,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694296457] [2021-08-13 12:51:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:34,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:34,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:34,339 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:34,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:34,349 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:34,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:34,369 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:34,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:34,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:34,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694296457] [2021-08-13 12:51:34,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694296457] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:34,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:34,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:34,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980824527] [2021-08-13 12:51:34,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:34,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:34,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:34,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:34,386 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:34,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 258 transitions, 11254 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:34,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:34,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:34,538 INFO L129 PetriNetUnfolder]: 17/682 cut-off events. [2021-08-13 12:51:34,538 INFO L130 PetriNetUnfolder]: For 24991/29540 co-relation queries the response was YES. [2021-08-13 12:51:34,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 682 events. 17/682 cut-off events. For 24991/29540 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7501 event pairs, 0 based on Foata normal form. 24/689 useless extension candidates. Maximal degree in co-relation 5528. Up to 139 conditions per place. [2021-08-13 12:51:34,541 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 133 selfloop transitions, 51 changer transitions 58/257 dead transitions. [2021-08-13 12:51:34,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 257 transitions, 11692 flow [2021-08-13 12:51:34,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:34,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:34,542 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:34,542 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:34,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,544 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,544 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 146 predicate places. [2021-08-13 12:51:34,544 INFO L482 AbstractCegarLoop]: Abstraction has has 183 places, 257 transitions, 11692 flow [2021-08-13 12:51:34,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,544 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:34,544 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:34,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-13 12:51:34,545 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:34,545 INFO L82 PathProgramCache]: Analyzing trace with hash 429966046, now seen corresponding path program 24 times [2021-08-13 12:51:34,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:34,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609641711] [2021-08-13 12:51:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:34,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:34,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:34,570 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:34,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:34,582 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:34,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:34,598 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:34,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:34,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:34,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609641711] [2021-08-13 12:51:34,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609641711] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:34,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:34,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:34,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351499961] [2021-08-13 12:51:34,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:34,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:34,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:34,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:34,615 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:34,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 257 transitions, 11692 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:34,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:34,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:34,749 INFO L129 PetriNetUnfolder]: 17/681 cut-off events. [2021-08-13 12:51:34,749 INFO L130 PetriNetUnfolder]: For 27129/31912 co-relation queries the response was YES. [2021-08-13 12:51:34,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7001 conditions, 681 events. 17/681 cut-off events. For 27129/31912 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7478 event pairs, 0 based on Foata normal form. 24/688 useless extension candidates. Maximal degree in co-relation 5728. Up to 138 conditions per place. [2021-08-13 12:51:34,751 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 131 selfloop transitions, 50 changer transitions 60/256 dead transitions. [2021-08-13 12:51:34,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 256 transitions, 12126 flow [2021-08-13 12:51:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:34,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:34,752 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:34,752 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:34,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,753 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,753 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 152 predicate places. [2021-08-13 12:51:34,753 INFO L482 AbstractCegarLoop]: Abstraction has has 189 places, 256 transitions, 12126 flow [2021-08-13 12:51:34,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,754 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:34,754 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:34,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-13 12:51:34,754 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:34,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:34,754 INFO L82 PathProgramCache]: Analyzing trace with hash -902054038, now seen corresponding path program 25 times [2021-08-13 12:51:34,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:34,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676400547] [2021-08-13 12:51:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:34,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:34,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:34,774 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:34,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:34,784 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:34,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:34,798 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:34,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:34,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:34,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676400547] [2021-08-13 12:51:34,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676400547] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:34,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:34,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:34,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235528917] [2021-08-13 12:51:34,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:34,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:34,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:34,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:34,814 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:34,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 256 transitions, 12126 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:34,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:34,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:34,953 INFO L129 PetriNetUnfolder]: 17/680 cut-off events. [2021-08-13 12:51:34,954 INFO L130 PetriNetUnfolder]: For 27688/32341 co-relation queries the response was YES. [2021-08-13 12:51:34,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 680 events. 17/680 cut-off events. For 27688/32341 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7462 event pairs, 0 based on Foata normal form. 22/686 useless extension candidates. Maximal degree in co-relation 5928. Up to 137 conditions per place. [2021-08-13 12:51:34,956 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 130 selfloop transitions, 47 changer transitions 63/255 dead transitions. [2021-08-13 12:51:34,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 255 transitions, 12556 flow [2021-08-13 12:51:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:34,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:34,957 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:34,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:34,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:34,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,958 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,958 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 158 predicate places. [2021-08-13 12:51:34,958 INFO L482 AbstractCegarLoop]: Abstraction has has 195 places, 255 transitions, 12556 flow [2021-08-13 12:51:34,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:34,958 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:34,959 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:34,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-13 12:51:34,959 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:34,959 INFO L82 PathProgramCache]: Analyzing trace with hash -965868364, now seen corresponding path program 26 times [2021-08-13 12:51:34,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:34,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801852639] [2021-08-13 12:51:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:34,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:34,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:34,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:34,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:34,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:51:34,989 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:34,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:35,006 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:35,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:35,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:35,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801852639] [2021-08-13 12:51:35,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801852639] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:35,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:35,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:35,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224869291] [2021-08-13 12:51:35,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:35,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:35,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:35,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:35,023 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:35,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 255 transitions, 12556 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:35,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:35,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:35,152 INFO L129 PetriNetUnfolder]: 17/679 cut-off events. [2021-08-13 12:51:35,153 INFO L130 PetriNetUnfolder]: For 29801/34670 co-relation queries the response was YES. [2021-08-13 12:51:35,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7431 conditions, 679 events. 17/679 cut-off events. For 29801/34670 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7441 event pairs, 0 based on Foata normal form. 22/685 useless extension candidates. Maximal degree in co-relation 6128. Up to 136 conditions per place. [2021-08-13 12:51:35,156 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 127 selfloop transitions, 47 changer transitions 65/254 dead transitions. [2021-08-13 12:51:35,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 254 transitions, 12982 flow [2021-08-13 12:51:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:35,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:35,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:35,157 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:35,157 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:35,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:35,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:35,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:35,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,158 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,158 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 164 predicate places. [2021-08-13 12:51:35,158 INFO L482 AbstractCegarLoop]: Abstraction has has 201 places, 254 transitions, 12982 flow [2021-08-13 12:51:35,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,158 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:35,158 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:35,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-13 12:51:35,158 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:35,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:35,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1895028182, now seen corresponding path program 27 times [2021-08-13 12:51:35,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:35,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283482102] [2021-08-13 12:51:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:35,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:35,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:35,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:35,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:51:35,192 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:35,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:35,206 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:35,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:35,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:35,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283482102] [2021-08-13 12:51:35,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283482102] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:35,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:35,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:35,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998209499] [2021-08-13 12:51:35,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:35,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:35,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:35,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:35,221 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:35,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 254 transitions, 12982 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:35,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:35,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:35,349 INFO L129 PetriNetUnfolder]: 17/678 cut-off events. [2021-08-13 12:51:35,349 INFO L130 PetriNetUnfolder]: For 33957/39442 co-relation queries the response was YES. [2021-08-13 12:51:35,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7643 conditions, 678 events. 17/678 cut-off events. For 33957/39442 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7441 event pairs, 0 based on Foata normal form. 24/685 useless extension candidates. Maximal degree in co-relation 6328. Up to 135 conditions per place. [2021-08-13 12:51:35,353 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 124 selfloop transitions, 46 changer transitions 68/253 dead transitions. [2021-08-13 12:51:35,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 253 transitions, 13404 flow [2021-08-13 12:51:35,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:35,353 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:35,353 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:35,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:35,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:35,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:35,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,355 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,355 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 170 predicate places. [2021-08-13 12:51:35,355 INFO L482 AbstractCegarLoop]: Abstraction has has 207 places, 253 transitions, 13404 flow [2021-08-13 12:51:35,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,355 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:35,355 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:35,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-13 12:51:35,355 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:35,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1755250882, now seen corresponding path program 28 times [2021-08-13 12:51:35,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:35,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928072523] [2021-08-13 12:51:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:35,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:35,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:35,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:35,376 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:35,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:35,386 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:35,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:35,401 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:35,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:35,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:35,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928072523] [2021-08-13 12:51:35,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928072523] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:35,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:35,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:35,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665908038] [2021-08-13 12:51:35,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:35,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:35,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:35,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:35,417 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:35,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 253 transitions, 13404 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:35,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:35,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:35,578 INFO L129 PetriNetUnfolder]: 17/677 cut-off events. [2021-08-13 12:51:35,579 INFO L130 PetriNetUnfolder]: For 36361/42080 co-relation queries the response was YES. [2021-08-13 12:51:35,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 677 events. 17/677 cut-off events. For 36361/42080 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7430 event pairs, 0 based on Foata normal form. 24/684 useless extension candidates. Maximal degree in co-relation 6528. Up to 134 conditions per place. [2021-08-13 12:51:35,581 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 122 selfloop transitions, 42 changer transitions 73/252 dead transitions. [2021-08-13 12:51:35,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 252 transitions, 13822 flow [2021-08-13 12:51:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:35,582 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:35,582 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:35,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:35,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:35,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:35,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,584 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,584 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 176 predicate places. [2021-08-13 12:51:35,584 INFO L482 AbstractCegarLoop]: Abstraction has has 213 places, 252 transitions, 13822 flow [2021-08-13 12:51:35,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,584 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:35,584 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:35,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-13 12:51:35,584 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:35,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:35,585 INFO L82 PathProgramCache]: Analyzing trace with hash 509883668, now seen corresponding path program 29 times [2021-08-13 12:51:35,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:35,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390999397] [2021-08-13 12:51:35,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:35,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:35,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:35,598 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:35,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:35,604 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:35,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:35,615 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:35,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:35,629 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:35,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:35,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:35,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:35,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390999397] [2021-08-13 12:51:35,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390999397] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:35,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:35,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:35,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760408815] [2021-08-13 12:51:35,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:35,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:35,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:35,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:35,646 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:35,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 252 transitions, 13822 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:35,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:35,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:35,792 INFO L129 PetriNetUnfolder]: 17/676 cut-off events. [2021-08-13 12:51:35,792 INFO L130 PetriNetUnfolder]: For 38824/44777 co-relation queries the response was YES. [2021-08-13 12:51:35,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8061 conditions, 676 events. 17/676 cut-off events. For 38824/44777 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7403 event pairs, 0 based on Foata normal form. 41/700 useless extension candidates. Maximal degree in co-relation 6728. Up to 134 conditions per place. [2021-08-13 12:51:35,795 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 49 changer transitions 76/251 dead transitions. [2021-08-13 12:51:35,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 251 transitions, 14236 flow [2021-08-13 12:51:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:35,796 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:35,796 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:35,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:35,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:35,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:35,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,807 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,808 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 182 predicate places. [2021-08-13 12:51:35,808 INFO L482 AbstractCegarLoop]: Abstraction has has 219 places, 251 transitions, 14236 flow [2021-08-13 12:51:35,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,808 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:35,808 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:35,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-13 12:51:35,808 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:35,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:35,809 INFO L82 PathProgramCache]: Analyzing trace with hash -727827062, now seen corresponding path program 30 times [2021-08-13 12:51:35,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:35,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220893236] [2021-08-13 12:51:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:35,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:35,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:35,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:35,824 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:35,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:35,832 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:35,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:35,842 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:35,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:35,859 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:35,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:35,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:35,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220893236] [2021-08-13 12:51:35,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220893236] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:35,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:35,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:35,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818073542] [2021-08-13 12:51:35,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:35,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:35,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:35,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:35,877 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:35,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 251 transitions, 14236 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:35,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:35,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:35,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:36,015 INFO L129 PetriNetUnfolder]: 17/675 cut-off events. [2021-08-13 12:51:36,015 INFO L130 PetriNetUnfolder]: For 26243/27896 co-relation queries the response was YES. [2021-08-13 12:51:36,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8267 conditions, 675 events. 17/675 cut-off events. For 26243/27896 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7396 event pairs, 0 based on Foata normal form. 30/688 useless extension candidates. Maximal degree in co-relation 6928. Up to 134 conditions per place. [2021-08-13 12:51:36,018 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 109 selfloop transitions, 48 changer transitions 78/250 dead transitions. [2021-08-13 12:51:36,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 250 transitions, 14646 flow [2021-08-13 12:51:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:36,019 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:36,019 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:36,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,020 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,021 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 188 predicate places. [2021-08-13 12:51:36,021 INFO L482 AbstractCegarLoop]: Abstraction has has 225 places, 250 transitions, 14646 flow [2021-08-13 12:51:36,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,021 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:36,021 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:36,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-13 12:51:36,021 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:36,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:36,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1335662894, now seen corresponding path program 31 times [2021-08-13 12:51:36,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:36,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018723167] [2021-08-13 12:51:36,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:36,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:36,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:36,036 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:36,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:36,043 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:36,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:36,053 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:36,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:36,069 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:36,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:36,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:36,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:36,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018723167] [2021-08-13 12:51:36,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018723167] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:36,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:36,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:36,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649308423] [2021-08-13 12:51:36,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:36,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:36,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:36,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:36,084 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:36,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 250 transitions, 14646 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:36,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:36,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:36,246 INFO L129 PetriNetUnfolder]: 17/674 cut-off events. [2021-08-13 12:51:36,246 INFO L130 PetriNetUnfolder]: For 27604/29339 co-relation queries the response was YES. [2021-08-13 12:51:36,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8471 conditions, 674 events. 17/674 cut-off events. For 27604/29339 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7388 event pairs, 0 based on Foata normal form. 30/687 useless extension candidates. Maximal degree in co-relation 7128. Up to 134 conditions per place. [2021-08-13 12:51:36,249 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 106 selfloop transitions, 47 changer transitions 81/249 dead transitions. [2021-08-13 12:51:36,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 249 transitions, 15052 flow [2021-08-13 12:51:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:36,250 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:36,250 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:36,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,251 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,251 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 194 predicate places. [2021-08-13 12:51:36,251 INFO L482 AbstractCegarLoop]: Abstraction has has 231 places, 249 transitions, 15052 flow [2021-08-13 12:51:36,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,252 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:36,252 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:36,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-13 12:51:36,252 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:36,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:36,252 INFO L82 PathProgramCache]: Analyzing trace with hash 826935466, now seen corresponding path program 32 times [2021-08-13 12:51:36,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:36,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010306796] [2021-08-13 12:51:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:36,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:36,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:36,267 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:36,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:36,274 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:36,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:36,284 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:36,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:36,298 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:36,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:36,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:36,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010306796] [2021-08-13 12:51:36,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010306796] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:36,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:36,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:36,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395730783] [2021-08-13 12:51:36,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:36,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:36,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:36,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:36,314 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:36,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 249 transitions, 15052 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:36,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:36,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:36,449 INFO L129 PetriNetUnfolder]: 17/673 cut-off events. [2021-08-13 12:51:36,449 INFO L130 PetriNetUnfolder]: For 32789/36306 co-relation queries the response was YES. [2021-08-13 12:51:36,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8673 conditions, 673 events. 17/673 cut-off events. For 32789/36306 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7386 event pairs, 0 based on Foata normal form. 32/689 useless extension candidates. Maximal degree in co-relation 7328. Up to 134 conditions per place. [2021-08-13 12:51:36,452 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 104 selfloop transitions, 46 changer transitions 83/248 dead transitions. [2021-08-13 12:51:36,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 248 transitions, 15454 flow [2021-08-13 12:51:36,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:36,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:36,453 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:36,453 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:36,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,454 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,455 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 200 predicate places. [2021-08-13 12:51:36,455 INFO L482 AbstractCegarLoop]: Abstraction has has 237 places, 248 transitions, 15454 flow [2021-08-13 12:51:36,455 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,455 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:36,455 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:36,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-13 12:51:36,455 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:36,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:36,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1823392822, now seen corresponding path program 33 times [2021-08-13 12:51:36,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:36,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324345542] [2021-08-13 12:51:36,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:36,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:36,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:36,469 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:36,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:36,483 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:36,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:36,498 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:36,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:36,513 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:36,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:36,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:36,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324345542] [2021-08-13 12:51:36,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324345542] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:36,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:36,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:36,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820190497] [2021-08-13 12:51:36,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:36,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:36,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:36,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:36,529 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:36,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 248 transitions, 15454 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:36,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:36,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:36,669 INFO L129 PetriNetUnfolder]: 16/748 cut-off events. [2021-08-13 12:51:36,669 INFO L130 PetriNetUnfolder]: For 38592/42307 co-relation queries the response was YES. [2021-08-13 12:51:36,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9832 conditions, 748 events. 16/748 cut-off events. For 38592/42307 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8487 event pairs, 0 based on Foata normal form. 32/762 useless extension candidates. Maximal degree in co-relation 8228. Up to 142 conditions per place. [2021-08-13 12:51:36,672 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 119 selfloop transitions, 53 changer transitions 85/272 dead transitions. [2021-08-13 12:51:36,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 272 transitions, 17552 flow [2021-08-13 12:51:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:36,673 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:36,673 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:36,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,675 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,675 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 206 predicate places. [2021-08-13 12:51:36,675 INFO L482 AbstractCegarLoop]: Abstraction has has 243 places, 272 transitions, 17552 flow [2021-08-13 12:51:36,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,675 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:36,675 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:36,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-13 12:51:36,675 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:36,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:36,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1020572466, now seen corresponding path program 34 times [2021-08-13 12:51:36,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:36,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800621314] [2021-08-13 12:51:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:36,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:36,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:36,698 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:36,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:36,705 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:36,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:36,715 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:36,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:36,731 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:36,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:36,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:36,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800621314] [2021-08-13 12:51:36,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800621314] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:36,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:36,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:36,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975207393] [2021-08-13 12:51:36,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:36,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:36,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:36,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:36,751 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:36,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 272 transitions, 17552 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:36,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:36,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:36,946 INFO L129 PetriNetUnfolder]: 16/747 cut-off events. [2021-08-13 12:51:36,946 INFO L130 PetriNetUnfolder]: For 40107/43977 co-relation queries the response was YES. [2021-08-13 12:51:36,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10055 conditions, 747 events. 16/747 cut-off events. For 40107/43977 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8445 event pairs, 0 based on Foata normal form. 45/774 useless extension candidates. Maximal degree in co-relation 8446. Up to 141 conditions per place. [2021-08-13 12:51:36,950 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 116 selfloop transitions, 51 changer transitions 89/271 dead transitions. [2021-08-13 12:51:36,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 271 transitions, 17996 flow [2021-08-13 12:51:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:36,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:36,951 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:36,951 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:36,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:36,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,953 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,953 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 212 predicate places. [2021-08-13 12:51:36,953 INFO L482 AbstractCegarLoop]: Abstraction has has 249 places, 271 transitions, 17996 flow [2021-08-13 12:51:36,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:36,953 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:36,953 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:36,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-13 12:51:36,954 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:36,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:36,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1617470204, now seen corresponding path program 35 times [2021-08-13 12:51:36,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:36,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549333959] [2021-08-13 12:51:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:36,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:36,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:36,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:36,971 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:36,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:36,985 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:36,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:36,998 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:36,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:37,014 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:37,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:37,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:37,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549333959] [2021-08-13 12:51:37,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549333959] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:37,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:37,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:37,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699282878] [2021-08-13 12:51:37,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:37,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:37,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:37,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:37,033 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:37,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 271 transitions, 17996 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:37,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:37,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:37,201 INFO L129 PetriNetUnfolder]: 16/746 cut-off events. [2021-08-13 12:51:37,201 INFO L130 PetriNetUnfolder]: For 41169/44995 co-relation queries the response was YES. [2021-08-13 12:51:37,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10276 conditions, 746 events. 16/746 cut-off events. For 41169/44995 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8431 event pairs, 0 based on Foata normal form. 38/767 useless extension candidates. Maximal degree in co-relation 8664. Up to 140 conditions per place. [2021-08-13 12:51:37,204 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 113 selfloop transitions, 51 changer transitions 91/270 dead transitions. [2021-08-13 12:51:37,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 270 transitions, 18436 flow [2021-08-13 12:51:37,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:37,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:37,206 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:37,206 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:37,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:37,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:37,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:37,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,207 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,207 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 218 predicate places. [2021-08-13 12:51:37,207 INFO L482 AbstractCegarLoop]: Abstraction has has 255 places, 270 transitions, 18436 flow [2021-08-13 12:51:37,207 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,207 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:37,207 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:37,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-13 12:51:37,207 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:37,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:37,208 INFO L82 PathProgramCache]: Analyzing trace with hash 335256220, now seen corresponding path program 36 times [2021-08-13 12:51:37,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:37,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990812386] [2021-08-13 12:51:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:37,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:37,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:37,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:37,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:37,222 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:37,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:37,236 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:37,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:37,248 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:37,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:37,263 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:37,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:37,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:37,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990812386] [2021-08-13 12:51:37,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990812386] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:37,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:37,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:37,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441643763] [2021-08-13 12:51:37,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:37,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:37,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:37,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:37,280 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:37,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 270 transitions, 18436 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:37,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:37,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:37,456 INFO L129 PetriNetUnfolder]: 16/745 cut-off events. [2021-08-13 12:51:37,456 INFO L130 PetriNetUnfolder]: For 38580/40678 co-relation queries the response was YES. [2021-08-13 12:51:37,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10495 conditions, 745 events. 16/745 cut-off events. For 38580/40678 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8439 event pairs, 0 based on Foata normal form. 28/755 useless extension candidates. Maximal degree in co-relation 8882. Up to 139 conditions per place. [2021-08-13 12:51:37,459 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 49 changer transitions 94/269 dead transitions. [2021-08-13 12:51:37,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 269 transitions, 18872 flow [2021-08-13 12:51:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:37,460 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:37,460 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:37,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:37,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:37,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:37,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,462 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,462 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 224 predicate places. [2021-08-13 12:51:37,462 INFO L482 AbstractCegarLoop]: Abstraction has has 261 places, 269 transitions, 18872 flow [2021-08-13 12:51:37,462 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,462 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:37,462 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:37,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-13 12:51:37,462 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:37,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:37,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1904007400, now seen corresponding path program 37 times [2021-08-13 12:51:37,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:37,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876850058] [2021-08-13 12:51:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:37,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:37,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:37,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:37,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:37,476 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:37,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:37,488 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:37,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:37,504 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:37,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:37,518 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:37,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:37,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:37,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876850058] [2021-08-13 12:51:37,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876850058] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:37,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:37,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:37,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971946534] [2021-08-13 12:51:37,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:37,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:37,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:37,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:37,533 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:37,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 269 transitions, 18872 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:37,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:37,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:37,685 INFO L129 PetriNetUnfolder]: 15/753 cut-off events. [2021-08-13 12:51:37,685 INFO L130 PetriNetUnfolder]: For 40918/43118 co-relation queries the response was YES. [2021-08-13 12:51:37,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10804 conditions, 753 events. 15/753 cut-off events. For 40918/43118 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8572 event pairs, 0 based on Foata normal form. 28/763 useless extension candidates. Maximal degree in co-relation 9151. Up to 139 conditions per place. [2021-08-13 12:51:37,688 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 47 changer transitions 97/270 dead transitions. [2021-08-13 12:51:37,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 270 transitions, 19456 flow [2021-08-13 12:51:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:37,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:51:37,689 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:51:37,689 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:51:37,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:51:37,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:37,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:51:37,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,690 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,690 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 230 predicate places. [2021-08-13 12:51:37,690 INFO L482 AbstractCegarLoop]: Abstraction has has 267 places, 270 transitions, 19456 flow [2021-08-13 12:51:37,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,691 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:37,691 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:37,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-13 12:51:37,691 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:37,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:37,691 INFO L82 PathProgramCache]: Analyzing trace with hash 937191624, now seen corresponding path program 38 times [2021-08-13 12:51:37,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:37,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600015436] [2021-08-13 12:51:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:37,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:37,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:37,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:37,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:37,704 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:37,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:37,716 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:37,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:37,734 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:37,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:37,748 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:37,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:37,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:37,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600015436] [2021-08-13 12:51:37,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600015436] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:37,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:37,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:37,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408719835] [2021-08-13 12:51:37,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:37,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:37,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:37,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:37,764 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:37,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 270 transitions, 19456 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:37,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:37,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:37,948 INFO L129 PetriNetUnfolder]: 13/782 cut-off events. [2021-08-13 12:51:37,948 INFO L130 PetriNetUnfolder]: For 51364/55909 co-relation queries the response was YES. [2021-08-13 12:51:37,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11382 conditions, 782 events. 13/782 cut-off events. For 51364/55909 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8988 event pairs, 0 based on Foata normal form. 42/806 useless extension candidates. Maximal degree in co-relation 9605. Up to 141 conditions per place. [2021-08-13 12:51:37,951 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 114 selfloop transitions, 49 changer transitions 99/277 dead transitions. [2021-08-13 12:51:37,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 277 transitions, 20512 flow [2021-08-13 12:51:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:37,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:37,953 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:37,953 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:37,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:37,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:37,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:37,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,954 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,954 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 236 predicate places. [2021-08-13 12:51:37,954 INFO L482 AbstractCegarLoop]: Abstraction has has 273 places, 277 transitions, 20512 flow [2021-08-13 12:51:37,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:37,954 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:37,954 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:37,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-13 12:51:37,954 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:37,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:37,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1474059456, now seen corresponding path program 39 times [2021-08-13 12:51:37,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:37,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771546028] [2021-08-13 12:51:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:37,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:37,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:37,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:37,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:37,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:37,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:37,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:37,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:37,999 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:37,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:38,017 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:38,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:38,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:38,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771546028] [2021-08-13 12:51:38,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771546028] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:38,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:38,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:38,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429248654] [2021-08-13 12:51:38,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:38,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:38,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:38,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:38,032 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:38,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 277 transitions, 20512 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:38,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:38,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:38,213 INFO L129 PetriNetUnfolder]: 13/781 cut-off events. [2021-08-13 12:51:38,213 INFO L130 PetriNetUnfolder]: For 53630/58357 co-relation queries the response was YES. [2021-08-13 12:51:38,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11605 conditions, 781 events. 13/781 cut-off events. For 53630/58357 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9010 event pairs, 0 based on Foata normal form. 42/805 useless extension candidates. Maximal degree in co-relation 9829. Up to 140 conditions per place. [2021-08-13 12:51:38,216 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 47 changer transitions 103/276 dead transitions. [2021-08-13 12:51:38,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 276 transitions, 20956 flow [2021-08-13 12:51:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:38,217 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:38,217 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:38,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:38,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:38,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:38,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,218 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,218 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 242 predicate places. [2021-08-13 12:51:38,219 INFO L482 AbstractCegarLoop]: Abstraction has has 279 places, 276 transitions, 20956 flow [2021-08-13 12:51:38,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,219 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:38,219 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:38,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-13 12:51:38,219 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:38,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:38,219 INFO L82 PathProgramCache]: Analyzing trace with hash -831164100, now seen corresponding path program 40 times [2021-08-13 12:51:38,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:38,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269191879] [2021-08-13 12:51:38,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:38,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:38,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:38,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:38,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:38,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:38,249 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:38,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:38,263 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:38,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:38,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:38,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269191879] [2021-08-13 12:51:38,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269191879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:38,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:38,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:38,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008232993] [2021-08-13 12:51:38,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:38,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:38,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:38,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:38,288 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:38,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 276 transitions, 20956 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:38,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:38,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:38,490 INFO L129 PetriNetUnfolder]: 11/866 cut-off events. [2021-08-13 12:51:38,491 INFO L130 PetriNetUnfolder]: For 62266/67175 co-relation queries the response was YES. [2021-08-13 12:51:38,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13061 conditions, 866 events. 11/866 cut-off events. For 62266/67175 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10295 event pairs, 0 based on Foata normal form. 28/875 useless extension candidates. Maximal degree in co-relation 10936. Up to 152 conditions per place. [2021-08-13 12:51:38,494 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 126 selfloop transitions, 56 changer transitions 105/302 dead transitions. [2021-08-13 12:51:38,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 302 transitions, 23610 flow [2021-08-13 12:51:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:38,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:38,495 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:38,495 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:38,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:38,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:38,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:38,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,496 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,496 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 248 predicate places. [2021-08-13 12:51:38,496 INFO L482 AbstractCegarLoop]: Abstraction has has 285 places, 302 transitions, 23610 flow [2021-08-13 12:51:38,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,496 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:38,496 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:38,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-13 12:51:38,496 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:38,497 INFO L82 PathProgramCache]: Analyzing trace with hash -978970892, now seen corresponding path program 41 times [2021-08-13 12:51:38,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:38,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622323797] [2021-08-13 12:51:38,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:38,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:38,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:38,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:38,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:38,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:38,531 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:38,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:38,545 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:38,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:38,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:38,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622323797] [2021-08-13 12:51:38,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622323797] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:38,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:38,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:38,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179343456] [2021-08-13 12:51:38,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:38,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:38,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:38,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:38,563 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:38,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 302 transitions, 23610 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:38,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:38,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:38,806 INFO L129 PetriNetUnfolder]: 11/865 cut-off events. [2021-08-13 12:51:38,806 INFO L130 PetriNetUnfolder]: For 63199/68123 co-relation queries the response was YES. [2021-08-13 12:51:38,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13307 conditions, 865 events. 11/865 cut-off events. For 63199/68123 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10261 event pairs, 0 based on Foata normal form. 24/871 useless extension candidates. Maximal degree in co-relation 11179. Up to 151 conditions per place. [2021-08-13 12:51:38,809 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 123 selfloop transitions, 55 changer transitions 108/301 dead transitions. [2021-08-13 12:51:38,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 301 transitions, 24100 flow [2021-08-13 12:51:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:38,810 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:38,810 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:38,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:38,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:38,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:38,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,811 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,811 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 254 predicate places. [2021-08-13 12:51:38,811 INFO L482 AbstractCegarLoop]: Abstraction has has 291 places, 301 transitions, 24100 flow [2021-08-13 12:51:38,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,811 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:38,811 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:38,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-13 12:51:38,811 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:38,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:38,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1332942398, now seen corresponding path program 42 times [2021-08-13 12:51:38,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:38,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601983200] [2021-08-13 12:51:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:38,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:38,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:38,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:38,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:38,839 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:38,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:38,853 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:38,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:38,867 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:38,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:38,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:38,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601983200] [2021-08-13 12:51:38,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601983200] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:38,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:38,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:38,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093438403] [2021-08-13 12:51:38,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:38,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:38,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:38,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:38,881 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:38,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 301 transitions, 24100 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:38,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:38,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:38,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:39,067 INFO L129 PetriNetUnfolder]: 11/864 cut-off events. [2021-08-13 12:51:39,067 INFO L130 PetriNetUnfolder]: For 65791/70943 co-relation queries the response was YES. [2021-08-13 12:51:39,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13551 conditions, 864 events. 11/864 cut-off events. For 65791/70943 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10224 event pairs, 0 based on Foata normal form. 24/870 useless extension candidates. Maximal degree in co-relation 11422. Up to 150 conditions per place. [2021-08-13 12:51:39,071 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 122 selfloop transitions, 53 changer transitions 110/300 dead transitions. [2021-08-13 12:51:39,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 300 transitions, 24586 flow [2021-08-13 12:51:39,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:39,071 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:39,072 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:39,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:39,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:39,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:39,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,073 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,073 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 260 predicate places. [2021-08-13 12:51:39,073 INFO L482 AbstractCegarLoop]: Abstraction has has 297 places, 300 transitions, 24586 flow [2021-08-13 12:51:39,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,073 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:39,073 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:39,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-13 12:51:39,073 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:39,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:39,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1095649746, now seen corresponding path program 43 times [2021-08-13 12:51:39,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:39,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262139354] [2021-08-13 12:51:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:39,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:39,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:39,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:39,092 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:39,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:39,102 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:39,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:39,117 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:39,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:39,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:39,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262139354] [2021-08-13 12:51:39,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262139354] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:39,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:39,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:39,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261653519] [2021-08-13 12:51:39,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:39,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:39,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:39,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:39,134 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:39,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 300 transitions, 24586 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:39,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:39,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:39,336 INFO L129 PetriNetUnfolder]: 9/893 cut-off events. [2021-08-13 12:51:39,336 INFO L130 PetriNetUnfolder]: For 73117/78812 co-relation queries the response was YES. [2021-08-13 12:51:39,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14194 conditions, 893 events. 9/893 cut-off events. For 73117/78812 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10734 event pairs, 0 based on Foata normal form. 28/902 useless extension candidates. Maximal degree in co-relation 11925. Up to 151 conditions per place. [2021-08-13 12:51:39,340 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 128 selfloop transitions, 52 changer transitions 112/307 dead transitions. [2021-08-13 12:51:39,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 307 transitions, 25772 flow [2021-08-13 12:51:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:39,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:39,341 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:39,341 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:39,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:39,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:39,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:39,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,342 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,342 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 266 predicate places. [2021-08-13 12:51:39,342 INFO L482 AbstractCegarLoop]: Abstraction has has 303 places, 307 transitions, 25772 flow [2021-08-13 12:51:39,342 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,342 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:39,342 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:39,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-13 12:51:39,343 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:39,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:39,343 INFO L82 PathProgramCache]: Analyzing trace with hash -155797948, now seen corresponding path program 44 times [2021-08-13 12:51:39,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:39,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599570874] [2021-08-13 12:51:39,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:39,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:39,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:39,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:39,366 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:39,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:39,383 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:39,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:39,403 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:39,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:39,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:39,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:39,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599570874] [2021-08-13 12:51:39,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599570874] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:39,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:39,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:39,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975084045] [2021-08-13 12:51:39,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:39,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:39,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:39,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:39,421 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:39,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 307 transitions, 25772 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:39,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:39,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:39,628 INFO L129 PetriNetUnfolder]: 9/892 cut-off events. [2021-08-13 12:51:39,628 INFO L130 PetriNetUnfolder]: For 76029/81966 co-relation queries the response was YES. [2021-08-13 12:51:39,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14442 conditions, 892 events. 9/892 cut-off events. For 76029/81966 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10725 event pairs, 0 based on Foata normal form. 28/901 useless extension candidates. Maximal degree in co-relation 12173. Up to 151 conditions per place. [2021-08-13 12:51:39,631 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 125 selfloop transitions, 51 changer transitions 115/306 dead transitions. [2021-08-13 12:51:39,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 306 transitions, 26266 flow [2021-08-13 12:51:39,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:51:39,632 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:51:39,632 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:51:39,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:51:39,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:39,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:51:39,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,633 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,633 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 272 predicate places. [2021-08-13 12:51:39,634 INFO L482 AbstractCegarLoop]: Abstraction has has 309 places, 306 transitions, 26266 flow [2021-08-13 12:51:39,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,634 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:39,634 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:39,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-13 12:51:39,634 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:39,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:39,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1536065498, now seen corresponding path program 45 times [2021-08-13 12:51:39,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:39,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391372510] [2021-08-13 12:51:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:39,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:39,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:39,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:39,654 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:39,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:39,664 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:39,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:39,712 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:39,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:39,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:39,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:39,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391372510] [2021-08-13 12:51:39,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391372510] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:39,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:39,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:39,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696803985] [2021-08-13 12:51:39,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:39,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:39,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:39,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:39,728 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:39,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 306 transitions, 26266 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:39,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:39,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:39,945 INFO L129 PetriNetUnfolder]: 9/891 cut-off events. [2021-08-13 12:51:39,945 INFO L130 PetriNetUnfolder]: For 78980/85159 co-relation queries the response was YES. [2021-08-13 12:51:39,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14688 conditions, 891 events. 9/891 cut-off events. For 78980/85159 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10677 event pairs, 0 based on Foata normal form. 28/900 useless extension candidates. Maximal degree in co-relation 12421. Up to 151 conditions per place. [2021-08-13 12:51:39,949 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 122 selfloop transitions, 49 changer transitions 119/305 dead transitions. [2021-08-13 12:51:39,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 305 transitions, 26756 flow [2021-08-13 12:51:39,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:39,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:39,949 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:39,950 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:39,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:39,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:39,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:39,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,950 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,951 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 278 predicate places. [2021-08-13 12:51:39,951 INFO L482 AbstractCegarLoop]: Abstraction has has 315 places, 305 transitions, 26756 flow [2021-08-13 12:51:39,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:39,951 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:39,951 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:39,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-13 12:51:39,951 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:39,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:39,951 INFO L82 PathProgramCache]: Analyzing trace with hash -643498132, now seen corresponding path program 46 times [2021-08-13 12:51:39,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:39,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418889673] [2021-08-13 12:51:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:39,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:39,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:39,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:39,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:39,971 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:39,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:39,981 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:39,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:39,996 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:39,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:40,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:40,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418889673] [2021-08-13 12:51:40,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418889673] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:40,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:40,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:40,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094214100] [2021-08-13 12:51:40,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:40,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:40,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:40,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:40,014 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:40,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 305 transitions, 26756 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:40,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:40,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:40,266 INFO L129 PetriNetUnfolder]: 5/1006 cut-off events. [2021-08-13 12:51:40,266 INFO L130 PetriNetUnfolder]: For 82870/86232 co-relation queries the response was YES. [2021-08-13 12:51:40,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16754 conditions, 1006 events. 5/1006 cut-off events. For 82870/86232 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12467 event pairs, 0 based on Foata normal form. 19/1005 useless extension candidates. Maximal degree in co-relation 13941. Up to 160 conditions per place. [2021-08-13 12:51:40,269 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 143 selfloop transitions, 60 changer transitions 121/339 dead transitions. [2021-08-13 12:51:40,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 339 transitions, 30532 flow [2021-08-13 12:51:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:40,270 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:40,270 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:40,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:40,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:40,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:40,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,271 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,271 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 284 predicate places. [2021-08-13 12:51:40,271 INFO L482 AbstractCegarLoop]: Abstraction has has 321 places, 339 transitions, 30532 flow [2021-08-13 12:51:40,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,272 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:40,272 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:40,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-13 12:51:40,272 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:40,272 INFO L82 PathProgramCache]: Analyzing trace with hash 669219074, now seen corresponding path program 47 times [2021-08-13 12:51:40,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:40,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297349825] [2021-08-13 12:51:40,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:40,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:40,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:40,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:40,291 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:40,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:40,302 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:40,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:40,320 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:40,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:40,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:40,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297349825] [2021-08-13 12:51:40,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297349825] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:40,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:40,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:40,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017803218] [2021-08-13 12:51:40,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:40,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:40,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:40,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:40,335 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:40,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 339 transitions, 30532 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:40,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:40,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:40,561 INFO L129 PetriNetUnfolder]: 5/1005 cut-off events. [2021-08-13 12:51:40,561 INFO L130 PetriNetUnfolder]: For 85789/89289 co-relation queries the response was YES. [2021-08-13 12:51:40,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17031 conditions, 1005 events. 5/1005 cut-off events. For 85789/89289 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12489 event pairs, 0 based on Foata normal form. 19/1004 useless extension candidates. Maximal degree in co-relation 14213. Up to 160 conditions per place. [2021-08-13 12:51:40,565 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 142 selfloop transitions, 57 changer transitions 124/338 dead transitions. [2021-08-13 12:51:40,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 338 transitions, 31084 flow [2021-08-13 12:51:40,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:40,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:40,566 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:40,566 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:40,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:40,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:40,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:40,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,567 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,567 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 290 predicate places. [2021-08-13 12:51:40,567 INFO L482 AbstractCegarLoop]: Abstraction has has 327 places, 338 transitions, 31084 flow [2021-08-13 12:51:40,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,567 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:40,568 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:40,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-13 12:51:40,568 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:40,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:40,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1895954224, now seen corresponding path program 48 times [2021-08-13 12:51:40,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:40,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759708076] [2021-08-13 12:51:40,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:40,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:40,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:40,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:40,587 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:40,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:40,605 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:40,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:40,666 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:40,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:40,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:40,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759708076] [2021-08-13 12:51:40,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759708076] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:40,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:40,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:40,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240518311] [2021-08-13 12:51:40,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:40,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:40,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:40,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:40,686 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:40,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 338 transitions, 31084 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:40,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:40,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:40,965 INFO L129 PetriNetUnfolder]: 5/1004 cut-off events. [2021-08-13 12:51:40,965 INFO L130 PetriNetUnfolder]: For 84598/87765 co-relation queries the response was YES. [2021-08-13 12:51:40,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17306 conditions, 1004 events. 5/1004 cut-off events. For 84598/87765 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12441 event pairs, 0 based on Foata normal form. 15/1000 useless extension candidates. Maximal degree in co-relation 14485. Up to 159 conditions per place. [2021-08-13 12:51:40,969 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 139 selfloop transitions, 57 changer transitions 126/337 dead transitions. [2021-08-13 12:51:40,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 337 transitions, 31632 flow [2021-08-13 12:51:40,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:40,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:40,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:40,970 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:40,970 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:40,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:40,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:40,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:40,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,971 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,971 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 296 predicate places. [2021-08-13 12:51:40,971 INFO L482 AbstractCegarLoop]: Abstraction has has 333 places, 337 transitions, 31632 flow [2021-08-13 12:51:40,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:40,971 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:40,972 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:40,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-13 12:51:40,972 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:40,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:40,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1640814514, now seen corresponding path program 49 times [2021-08-13 12:51:40,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:40,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377820780] [2021-08-13 12:51:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:40,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:40,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:40,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:40,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:40,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:40,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:41,013 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:41,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:41,037 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:41,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:41,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:41,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377820780] [2021-08-13 12:51:41,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377820780] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:41,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:41,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:41,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116518998] [2021-08-13 12:51:41,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:41,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:41,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:41,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:41,054 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:41,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 337 transitions, 31632 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:41,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:41,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:41,334 INFO L129 PetriNetUnfolder]: 5/1003 cut-off events. [2021-08-13 12:51:41,334 INFO L130 PetriNetUnfolder]: For 104206/111656 co-relation queries the response was YES. [2021-08-13 12:51:41,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17579 conditions, 1003 events. 5/1003 cut-off events. For 104206/111656 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12453 event pairs, 0 based on Foata normal form. 24/1007 useless extension candidates. Maximal degree in co-relation 14757. Up to 159 conditions per place. [2021-08-13 12:51:41,338 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 137 selfloop transitions, 55 changer transitions 129/336 dead transitions. [2021-08-13 12:51:41,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 336 transitions, 32176 flow [2021-08-13 12:51:41,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:41,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:41,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:41,339 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:41,339 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:41,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:41,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:41,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:41,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,340 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,340 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 302 predicate places. [2021-08-13 12:51:41,340 INFO L482 AbstractCegarLoop]: Abstraction has has 339 places, 336 transitions, 32176 flow [2021-08-13 12:51:41,340 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,340 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:41,340 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:41,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-13 12:51:41,341 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:41,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:41,341 INFO L82 PathProgramCache]: Analyzing trace with hash 2031527616, now seen corresponding path program 50 times [2021-08-13 12:51:41,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:41,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87511419] [2021-08-13 12:51:41,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:41,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:41,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:41,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:41,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:41,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:41,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:41,363 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:41,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:41,374 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:41,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:41,389 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:41,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:41,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:41,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87511419] [2021-08-13 12:51:41,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87511419] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:41,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:41,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:41,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494670161] [2021-08-13 12:51:41,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:41,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:41,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:41,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:41,406 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:41,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 336 transitions, 32176 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:41,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:41,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:41,688 INFO L129 PetriNetUnfolder]: 5/1002 cut-off events. [2021-08-13 12:51:41,688 INFO L130 PetriNetUnfolder]: For 107877/115593 co-relation queries the response was YES. [2021-08-13 12:51:41,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17850 conditions, 1002 events. 5/1002 cut-off events. For 107877/115593 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12425 event pairs, 0 based on Foata normal form. 24/1006 useless extension candidates. Maximal degree in co-relation 15029. Up to 158 conditions per place. [2021-08-13 12:51:41,692 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 131 selfloop transitions, 58 changer transitions 131/335 dead transitions. [2021-08-13 12:51:41,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 335 transitions, 32716 flow [2021-08-13 12:51:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:41,694 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:41,694 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:41,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:41,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:41,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:41,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,695 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,695 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 308 predicate places. [2021-08-13 12:51:41,695 INFO L482 AbstractCegarLoop]: Abstraction has has 345 places, 335 transitions, 32716 flow [2021-08-13 12:51:41,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,696 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:41,696 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:41,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-13 12:51:41,696 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:41,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:41,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1403985420, now seen corresponding path program 51 times [2021-08-13 12:51:41,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:41,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761552639] [2021-08-13 12:51:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:41,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:41,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:41,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:41,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:41,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:41,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:41,714 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:41,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:41,723 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:41,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:41,739 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:41,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:41,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:41,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761552639] [2021-08-13 12:51:41,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761552639] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:41,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:41,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:41,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509039064] [2021-08-13 12:51:41,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:41,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:41,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:41,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:41,755 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:41,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 335 transitions, 32716 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:41,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:41,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:41,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:42,016 INFO L129 PetriNetUnfolder]: 5/1001 cut-off events. [2021-08-13 12:51:42,016 INFO L130 PetriNetUnfolder]: For 92740/96267 co-relation queries the response was YES. [2021-08-13 12:51:42,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18119 conditions, 1001 events. 5/1001 cut-off events. For 92740/96267 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12417 event pairs, 0 based on Foata normal form. 15/997 useless extension candidates. Maximal degree in co-relation 15301. Up to 157 conditions per place. [2021-08-13 12:51:42,020 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 129 selfloop transitions, 54 changer transitions 136/334 dead transitions. [2021-08-13 12:51:42,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 334 transitions, 33252 flow [2021-08-13 12:51:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:42,021 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:42,021 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:42,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:42,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:42,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:42,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,022 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,022 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 314 predicate places. [2021-08-13 12:51:42,022 INFO L482 AbstractCegarLoop]: Abstraction has has 351 places, 334 transitions, 33252 flow [2021-08-13 12:51:42,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,022 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:42,022 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:42,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-13 12:51:42,022 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:42,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:42,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1954331202, now seen corresponding path program 52 times [2021-08-13 12:51:42,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:42,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131606597] [2021-08-13 12:51:42,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:42,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:42,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:42,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:42,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:42,035 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:42,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:42,045 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:42,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:42,060 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:42,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:42,078 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:42,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:42,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:42,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131606597] [2021-08-13 12:51:42,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131606597] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:42,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:42,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:42,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275529783] [2021-08-13 12:51:42,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:42,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:42,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:42,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:42,093 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:42,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 334 transitions, 33252 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:42,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:42,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:42,392 INFO L129 PetriNetUnfolder]: 5/1000 cut-off events. [2021-08-13 12:51:42,392 INFO L130 PetriNetUnfolder]: For 100594/104784 co-relation queries the response was YES. [2021-08-13 12:51:42,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18386 conditions, 1000 events. 5/1000 cut-off events. For 100594/104784 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12403 event pairs, 0 based on Foata normal form. 11/991 useless extension candidates. Maximal degree in co-relation 15573. Up to 157 conditions per place. [2021-08-13 12:51:42,395 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 119 selfloop transitions, 61 changer transitions 138/333 dead transitions. [2021-08-13 12:51:42,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 333 transitions, 33784 flow [2021-08-13 12:51:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:42,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:42,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:42,396 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:42,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:42,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:42,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:42,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:42,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,397 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,397 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 320 predicate places. [2021-08-13 12:51:42,397 INFO L482 AbstractCegarLoop]: Abstraction has has 357 places, 333 transitions, 33784 flow [2021-08-13 12:51:42,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,397 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:42,397 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:42,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-13 12:51:42,398 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:42,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:42,398 INFO L82 PathProgramCache]: Analyzing trace with hash 124709360, now seen corresponding path program 53 times [2021-08-13 12:51:42,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:42,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229654319] [2021-08-13 12:51:42,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:42,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:42,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:42,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:42,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:42,412 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:42,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:42,422 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:42,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:42,439 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:42,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:42,455 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:42,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:42,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:42,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229654319] [2021-08-13 12:51:42,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229654319] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:42,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:42,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:42,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495482606] [2021-08-13 12:51:42,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:42,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:42,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:42,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:42,471 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:42,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 333 transitions, 33784 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:42,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:42,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:42,716 INFO L129 PetriNetUnfolder]: 5/999 cut-off events. [2021-08-13 12:51:42,716 INFO L130 PetriNetUnfolder]: For 96293/99448 co-relation queries the response was YES. [2021-08-13 12:51:42,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18651 conditions, 999 events. 5/999 cut-off events. For 96293/99448 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12398 event pairs, 0 based on Foata normal form. 9/988 useless extension candidates. Maximal degree in co-relation 15845. Up to 157 conditions per place. [2021-08-13 12:51:42,719 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 118 selfloop transitions, 59 changer transitions 140/332 dead transitions. [2021-08-13 12:51:42,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 332 transitions, 34312 flow [2021-08-13 12:51:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:42,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:42,720 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:42,720 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:42,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:42,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:42,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:42,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,721 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,721 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 326 predicate places. [2021-08-13 12:51:42,721 INFO L482 AbstractCegarLoop]: Abstraction has has 363 places, 332 transitions, 34312 flow [2021-08-13 12:51:42,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,721 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:42,722 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:42,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-13 12:51:42,722 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:42,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:42,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2016312754, now seen corresponding path program 54 times [2021-08-13 12:51:42,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:42,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402719234] [2021-08-13 12:51:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:42,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:42,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:42,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:42,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:42,734 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:42,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:42,744 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:42,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:42,753 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:42,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:42,767 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:42,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:42,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:42,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402719234] [2021-08-13 12:51:42,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402719234] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:42,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:42,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:42,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079625466] [2021-08-13 12:51:42,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:42,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:42,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:42,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:42,780 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:42,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 332 transitions, 34312 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:42,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:42,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:42,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:43,025 INFO L129 PetriNetUnfolder]: 5/998 cut-off events. [2021-08-13 12:51:43,025 INFO L130 PetriNetUnfolder]: For 106639/112178 co-relation queries the response was YES. [2021-08-13 12:51:43,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18914 conditions, 998 events. 5/998 cut-off events. For 106639/112178 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12346 event pairs, 0 based on Foata normal form. 16/994 useless extension candidates. Maximal degree in co-relation 16117. Up to 157 conditions per place. [2021-08-13 12:51:43,029 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 117 selfloop transitions, 56 changer transitions 143/331 dead transitions. [2021-08-13 12:51:43,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 331 transitions, 34836 flow [2021-08-13 12:51:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:43,033 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:43,033 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:43,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:43,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:43,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:43,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,034 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,034 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 332 predicate places. [2021-08-13 12:51:43,034 INFO L482 AbstractCegarLoop]: Abstraction has has 369 places, 331 transitions, 34836 flow [2021-08-13 12:51:43,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,034 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:43,034 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:43,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-13 12:51:43,035 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:43,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:43,035 INFO L82 PathProgramCache]: Analyzing trace with hash 2120664084, now seen corresponding path program 55 times [2021-08-13 12:51:43,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:43,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035796672] [2021-08-13 12:51:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:43,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:43,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:43,051 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:43,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:43,063 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:43,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:43,079 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:43,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:43,093 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:43,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:43,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:43,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:43,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035796672] [2021-08-13 12:51:43,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035796672] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:43,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:43,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:43,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005571475] [2021-08-13 12:51:43,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:43,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:43,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:43,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:43,108 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:43,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 331 transitions, 34836 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:43,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:43,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:43,385 INFO L129 PetriNetUnfolder]: 4/1063 cut-off events. [2021-08-13 12:51:43,385 INFO L130 PetriNetUnfolder]: For 118590/124487 co-relation queries the response was YES. [2021-08-13 12:51:43,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20449 conditions, 1063 events. 4/1063 cut-off events. For 118590/124487 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 13354 event pairs, 0 based on Foata normal form. 16/1059 useless extension candidates. Maximal degree in co-relation 17309. Up to 164 conditions per place. [2021-08-13 12:51:43,389 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 136 selfloop transitions, 55 changer transitions 145/351 dead transitions. [2021-08-13 12:51:43,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 351 transitions, 37708 flow [2021-08-13 12:51:43,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:43,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:43,390 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:43,390 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:43,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:43,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:43,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:43,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,391 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,391 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 338 predicate places. [2021-08-13 12:51:43,391 INFO L482 AbstractCegarLoop]: Abstraction has has 375 places, 351 transitions, 37708 flow [2021-08-13 12:51:43,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,391 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:43,392 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:43,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-13 12:51:43,392 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:43,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:43,392 INFO L82 PathProgramCache]: Analyzing trace with hash 237481876, now seen corresponding path program 56 times [2021-08-13 12:51:43,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:43,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877429546] [2021-08-13 12:51:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:43,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:43,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:43,405 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:43,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:43,415 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:43,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:43,429 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:43,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:43,443 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:43,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:43,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:43,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877429546] [2021-08-13 12:51:43,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877429546] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:43,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:43,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:43,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612013361] [2021-08-13 12:51:43,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:43,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:43,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:43,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:43,457 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:43,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 351 transitions, 37708 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:43,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:43,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:43,766 INFO L129 PetriNetUnfolder]: 4/1062 cut-off events. [2021-08-13 12:51:43,767 INFO L130 PetriNetUnfolder]: For 121912/128167 co-relation queries the response was YES. [2021-08-13 12:51:43,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20729 conditions, 1062 events. 4/1062 cut-off events. For 121912/128167 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 13350 event pairs, 0 based on Foata normal form. 16/1058 useless extension candidates. Maximal degree in co-relation 17596. Up to 164 conditions per place. [2021-08-13 12:51:43,771 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 124 selfloop transitions, 63 changer transitions 148/350 dead transitions. [2021-08-13 12:51:43,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 350 transitions, 38266 flow [2021-08-13 12:51:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:43,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:43,777 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:43,777 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:43,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:43,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:43,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:43,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,778 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,779 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 344 predicate places. [2021-08-13 12:51:43,779 INFO L482 AbstractCegarLoop]: Abstraction has has 381 places, 350 transitions, 38266 flow [2021-08-13 12:51:43,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,779 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:43,780 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:43,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-13 12:51:43,780 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:43,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:43,780 INFO L82 PathProgramCache]: Analyzing trace with hash -806072770, now seen corresponding path program 57 times [2021-08-13 12:51:43,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:43,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649219260] [2021-08-13 12:51:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:43,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:43,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:43,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:43,799 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:43,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:43,809 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:43,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:43,825 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:43,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:43,840 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:43,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:43,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:43,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649219260] [2021-08-13 12:51:43,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649219260] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:43,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:43,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:43,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772809888] [2021-08-13 12:51:43,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:43,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:43,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:43,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:43,854 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:43,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 350 transitions, 38266 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:43,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:43,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:43,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:44,104 INFO L129 PetriNetUnfolder]: 4/1061 cut-off events. [2021-08-13 12:51:44,104 INFO L130 PetriNetUnfolder]: For 120941/126783 co-relation queries the response was YES. [2021-08-13 12:51:44,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21007 conditions, 1061 events. 4/1061 cut-off events. For 120941/126783 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 13382 event pairs, 0 based on Foata normal form. 16/1058 useless extension candidates. Maximal degree in co-relation 17883. Up to 164 conditions per place. [2021-08-13 12:51:44,108 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 124 selfloop transitions, 60 changer transitions 150/349 dead transitions. [2021-08-13 12:51:44,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 349 transitions, 38820 flow [2021-08-13 12:51:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:44,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:44,108 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:44,109 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:44,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:44,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:44,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:44,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,109 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,109 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 350 predicate places. [2021-08-13 12:51:44,110 INFO L482 AbstractCegarLoop]: Abstraction has has 387 places, 349 transitions, 38820 flow [2021-08-13 12:51:44,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,110 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:44,110 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:44,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-13 12:51:44,110 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:44,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:44,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1087078294, now seen corresponding path program 58 times [2021-08-13 12:51:44,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:44,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900124473] [2021-08-13 12:51:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:44,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:44,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:44,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:44,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:44,128 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:44,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:44,139 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:44,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:44,150 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:44,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:44,164 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:44,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:44,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:44,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900124473] [2021-08-13 12:51:44,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900124473] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:44,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:44,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:44,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946106287] [2021-08-13 12:51:44,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:44,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:44,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:44,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:44,179 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:44,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 349 transitions, 38820 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:44,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:44,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:44,438 INFO L129 PetriNetUnfolder]: 3/1081 cut-off events. [2021-08-13 12:51:44,438 INFO L130 PetriNetUnfolder]: For 127400/133534 co-relation queries the response was YES. [2021-08-13 12:51:44,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21670 conditions, 1081 events. 3/1081 cut-off events. For 127400/133534 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13666 event pairs, 0 based on Foata normal form. 16/1078 useless extension candidates. Maximal degree in co-relation 18433. Up to 168 conditions per place. [2021-08-13 12:51:44,443 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 135 selfloop transitions, 52 changer transitions 152/354 dead transitions. [2021-08-13 12:51:44,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 354 transitions, 40078 flow [2021-08-13 12:51:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:44,444 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:44,444 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:44,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:44,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:44,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:44,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,445 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,445 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 356 predicate places. [2021-08-13 12:51:44,445 INFO L482 AbstractCegarLoop]: Abstraction has has 393 places, 354 transitions, 40078 flow [2021-08-13 12:51:44,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,445 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:44,446 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:44,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-13 12:51:44,446 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:44,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1377089538, now seen corresponding path program 59 times [2021-08-13 12:51:44,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:44,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178405899] [2021-08-13 12:51:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:44,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:44,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:44,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:44,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:44,472 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:44,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:44,484 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:44,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:44,494 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:44,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:44,516 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:44,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:44,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:44,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178405899] [2021-08-13 12:51:44,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178405899] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:44,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:44,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:44,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138971346] [2021-08-13 12:51:44,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:44,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:44,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:44,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:44,532 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:44,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 354 transitions, 40078 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:44,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:44,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:44,811 INFO L129 PetriNetUnfolder]: 3/1080 cut-off events. [2021-08-13 12:51:44,811 INFO L130 PetriNetUnfolder]: For 135500/142829 co-relation queries the response was YES. [2021-08-13 12:51:44,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21950 conditions, 1080 events. 3/1080 cut-off events. For 135500/142829 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13646 event pairs, 0 based on Foata normal form. 16/1076 useless extension candidates. Maximal degree in co-relation 18724. Up to 167 conditions per place. [2021-08-13 12:51:44,815 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 134 selfloop transitions, 49 changer transitions 155/353 dead transitions. [2021-08-13 12:51:44,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 353 transitions, 40636 flow [2021-08-13 12:51:44,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:44,816 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:44,816 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:44,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:44,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:44,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:44,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,817 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,817 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 362 predicate places. [2021-08-13 12:51:44,817 INFO L482 AbstractCegarLoop]: Abstraction has has 399 places, 353 transitions, 40636 flow [2021-08-13 12:51:44,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,817 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:44,817 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:44,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-13 12:51:44,817 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:44,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:44,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1477429910, now seen corresponding path program 60 times [2021-08-13 12:51:44,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:44,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635063936] [2021-08-13 12:51:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:44,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:44,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:44,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:44,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:44,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:44,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:44,856 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:44,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:44,871 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:44,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:44,889 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:44,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:44,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:44,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635063936] [2021-08-13 12:51:44,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635063936] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:44,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:44,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:44,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574695933] [2021-08-13 12:51:44,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:44,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:44,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:44,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:44,906 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:44,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 353 transitions, 40636 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:44,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:44,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:44,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:45,222 INFO L129 PetriNetUnfolder]: 3/1079 cut-off events. [2021-08-13 12:51:45,222 INFO L130 PetriNetUnfolder]: For 139046/146733 co-relation queries the response was YES. [2021-08-13 12:51:45,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22228 conditions, 1079 events. 3/1079 cut-off events. For 139046/146733 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13623 event pairs, 0 based on Foata normal form. 16/1075 useless extension candidates. Maximal degree in co-relation 19015. Up to 166 conditions per place. [2021-08-13 12:51:45,226 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 126 selfloop transitions, 53 changer transitions 158/352 dead transitions. [2021-08-13 12:51:45,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 352 transitions, 41190 flow [2021-08-13 12:51:45,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:45,226 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:45,226 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:45,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:45,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:45,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:45,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,228 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,228 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 368 predicate places. [2021-08-13 12:51:45,228 INFO L482 AbstractCegarLoop]: Abstraction has has 405 places, 352 transitions, 41190 flow [2021-08-13 12:51:45,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,228 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:45,228 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:45,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-13 12:51:45,228 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:45,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:45,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1115593242, now seen corresponding path program 61 times [2021-08-13 12:51:45,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:45,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026693461] [2021-08-13 12:51:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:45,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:45,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:45,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:45,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:45,244 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:45,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:45,256 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:45,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:45,272 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:45,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:45,286 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:45,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:45,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:45,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026693461] [2021-08-13 12:51:45,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026693461] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:45,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:45,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:45,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601902509] [2021-08-13 12:51:45,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:45,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:45,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:45,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:45,301 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:45,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 352 transitions, 41190 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:45,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:45,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:45,578 INFO L129 PetriNetUnfolder]: 3/1078 cut-off events. [2021-08-13 12:51:45,578 INFO L130 PetriNetUnfolder]: For 142613/150658 co-relation queries the response was YES. [2021-08-13 12:51:45,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22504 conditions, 1078 events. 3/1078 cut-off events. For 142613/150658 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13623 event pairs, 0 based on Foata normal form. 16/1074 useless extension candidates. Maximal degree in co-relation 19306. Up to 165 conditions per place. [2021-08-13 12:51:45,582 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 126 selfloop transitions, 50 changer transitions 160/351 dead transitions. [2021-08-13 12:51:45,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 351 transitions, 41740 flow [2021-08-13 12:51:45,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:45,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:45,583 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:45,583 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:45,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:45,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:45,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:45,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,584 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,584 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 374 predicate places. [2021-08-13 12:51:45,584 INFO L482 AbstractCegarLoop]: Abstraction has has 411 places, 351 transitions, 41740 flow [2021-08-13 12:51:45,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,584 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:45,584 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:45,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-08-13 12:51:45,584 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:45,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:45,584 INFO L82 PathProgramCache]: Analyzing trace with hash 810923940, now seen corresponding path program 62 times [2021-08-13 12:51:45,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:45,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506685481] [2021-08-13 12:51:45,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:45,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:45,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:45,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:45,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:45,601 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:45,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:45,614 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:45,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:45,631 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:45,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:45,649 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:45,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:45,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:45,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506685481] [2021-08-13 12:51:45,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506685481] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:45,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:45,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:45,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292881233] [2021-08-13 12:51:45,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:45,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:45,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:45,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:45,666 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:45,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 351 transitions, 41740 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:45,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:45,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:45,935 INFO L129 PetriNetUnfolder]: 3/1077 cut-off events. [2021-08-13 12:51:45,935 INFO L130 PetriNetUnfolder]: For 134888/140203 co-relation queries the response was YES. [2021-08-13 12:51:45,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22778 conditions, 1077 events. 3/1077 cut-off events. For 134888/140203 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 13660 event pairs, 0 based on Foata normal form. 9/1066 useless extension candidates. Maximal degree in co-relation 19597. Up to 164 conditions per place. [2021-08-13 12:51:45,939 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 124 selfloop transitions, 47 changer transitions 164/350 dead transitions. [2021-08-13 12:51:45,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 350 transitions, 42286 flow [2021-08-13 12:51:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:45,939 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:45,939 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:45,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:45,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:45,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:45,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,940 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,941 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 380 predicate places. [2021-08-13 12:51:45,941 INFO L482 AbstractCegarLoop]: Abstraction has has 417 places, 350 transitions, 42286 flow [2021-08-13 12:51:45,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:45,941 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:45,941 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:45,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-08-13 12:51:45,941 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:45,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:45,941 INFO L82 PathProgramCache]: Analyzing trace with hash 2116194332, now seen corresponding path program 63 times [2021-08-13 12:51:45,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:45,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900587650] [2021-08-13 12:51:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:45,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:45,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:45,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:45,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:45,960 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:45,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:45,969 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:45,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:45,987 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:45,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:46,007 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:46,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:46,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:46,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900587650] [2021-08-13 12:51:46,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900587650] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:46,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:46,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:46,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357532017] [2021-08-13 12:51:46,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:46,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:46,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:46,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:46,023 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:46,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 350 transitions, 42286 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:46,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:46,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:46,308 INFO L129 PetriNetUnfolder]: 3/1076 cut-off events. [2021-08-13 12:51:46,308 INFO L130 PetriNetUnfolder]: For 137955/143510 co-relation queries the response was YES. [2021-08-13 12:51:46,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23050 conditions, 1076 events. 3/1076 cut-off events. For 137955/143510 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 13614 event pairs, 0 based on Foata normal form. 9/1065 useless extension candidates. Maximal degree in co-relation 19888. Up to 164 conditions per place. [2021-08-13 12:51:46,312 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 55 changer transitions 168/349 dead transitions. [2021-08-13 12:51:46,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 349 transitions, 42828 flow [2021-08-13 12:51:46,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:46,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:46,313 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:46,313 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:46,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:46,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:46,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:46,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,314 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,314 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 386 predicate places. [2021-08-13 12:51:46,314 INFO L482 AbstractCegarLoop]: Abstraction has has 423 places, 349 transitions, 42828 flow [2021-08-13 12:51:46,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,314 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:46,314 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:46,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-08-13 12:51:46,314 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:46,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:46,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1066114972, now seen corresponding path program 64 times [2021-08-13 12:51:46,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:46,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306803496] [2021-08-13 12:51:46,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:46,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:46,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:46,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:46,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:46,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:46,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:46,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:46,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:51:46,351 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:46,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:46,366 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:46,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:46,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:46,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306803496] [2021-08-13 12:51:46,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306803496] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:46,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:46,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:46,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101976893] [2021-08-13 12:51:46,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:46,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:46,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:46,380 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:46,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 349 transitions, 42828 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:46,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:46,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:46,758 INFO L129 PetriNetUnfolder]: 3/1075 cut-off events. [2021-08-13 12:51:46,758 INFO L130 PetriNetUnfolder]: For 147014/154900 co-relation queries the response was YES. [2021-08-13 12:51:46,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23320 conditions, 1075 events. 3/1075 cut-off events. For 147014/154900 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13588 event pairs, 0 based on Foata normal form. 16/1072 useless extension candidates. Maximal degree in co-relation 20179. Up to 164 conditions per place. [2021-08-13 12:51:46,762 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 108 selfloop transitions, 55 changer transitions 170/348 dead transitions. [2021-08-13 12:51:46,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 348 transitions, 43366 flow [2021-08-13 12:51:46,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:46,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:46,763 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:46,763 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:46,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:46,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:46,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:46,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,764 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,764 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 392 predicate places. [2021-08-13 12:51:46,764 INFO L482 AbstractCegarLoop]: Abstraction has has 429 places, 348 transitions, 43366 flow [2021-08-13 12:51:46,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,764 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:46,765 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:46,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-08-13 12:51:46,765 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:46,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:46,765 INFO L82 PathProgramCache]: Analyzing trace with hash -792144762, now seen corresponding path program 65 times [2021-08-13 12:51:46,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:46,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543746128] [2021-08-13 12:51:46,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:46,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:46,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:46,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:46,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:46,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:46,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:46,786 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:46,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:46,805 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:46,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:46,821 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:46,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:46,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:46,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543746128] [2021-08-13 12:51:46,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543746128] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:46,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:46,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:46,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417985355] [2021-08-13 12:51:46,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:46,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:46,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:46,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:46,837 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:46,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 348 transitions, 43366 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:46,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:46,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:46,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:47,148 INFO L129 PetriNetUnfolder]: 3/1074 cut-off events. [2021-08-13 12:51:47,148 INFO L130 PetriNetUnfolder]: For 146896/154480 co-relation queries the response was YES. [2021-08-13 12:51:47,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23588 conditions, 1074 events. 3/1074 cut-off events. For 146896/154480 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13608 event pairs, 0 based on Foata normal form. 27/1081 useless extension candidates. Maximal degree in co-relation 20470. Up to 163 conditions per place. [2021-08-13 12:51:47,152 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 106 selfloop transitions, 54 changer transitions 172/347 dead transitions. [2021-08-13 12:51:47,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 347 transitions, 43900 flow [2021-08-13 12:51:47,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:47,153 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:47,153 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:47,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:47,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:47,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:47,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,154 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,154 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 398 predicate places. [2021-08-13 12:51:47,154 INFO L482 AbstractCegarLoop]: Abstraction has has 435 places, 347 transitions, 43900 flow [2021-08-13 12:51:47,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,154 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:47,154 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:47,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-08-13 12:51:47,154 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:47,154 INFO L82 PathProgramCache]: Analyzing trace with hash -2144408832, now seen corresponding path program 66 times [2021-08-13 12:51:47,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:47,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381606518] [2021-08-13 12:51:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:47,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:47,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:47,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:47,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:47,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:47,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:47,174 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:47,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:47,185 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:47,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:47,201 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:47,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:47,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:47,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381606518] [2021-08-13 12:51:47,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381606518] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:47,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:47,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:47,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57906736] [2021-08-13 12:51:47,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:47,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:47,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:47,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:47,222 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:47,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 347 transitions, 43900 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:47,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:47,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:47,557 INFO L129 PetriNetUnfolder]: 3/1073 cut-off events. [2021-08-13 12:51:47,558 INFO L130 PetriNetUnfolder]: For 149998/157848 co-relation queries the response was YES. [2021-08-13 12:51:47,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23854 conditions, 1073 events. 3/1073 cut-off events. For 149998/157848 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13587 event pairs, 0 based on Foata normal form. 27/1080 useless extension candidates. Maximal degree in co-relation 20761. Up to 163 conditions per place. [2021-08-13 12:51:47,561 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 103 selfloop transitions, 53 changer transitions 175/346 dead transitions. [2021-08-13 12:51:47,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 346 transitions, 44430 flow [2021-08-13 12:51:47,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:47,562 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:47,562 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:47,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:47,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:47,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:47,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,563 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,563 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 404 predicate places. [2021-08-13 12:51:47,563 INFO L482 AbstractCegarLoop]: Abstraction has has 441 places, 346 transitions, 44430 flow [2021-08-13 12:51:47,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,563 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:47,564 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:47,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-08-13 12:51:47,564 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:47,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1183084258, now seen corresponding path program 67 times [2021-08-13 12:51:47,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:47,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940934073] [2021-08-13 12:51:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:47,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:47,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:47,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:47,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:47,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:47,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:47,587 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:47,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:47,606 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:47,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:47,621 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:47,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:47,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:47,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940934073] [2021-08-13 12:51:47,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940934073] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:47,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:47,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:47,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464871007] [2021-08-13 12:51:47,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:47,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:47,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:47,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:47,637 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:47,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 346 transitions, 44430 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:47,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:47,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:47,945 INFO L129 PetriNetUnfolder]: 3/1072 cut-off events. [2021-08-13 12:51:47,945 INFO L130 PetriNetUnfolder]: For 156794/165556 co-relation queries the response was YES. [2021-08-13 12:51:47,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24118 conditions, 1072 events. 3/1072 cut-off events. For 156794/165556 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13569 event pairs, 0 based on Foata normal form. 16/1069 useless extension candidates. Maximal degree in co-relation 21052. Up to 163 conditions per place. [2021-08-13 12:51:47,949 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 103 selfloop transitions, 49 changer transitions 178/345 dead transitions. [2021-08-13 12:51:47,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 345 transitions, 44956 flow [2021-08-13 12:51:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:51:47,949 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:51:47,949 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:51:47,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:51:47,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:47,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:51:47,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,951 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,951 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 410 predicate places. [2021-08-13 12:51:47,951 INFO L482 AbstractCegarLoop]: Abstraction has has 447 places, 345 transitions, 44956 flow [2021-08-13 12:51:47,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:47,951 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:47,951 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:47,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-08-13 12:51:47,951 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:47,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:47,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1255957796, now seen corresponding path program 68 times [2021-08-13 12:51:47,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:47,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385997693] [2021-08-13 12:51:47,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:47,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:47,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:47,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:47,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:47,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:47,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:47,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:47,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:51:47,981 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:47,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:47,994 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:47,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:48,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:48,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385997693] [2021-08-13 12:51:48,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385997693] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:48,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:48,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:48,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546126995] [2021-08-13 12:51:48,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:48,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:48,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:48,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:48,009 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:48,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 345 transitions, 44956 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:48,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:48,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:48,289 INFO L129 PetriNetUnfolder]: 3/1071 cut-off events. [2021-08-13 12:51:48,289 INFO L130 PetriNetUnfolder]: For 153110/159865 co-relation queries the response was YES. [2021-08-13 12:51:48,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24380 conditions, 1071 events. 3/1071 cut-off events. For 153110/159865 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 13574 event pairs, 0 based on Foata normal form. 9/1060 useless extension candidates. Maximal degree in co-relation 21343. Up to 163 conditions per place. [2021-08-13 12:51:48,292 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 100 selfloop transitions, 47 changer transitions 182/344 dead transitions. [2021-08-13 12:51:48,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 344 transitions, 45478 flow [2021-08-13 12:51:48,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:51:48,293 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:51:48,293 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:51:48,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:51:48,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:48,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:51:48,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,294 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,294 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 416 predicate places. [2021-08-13 12:51:48,294 INFO L482 AbstractCegarLoop]: Abstraction has has 453 places, 344 transitions, 45478 flow [2021-08-13 12:51:48,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,294 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:48,294 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:48,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-08-13 12:51:48,294 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:48,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:48,295 INFO L82 PathProgramCache]: Analyzing trace with hash -2092745232, now seen corresponding path program 69 times [2021-08-13 12:51:48,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:48,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696912188] [2021-08-13 12:51:48,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:48,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:48,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:48,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:48,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:48,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:48,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:48,312 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:48,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:48,321 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:48,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:48,336 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:48,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:48,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:48,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696912188] [2021-08-13 12:51:48,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696912188] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:48,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:48,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:48,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453646884] [2021-08-13 12:51:48,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:48,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:48,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:48,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:48,350 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:48,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 344 transitions, 45478 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:48,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:48,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:48,785 INFO L129 PetriNetUnfolder]: 1/1157 cut-off events. [2021-08-13 12:51:48,785 INFO L130 PetriNetUnfolder]: For 174955/181950 co-relation queries the response was YES. [2021-08-13 12:51:48,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26661 conditions, 1157 events. 1/1157 cut-off events. For 174955/181950 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14947 event pairs, 0 based on Foata normal form. 9/1146 useless extension candidates. Maximal degree in co-relation 23071. Up to 178 conditions per place. [2021-08-13 12:51:48,788 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 127 selfloop transitions, 44 changer transitions 184/370 dead transitions. [2021-08-13 12:51:48,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 370 transitions, 49776 flow [2021-08-13 12:51:48,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:48,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:48,789 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:48,789 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:48,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:48,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:48,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:48,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,790 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,790 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 422 predicate places. [2021-08-13 12:51:48,790 INFO L482 AbstractCegarLoop]: Abstraction has has 459 places, 370 transitions, 49776 flow [2021-08-13 12:51:48,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,790 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:48,790 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:48,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-08-13 12:51:48,791 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:48,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:48,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1250051154, now seen corresponding path program 70 times [2021-08-13 12:51:48,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:48,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987928885] [2021-08-13 12:51:48,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:48,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:48,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:48,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:48,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:48,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:48,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:48,809 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:48,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:48,819 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:48,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:48,833 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:48,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:48,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:48,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987928885] [2021-08-13 12:51:48,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987928885] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:48,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:48,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:48,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624986143] [2021-08-13 12:51:48,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:48,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:48,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:48,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:48,848 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:48,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 370 transitions, 49776 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:48,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:48,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:48,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:49,175 INFO L129 PetriNetUnfolder]: 1/1156 cut-off events. [2021-08-13 12:51:49,175 INFO L130 PetriNetUnfolder]: For 194589/205856 co-relation queries the response was YES. [2021-08-13 12:51:49,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26946 conditions, 1156 events. 1/1156 cut-off events. For 194589/205856 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14890 event pairs, 0 based on Foata normal form. 16/1152 useless extension candidates. Maximal degree in co-relation 23381. Up to 177 conditions per place. [2021-08-13 12:51:49,179 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 125 selfloop transitions, 42 changer transitions 187/369 dead transitions. [2021-08-13 12:51:49,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 369 transitions, 50344 flow [2021-08-13 12:51:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:49,180 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:49,180 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:49,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:49,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:49,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:49,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,181 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,181 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 428 predicate places. [2021-08-13 12:51:49,181 INFO L482 AbstractCegarLoop]: Abstraction has has 465 places, 369 transitions, 50344 flow [2021-08-13 12:51:49,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,181 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:49,181 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:49,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-08-13 12:51:49,181 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:49,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:49,182 INFO L82 PathProgramCache]: Analyzing trace with hash 113744454, now seen corresponding path program 71 times [2021-08-13 12:51:49,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:49,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294516691] [2021-08-13 12:51:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:49,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:49,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:49,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:49,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:49,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:49,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:49,199 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:49,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:49,215 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:49,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:49,229 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:49,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:49,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:49,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294516691] [2021-08-13 12:51:49,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294516691] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:49,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:49,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:49,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077568158] [2021-08-13 12:51:49,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:49,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:49,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:49,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:49,244 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:49,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 369 transitions, 50344 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:49,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:49,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:49,571 INFO L129 PetriNetUnfolder]: 1/1155 cut-off events. [2021-08-13 12:51:49,571 INFO L130 PetriNetUnfolder]: For 198761/210386 co-relation queries the response was YES. [2021-08-13 12:51:49,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27229 conditions, 1155 events. 1/1155 cut-off events. For 198761/210386 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14841 event pairs, 0 based on Foata normal form. 16/1151 useless extension candidates. Maximal degree in co-relation 23691. Up to 176 conditions per place. [2021-08-13 12:51:49,574 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 118 selfloop transitions, 46 changer transitions 189/368 dead transitions. [2021-08-13 12:51:49,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 368 transitions, 50908 flow [2021-08-13 12:51:49,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:49,575 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:49,575 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:49,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:49,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:49,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:49,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,576 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,576 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 434 predicate places. [2021-08-13 12:51:49,576 INFO L482 AbstractCegarLoop]: Abstraction has has 471 places, 368 transitions, 50908 flow [2021-08-13 12:51:49,576 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,576 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:49,576 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:49,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-08-13 12:51:49,576 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:49,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:49,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1318723572, now seen corresponding path program 72 times [2021-08-13 12:51:49,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:49,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276020803] [2021-08-13 12:51:49,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:49,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:49,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:49,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:49,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:49,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:49,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:49,600 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:49,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:49,615 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:49,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:49,628 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:49,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:49,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:49,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276020803] [2021-08-13 12:51:49,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276020803] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:49,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:49,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:49,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136004258] [2021-08-13 12:51:49,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:49,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:49,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:49,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:49,643 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:49,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 368 transitions, 50908 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:49,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:49,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:49,984 INFO L129 PetriNetUnfolder]: 1/1154 cut-off events. [2021-08-13 12:51:49,984 INFO L130 PetriNetUnfolder]: For 202929/214912 co-relation queries the response was YES. [2021-08-13 12:51:49,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27510 conditions, 1154 events. 1/1154 cut-off events. For 202929/214912 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14866 event pairs, 0 based on Foata normal form. 16/1150 useless extension candidates. Maximal degree in co-relation 24001. Up to 175 conditions per place. [2021-08-13 12:51:49,988 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 116 selfloop transitions, 44 changer transitions 192/367 dead transitions. [2021-08-13 12:51:49,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 367 transitions, 51468 flow [2021-08-13 12:51:49,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:49,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:49,991 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:49,991 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:49,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:49,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:49,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:49,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,992 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,992 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 440 predicate places. [2021-08-13 12:51:49,992 INFO L482 AbstractCegarLoop]: Abstraction has has 477 places, 367 transitions, 51468 flow [2021-08-13 12:51:49,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:49,993 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:49,993 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:49,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-08-13 12:51:49,993 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:49,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:49,993 INFO L82 PathProgramCache]: Analyzing trace with hash 30021204, now seen corresponding path program 73 times [2021-08-13 12:51:49,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:49,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365033868] [2021-08-13 12:51:49,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:50,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:50,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:50,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:50,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:50,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:50,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:50,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:50,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:51:50,021 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:50,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:50,035 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:50,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:50,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:50,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365033868] [2021-08-13 12:51:50,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365033868] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:50,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:50,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:50,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344721685] [2021-08-13 12:51:50,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:50,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:50,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:50,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:50,050 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:50,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 367 transitions, 51468 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:50,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:50,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:50,391 INFO L129 PetriNetUnfolder]: 1/1153 cut-off events. [2021-08-13 12:51:50,391 INFO L130 PetriNetUnfolder]: For 197022/207536 co-relation queries the response was YES. [2021-08-13 12:51:50,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27789 conditions, 1153 events. 1/1153 cut-off events. For 197022/207536 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14838 event pairs, 0 based on Foata normal form. 16/1150 useless extension candidates. Maximal degree in co-relation 24311. Up to 174 conditions per place. [2021-08-13 12:51:50,395 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 114 selfloop transitions, 43 changer transitions 194/366 dead transitions. [2021-08-13 12:51:50,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 366 transitions, 52024 flow [2021-08-13 12:51:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:50,396 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:50,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:50,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:50,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:50,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:50,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,396 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,397 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 446 predicate places. [2021-08-13 12:51:50,397 INFO L482 AbstractCegarLoop]: Abstraction has has 483 places, 366 transitions, 52024 flow [2021-08-13 12:51:50,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,397 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:50,397 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:50,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-08-13 12:51:50,397 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:50,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:50,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1133313126, now seen corresponding path program 74 times [2021-08-13 12:51:50,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:50,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575893806] [2021-08-13 12:51:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:50,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:50,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:50,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:50,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:50,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:50,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:50,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:50,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:51:50,426 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:50,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:50,438 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:50,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:50,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:50,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575893806] [2021-08-13 12:51:50,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575893806] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:50,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:50,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:50,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935108208] [2021-08-13 12:51:50,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:50,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:50,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:50,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:50,456 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:50,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 366 transitions, 52024 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:50,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:50,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:50,884 INFO L129 PetriNetUnfolder]: 1/1152 cut-off events. [2021-08-13 12:51:50,884 INFO L130 PetriNetUnfolder]: For 200695/211501 co-relation queries the response was YES. [2021-08-13 12:51:50,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28066 conditions, 1152 events. 1/1152 cut-off events. For 200695/211501 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14838 event pairs, 0 based on Foata normal form. 16/1149 useless extension candidates. Maximal degree in co-relation 24621. Up to 173 conditions per place. [2021-08-13 12:51:50,888 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 40 changer transitions 199/365 dead transitions. [2021-08-13 12:51:50,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 365 transitions, 52576 flow [2021-08-13 12:51:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:50,888 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:50,889 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:50,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:50,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:50,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:50,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,889 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,889 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 452 predicate places. [2021-08-13 12:51:50,890 INFO L482 AbstractCegarLoop]: Abstraction has has 489 places, 365 transitions, 52576 flow [2021-08-13 12:51:50,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,890 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:50,890 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:50,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-08-13 12:51:50,890 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:50,890 INFO L82 PathProgramCache]: Analyzing trace with hash -473739948, now seen corresponding path program 75 times [2021-08-13 12:51:50,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:50,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047823015] [2021-08-13 12:51:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:50,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:50,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:50,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:50,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:50,907 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:50,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:50,918 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:50,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:50,935 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:50,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:50,949 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:50,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:50,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:50,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047823015] [2021-08-13 12:51:50,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047823015] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:50,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:50,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:50,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545155639] [2021-08-13 12:51:50,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:50,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:50,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:50,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:50,964 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:50,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 365 transitions, 52576 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:50,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:50,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:50,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:51,293 INFO L129 PetriNetUnfolder]: 1/1151 cut-off events. [2021-08-13 12:51:51,293 INFO L130 PetriNetUnfolder]: For 215379/228436 co-relation queries the response was YES. [2021-08-13 12:51:51,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28341 conditions, 1151 events. 1/1151 cut-off events. For 215379/228436 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14803 event pairs, 0 based on Foata normal form. 16/1147 useless extension candidates. Maximal degree in co-relation 24931. Up to 173 conditions per place. [2021-08-13 12:51:51,297 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 98 selfloop transitions, 50 changer transitions 201/364 dead transitions. [2021-08-13 12:51:51,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 364 transitions, 53124 flow [2021-08-13 12:51:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:51,298 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:51,298 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:51,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:51,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:51,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:51,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,299 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,299 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 458 predicate places. [2021-08-13 12:51:51,299 INFO L482 AbstractCegarLoop]: Abstraction has has 495 places, 364 transitions, 53124 flow [2021-08-13 12:51:51,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,299 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:51,299 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:51,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-08-13 12:51:51,299 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:51,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:51,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2102379816, now seen corresponding path program 76 times [2021-08-13 12:51:51,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:51,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67671176] [2021-08-13 12:51:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:51,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:51,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:51,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:51,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:51,311 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:51,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:51,322 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:51,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:51,335 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:51,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:51,348 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:51,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:51,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:51,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67671176] [2021-08-13 12:51:51,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67671176] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:51,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:51,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:51,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265377597] [2021-08-13 12:51:51,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:51,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:51,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:51,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:51,368 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:51,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 364 transitions, 53124 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:51,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:51,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:51,698 INFO L129 PetriNetUnfolder]: 1/1150 cut-off events. [2021-08-13 12:51:51,698 INFO L130 PetriNetUnfolder]: For 196983/207207 co-relation queries the response was YES. [2021-08-13 12:51:51,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28614 conditions, 1150 events. 1/1150 cut-off events. For 196983/207207 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14784 event pairs, 0 based on Foata normal form. 12/1142 useless extension candidates. Maximal degree in co-relation 25241. Up to 173 conditions per place. [2021-08-13 12:51:51,703 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 94 selfloop transitions, 51 changer transitions 203/363 dead transitions. [2021-08-13 12:51:51,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 363 transitions, 53668 flow [2021-08-13 12:51:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:51,704 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:51,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:51,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:51,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:51,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:51,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,705 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,705 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 464 predicate places. [2021-08-13 12:51:51,705 INFO L482 AbstractCegarLoop]: Abstraction has has 501 places, 363 transitions, 53668 flow [2021-08-13 12:51:51,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,705 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:51,705 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:51,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-08-13 12:51:51,706 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:51,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:51,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1433150500, now seen corresponding path program 77 times [2021-08-13 12:51:51,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:51,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301593600] [2021-08-13 12:51:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:51,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:51,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:51,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:51,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:51,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:51,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:51,731 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:51,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:51,748 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:51,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:51,765 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:51,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:51,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:51,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301593600] [2021-08-13 12:51:51,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301593600] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:51,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:51,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:51,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128897232] [2021-08-13 12:51:51,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:51,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:51,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:51,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:51,780 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:51,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 363 transitions, 53668 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:51,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:51,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:51,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:52,114 INFO L129 PetriNetUnfolder]: 1/1149 cut-off events. [2021-08-13 12:51:52,114 INFO L130 PetriNetUnfolder]: For 200262/211052 co-relation queries the response was YES. [2021-08-13 12:51:52,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28885 conditions, 1149 events. 1/1149 cut-off events. For 200262/211052 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14810 event pairs, 0 based on Foata normal form. 12/1141 useless extension candidates. Maximal degree in co-relation 25551. Up to 173 conditions per place. [2021-08-13 12:51:52,118 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 92 selfloop transitions, 50 changer transitions 205/362 dead transitions. [2021-08-13 12:51:52,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 362 transitions, 54208 flow [2021-08-13 12:51:52,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:52,119 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:52,119 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:52,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:52,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:52,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:52,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,119 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,120 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 470 predicate places. [2021-08-13 12:51:52,120 INFO L482 AbstractCegarLoop]: Abstraction has has 507 places, 362 transitions, 54208 flow [2021-08-13 12:51:52,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,120 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:52,120 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:52,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-08-13 12:51:52,120 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:52,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:52,120 INFO L82 PathProgramCache]: Analyzing trace with hash 86529456, now seen corresponding path program 78 times [2021-08-13 12:51:52,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:52,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847110461] [2021-08-13 12:51:52,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:52,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:52,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:52,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:52,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:52,131 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:52,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:52,143 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:52,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:52,158 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:52,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:52,189 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:52,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:52,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:52,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847110461] [2021-08-13 12:51:52,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847110461] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:52,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:52,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:52,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583477265] [2021-08-13 12:51:52,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:52,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:52,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:52,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:52,206 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:52,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 362 transitions, 54208 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:52,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:52,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:52,545 INFO L129 PetriNetUnfolder]: 1/1148 cut-off events. [2021-08-13 12:51:52,545 INFO L130 PetriNetUnfolder]: For 205627/215772 co-relation queries the response was YES. [2021-08-13 12:51:52,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29154 conditions, 1148 events. 1/1148 cut-off events. For 205627/215772 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14782 event pairs, 0 based on Foata normal form. 1/1129 useless extension candidates. Maximal degree in co-relation 25861. Up to 173 conditions per place. [2021-08-13 12:51:52,549 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 91 selfloop transitions, 47 changer transitions 208/361 dead transitions. [2021-08-13 12:51:52,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 361 transitions, 54744 flow [2021-08-13 12:51:52,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:52,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:52,550 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:52,550 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:52,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:52,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:52,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:52,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,551 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,551 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 476 predicate places. [2021-08-13 12:51:52,551 INFO L482 AbstractCegarLoop]: Abstraction has has 513 places, 361 transitions, 54744 flow [2021-08-13 12:51:52,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,551 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:52,551 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:52,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-08-13 12:51:52,552 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:52,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:52,552 INFO L82 PathProgramCache]: Analyzing trace with hash 590805818, now seen corresponding path program 79 times [2021-08-13 12:51:52,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:52,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135084994] [2021-08-13 12:51:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:52,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:52,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:52,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:52,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:52,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:52,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:52,585 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:52,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:52,596 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:52,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:52,610 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:52,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:52,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:52,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135084994] [2021-08-13 12:51:52,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135084994] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:52,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:52,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:52,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85405112] [2021-08-13 12:51:52,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:52,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:52,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:52,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:52,627 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:52,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 361 transitions, 54744 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:52,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:52,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:52,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:53,046 INFO L129 PetriNetUnfolder]: 1/1147 cut-off events. [2021-08-13 12:51:53,046 INFO L130 PetriNetUnfolder]: For 208950/219665 co-relation queries the response was YES. [2021-08-13 12:51:53,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29421 conditions, 1147 events. 1/1147 cut-off events. For 208950/219665 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14792 event pairs, 0 based on Foata normal form. 1/1128 useless extension candidates. Maximal degree in co-relation 26171. Up to 173 conditions per place. [2021-08-13 12:51:53,049 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 90 selfloop transitions, 44 changer transitions 211/360 dead transitions. [2021-08-13 12:51:53,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 360 transitions, 55276 flow [2021-08-13 12:51:53,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:53,050 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:53,050 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:53,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:53,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:53,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:53,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,051 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,051 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 482 predicate places. [2021-08-13 12:51:53,051 INFO L482 AbstractCegarLoop]: Abstraction has has 519 places, 360 transitions, 55276 flow [2021-08-13 12:51:53,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,051 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:53,051 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:53,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-08-13 12:51:53,051 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:53,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:53,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1509660846, now seen corresponding path program 80 times [2021-08-13 12:51:53,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:53,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713310299] [2021-08-13 12:51:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:53,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:53,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:53,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:53,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:53,070 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:53,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:53,079 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:51:53,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:51:53,089 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:53,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:53,102 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:53,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:53,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:53,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713310299] [2021-08-13 12:51:53,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713310299] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:53,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:53,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:53,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102845613] [2021-08-13 12:51:53,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:53,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:53,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:53,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:53,117 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:53,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 360 transitions, 55276 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:53,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:53,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:53,469 INFO L129 PetriNetUnfolder]: 0/1212 cut-off events. [2021-08-13 12:51:53,469 INFO L130 PetriNetUnfolder]: For 215338/225537 co-relation queries the response was YES. [2021-08-13 12:51:53,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31485 conditions, 1212 events. 0/1212 cut-off events. For 215338/225537 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15752 event pairs, 0 based on Foata normal form. 12/1205 useless extension candidates. Maximal degree in co-relation 0. Up to 189 conditions per place. [2021-08-13 12:51:53,473 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 41 changer transitions 213/380 dead transitions. [2021-08-13 12:51:53,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 380 transitions, 59206 flow [2021-08-13 12:51:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:53,474 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:53,474 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:53,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:53,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:53,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:53,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,475 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,475 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 488 predicate places. [2021-08-13 12:51:53,475 INFO L482 AbstractCegarLoop]: Abstraction has has 525 places, 380 transitions, 59206 flow [2021-08-13 12:51:53,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,475 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:53,475 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:53,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-08-13 12:51:53,475 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:53,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:53,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1944895258, now seen corresponding path program 81 times [2021-08-13 12:51:53,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:53,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680230307] [2021-08-13 12:51:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:53,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:53,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:53,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:53,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:53,487 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:53,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:53,498 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:53,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:53,514 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:53,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:53,527 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:53,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:53,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:53,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680230307] [2021-08-13 12:51:53,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680230307] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:53,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:53,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:53,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305718912] [2021-08-13 12:51:53,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:53,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:53,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:53,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:53,546 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:53,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 380 transitions, 59206 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:53,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:53,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:53,943 INFO L129 PetriNetUnfolder]: 0/1211 cut-off events. [2021-08-13 12:51:53,943 INFO L130 PetriNetUnfolder]: For 240952/258136 co-relation queries the response was YES. [2021-08-13 12:51:53,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31769 conditions, 1211 events. 0/1211 cut-off events. For 240952/258136 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15749 event pairs, 0 based on Foata normal form. 1/1192 useless extension candidates. Maximal degree in co-relation 0. Up to 189 conditions per place. [2021-08-13 12:51:53,947 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 96 selfloop transitions, 51 changer transitions 217/379 dead transitions. [2021-08-13 12:51:53,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 379 transitions, 59772 flow [2021-08-13 12:51:53,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:53,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:53,947 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:53,947 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:53,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:53,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:53,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:53,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,948 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,948 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 494 predicate places. [2021-08-13 12:51:53,948 INFO L482 AbstractCegarLoop]: Abstraction has has 531 places, 379 transitions, 59772 flow [2021-08-13 12:51:53,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:53,949 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:53,949 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:53,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-08-13 12:51:53,949 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:53,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:53,949 INFO L82 PathProgramCache]: Analyzing trace with hash -69217132, now seen corresponding path program 82 times [2021-08-13 12:51:53,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:53,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11337081] [2021-08-13 12:51:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:53,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:53,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:53,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:53,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:53,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:53,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:53,966 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:53,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:53,976 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:53,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:53,989 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:53,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:54,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:54,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11337081] [2021-08-13 12:51:54,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11337081] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:54,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:54,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:54,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325875647] [2021-08-13 12:51:54,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:54,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:54,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:54,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:54,004 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:54,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 379 transitions, 59772 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:54,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:54,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:54,405 INFO L129 PetriNetUnfolder]: 0/1210 cut-off events. [2021-08-13 12:51:54,406 INFO L130 PetriNetUnfolder]: For 245176/263458 co-relation queries the response was YES. [2021-08-13 12:51:54,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32051 conditions, 1210 events. 0/1210 cut-off events. For 245176/263458 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15721 event pairs, 0 based on Foata normal form. 1/1191 useless extension candidates. Maximal degree in co-relation 0. Up to 189 conditions per place. [2021-08-13 12:51:54,409 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 92 selfloop transitions, 52 changer transitions 219/378 dead transitions. [2021-08-13 12:51:54,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 378 transitions, 60334 flow [2021-08-13 12:51:54,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:54,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:54,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:54,410 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:54,411 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:54,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:54,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:54,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:54,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,411 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,411 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 500 predicate places. [2021-08-13 12:51:54,412 INFO L482 AbstractCegarLoop]: Abstraction has has 537 places, 378 transitions, 60334 flow [2021-08-13 12:51:54,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,412 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:54,412 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:54,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-08-13 12:51:54,412 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:54,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:54,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1932876026, now seen corresponding path program 83 times [2021-08-13 12:51:54,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:54,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298121985] [2021-08-13 12:51:54,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:54,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:54,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:54,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:54,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:54,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:54,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:54,432 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:54,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:54,447 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:54,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:54,460 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:54,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:54,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:54,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298121985] [2021-08-13 12:51:54,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298121985] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:54,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:54,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:54,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965348244] [2021-08-13 12:51:54,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:54,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:54,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:54,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:54,475 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:54,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 378 transitions, 60334 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:54,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:54,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:54,883 INFO L129 PetriNetUnfolder]: 0/1209 cut-off events. [2021-08-13 12:51:54,884 INFO L130 PetriNetUnfolder]: For 220676/230958 co-relation queries the response was YES. [2021-08-13 12:51:54,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32331 conditions, 1209 events. 0/1209 cut-off events. For 220676/230958 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15721 event pairs, 0 based on Foata normal form. 1/1191 useless extension candidates. Maximal degree in co-relation 0. Up to 189 conditions per place. [2021-08-13 12:51:54,887 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 87 selfloop transitions, 54 changer transitions 221/377 dead transitions. [2021-08-13 12:51:54,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 377 transitions, 60892 flow [2021-08-13 12:51:54,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:54,888 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:54,888 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:54,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:54,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:54,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:54,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,889 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,889 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 506 predicate places. [2021-08-13 12:51:54,889 INFO L482 AbstractCegarLoop]: Abstraction has has 543 places, 377 transitions, 60892 flow [2021-08-13 12:51:54,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,889 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:54,889 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:54,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-08-13 12:51:54,889 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:54,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:54,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1663506578, now seen corresponding path program 84 times [2021-08-13 12:51:54,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:54,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212263753] [2021-08-13 12:51:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:54,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:54,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:54,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:54,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:54,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:54,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:54,911 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:54,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:54,920 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:54,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:54,937 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:54,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:54,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:54,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212263753] [2021-08-13 12:51:54,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212263753] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:54,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:54,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:54,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322589658] [2021-08-13 12:51:54,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:54,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:54,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:54,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:54,952 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:54,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 377 transitions, 60892 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:54,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:54,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:54,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:55,447 INFO L129 PetriNetUnfolder]: 0/1208 cut-off events. [2021-08-13 12:51:55,447 INFO L130 PetriNetUnfolder]: For 246228/259793 co-relation queries the response was YES. [2021-08-13 12:51:55,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32609 conditions, 1208 events. 0/1208 cut-off events. For 246228/259793 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15760 event pairs, 0 based on Foata normal form. 1/1189 useless extension candidates. Maximal degree in co-relation 0. Up to 188 conditions per place. [2021-08-13 12:51:55,450 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 91 selfloop transitions, 46 changer transitions 224/376 dead transitions. [2021-08-13 12:51:55,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 376 transitions, 61446 flow [2021-08-13 12:51:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:51:55,451 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:51:55,451 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:51:55,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:51:55,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:55,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:51:55,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,452 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,452 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 512 predicate places. [2021-08-13 12:51:55,453 INFO L482 AbstractCegarLoop]: Abstraction has has 549 places, 376 transitions, 61446 flow [2021-08-13 12:51:55,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,453 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:55,453 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:55,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-08-13 12:51:55,453 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:55,453 INFO L82 PathProgramCache]: Analyzing trace with hash -751718194, now seen corresponding path program 85 times [2021-08-13 12:51:55,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:55,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235865840] [2021-08-13 12:51:55,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:55,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:55,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:55,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:55,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:55,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:55,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:55,475 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:55,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:55,491 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:55,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:55,506 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:55,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:55,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:55,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235865840] [2021-08-13 12:51:55,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235865840] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:55,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:55,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:55,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733318897] [2021-08-13 12:51:55,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:55,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:55,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:55,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:55,528 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:55,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 376 transitions, 61446 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:55,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:55,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:55,979 INFO L129 PetriNetUnfolder]: 0/1207 cut-off events. [2021-08-13 12:51:55,979 INFO L130 PetriNetUnfolder]: For 249902/264037 co-relation queries the response was YES. [2021-08-13 12:51:55,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32885 conditions, 1207 events. 0/1207 cut-off events. For 249902/264037 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15740 event pairs, 0 based on Foata normal form. 1/1188 useless extension candidates. Maximal degree in co-relation 0. Up to 188 conditions per place. [2021-08-13 12:51:55,982 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 85 selfloop transitions, 48 changer transitions 227/375 dead transitions. [2021-08-13 12:51:55,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 375 transitions, 61996 flow [2021-08-13 12:51:55,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:55,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:51:55,983 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:51:55,983 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:51:55,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:51:55,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:55,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:51:55,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,984 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,984 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 518 predicate places. [2021-08-13 12:51:55,984 INFO L482 AbstractCegarLoop]: Abstraction has has 555 places, 375 transitions, 61996 flow [2021-08-13 12:51:55,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:55,985 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:55,985 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:55,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-08-13 12:51:55,985 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:55,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:55,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1535170020, now seen corresponding path program 86 times [2021-08-13 12:51:55,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:55,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586090424] [2021-08-13 12:51:55,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:55,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:55,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:55,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:55,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:55,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:55,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:56,004 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:56,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:56,015 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:56,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:56,029 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:56,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:56,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:56,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586090424] [2021-08-13 12:51:56,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586090424] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:56,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:56,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:56,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688563781] [2021-08-13 12:51:56,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:56,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:56,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:56,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:56,046 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:56,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 375 transitions, 61996 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:56,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:56,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:56,459 INFO L129 PetriNetUnfolder]: 0/1206 cut-off events. [2021-08-13 12:51:56,460 INFO L130 PetriNetUnfolder]: For 250240/265997 co-relation queries the response was YES. [2021-08-13 12:51:56,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33159 conditions, 1206 events. 0/1206 cut-off events. For 250240/265997 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15672 event pairs, 0 based on Foata normal form. 10/1196 useless extension candidates. Maximal degree in co-relation 0. Up to 187 conditions per place. [2021-08-13 12:51:56,463 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 89 selfloop transitions, 41 changer transitions 229/374 dead transitions. [2021-08-13 12:51:56,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 374 transitions, 62542 flow [2021-08-13 12:51:56,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:56,464 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:56,464 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:56,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:56,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:56,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:56,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,465 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,465 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 524 predicate places. [2021-08-13 12:51:56,465 INFO L482 AbstractCegarLoop]: Abstraction has has 561 places, 374 transitions, 62542 flow [2021-08-13 12:51:56,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,465 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:56,465 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:56,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-08-13 12:51:56,465 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:56,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:56,466 INFO L82 PathProgramCache]: Analyzing trace with hash 475286006, now seen corresponding path program 87 times [2021-08-13 12:51:56,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:56,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136001905] [2021-08-13 12:51:56,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:56,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:56,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:56,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:56,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:56,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:56,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:56,483 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:56,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:56,493 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:56,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:56,507 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:56,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:56,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:56,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136001905] [2021-08-13 12:51:56,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136001905] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:56,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:56,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:56,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033352258] [2021-08-13 12:51:56,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:56,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:56,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:56,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:56,521 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:56,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 374 transitions, 62542 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:56,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:56,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:56,935 INFO L129 PetriNetUnfolder]: 0/1205 cut-off events. [2021-08-13 12:51:56,935 INFO L130 PetriNetUnfolder]: For 253735/270058 co-relation queries the response was YES. [2021-08-13 12:51:56,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33431 conditions, 1205 events. 0/1205 cut-off events. For 253735/270058 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15657 event pairs, 0 based on Foata normal form. 10/1195 useless extension candidates. Maximal degree in co-relation 0. Up to 186 conditions per place. [2021-08-13 12:51:56,938 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 86 selfloop transitions, 39 changer transitions 233/373 dead transitions. [2021-08-13 12:51:56,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 373 transitions, 63084 flow [2021-08-13 12:51:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:56,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:56,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:56,940 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:56,940 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:56,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:56,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:56,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:56,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,941 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,941 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 530 predicate places. [2021-08-13 12:51:56,941 INFO L482 AbstractCegarLoop]: Abstraction has has 567 places, 373 transitions, 63084 flow [2021-08-13 12:51:56,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:56,941 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:56,941 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:56,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-08-13 12:51:56,941 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:56,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:56,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1844237136, now seen corresponding path program 88 times [2021-08-13 12:51:56,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:56,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949229572] [2021-08-13 12:51:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:56,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:56,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:56,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:56,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:56,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:56,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:56,964 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:56,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:56,984 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:56,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:57,000 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:57,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:57,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:57,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949229572] [2021-08-13 12:51:57,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949229572] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:57,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:57,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:57,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040711227] [2021-08-13 12:51:57,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:57,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:57,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:57,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:57,017 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:57,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 373 transitions, 63084 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:57,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:57,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:57,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:57,487 INFO L129 PetriNetUnfolder]: 0/1204 cut-off events. [2021-08-13 12:51:57,487 INFO L130 PetriNetUnfolder]: For 257192/274081 co-relation queries the response was YES. [2021-08-13 12:51:57,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33701 conditions, 1204 events. 0/1204 cut-off events. For 257192/274081 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15649 event pairs, 0 based on Foata normal form. 10/1194 useless extension candidates. Maximal degree in co-relation 0. Up to 186 conditions per place. [2021-08-13 12:51:57,490 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 75 selfloop transitions, 47 changer transitions 235/372 dead transitions. [2021-08-13 12:51:57,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 372 transitions, 63622 flow [2021-08-13 12:51:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:57,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:57,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:57,492 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:57,492 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:57,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:57,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:57,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:57,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:57,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:57,493 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:57,493 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 536 predicate places. [2021-08-13 12:51:57,493 INFO L482 AbstractCegarLoop]: Abstraction has has 573 places, 372 transitions, 63622 flow [2021-08-13 12:51:57,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:57,493 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:57,493 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:57,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-08-13 12:51:57,493 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:57,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:57,493 INFO L82 PathProgramCache]: Analyzing trace with hash -944944970, now seen corresponding path program 89 times [2021-08-13 12:51:57,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:57,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797224498] [2021-08-13 12:51:57,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:57,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:57,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:57,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:57,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:57,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:57,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:57,511 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:57,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:57,520 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:57,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:57,533 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:57,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:57,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:57,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797224498] [2021-08-13 12:51:57,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797224498] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:57,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:57,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:57,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739752283] [2021-08-13 12:51:57,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:57,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:57,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:57,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:57,547 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:57,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 372 transitions, 63622 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:57,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:57,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:57,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:58,092 INFO L129 PetriNetUnfolder]: 0/1203 cut-off events. [2021-08-13 12:51:58,092 INFO L130 PetriNetUnfolder]: For 241212/255784 co-relation queries the response was YES. [2021-08-13 12:51:58,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33969 conditions, 1203 events. 0/1203 cut-off events. For 241212/255784 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15635 event pairs, 0 based on Foata normal form. 10/1194 useless extension candidates. Maximal degree in co-relation 0. Up to 186 conditions per place. [2021-08-13 12:51:58,095 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 76 selfloop transitions, 42 changer transitions 238/371 dead transitions. [2021-08-13 12:51:58,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 371 transitions, 64156 flow [2021-08-13 12:51:58,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:58,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:58,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:51:58,096 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:51:58,096 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:51:58,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:51:58,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:58,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:51:58,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,097 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,097 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 542 predicate places. [2021-08-13 12:51:58,097 INFO L482 AbstractCegarLoop]: Abstraction has has 579 places, 371 transitions, 64156 flow [2021-08-13 12:51:58,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,097 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:58,097 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:58,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-08-13 12:51:58,097 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:58,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:58,097 INFO L82 PathProgramCache]: Analyzing trace with hash -861445480, now seen corresponding path program 90 times [2021-08-13 12:51:58,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:58,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955718266] [2021-08-13 12:51:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:58,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:58,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:58,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:58,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:58,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:58,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:58,119 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:58,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:58,128 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:58,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:58,141 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:58,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:58,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:58,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955718266] [2021-08-13 12:51:58,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955718266] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:58,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:58,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:58,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866873] [2021-08-13 12:51:58,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:58,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:58,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:58,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:58,154 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:58,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 371 transitions, 64156 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:58,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:58,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:58,627 INFO L129 PetriNetUnfolder]: 0/1202 cut-off events. [2021-08-13 12:51:58,627 INFO L130 PetriNetUnfolder]: For 243882/258954 co-relation queries the response was YES. [2021-08-13 12:51:58,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34235 conditions, 1202 events. 0/1202 cut-off events. For 243882/258954 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15635 event pairs, 0 based on Foata normal form. 10/1193 useless extension candidates. Maximal degree in co-relation 0. Up to 185 conditions per place. [2021-08-13 12:51:58,630 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 80 selfloop transitions, 35 changer transitions 240/370 dead transitions. [2021-08-13 12:51:58,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 370 transitions, 64686 flow [2021-08-13 12:51:58,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 12:51:58,631 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 12:51:58,631 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 12:51:58,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 12:51:58,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:58,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 12:51:58,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,633 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,633 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 548 predicate places. [2021-08-13 12:51:58,633 INFO L482 AbstractCegarLoop]: Abstraction has has 585 places, 370 transitions, 64686 flow [2021-08-13 12:51:58,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,634 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:58,634 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:58,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-08-13 12:51:58,634 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:58,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:58,634 INFO L82 PathProgramCache]: Analyzing trace with hash -201879340, now seen corresponding path program 91 times [2021-08-13 12:51:58,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:58,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895993570] [2021-08-13 12:51:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:58,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:58,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:58,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:58,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:58,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:58,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:58,657 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:58,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:58,667 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:58,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:58,680 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:58,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:58,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:58,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895993570] [2021-08-13 12:51:58,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895993570] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:58,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:58,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:58,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789322759] [2021-08-13 12:51:58,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:58,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:58,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:58,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:58,695 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:58,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 370 transitions, 64686 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:58,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:58,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:58,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:59,189 INFO L129 PetriNetUnfolder]: 0/1201 cut-off events. [2021-08-13 12:51:59,190 INFO L130 PetriNetUnfolder]: For 267305/285892 co-relation queries the response was YES. [2021-08-13 12:51:59,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34499 conditions, 1201 events. 0/1201 cut-off events. For 267305/285892 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15587 event pairs, 0 based on Foata normal form. 10/1191 useless extension candidates. Maximal degree in co-relation 0. Up to 184 conditions per place. [2021-08-13 12:51:59,193 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 77 selfloop transitions, 34 changer transitions 243/369 dead transitions. [2021-08-13 12:51:59,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 369 transitions, 65212 flow [2021-08-13 12:51:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:59,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:59,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:51:59,194 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:51:59,194 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:51:59,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:51:59,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:59,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:51:59,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,195 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,195 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 554 predicate places. [2021-08-13 12:51:59,195 INFO L482 AbstractCegarLoop]: Abstraction has has 591 places, 369 transitions, 65212 flow [2021-08-13 12:51:59,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,195 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:59,195 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:59,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-08-13 12:51:59,195 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:59,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1912111388, now seen corresponding path program 92 times [2021-08-13 12:51:59,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:59,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749008282] [2021-08-13 12:51:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:59,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:59,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:59,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:59,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:59,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:59,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:51:59,212 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:51:59,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:51:59,228 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:51:59,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:51:59,242 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:59,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:59,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:59,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749008282] [2021-08-13 12:51:59,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749008282] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:59,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:59,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:59,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503783248] [2021-08-13 12:51:59,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:59,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:59,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:59,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:59,257 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:59,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 369 transitions, 65212 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:59,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:59,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:51:59,737 INFO L129 PetriNetUnfolder]: 0/1200 cut-off events. [2021-08-13 12:51:59,738 INFO L130 PetriNetUnfolder]: For 270580/289733 co-relation queries the response was YES. [2021-08-13 12:51:59,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34761 conditions, 1200 events. 0/1200 cut-off events. For 270580/289733 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15623 event pairs, 0 based on Foata normal form. 10/1190 useless extension candidates. Maximal degree in co-relation 0. Up to 183 conditions per place. [2021-08-13 12:51:59,741 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 68 selfloop transitions, 38 changer transitions 247/368 dead transitions. [2021-08-13 12:51:59,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 368 transitions, 65734 flow [2021-08-13 12:51:59,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:51:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:51:59,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:51:59,742 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:51:59,742 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:51:59,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:51:59,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:51:59,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:51:59,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,743 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,743 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 560 predicate places. [2021-08-13 12:51:59,743 INFO L482 AbstractCegarLoop]: Abstraction has has 597 places, 368 transitions, 65734 flow [2021-08-13 12:51:59,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,743 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:51:59,743 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:51:59,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-08-13 12:51:59,743 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:51:59,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:51:59,743 INFO L82 PathProgramCache]: Analyzing trace with hash -534644962, now seen corresponding path program 93 times [2021-08-13 12:51:59,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:51:59,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615516095] [2021-08-13 12:51:59,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:51:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:51:59,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:59,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:51:59,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:51:59,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:51:59,754 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:51:59,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:51:59,760 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:51:59,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:51:59,773 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:51:59,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:51:59,788 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:51:59,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:51:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:51:59,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:51:59,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615516095] [2021-08-13 12:51:59,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615516095] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:51:59,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:51:59,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:51:59,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593261891] [2021-08-13 12:51:59,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:51:59,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:51:59,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:51:59,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:51:59,803 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:51:59,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 368 transitions, 65734 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:51:59,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:51:59,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:51:59,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:00,548 INFO L129 PetriNetUnfolder]: 0/1199 cut-off events. [2021-08-13 12:52:00,549 INFO L130 PetriNetUnfolder]: For 273802/293521 co-relation queries the response was YES. [2021-08-13 12:52:00,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35021 conditions, 1199 events. 0/1199 cut-off events. For 273802/293521 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15559 event pairs, 0 based on Foata normal form. 10/1189 useless extension candidates. Maximal degree in co-relation 0. Up to 182 conditions per place. [2021-08-13 12:52:00,552 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 80 selfloop transitions, 23 changer transitions 249/367 dead transitions. [2021-08-13 12:52:00,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 367 transitions, 66252 flow [2021-08-13 12:52:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:00,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:00,553 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:00,553 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:00,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:00,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:00,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:00,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:00,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:00,554 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:00,554 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 566 predicate places. [2021-08-13 12:52:00,554 INFO L482 AbstractCegarLoop]: Abstraction has has 603 places, 367 transitions, 66252 flow [2021-08-13 12:52:00,554 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:00,554 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:00,554 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:00,554 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-08-13 12:52:00,554 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:00,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:00,554 INFO L82 PathProgramCache]: Analyzing trace with hash -110572466, now seen corresponding path program 94 times [2021-08-13 12:52:00,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:00,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271100790] [2021-08-13 12:52:00,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:00,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:00,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:00,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:00,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:00,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:52:00,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:52:00,581 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:00,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:00,592 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:00,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:00,607 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:00,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:00,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:00,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271100790] [2021-08-13 12:52:00,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271100790] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:00,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:00,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:00,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626540865] [2021-08-13 12:52:00,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:00,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:00,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:00,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:00,622 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:00,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 367 transitions, 66252 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:00,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:00,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:00,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:01,221 INFO L129 PetriNetUnfolder]: 0/1198 cut-off events. [2021-08-13 12:52:01,221 INFO L130 PetriNetUnfolder]: For 281258/300523 co-relation queries the response was YES. [2021-08-13 12:52:01,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35279 conditions, 1198 events. 0/1198 cut-off events. For 281258/300523 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15634 event pairs, 0 based on Foata normal form. 1/1179 useless extension candidates. Maximal degree in co-relation 0. Up to 181 conditions per place. [2021-08-13 12:52:01,224 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 79 selfloop transitions, 20 changer transitions 252/366 dead transitions. [2021-08-13 12:52:01,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 366 transitions, 66766 flow [2021-08-13 12:52:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:01,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-08-13 12:52:01,225 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9077380952380952 [2021-08-13 12:52:01,225 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-08-13 12:52:01,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-08-13 12:52:01,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:01,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-08-13 12:52:01,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,226 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,226 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 572 predicate places. [2021-08-13 12:52:01,226 INFO L482 AbstractCegarLoop]: Abstraction has has 609 places, 366 transitions, 66766 flow [2021-08-13 12:52:01,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,226 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:01,226 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:01,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-08-13 12:52:01,227 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:01,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:01,227 INFO L82 PathProgramCache]: Analyzing trace with hash 105589568, now seen corresponding path program 95 times [2021-08-13 12:52:01,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:01,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296650235] [2021-08-13 12:52:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:01,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:01,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:01,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:01,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:01,245 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:52:01,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:52:01,251 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:52:01,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:52:01,260 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:01,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:01,273 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:01,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:01,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:01,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296650235] [2021-08-13 12:52:01,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296650235] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:01,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:01,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:01,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129445784] [2021-08-13 12:52:01,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:01,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:01,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:01,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:01,287 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:01,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 366 transitions, 66766 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:01,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:01,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:01,922 INFO L129 PetriNetUnfolder]: 0/1197 cut-off events. [2021-08-13 12:52:01,922 INFO L130 PetriNetUnfolder]: For 284497/304332 co-relation queries the response was YES. [2021-08-13 12:52:01,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35535 conditions, 1197 events. 0/1197 cut-off events. For 284497/304332 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15607 event pairs, 0 based on Foata normal form. 1/1178 useless extension candidates. Maximal degree in co-relation 0. Up to 180 conditions per place. [2021-08-13 12:52:01,925 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 76 selfloop transitions, 19 changer transitions 255/365 dead transitions. [2021-08-13 12:52:01,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 365 transitions, 67276 flow [2021-08-13 12:52:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:01,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-08-13 12:52:01,926 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9077380952380952 [2021-08-13 12:52:01,926 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-08-13 12:52:01,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-08-13 12:52:01,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:01,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-08-13 12:52:01,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,927 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,927 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 578 predicate places. [2021-08-13 12:52:01,927 INFO L482 AbstractCegarLoop]: Abstraction has has 615 places, 365 transitions, 67276 flow [2021-08-13 12:52:01,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,927 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:01,927 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:01,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-08-13 12:52:01,927 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:01,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:01,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1129024928, now seen corresponding path program 96 times [2021-08-13 12:52:01,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:01,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479273912] [2021-08-13 12:52:01,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:01,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:01,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:01,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:01,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:01,943 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:52:01,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:52:01,949 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:01,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:01,958 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:01,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:01,972 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:01,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:01,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:01,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479273912] [2021-08-13 12:52:01,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479273912] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:01,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:01,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:01,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695305202] [2021-08-13 12:52:01,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:01,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:01,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:01,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:01,986 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:01,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 365 transitions, 67276 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:01,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:01,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:01,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:02,670 INFO L129 PetriNetUnfolder]: 0/1196 cut-off events. [2021-08-13 12:52:02,671 INFO L130 PetriNetUnfolder]: For 253956/270738 co-relation queries the response was YES. [2021-08-13 12:52:02,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35789 conditions, 1196 events. 0/1196 cut-off events. For 253956/270738 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15530 event pairs, 0 based on Foata normal form. 1/1178 useless extension candidates. Maximal degree in co-relation 0. Up to 179 conditions per place. [2021-08-13 12:52:02,674 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 73 selfloop transitions, 19 changer transitions 257/364 dead transitions. [2021-08-13 12:52:02,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 364 transitions, 67782 flow [2021-08-13 12:52:02,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:02,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-08-13 12:52:02,674 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9077380952380952 [2021-08-13 12:52:02,674 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-08-13 12:52:02,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-08-13 12:52:02,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:02,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-08-13 12:52:02,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:02,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:02,675 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:02,675 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 584 predicate places. [2021-08-13 12:52:02,675 INFO L482 AbstractCegarLoop]: Abstraction has has 621 places, 364 transitions, 67782 flow [2021-08-13 12:52:02,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:02,675 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:02,676 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:02,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-08-13 12:52:02,676 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:02,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:02,676 INFO L82 PathProgramCache]: Analyzing trace with hash 881383642, now seen corresponding path program 97 times [2021-08-13 12:52:02,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:02,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588656760] [2021-08-13 12:52:02,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:02,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:02,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:02,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:02,688 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:52:02,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:52:02,694 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:02,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:02,703 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:02,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:02,716 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:02,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:02,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:02,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588656760] [2021-08-13 12:52:02,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588656760] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:02,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:02,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:02,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703819304] [2021-08-13 12:52:02,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:02,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:02,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:02,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:02,730 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:02,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 364 transitions, 67782 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:02,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:02,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:02,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:03,351 INFO L129 PetriNetUnfolder]: 0/1195 cut-off events. [2021-08-13 12:52:03,351 INFO L130 PetriNetUnfolder]: For 309616/344368 co-relation queries the response was YES. [2021-08-13 12:52:03,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36041 conditions, 1195 events. 0/1195 cut-off events. For 309616/344368 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15528 event pairs, 0 based on Foata normal form. 1/1176 useless extension candidates. Maximal degree in co-relation 0. Up to 178 conditions per place. [2021-08-13 12:52:03,354 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 71 selfloop transitions, 15 changer transitions 262/363 dead transitions. [2021-08-13 12:52:03,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 363 transitions, 68284 flow [2021-08-13 12:52:03,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2021-08-13 12:52:03,356 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 12:52:03,356 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 304 transitions. [2021-08-13 12:52:03,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 304 transitions. [2021-08-13 12:52:03,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:03,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 304 transitions. [2021-08-13 12:52:03,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:03,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:03,357 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:03,358 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 590 predicate places. [2021-08-13 12:52:03,358 INFO L482 AbstractCegarLoop]: Abstraction has has 627 places, 363 transitions, 68284 flow [2021-08-13 12:52:03,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:03,358 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:03,358 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:03,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-08-13 12:52:03,358 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:03,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:03,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1487693460, now seen corresponding path program 98 times [2021-08-13 12:52:03,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:03,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958680976] [2021-08-13 12:52:03,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:03,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:03,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:03,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:03,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:03,369 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:52:03,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:52:03,375 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:52:03,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:52:03,385 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:52:03,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:52:03,400 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:03,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:03,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:03,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958680976] [2021-08-13 12:52:03,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958680976] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:03,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:03,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:03,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57617194] [2021-08-13 12:52:03,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:03,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:03,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:03,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:03,413 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:03,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 363 transitions, 68284 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:03,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:03,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:03,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:04,212 INFO L129 PetriNetUnfolder]: 0/1194 cut-off events. [2021-08-13 12:52:04,213 INFO L130 PetriNetUnfolder]: For 313848/349698 co-relation queries the response was YES. [2021-08-13 12:52:04,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36291 conditions, 1194 events. 0/1194 cut-off events. For 313848/349698 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15546 event pairs, 0 based on Foata normal form. 1/1175 useless extension candidates. Maximal degree in co-relation 0. Up to 177 conditions per place. [2021-08-13 12:52:04,216 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 53 selfloop transitions, 30 changer transitions 264/362 dead transitions. [2021-08-13 12:52:04,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 362 transitions, 68782 flow [2021-08-13 12:52:04,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:04,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:04,217 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:04,217 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:04,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:04,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:04,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:04,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:04,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:04,220 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:04,220 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 596 predicate places. [2021-08-13 12:52:04,220 INFO L482 AbstractCegarLoop]: Abstraction has has 633 places, 362 transitions, 68782 flow [2021-08-13 12:52:04,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:04,220 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:04,220 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:04,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-08-13 12:52:04,220 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:04,220 INFO L82 PathProgramCache]: Analyzing trace with hash 763424956, now seen corresponding path program 99 times [2021-08-13 12:52:04,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:04,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316860415] [2021-08-13 12:52:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:04,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:04,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:04,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:04,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:04,238 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:52:04,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:52:04,245 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:52:04,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:52:04,255 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:04,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:04,269 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:04,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:04,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:04,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316860415] [2021-08-13 12:52:04,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316860415] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:04,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:04,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:04,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758986690] [2021-08-13 12:52:04,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:04,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:04,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:04,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:04,284 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:04,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 362 transitions, 68782 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:04,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:04,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:04,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:04,952 INFO L129 PetriNetUnfolder]: 0/1193 cut-off events. [2021-08-13 12:52:04,952 INFO L130 PetriNetUnfolder]: For 259956/278238 co-relation queries the response was YES. [2021-08-13 12:52:04,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36539 conditions, 1193 events. 0/1193 cut-off events. For 259956/278238 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15515 event pairs, 0 based on Foata normal form. 1/1175 useless extension candidates. Maximal degree in co-relation 0. Up to 176 conditions per place. [2021-08-13 12:52:04,955 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 51 selfloop transitions, 28 changer transitions 267/361 dead transitions. [2021-08-13 12:52:04,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 361 transitions, 69276 flow [2021-08-13 12:52:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:04,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:04,956 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:04,956 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:04,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:04,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:04,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:04,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:04,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:04,957 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:04,957 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 602 predicate places. [2021-08-13 12:52:04,957 INFO L482 AbstractCegarLoop]: Abstraction has has 639 places, 361 transitions, 69276 flow [2021-08-13 12:52:04,957 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:04,957 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:04,957 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:04,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-08-13 12:52:04,957 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:04,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:04,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1435909450, now seen corresponding path program 100 times [2021-08-13 12:52:04,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:04,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146888042] [2021-08-13 12:52:04,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:04,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:04,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:04,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:04,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:04,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:04,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:04,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:04,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:04,988 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:04,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:05,002 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:05,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:05,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:05,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146888042] [2021-08-13 12:52:05,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146888042] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:05,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:05,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:05,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75271512] [2021-08-13 12:52:05,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:05,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:05,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:05,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:05,032 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:05,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 361 transitions, 69276 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:05,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:05,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:05,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:05,738 INFO L129 PetriNetUnfolder]: 0/1192 cut-off events. [2021-08-13 12:52:05,738 INFO L130 PetriNetUnfolder]: For 299732/322417 co-relation queries the response was YES. [2021-08-13 12:52:05,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36785 conditions, 1192 events. 0/1192 cut-off events. For 299732/322417 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15566 event pairs, 0 based on Foata normal form. 1/1173 useless extension candidates. Maximal degree in co-relation 0. Up to 175 conditions per place. [2021-08-13 12:52:05,742 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 48 selfloop transitions, 28 changer transitions 269/360 dead transitions. [2021-08-13 12:52:05,742 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 360 transitions, 69766 flow [2021-08-13 12:52:05,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:05,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:05,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:05,743 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:05,743 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:05,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:05,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:05,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:05,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:05,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:05,744 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:05,744 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 608 predicate places. [2021-08-13 12:52:05,744 INFO L482 AbstractCegarLoop]: Abstraction has has 645 places, 360 transitions, 69766 flow [2021-08-13 12:52:05,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:05,744 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:05,744 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:05,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-08-13 12:52:05,745 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:05,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:05,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1872054514, now seen corresponding path program 101 times [2021-08-13 12:52:05,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:05,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131728428] [2021-08-13 12:52:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:05,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:05,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:05,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:05,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:05,755 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:52:05,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:52:05,762 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:05,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:05,771 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:05,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:05,785 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:05,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:05,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:05,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131728428] [2021-08-13 12:52:05,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131728428] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:05,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:05,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:05,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155925738] [2021-08-13 12:52:05,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:05,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:05,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:05,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:05,801 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:05,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 360 transitions, 69766 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:05,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:05,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:05,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:06,659 INFO L129 PetriNetUnfolder]: 0/1191 cut-off events. [2021-08-13 12:52:06,659 INFO L130 PetriNetUnfolder]: For 302566/325821 co-relation queries the response was YES. [2021-08-13 12:52:06,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37029 conditions, 1191 events. 0/1191 cut-off events. For 302566/325821 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15549 event pairs, 0 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 0. Up to 174 conditions per place. [2021-08-13 12:52:06,662 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 47 selfloop transitions, 26 changer transitions 271/359 dead transitions. [2021-08-13 12:52:06,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 359 transitions, 70252 flow [2021-08-13 12:52:06,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:06,663 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:06,663 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:06,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:06,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:06,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:06,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:06,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:06,664 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:06,664 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 614 predicate places. [2021-08-13 12:52:06,664 INFO L482 AbstractCegarLoop]: Abstraction has has 651 places, 359 transitions, 70252 flow [2021-08-13 12:52:06,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:06,664 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:06,664 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:06,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-08-13 12:52:06,664 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:06,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:06,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1491977186, now seen corresponding path program 102 times [2021-08-13 12:52:06,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:06,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648254111] [2021-08-13 12:52:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:06,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:06,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:06,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:06,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:06,679 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:52:06,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:52:06,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:06,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:06,695 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:52:06,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:52:06,708 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:06,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:06,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:06,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648254111] [2021-08-13 12:52:06,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648254111] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:06,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:06,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:06,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674752169] [2021-08-13 12:52:06,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:06,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:06,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:06,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:06,722 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:06,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 359 transitions, 70252 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:06,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:06,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:06,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:07,380 INFO L129 PetriNetUnfolder]: 0/1190 cut-off events. [2021-08-13 12:52:07,381 INFO L130 PetriNetUnfolder]: For 300080/325693 co-relation queries the response was YES. [2021-08-13 12:52:07,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37271 conditions, 1190 events. 0/1190 cut-off events. For 300080/325693 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15504 event pairs, 0 based on Foata normal form. 1/1171 useless extension candidates. Maximal degree in co-relation 0. Up to 173 conditions per place. [2021-08-13 12:52:07,384 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 44 selfloop transitions, 25 changer transitions 274/358 dead transitions. [2021-08-13 12:52:07,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 358 transitions, 70734 flow [2021-08-13 12:52:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:07,385 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:07,385 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:07,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:07,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:07,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:07,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:07,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:07,385 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:07,385 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 620 predicate places. [2021-08-13 12:52:07,385 INFO L482 AbstractCegarLoop]: Abstraction has has 657 places, 358 transitions, 70734 flow [2021-08-13 12:52:07,385 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:07,386 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:07,386 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:07,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-08-13 12:52:07,386 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:07,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:07,386 INFO L82 PathProgramCache]: Analyzing trace with hash -89067824, now seen corresponding path program 103 times [2021-08-13 12:52:07,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:07,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042632621] [2021-08-13 12:52:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:07,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:07,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:07,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:07,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:07,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:07,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:07,412 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:07,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:07,422 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:07,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:07,436 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:07,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:07,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:07,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042632621] [2021-08-13 12:52:07,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042632621] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:07,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:07,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:07,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747528637] [2021-08-13 12:52:07,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:07,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:07,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:07,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:07,450 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:07,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 358 transitions, 70734 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:07,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:07,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:07,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:08,148 INFO L129 PetriNetUnfolder]: 0/1189 cut-off events. [2021-08-13 12:52:08,148 INFO L130 PetriNetUnfolder]: For 302687/329066 co-relation queries the response was YES. [2021-08-13 12:52:08,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37511 conditions, 1189 events. 0/1189 cut-off events. For 302687/329066 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15499 event pairs, 0 based on Foata normal form. 1/1170 useless extension candidates. Maximal degree in co-relation 0. Up to 172 conditions per place. [2021-08-13 12:52:08,151 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 43 selfloop transitions, 22 changer transitions 277/357 dead transitions. [2021-08-13 12:52:08,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 357 transitions, 71212 flow [2021-08-13 12:52:08,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:08,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:08,152 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:08,152 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:08,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:08,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:08,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:08,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,152 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,152 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 626 predicate places. [2021-08-13 12:52:08,152 INFO L482 AbstractCegarLoop]: Abstraction has has 663 places, 357 transitions, 71212 flow [2021-08-13 12:52:08,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,153 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:08,153 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:08,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-08-13 12:52:08,153 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:08,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:08,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1882833790, now seen corresponding path program 104 times [2021-08-13 12:52:08,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:08,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430058570] [2021-08-13 12:52:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:08,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:08,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:08,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:08,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:08,167 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:52:08,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:52:08,174 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:08,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:08,183 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:08,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:08,196 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:08,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:08,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:08,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430058570] [2021-08-13 12:52:08,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430058570] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:08,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:08,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:08,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506734051] [2021-08-13 12:52:08,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:08,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:08,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:08,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:08,215 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:08,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 357 transitions, 71212 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:08,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:08,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:08,946 INFO L129 PetriNetUnfolder]: 0/1188 cut-off events. [2021-08-13 12:52:08,946 INFO L130 PetriNetUnfolder]: For 305224/332369 co-relation queries the response was YES. [2021-08-13 12:52:08,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37749 conditions, 1188 events. 0/1188 cut-off events. For 305224/332369 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15510 event pairs, 0 based on Foata normal form. 1/1169 useless extension candidates. Maximal degree in co-relation 0. Up to 171 conditions per place. [2021-08-13 12:52:08,950 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 39 selfloop transitions, 23 changer transitions 279/356 dead transitions. [2021-08-13 12:52:08,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 356 transitions, 71686 flow [2021-08-13 12:52:08,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:08,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:08,951 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:08,951 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:08,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:08,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:08,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:08,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,952 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,952 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 632 predicate places. [2021-08-13 12:52:08,952 INFO L482 AbstractCegarLoop]: Abstraction has has 669 places, 356 transitions, 71686 flow [2021-08-13 12:52:08,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:08,952 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:08,953 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:08,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-08-13 12:52:08,953 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:08,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:08,953 INFO L82 PathProgramCache]: Analyzing trace with hash 851864614, now seen corresponding path program 105 times [2021-08-13 12:52:08,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:08,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435265607] [2021-08-13 12:52:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:08,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:08,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:08,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:08,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:08,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:08,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:08,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:08,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:09,009 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:52:09,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:52:09,022 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:09,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:09,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:09,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435265607] [2021-08-13 12:52:09,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435265607] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:09,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:09,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:09,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725603626] [2021-08-13 12:52:09,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:09,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:09,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:09,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:09,036 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:09,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 669 places, 356 transitions, 71686 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:09,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:09,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:09,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:09,747 INFO L129 PetriNetUnfolder]: 0/1187 cut-off events. [2021-08-13 12:52:09,747 INFO L130 PetriNetUnfolder]: For 275380/299352 co-relation queries the response was YES. [2021-08-13 12:52:09,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37985 conditions, 1187 events. 0/1187 cut-off events. For 275380/299352 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15492 event pairs, 0 based on Foata normal form. 1/1169 useless extension candidates. Maximal degree in co-relation 0. Up to 170 conditions per place. [2021-08-13 12:52:09,751 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 37 selfloop transitions, 22 changer transitions 281/355 dead transitions. [2021-08-13 12:52:09,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 355 transitions, 72156 flow [2021-08-13 12:52:09,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:09,752 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:09,752 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:09,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:09,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:09,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:09,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:09,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:09,752 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:09,752 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 638 predicate places. [2021-08-13 12:52:09,752 INFO L482 AbstractCegarLoop]: Abstraction has has 675 places, 355 transitions, 72156 flow [2021-08-13 12:52:09,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:09,753 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:09,753 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:09,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-08-13 12:52:09,753 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:09,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:09,753 INFO L82 PathProgramCache]: Analyzing trace with hash -186256416, now seen corresponding path program 106 times [2021-08-13 12:52:09,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:09,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866993896] [2021-08-13 12:52:09,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:09,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:09,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:09,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:09,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:09,763 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 12:52:09,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 12:52:09,770 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:09,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:09,781 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:09,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:09,804 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:09,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:09,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:09,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866993896] [2021-08-13 12:52:09,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866993896] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:09,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:09,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:09,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72718275] [2021-08-13 12:52:09,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:09,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:09,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:09,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:09,819 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:09,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 355 transitions, 72156 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:09,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:09,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:09,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:10,504 INFO L129 PetriNetUnfolder]: 0/1186 cut-off events. [2021-08-13 12:52:10,504 INFO L130 PetriNetUnfolder]: For 276842/301514 co-relation queries the response was YES. [2021-08-13 12:52:10,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38219 conditions, 1186 events. 0/1186 cut-off events. For 276842/301514 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15510 event pairs, 0 based on Foata normal form. 1/1168 useless extension candidates. Maximal degree in co-relation 0. Up to 169 conditions per place. [2021-08-13 12:52:10,507 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 36 selfloop transitions, 18 changer transitions 285/354 dead transitions. [2021-08-13 12:52:10,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 354 transitions, 72622 flow [2021-08-13 12:52:10,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:10,508 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:10,508 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:10,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:10,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:10,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:10,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:10,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:10,509 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:10,509 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 644 predicate places. [2021-08-13 12:52:10,509 INFO L482 AbstractCegarLoop]: Abstraction has has 681 places, 354 transitions, 72622 flow [2021-08-13 12:52:10,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:10,509 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:10,509 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:10,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-08-13 12:52:10,510 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:10,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:10,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1272194256, now seen corresponding path program 107 times [2021-08-13 12:52:10,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:10,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681802684] [2021-08-13 12:52:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:10,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:10,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:10,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:10,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:10,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:10,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:10,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:10,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:10,551 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:10,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:10,567 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:10,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:10,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:10,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681802684] [2021-08-13 12:52:10,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681802684] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:10,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:10,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:10,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972349040] [2021-08-13 12:52:10,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:10,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:10,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:10,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:10,584 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:10,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 354 transitions, 72622 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:10,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:10,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:10,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:11,351 INFO L129 PetriNetUnfolder]: 0/1185 cut-off events. [2021-08-13 12:52:11,352 INFO L130 PetriNetUnfolder]: For 312385/341828 co-relation queries the response was YES. [2021-08-13 12:52:11,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38451 conditions, 1185 events. 0/1185 cut-off events. For 312385/341828 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15449 event pairs, 0 based on Foata normal form. 1/1166 useless extension candidates. Maximal degree in co-relation 0. Up to 168 conditions per place. [2021-08-13 12:52:11,355 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 32 selfloop transitions, 19 changer transitions 287/353 dead transitions. [2021-08-13 12:52:11,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 353 transitions, 73084 flow [2021-08-13 12:52:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:11,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:11,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:11,356 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:11,356 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:11,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:11,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:11,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:11,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:11,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:11,356 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:11,356 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 650 predicate places. [2021-08-13 12:52:11,357 INFO L482 AbstractCegarLoop]: Abstraction has has 687 places, 353 transitions, 73084 flow [2021-08-13 12:52:11,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:11,357 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:11,357 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:11,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-08-13 12:52:11,359 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:11,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:11,359 INFO L82 PathProgramCache]: Analyzing trace with hash -2023763794, now seen corresponding path program 108 times [2021-08-13 12:52:11,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:11,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886013209] [2021-08-13 12:52:11,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:11,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:11,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:11,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:11,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:11,376 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:52:11,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:52:11,393 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:52:11,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:52:11,407 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:11,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:11,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:11,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886013209] [2021-08-13 12:52:11,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886013209] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:11,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:11,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:11,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975929805] [2021-08-13 12:52:11,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:11,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:11,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:11,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:11,422 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:11,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 353 transitions, 73084 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:11,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:11,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:11,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:12,110 INFO L129 PetriNetUnfolder]: 0/1184 cut-off events. [2021-08-13 12:52:12,111 INFO L130 PetriNetUnfolder]: For 314612/344821 co-relation queries the response was YES. [2021-08-13 12:52:12,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38681 conditions, 1184 events. 0/1184 cut-off events. For 314612/344821 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15431 event pairs, 0 based on Foata normal form. 1/1165 useless extension candidates. Maximal degree in co-relation 0. Up to 167 conditions per place. [2021-08-13 12:52:12,114 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 30 selfloop transitions, 18 changer transitions 289/352 dead transitions. [2021-08-13 12:52:12,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 352 transitions, 73542 flow [2021-08-13 12:52:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:12,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:12,114 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:12,114 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:12,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:12,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:12,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:12,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:12,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:12,115 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:12,115 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 656 predicate places. [2021-08-13 12:52:12,115 INFO L482 AbstractCegarLoop]: Abstraction has has 693 places, 352 transitions, 73542 flow [2021-08-13 12:52:12,115 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:12,115 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:12,115 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:12,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-08-13 12:52:12,116 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:12,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:12,116 INFO L82 PathProgramCache]: Analyzing trace with hash -2030875056, now seen corresponding path program 109 times [2021-08-13 12:52:12,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:12,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371410308] [2021-08-13 12:52:12,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:12,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:12,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:12,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:12,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:12,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:12,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:12,132 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:12,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:12,141 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:52:12,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:52:12,153 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:12,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:12,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:12,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371410308] [2021-08-13 12:52:12,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371410308] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:12,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:12,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:12,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088128447] [2021-08-13 12:52:12,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:12,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:12,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:12,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:12,167 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:12,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 352 transitions, 73542 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:12,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:12,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:12,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:13,009 INFO L129 PetriNetUnfolder]: 0/1183 cut-off events. [2021-08-13 12:52:13,009 INFO L130 PetriNetUnfolder]: For 316754/347729 co-relation queries the response was YES. [2021-08-13 12:52:13,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38909 conditions, 1183 events. 0/1183 cut-off events. For 316754/347729 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15429 event pairs, 0 based on Foata normal form. 1/1164 useless extension candidates. Maximal degree in co-relation 0. Up to 166 conditions per place. [2021-08-13 12:52:13,013 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 26 selfloop transitions, 19 changer transitions 291/351 dead transitions. [2021-08-13 12:52:13,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 351 transitions, 73996 flow [2021-08-13 12:52:13,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:13,014 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:13,014 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:13,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:13,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:13,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:13,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:13,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:13,015 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:13,015 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 662 predicate places. [2021-08-13 12:52:13,015 INFO L482 AbstractCegarLoop]: Abstraction has has 699 places, 351 transitions, 73996 flow [2021-08-13 12:52:13,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:13,015 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:13,015 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:13,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-08-13 12:52:13,015 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:13,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:13,015 INFO L82 PathProgramCache]: Analyzing trace with hash 951203972, now seen corresponding path program 110 times [2021-08-13 12:52:13,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:13,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371791499] [2021-08-13 12:52:13,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:13,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:13,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:13,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:13,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:13,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:13,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:13,035 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:13,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:13,045 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:13,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:13,059 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:13,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:13,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:13,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371791499] [2021-08-13 12:52:13,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371791499] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:13,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:13,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:13,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810671700] [2021-08-13 12:52:13,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:13,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:13,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:13,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:13,074 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:13,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 351 transitions, 73996 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:13,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:13,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:13,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:13,801 INFO L129 PetriNetUnfolder]: 0/1182 cut-off events. [2021-08-13 12:52:13,801 INFO L130 PetriNetUnfolder]: For 324202/352587 co-relation queries the response was YES. [2021-08-13 12:52:13,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39135 conditions, 1182 events. 0/1182 cut-off events. For 324202/352587 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15451 event pairs, 0 based on Foata normal form. 1/1163 useless extension candidates. Maximal degree in co-relation 0. Up to 165 conditions per place. [2021-08-13 12:52:13,804 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 24 selfloop transitions, 17 changer transitions 294/350 dead transitions. [2021-08-13 12:52:13,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 350 transitions, 74446 flow [2021-08-13 12:52:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:13,805 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:13,805 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:13,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:13,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:13,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:13,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:13,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:13,806 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:13,806 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 668 predicate places. [2021-08-13 12:52:13,806 INFO L482 AbstractCegarLoop]: Abstraction has has 705 places, 350 transitions, 74446 flow [2021-08-13 12:52:13,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:13,806 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:13,806 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:13,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-08-13 12:52:13,807 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:13,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:13,807 INFO L82 PathProgramCache]: Analyzing trace with hash 64509308, now seen corresponding path program 111 times [2021-08-13 12:52:13,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:13,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110193158] [2021-08-13 12:52:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:13,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:13,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:13,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:13,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:13,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:13,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:13,823 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 12:52:13,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 12:52:13,832 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:13,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:13,844 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:13,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:13,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:13,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110193158] [2021-08-13 12:52:13,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110193158] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:13,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:13,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:13,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038636890] [2021-08-13 12:52:13,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:13,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:13,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:13,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:13,857 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:13,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 705 places, 350 transitions, 74446 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:13,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:13,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:13,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:14,584 INFO L129 PetriNetUnfolder]: 0/1181 cut-off events. [2021-08-13 12:52:14,584 INFO L130 PetriNetUnfolder]: For 326121/355076 co-relation queries the response was YES. [2021-08-13 12:52:14,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39359 conditions, 1181 events. 0/1181 cut-off events. For 326121/355076 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15443 event pairs, 0 based on Foata normal form. 1/1162 useless extension candidates. Maximal degree in co-relation 0. Up to 164 conditions per place. [2021-08-13 12:52:14,587 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 23 selfloop transitions, 14 changer transitions 297/349 dead transitions. [2021-08-13 12:52:14,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 711 places, 349 transitions, 74892 flow [2021-08-13 12:52:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:14,588 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:14,588 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:14,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:14,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:14,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:14,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:14,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:14,589 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:14,589 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 674 predicate places. [2021-08-13 12:52:14,589 INFO L482 AbstractCegarLoop]: Abstraction has has 711 places, 349 transitions, 74892 flow [2021-08-13 12:52:14,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:14,589 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:14,589 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:14,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-08-13 12:52:14,589 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:14,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:14,590 INFO L82 PathProgramCache]: Analyzing trace with hash -838078290, now seen corresponding path program 112 times [2021-08-13 12:52:14,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:14,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671720453] [2021-08-13 12:52:14,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:14,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:14,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:14,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:14,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:14,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:14,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:14,607 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:14,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:14,624 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:14,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:14,640 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:14,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:14,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:14,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671720453] [2021-08-13 12:52:14,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671720453] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:14,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:14,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:14,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820456998] [2021-08-13 12:52:14,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:14,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:14,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:14,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:14,666 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:14,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 349 transitions, 74892 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:14,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:14,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:14,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:15,511 INFO L129 PetriNetUnfolder]: 0/1180 cut-off events. [2021-08-13 12:52:15,511 INFO L130 PetriNetUnfolder]: For 275660/300442 co-relation queries the response was YES. [2021-08-13 12:52:15,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39581 conditions, 1180 events. 0/1180 cut-off events. For 275660/300442 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15431 event pairs, 0 based on Foata normal form. 1/1162 useless extension candidates. Maximal degree in co-relation 0. Up to 163 conditions per place. [2021-08-13 12:52:15,514 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 22 selfloop transitions, 11 changer transitions 300/348 dead transitions. [2021-08-13 12:52:15,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 348 transitions, 75334 flow [2021-08-13 12:52:15,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-08-13 12:52:15,515 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9077380952380952 [2021-08-13 12:52:15,515 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-08-13 12:52:15,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-08-13 12:52:15,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:15,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-08-13 12:52:15,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:15,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:15,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:15,516 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 680 predicate places. [2021-08-13 12:52:15,516 INFO L482 AbstractCegarLoop]: Abstraction has has 717 places, 348 transitions, 75334 flow [2021-08-13 12:52:15,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:15,516 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:15,516 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:15,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-08-13 12:52:15,516 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:15,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:15,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1283995662, now seen corresponding path program 113 times [2021-08-13 12:52:15,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:15,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416983311] [2021-08-13 12:52:15,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:15,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:15,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:15,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:15,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:15,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:15,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:15,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:15,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:15,555 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:15,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:15,571 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:15,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:15,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:15,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416983311] [2021-08-13 12:52:15,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416983311] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:15,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:15,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:15,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776591583] [2021-08-13 12:52:15,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:15,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:15,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:15,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:15,589 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:15,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 348 transitions, 75334 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:15,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:15,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:15,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:16,342 INFO L129 PetriNetUnfolder]: 0/1179 cut-off events. [2021-08-13 12:52:16,342 INFO L130 PetriNetUnfolder]: For 316164/345913 co-relation queries the response was YES. [2021-08-13 12:52:16,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39801 conditions, 1179 events. 0/1179 cut-off events. For 316164/345913 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15394 event pairs, 0 based on Foata normal form. 1/1160 useless extension candidates. Maximal degree in co-relation 0. Up to 162 conditions per place. [2021-08-13 12:52:16,345 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 20 selfloop transitions, 8 changer transitions 304/347 dead transitions. [2021-08-13 12:52:16,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 723 places, 347 transitions, 75772 flow [2021-08-13 12:52:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:16,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-08-13 12:52:16,346 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9077380952380952 [2021-08-13 12:52:16,346 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-08-13 12:52:16,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-08-13 12:52:16,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:16,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-08-13 12:52:16,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:16,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:16,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:16,347 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 686 predicate places. [2021-08-13 12:52:16,347 INFO L482 AbstractCegarLoop]: Abstraction has has 723 places, 347 transitions, 75772 flow [2021-08-13 12:52:16,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:16,347 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:16,347 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:16,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-08-13 12:52:16,348 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:16,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:16,348 INFO L82 PathProgramCache]: Analyzing trace with hash -419501384, now seen corresponding path program 114 times [2021-08-13 12:52:16,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:16,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614653645] [2021-08-13 12:52:16,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:16,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:16,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:16,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:16,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:16,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:16,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:16,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:16,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:16,374 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:16,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:16,387 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:16,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:16,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:16,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614653645] [2021-08-13 12:52:16,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614653645] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:16,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:16,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:16,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702086388] [2021-08-13 12:52:16,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:16,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:16,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:16,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:16,402 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:16,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 723 places, 347 transitions, 75772 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:16,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:16,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:16,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:17,217 INFO L129 PetriNetUnfolder]: 0/1178 cut-off events. [2021-08-13 12:52:17,218 INFO L130 PetriNetUnfolder]: For 317467/347782 co-relation queries the response was YES. [2021-08-13 12:52:17,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40019 conditions, 1178 events. 0/1178 cut-off events. For 317467/347782 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15394 event pairs, 0 based on Foata normal form. 1/1159 useless extension candidates. Maximal degree in co-relation 0. Up to 161 conditions per place. [2021-08-13 12:52:17,221 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 15 selfloop transitions, 10 changer transitions 306/346 dead transitions. [2021-08-13 12:52:17,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 346 transitions, 76206 flow [2021-08-13 12:52:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:17,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:17,221 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:17,221 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:17,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:17,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:17,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:17,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:17,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:17,222 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:17,222 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 692 predicate places. [2021-08-13 12:52:17,222 INFO L482 AbstractCegarLoop]: Abstraction has has 729 places, 346 transitions, 76206 flow [2021-08-13 12:52:17,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:17,222 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:17,222 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:17,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-08-13 12:52:17,222 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:17,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:17,223 INFO L82 PathProgramCache]: Analyzing trace with hash 188174982, now seen corresponding path program 115 times [2021-08-13 12:52:17,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:17,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920399779] [2021-08-13 12:52:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:17,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:17,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:17,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:17,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:17,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:17,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:17,248 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:17,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:17,257 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:17,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:17,273 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:17,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:17,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:17,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920399779] [2021-08-13 12:52:17,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920399779] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:17,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:17,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:17,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079923194] [2021-08-13 12:52:17,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:17,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:17,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:17,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:17,287 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:17,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 346 transitions, 76206 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:17,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:17,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:17,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:18,128 INFO L129 PetriNetUnfolder]: 0/1177 cut-off events. [2021-08-13 12:52:18,128 INFO L130 PetriNetUnfolder]: For 276452/302734 co-relation queries the response was YES. [2021-08-13 12:52:18,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40235 conditions, 1177 events. 0/1177 cut-off events. For 276452/302734 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15406 event pairs, 0 based on Foata normal form. 1/1159 useless extension candidates. Maximal degree in co-relation 0. Up to 160 conditions per place. [2021-08-13 12:52:18,131 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 12 selfloop transitions, 10 changer transitions 308/345 dead transitions. [2021-08-13 12:52:18,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 345 transitions, 76636 flow [2021-08-13 12:52:18,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:18,132 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:18,132 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:18,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:18,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:18,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:18,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:18,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:18,132 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:18,133 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 698 predicate places. [2021-08-13 12:52:18,133 INFO L482 AbstractCegarLoop]: Abstraction has has 735 places, 345 transitions, 76636 flow [2021-08-13 12:52:18,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:18,133 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:18,133 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:18,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-08-13 12:52:18,133 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:18,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2004445922, now seen corresponding path program 116 times [2021-08-13 12:52:18,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:18,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687170662] [2021-08-13 12:52:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:18,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:18,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:18,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:18,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:18,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:18,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:18,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:18,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 12:52:18,159 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:18,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:18,172 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:18,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:18,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:18,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687170662] [2021-08-13 12:52:18,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687170662] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:18,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:18,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:18,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289804108] [2021-08-13 12:52:18,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:18,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:18,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:18,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:18,185 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:18,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 735 places, 345 transitions, 76636 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:18,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:18,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:18,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:19,039 INFO L129 PetriNetUnfolder]: 0/1176 cut-off events. [2021-08-13 12:52:19,040 INFO L130 PetriNetUnfolder]: For 334036/365841 co-relation queries the response was YES. [2021-08-13 12:52:19,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40449 conditions, 1176 events. 0/1176 cut-off events. For 334036/365841 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15384 event pairs, 0 based on Foata normal form. 1/1157 useless extension candidates. Maximal degree in co-relation 0. Up to 159 conditions per place. [2021-08-13 12:52:19,043 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 12 selfloop transitions, 6 changer transitions 311/344 dead transitions. [2021-08-13 12:52:19,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 344 transitions, 77062 flow [2021-08-13 12:52:19,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-08-13 12:52:19,043 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9077380952380952 [2021-08-13 12:52:19,044 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-08-13 12:52:19,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-08-13 12:52:19,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:19,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-08-13 12:52:19,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:19,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:19,044 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:19,044 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 704 predicate places. [2021-08-13 12:52:19,044 INFO L482 AbstractCegarLoop]: Abstraction has has 741 places, 344 transitions, 77062 flow [2021-08-13 12:52:19,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:19,044 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:19,045 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:19,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-08-13 12:52:19,045 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:19,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:19,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1483333798, now seen corresponding path program 117 times [2021-08-13 12:52:19,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:19,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049282434] [2021-08-13 12:52:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:19,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:19,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:19,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:19,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:19,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:19,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:19,064 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:19,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:19,074 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:19,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:19,087 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:19,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:19,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:19,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049282434] [2021-08-13 12:52:19,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049282434] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:19,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:19,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:19,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561799677] [2021-08-13 12:52:19,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:19,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:19,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:19,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:19,101 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:19,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 741 places, 344 transitions, 77062 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:19,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:19,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:19,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:20,031 INFO L129 PetriNetUnfolder]: 0/1175 cut-off events. [2021-08-13 12:52:20,031 INFO L130 PetriNetUnfolder]: For 335262/367637 co-relation queries the response was YES. [2021-08-13 12:52:20,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40661 conditions, 1175 events. 0/1175 cut-off events. For 335262/367637 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15401 event pairs, 0 based on Foata normal form. 1/1156 useless extension candidates. Maximal degree in co-relation 0. Up to 158 conditions per place. [2021-08-13 12:52:20,034 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 7 selfloop transitions, 7 changer transitions 314/343 dead transitions. [2021-08-13 12:52:20,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 747 places, 343 transitions, 77484 flow [2021-08-13 12:52:20,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 12:52:20,035 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 12:52:20,035 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 12:52:20,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 12:52:20,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:20,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 12:52:20,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:20,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:20,036 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:20,036 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 710 predicate places. [2021-08-13 12:52:20,036 INFO L482 AbstractCegarLoop]: Abstraction has has 747 places, 343 transitions, 77484 flow [2021-08-13 12:52:20,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:20,036 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:20,036 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:20,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-08-13 12:52:20,036 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:20,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:20,037 INFO L82 PathProgramCache]: Analyzing trace with hash 532744562, now seen corresponding path program 118 times [2021-08-13 12:52:20,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:20,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622545227] [2021-08-13 12:52:20,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:20,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:20,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:20,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:20,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:20,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:20,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:20,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 12:52:20,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 12:52:20,063 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:20,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:20,076 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:20,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:20,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:20,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622545227] [2021-08-13 12:52:20,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622545227] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:20,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:20,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:20,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009532876] [2021-08-13 12:52:20,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:20,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:20,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:20,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:20,090 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:20,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 747 places, 343 transitions, 77484 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:20,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:20,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:20,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:20,930 INFO L129 PetriNetUnfolder]: 0/1174 cut-off events. [2021-08-13 12:52:20,930 INFO L130 PetriNetUnfolder]: For 331712/369581 co-relation queries the response was YES. [2021-08-13 12:52:20,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40871 conditions, 1174 events. 0/1174 cut-off events. For 331712/369581 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15363 event pairs, 0 based on Foata normal form. 1/1155 useless extension candidates. Maximal degree in co-relation 0. Up to 157 conditions per place. [2021-08-13 12:52:20,933 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 6 selfloop transitions, 3 changer transitions 318/342 dead transitions. [2021-08-13 12:52:20,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 342 transitions, 77902 flow [2021-08-13 12:52:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:20,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2021-08-13 12:52:20,934 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 12:52:20,934 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 304 transitions. [2021-08-13 12:52:20,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 304 transitions. [2021-08-13 12:52:20,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:20,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 304 transitions. [2021-08-13 12:52:20,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:20,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:20,934 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:20,934 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 716 predicate places. [2021-08-13 12:52:20,934 INFO L482 AbstractCegarLoop]: Abstraction has has 753 places, 342 transitions, 77902 flow [2021-08-13 12:52:20,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:20,935 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:20,935 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:20,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-08-13 12:52:20,935 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:20,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:20,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1698629498, now seen corresponding path program 119 times [2021-08-13 12:52:20,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:20,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821142935] [2021-08-13 12:52:20,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:20,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:20,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:20,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:20,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:20,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:20,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:20,951 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:20,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:20,968 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 12:52:20,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 12:52:20,981 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:20,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:20,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:20,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821142935] [2021-08-13 12:52:20,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821142935] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:20,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:20,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:20,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673230635] [2021-08-13 12:52:20,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:20,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:20,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:20,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:20,995 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:20,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 342 transitions, 77902 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:20,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:20,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:20,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:22,149 INFO L129 PetriNetUnfolder]: 0/1173 cut-off events. [2021-08-13 12:52:22,150 INFO L130 PetriNetUnfolder]: For 286293/320065 co-relation queries the response was YES. [2021-08-13 12:52:22,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41079 conditions, 1173 events. 0/1173 cut-off events. For 286293/320065 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15373 event pairs, 0 based on Foata normal form. 1/1155 useless extension candidates. Maximal degree in co-relation 0. Up to 156 conditions per place. [2021-08-13 12:52:22,153 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 2 selfloop transitions, 4 changer transitions 320/341 dead transitions. [2021-08-13 12:52:22,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 341 transitions, 78316 flow [2021-08-13 12:52:22,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:22,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2021-08-13 12:52:22,153 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 12:52:22,153 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 304 transitions. [2021-08-13 12:52:22,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 304 transitions. [2021-08-13 12:52:22,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:22,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 304 transitions. [2021-08-13 12:52:22,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:22,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:22,154 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:22,154 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 722 predicate places. [2021-08-13 12:52:22,154 INFO L482 AbstractCegarLoop]: Abstraction has has 759 places, 341 transitions, 78316 flow [2021-08-13 12:52:22,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:22,154 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:52:22,154 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:52:22,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-08-13 12:52:22,155 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 12:52:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:52:22,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1754188542, now seen corresponding path program 120 times [2021-08-13 12:52:22,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:52:22,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709819006] [2021-08-13 12:52:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:52:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:52:22,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:22,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:52:22,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:22,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 12:52:22,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:52:22,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 12:52:22,170 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 12:52:22,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 12:52:22,185 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 12:52:22,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 12:52:22,198 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 12:52:22,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 12:52:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:52:22,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:52:22,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709819006] [2021-08-13 12:52:22,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709819006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:52:22,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:52:22,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 12:52:22,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423825381] [2021-08-13 12:52:22,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 12:52:22,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:52:22,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 12:52:22,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 12:52:22,211 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 12:52:22,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 759 places, 341 transitions, 78316 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:22,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:52:22,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 12:52:22,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:52:23,452 INFO L129 PetriNetUnfolder]: 0/1172 cut-off events. [2021-08-13 12:52:23,452 INFO L130 PetriNetUnfolder]: For 333848/373249 co-relation queries the response was YES. [2021-08-13 12:52:23,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41285 conditions, 1172 events. 0/1172 cut-off events. For 333848/373249 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15383 event pairs, 0 based on Foata normal form. 1/1153 useless extension candidates. Maximal degree in co-relation 0. Up to 155 conditions per place. [2021-08-13 12:52:23,456 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 0 selfloop transitions, 0 changer transitions 340/340 dead transitions. [2021-08-13 12:52:23,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 764 places, 340 transitions, 78726 flow [2021-08-13 12:52:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:52:23,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:52:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 303 transitions. [2021-08-13 12:52:23,456 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9017857142857143 [2021-08-13 12:52:23,456 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 303 transitions. [2021-08-13 12:52:23,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 303 transitions. [2021-08-13 12:52:23,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:52:23,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 303 transitions. [2021-08-13 12:52:23,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.285714285714285) internal successors, (303), 7 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:23,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:23,457 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:23,457 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 727 predicate places. [2021-08-13 12:52:23,457 INFO L482 AbstractCegarLoop]: Abstraction has has 764 places, 340 transitions, 78726 flow [2021-08-13 12:52:23,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 12:52:23,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown