/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 13:38:00,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 13:38:00,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 13:38:00,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-26 13:38:00,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 13:38:00,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 13:38:00,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 13:38:00,693 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 13:38:00,719 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 13:38:00,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 13:38:00,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 13:38:00,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 13:38:00,722 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 13:38:00,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 13:38:00,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 13:38:00,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 13:38:00,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 13:38:00,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 13:38:00,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 13:38:00,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 13:38:00,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 13:38:00,724 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 13:38:00,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 13:38:00,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 13:38:00,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 13:38:00,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 13:38:00,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 13:38:00,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 13:38:00,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 13:38:00,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:38:00,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 13:38:00,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 13:38:00,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 13:38:00,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 13:38:00,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 13:38:00,725 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 13:38:00,725 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 13:38:00,725 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 13:38:00,725 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 13:38:00,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 13:38:00,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 13:38:00,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 13:38:00,985 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 13:38:00,986 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 13:38:00,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl [2021-03-26 13:38:00,987 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl' [2021-03-26 13:38:01,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 13:38:01,018 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 13:38:01,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 13:38:01,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 13:38:01,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 13:38:01,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:38:01" (1/1) ... [2021-03-26 13:38:01,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:38:01" (1/1) ... [2021-03-26 13:38:01,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 13:38:01,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 13:38:01,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 13:38:01,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 13:38:01,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:38:01" (1/1) ... [2021-03-26 13:38:01,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:38:01" (1/1) ... [2021-03-26 13:38:01,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:38:01" (1/1) ... [2021-03-26 13:38:01,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:38:01" (1/1) ... [2021-03-26 13:38:01,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:38:01" (1/1) ... [2021-03-26 13:38:01,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:38:01" (1/1) ... [2021-03-26 13:38:01,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:38:01" (1/1) ... [2021-03-26 13:38:01,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 13:38:01,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 13:38:01,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 13:38:01,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 13:38:01,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:38:01" (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 [2021-03-26 13:38:01,127 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-26 13:38:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-26 13:38:01,127 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-26 13:38:01,133 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-26 13:38:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-26 13:38:01,133 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-26 13:38:01,133 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-26 13:38:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-26 13:38:01,133 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-26 13:38:01,133 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-26 13:38:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-26 13:38:01,134 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-26 13:38:01,134 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-26 13:38:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-26 13:38:01,134 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-26 13:38:01,134 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 13:38:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 13:38:01,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 13:38:01,136 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-26 13:38:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-26 13:38:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-26 13:38:01,137 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-26 13:38:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-26 13:38:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-26 13:38:01,138 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-26 13:38:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-26 13:38:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-26 13:38:01,140 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 13:38:01,245 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 13:38:01,245 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 13:38:01,246 INFO L202 PluginConnector]: Adding new model example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:38:01 BoogieIcfgContainer [2021-03-26 13:38:01,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 13:38:01,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 13:38:01,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 13:38:01,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 13:38:01,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:38:01" (1/2) ... [2021-03-26 13:38:01,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78599934 and model type example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 01:38:01, skipping insertion in model container [2021-03-26 13:38:01,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:38:01" (2/2) ... [2021-03-26 13:38:01,251 INFO L111 eAbstractionObserver]: Analyzing ICFG example_8.bpl [2021-03-26 13:38:01,255 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 13:38:01,257 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 13:38:01,257 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 13:38:01,351 INFO L149 ThreadInstanceAdder]: Constructed 64 joinOtherThreadTransitions. [2021-03-26 13:38:01,363 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-03-26 13:38:01,377 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 13:38:01,377 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 13:38:01,378 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 13:38:01,378 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 13:38:01,378 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 13:38:01,378 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 13:38:01,378 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 13:38:01,378 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 13:38:01,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 99 transitions, 430 flow [2021-03-26 13:38:01,546 INFO L129 PetriNetUnfolder]: 769/1051 cut-off events. [2021-03-26 13:38:01,546 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2021-03-26 13:38:01,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 1051 events. 769/1051 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3895 event pairs, 0 based on Foata normal form. 0/1050 useless extension candidates. Maximal degree in co-relation 933. Up to 280 conditions per place. [2021-03-26 13:38:01,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 99 transitions, 430 flow [2021-03-26 13:38:01,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 89 transitions, 394 flow [2021-03-26 13:38:01,579 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:01,593 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 89 transitions, 394 flow [2021-03-26 13:38:01,599 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 89 transitions, 394 flow [2021-03-26 13:38:01,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 89 transitions, 394 flow [2021-03-26 13:38:01,683 INFO L129 PetriNetUnfolder]: 769/1049 cut-off events. [2021-03-26 13:38:01,683 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2021-03-26 13:38:01,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 1049 events. 769/1049 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3656 event pairs, 0 based on Foata normal form. 0/1049 useless extension candidates. Maximal degree in co-relation 933. Up to 280 conditions per place. [2021-03-26 13:38:01,698 INFO L142 LiptonReduction]: Number of co-enabled transitions 1904 [2021-03-26 13:38:01,827 INFO L154 LiptonReduction]: Checked pairs total: 532 [2021-03-26 13:38:01,828 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-26 13:38:01,830 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 252 [2021-03-26 13:38:01,896 INFO L129 PetriNetUnfolder]: 769/1040 cut-off events. [2021-03-26 13:38:01,896 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2021-03-26 13:38:01,896 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:01,897 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:01,897 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:01,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:01,903 INFO L82 PathProgramCache]: Analyzing trace with hash 799209287, now seen corresponding path program 1 times [2021-03-26 13:38:01,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:01,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655666204] [2021-03-26 13:38:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:01,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:01,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:01,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:01,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:38:02,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:02,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655666204] [2021-03-26 13:38:02,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:02,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:38:02,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842704267] [2021-03-26 13:38:02,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:38:02,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:02,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:38:02,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:38:02,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-03-26 13:38:02,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 81 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:02,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-03-26 13:38:02,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:02,087 INFO L129 PetriNetUnfolder]: 475/683 cut-off events. [2021-03-26 13:38:02,088 INFO L130 PetriNetUnfolder]: For 987/987 co-relation queries the response was YES. [2021-03-26 13:38:02,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 683 events. 475/683 cut-off events. For 987/987 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2782 event pairs, 0 based on Foata normal form. 64/747 useless extension candidates. Maximal degree in co-relation 913. Up to 168 conditions per place. [2021-03-26 13:38:02,093 INFO L132 encePairwiseOnDemand]: 102/107 looper letters, 4 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2021-03-26 13:38:02,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 368 flow [2021-03-26 13:38:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:38:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:38:02,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-03-26 13:38:02,102 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2021-03-26 13:38:02,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:02,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 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) [2021-03-26 13:38:02,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,114 INFO L185 Difference]: Start difference. First operand has 50 places, 81 transitions, 378 flow. Second operand 3 states and 303 transitions. [2021-03-26 13:38:02,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 368 flow [2021-03-26 13:38:02,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 77 transitions, 232 flow, removed 0 selfloop flow, removed 16 redundant places. [2021-03-26 13:38:02,122 INFO L241 Difference]: Finished difference. Result has 36 places, 77 transitions, 224 flow [2021-03-26 13:38:02,124 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=36, PETRI_TRANSITIONS=77} [2021-03-26 13:38:02,124 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -14 predicate places. [2021-03-26 13:38:02,124 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:02,125 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 77 transitions, 224 flow [2021-03-26 13:38:02,125 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 77 transitions, 224 flow [2021-03-26 13:38:02,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 77 transitions, 224 flow [2021-03-26 13:38:02,156 INFO L129 PetriNetUnfolder]: 475/683 cut-off events. [2021-03-26 13:38:02,156 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:38:02,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 683 events. 475/683 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2536 event pairs, 0 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 681. Up to 168 conditions per place. [2021-03-26 13:38:02,162 INFO L142 LiptonReduction]: Number of co-enabled transitions 840 [2021-03-26 13:38:02,172 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:02,173 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:02,173 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 49 [2021-03-26 13:38:02,174 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 77 transitions, 224 flow [2021-03-26 13:38:02,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,174 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:02,174 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:02,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 13:38:02,175 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:02,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:02,175 INFO L82 PathProgramCache]: Analyzing trace with hash 140970533, now seen corresponding path program 1 times [2021-03-26 13:38:02,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:02,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819907623] [2021-03-26 13:38:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:02,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:02,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:38:02,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:02,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819907623] [2021-03-26 13:38:02,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:02,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:38:02,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060500689] [2021-03-26 13:38:02,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:38:02,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:02,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:38:02,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:38:02,224 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-03-26 13:38:02,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 77 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:02,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-03-26 13:38:02,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:02,253 INFO L129 PetriNetUnfolder]: 214/345 cut-off events. [2021-03-26 13:38:02,253 INFO L130 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2021-03-26 13:38:02,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 345 events. 214/345 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1285 event pairs, 0 based on Foata normal form. 57/402 useless extension candidates. Maximal degree in co-relation 373. Up to 63 conditions per place. [2021-03-26 13:38:02,255 INFO L132 encePairwiseOnDemand]: 101/107 looper letters, 3 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2021-03-26 13:38:02,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 72 transitions, 217 flow [2021-03-26 13:38:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:38:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:38:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-03-26 13:38:02,259 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2021-03-26 13:38:02,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:02,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 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) [2021-03-26 13:38:02,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,264 INFO L185 Difference]: Start difference. First operand has 36 places, 77 transitions, 224 flow. Second operand 3 states and 303 transitions. [2021-03-26 13:38:02,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 72 transitions, 217 flow [2021-03-26 13:38:02,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 72 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:38:02,268 INFO L241 Difference]: Finished difference. Result has 37 places, 72 transitions, 210 flow [2021-03-26 13:38:02,268 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=37, PETRI_TRANSITIONS=72} [2021-03-26 13:38:02,268 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -13 predicate places. [2021-03-26 13:38:02,268 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:02,269 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 72 transitions, 210 flow [2021-03-26 13:38:02,269 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 72 transitions, 210 flow [2021-03-26 13:38:02,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 72 transitions, 210 flow [2021-03-26 13:38:02,288 INFO L129 PetriNetUnfolder]: 214/345 cut-off events. [2021-03-26 13:38:02,288 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:38:02,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 345 events. 214/345 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1210 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 344. Up to 63 conditions per place. [2021-03-26 13:38:02,292 INFO L142 LiptonReduction]: Number of co-enabled transitions 770 [2021-03-26 13:38:02,300 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:02,300 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:02,301 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-03-26 13:38:02,303 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 72 transitions, 210 flow [2021-03-26 13:38:02,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,303 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:02,303 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:02,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 13:38:02,303 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:02,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:02,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1458043723, now seen corresponding path program 1 times [2021-03-26 13:38:02,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:02,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606251566] [2021-03-26 13:38:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:02,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:02,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:38:02,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:02,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606251566] [2021-03-26 13:38:02,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:02,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:38:02,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909584095] [2021-03-26 13:38:02,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:38:02,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:02,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:38:02,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:38:02,347 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-03-26 13:38:02,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 72 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:02,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-03-26 13:38:02,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:02,377 INFO L129 PetriNetUnfolder]: 209/339 cut-off events. [2021-03-26 13:38:02,377 INFO L130 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2021-03-26 13:38:02,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 339 events. 209/339 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1280 event pairs, 0 based on Foata normal form. 1/340 useless extension candidates. Maximal degree in co-relation 382. Up to 63 conditions per place. [2021-03-26 13:38:02,379 INFO L132 encePairwiseOnDemand]: 105/107 looper letters, 7 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2021-03-26 13:38:02,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 71 transitions, 223 flow [2021-03-26 13:38:02,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:38:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:38:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-03-26 13:38:02,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2021-03-26 13:38:02,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:02,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 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) [2021-03-26 13:38:02,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,382 INFO L185 Difference]: Start difference. First operand has 37 places, 72 transitions, 210 flow. Second operand 3 states and 303 transitions. [2021-03-26 13:38:02,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 71 transitions, 223 flow [2021-03-26 13:38:02,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 71 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:38:02,384 INFO L241 Difference]: Finished difference. Result has 38 places, 71 transitions, 208 flow [2021-03-26 13:38:02,385 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=38, PETRI_TRANSITIONS=71} [2021-03-26 13:38:02,385 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -12 predicate places. [2021-03-26 13:38:02,385 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:02,385 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 71 transitions, 208 flow [2021-03-26 13:38:02,386 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 71 transitions, 208 flow [2021-03-26 13:38:02,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 71 transitions, 208 flow [2021-03-26 13:38:02,401 INFO L129 PetriNetUnfolder]: 209/339 cut-off events. [2021-03-26 13:38:02,402 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:38:02,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 339 events. 209/339 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1176 event pairs, 0 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 345. Up to 63 conditions per place. [2021-03-26 13:38:02,404 INFO L142 LiptonReduction]: Number of co-enabled transitions 756 [2021-03-26 13:38:02,410 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:02,410 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:02,410 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-26 13:38:02,411 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 71 transitions, 208 flow [2021-03-26 13:38:02,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,411 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:02,412 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:02,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 13:38:02,412 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:02,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:02,412 INFO L82 PathProgramCache]: Analyzing trace with hash 779424171, now seen corresponding path program 1 times [2021-03-26 13:38:02,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:02,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911452294] [2021-03-26 13:38:02,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:02,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:02,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:38:02,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:02,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911452294] [2021-03-26 13:38:02,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:02,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:38:02,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415584586] [2021-03-26 13:38:02,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:38:02,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:02,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:38:02,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:38:02,462 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-03-26 13:38:02,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 71 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:02,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-03-26 13:38:02,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:02,516 INFO L129 PetriNetUnfolder]: 185/309 cut-off events. [2021-03-26 13:38:02,516 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2021-03-26 13:38:02,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 309 events. 185/309 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1139 event pairs, 0 based on Foata normal form. 5/314 useless extension candidates. Maximal degree in co-relation 355. Up to 63 conditions per place. [2021-03-26 13:38:02,518 INFO L132 encePairwiseOnDemand]: 104/107 looper letters, 6 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2021-03-26 13:38:02,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 69 transitions, 216 flow [2021-03-26 13:38:02,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:38:02,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:38:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-03-26 13:38:02,519 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2021-03-26 13:38:02,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:02,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 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) [2021-03-26 13:38:02,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,521 INFO L185 Difference]: Start difference. First operand has 38 places, 71 transitions, 208 flow. Second operand 3 states and 303 transitions. [2021-03-26 13:38:02,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 69 transitions, 216 flow [2021-03-26 13:38:02,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 69 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:38:02,522 INFO L241 Difference]: Finished difference. Result has 39 places, 69 transitions, 203 flow [2021-03-26 13:38:02,522 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=39, PETRI_TRANSITIONS=69} [2021-03-26 13:38:02,522 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2021-03-26 13:38:02,522 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:02,522 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 69 transitions, 203 flow [2021-03-26 13:38:02,523 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 69 transitions, 203 flow [2021-03-26 13:38:02,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 69 transitions, 203 flow [2021-03-26 13:38:02,550 INFO L129 PetriNetUnfolder]: 185/309 cut-off events. [2021-03-26 13:38:02,550 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:38:02,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 309 events. 185/309 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1066 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 316. Up to 63 conditions per place. [2021-03-26 13:38:02,552 INFO L142 LiptonReduction]: Number of co-enabled transitions 728 [2021-03-26 13:38:02,557 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:02,557 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:02,557 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35 [2021-03-26 13:38:02,557 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 69 transitions, 203 flow [2021-03-26 13:38:02,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,558 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:02,558 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:02,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 13:38:02,558 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:02,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:02,558 INFO L82 PathProgramCache]: Analyzing trace with hash 394116671, now seen corresponding path program 1 times [2021-03-26 13:38:02,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:02,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025655905] [2021-03-26 13:38:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:02,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:02,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:38:02,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:02,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025655905] [2021-03-26 13:38:02,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:02,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:38:02,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878393625] [2021-03-26 13:38:02,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:38:02,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:02,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:38:02,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:38:02,591 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-03-26 13:38:02,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 69 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:02,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-03-26 13:38:02,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:02,608 INFO L129 PetriNetUnfolder]: 48/111 cut-off events. [2021-03-26 13:38:02,609 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2021-03-26 13:38:02,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 111 events. 48/111 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 316 event pairs, 0 based on Foata normal form. 31/142 useless extension candidates. Maximal degree in co-relation 127. Up to 20 conditions per place. [2021-03-26 13:38:02,609 INFO L132 encePairwiseOnDemand]: 100/107 looper letters, 2 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2021-03-26 13:38:02,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 63 transitions, 191 flow [2021-03-26 13:38:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:38:02,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:38:02,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-03-26 13:38:02,611 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2021-03-26 13:38:02,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:02,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 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) [2021-03-26 13:38:02,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,613 INFO L185 Difference]: Start difference. First operand has 39 places, 69 transitions, 203 flow. Second operand 3 states and 303 transitions. [2021-03-26 13:38:02,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 63 transitions, 191 flow [2021-03-26 13:38:02,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 63 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:38:02,614 INFO L241 Difference]: Finished difference. Result has 40 places, 63 transitions, 186 flow [2021-03-26 13:38:02,614 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=40, PETRI_TRANSITIONS=63} [2021-03-26 13:38:02,614 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -10 predicate places. [2021-03-26 13:38:02,614 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:02,614 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 63 transitions, 186 flow [2021-03-26 13:38:02,615 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 63 transitions, 186 flow [2021-03-26 13:38:02,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 63 transitions, 186 flow [2021-03-26 13:38:02,621 INFO L129 PetriNetUnfolder]: 48/111 cut-off events. [2021-03-26 13:38:02,621 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:38:02,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 111 events. 48/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 284 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 119. Up to 20 conditions per place. [2021-03-26 13:38:02,622 INFO L142 LiptonReduction]: Number of co-enabled transitions 460 [2021-03-26 13:38:02,626 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:02,626 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:02,626 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-26 13:38:02,627 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 63 transitions, 186 flow [2021-03-26 13:38:02,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,628 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:02,628 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:02,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 13:38:02,628 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:02,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:02,628 INFO L82 PathProgramCache]: Analyzing trace with hash -2118826737, now seen corresponding path program 1 times [2021-03-26 13:38:02,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:02,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193281122] [2021-03-26 13:38:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:02,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:02,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:38:02,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:02,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193281122] [2021-03-26 13:38:02,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:02,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:38:02,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772882831] [2021-03-26 13:38:02,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:38:02,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:02,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:38:02,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:38:02,662 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-03-26 13:38:02,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 63 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:02,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-03-26 13:38:02,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:02,670 INFO L129 PetriNetUnfolder]: 6/37 cut-off events. [2021-03-26 13:38:02,670 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-03-26 13:38:02,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 37 events. 6/37 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 13/50 useless extension candidates. Maximal degree in co-relation 47. Up to 6 conditions per place. [2021-03-26 13:38:02,671 INFO L132 encePairwiseOnDemand]: 99/107 looper letters, 1 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2021-03-26 13:38:02,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 103 flow [2021-03-26 13:38:02,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:38:02,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:38:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-03-26 13:38:02,672 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2021-03-26 13:38:02,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:02,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-03-26 13:38:02,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 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) [2021-03-26 13:38:02,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,673 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,673 INFO L185 Difference]: Start difference. First operand has 40 places, 63 transitions, 186 flow. Second operand 3 states and 303 transitions. [2021-03-26 13:38:02,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 103 flow [2021-03-26 13:38:02,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:38:02,675 INFO L241 Difference]: Finished difference. Result has 41 places, 34 transitions, 100 flow [2021-03-26 13:38:02,675 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2021-03-26 13:38:02,675 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2021-03-26 13:38:02,676 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:02,676 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 34 transitions, 100 flow [2021-03-26 13:38:02,676 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 34 transitions, 100 flow [2021-03-26 13:38:02,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 34 transitions, 100 flow [2021-03-26 13:38:02,679 INFO L129 PetriNetUnfolder]: 6/37 cut-off events. [2021-03-26 13:38:02,679 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:38:02,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 37 events. 6/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 46. Up to 6 conditions per place. [2021-03-26 13:38:02,679 INFO L142 LiptonReduction]: Number of co-enabled transitions 266 [2021-03-26 13:38:02,681 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:02,681 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:02,681 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-26 13:38:02,683 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 100 flow [2021-03-26 13:38:02,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:02,684 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:02,684 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:02,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 13:38:02,684 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:02,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:02,684 INFO L82 PathProgramCache]: Analyzing trace with hash 485427359, now seen corresponding path program 1 times [2021-03-26 13:38:02,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:02,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708915186] [2021-03-26 13:38:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:02,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:02,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:38:02,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:02,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:38:02,795 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 13:38:02,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:38:02,832 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-26 13:38:02,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:38:02,872 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-26 13:38:02,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-26 13:38:02,934 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:38:02,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:38:02,978 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:38:02,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:38:03,046 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:38:03,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:38:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:03,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708915186] [2021-03-26 13:38:03,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:03,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:38:03,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719725607] [2021-03-26 13:38:03,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:38:03,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:03,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:38:03,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:38:03,081 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:38:03,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 100 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:03,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:03,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:38:03,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:03,273 INFO L129 PetriNetUnfolder]: 1122/1869 cut-off events. [2021-03-26 13:38:03,273 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:38:03,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3238 conditions, 1869 events. 1122/1869 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10591 event pairs, 321 based on Foata normal form. 1/1762 useless extension candidates. Maximal degree in co-relation 3230. Up to 513 conditions per place. [2021-03-26 13:38:03,284 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 35 selfloop transitions, 8 changer transitions 0/68 dead transitions. [2021-03-26 13:38:03,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 68 transitions, 254 flow [2021-03-26 13:38:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:38:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:38:03,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:38:03,286 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:38:03,286 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:38:03,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:38:03,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:03,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:38:03,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:03,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:03,289 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:03,290 INFO L185 Difference]: Start difference. First operand has 41 places, 34 transitions, 100 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:38:03,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 68 transitions, 254 flow [2021-03-26 13:38:03,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 68 transitions, 253 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:38:03,293 INFO L241 Difference]: Finished difference. Result has 57 places, 41 transitions, 160 flow [2021-03-26 13:38:03,293 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2021-03-26 13:38:03,294 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2021-03-26 13:38:03,294 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:03,294 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 41 transitions, 160 flow [2021-03-26 13:38:03,294 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 41 transitions, 160 flow [2021-03-26 13:38:03,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 41 transitions, 160 flow [2021-03-26 13:38:03,305 INFO L129 PetriNetUnfolder]: 33/148 cut-off events. [2021-03-26 13:38:03,305 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-03-26 13:38:03,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 148 events. 33/148 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 688 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 199. Up to 32 conditions per place. [2021-03-26 13:38:03,306 INFO L142 LiptonReduction]: Number of co-enabled transitions 416 [2021-03-26 13:38:03,308 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:03,308 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:03,308 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-26 13:38:03,309 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 160 flow [2021-03-26 13:38:03,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:03,309 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:03,309 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:03,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 13:38:03,310 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:03,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:03,310 INFO L82 PathProgramCache]: Analyzing trace with hash -800180707, now seen corresponding path program 2 times [2021-03-26 13:38:03,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:03,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379891247] [2021-03-26 13:38:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:03,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:03,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:03,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:03,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:38:03,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:03,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:38:03,377 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:38:03,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:38:03,389 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:38:03,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:38:03,404 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:38:03,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:38:03,423 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:38:03,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:38:03,451 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:38:03,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:38:03,484 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:38:03,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:38:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:03,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379891247] [2021-03-26 13:38:03,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:03,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:38:03,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188684171] [2021-03-26 13:38:03,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:38:03,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:03,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:38:03,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:38:03,514 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:38:03,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 160 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:03,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:03,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:38:03,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:03,816 INFO L129 PetriNetUnfolder]: 1644/3210 cut-off events. [2021-03-26 13:38:03,816 INFO L130 PetriNetUnfolder]: For 2365/2433 co-relation queries the response was YES. [2021-03-26 13:38:03,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6953 conditions, 3210 events. 1644/3210 cut-off events. For 2365/2433 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 24697 event pairs, 387 based on Foata normal form. 1/3076 useless extension candidates. Maximal degree in co-relation 6937. Up to 683 conditions per place. [2021-03-26 13:38:03,837 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 53 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2021-03-26 13:38:03,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 91 transitions, 531 flow [2021-03-26 13:38:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:38:03,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:38:03,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:38:03,840 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:38:03,840 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:38:03,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:38:03,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:03,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:38:03,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:03,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:03,843 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:03,843 INFO L185 Difference]: Start difference. First operand has 57 places, 41 transitions, 160 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:38:03,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 91 transitions, 531 flow [2021-03-26 13:38:03,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 523 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:38:03,847 INFO L241 Difference]: Finished difference. Result has 73 places, 52 transitions, 285 flow [2021-03-26 13:38:03,847 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=285, PETRI_PLACES=73, PETRI_TRANSITIONS=52} [2021-03-26 13:38:03,847 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2021-03-26 13:38:03,847 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:03,847 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 52 transitions, 285 flow [2021-03-26 13:38:03,847 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 52 transitions, 285 flow [2021-03-26 13:38:03,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 52 transitions, 285 flow [2021-03-26 13:38:03,872 INFO L129 PetriNetUnfolder]: 112/461 cut-off events. [2021-03-26 13:38:03,872 INFO L130 PetriNetUnfolder]: For 174/183 co-relation queries the response was YES. [2021-03-26 13:38:03,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 461 events. 112/461 cut-off events. For 174/183 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3422 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 675. Up to 106 conditions per place. [2021-03-26 13:38:03,876 INFO L142 LiptonReduction]: Number of co-enabled transitions 638 [2021-03-26 13:38:03,880 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:03,880 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:03,880 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-03-26 13:38:03,880 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 52 transitions, 285 flow [2021-03-26 13:38:03,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:03,881 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:03,881 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:03,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 13:38:03,881 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:03,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:03,881 INFO L82 PathProgramCache]: Analyzing trace with hash 577942889, now seen corresponding path program 3 times [2021-03-26 13:38:03,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:03,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353642520] [2021-03-26 13:38:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:03,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:03,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:03,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:03,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:38:03,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:03,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:38:03,917 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:38:03,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:38:03,929 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:38:03,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:38:03,946 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:38:03,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:38:03,969 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-26 13:38:03,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:38:04,000 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:38:04,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:38:04,030 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:38:04,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:38:04,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:04,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353642520] [2021-03-26 13:38:04,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:04,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:38:04,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121365181] [2021-03-26 13:38:04,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:38:04,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:04,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:38:04,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:38:04,061 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:38:04,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 52 transitions, 285 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:04,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:04,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:38:04,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:04,453 INFO L129 PetriNetUnfolder]: 2188/4661 cut-off events. [2021-03-26 13:38:04,453 INFO L130 PetriNetUnfolder]: For 8638/8771 co-relation queries the response was YES. [2021-03-26 13:38:04,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12216 conditions, 4661 events. 2188/4661 cut-off events. For 8638/8771 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 41739 event pairs, 451 based on Foata normal form. 1/4461 useless extension candidates. Maximal degree in co-relation 12192. Up to 948 conditions per place. [2021-03-26 13:38:04,495 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 68 selfloop transitions, 23 changer transitions 0/116 dead transitions. [2021-03-26 13:38:04,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 116 transitions, 928 flow [2021-03-26 13:38:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:38:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:38:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:38:04,509 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:38:04,509 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:38:04,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:38:04,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:04,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:38:04,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:04,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:04,513 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:04,513 INFO L185 Difference]: Start difference. First operand has 73 places, 52 transitions, 285 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:38:04,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 116 transitions, 928 flow [2021-03-26 13:38:04,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 116 transitions, 911 flow, removed 4 selfloop flow, removed 1 redundant places. [2021-03-26 13:38:04,529 INFO L241 Difference]: Finished difference. Result has 89 places, 72 transitions, 562 flow [2021-03-26 13:38:04,529 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=562, PETRI_PLACES=89, PETRI_TRANSITIONS=72} [2021-03-26 13:38:04,529 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2021-03-26 13:38:04,529 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:04,529 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 72 transitions, 562 flow [2021-03-26 13:38:04,529 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 72 transitions, 562 flow [2021-03-26 13:38:04,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 72 transitions, 562 flow [2021-03-26 13:38:04,591 INFO L129 PetriNetUnfolder]: 264/1028 cut-off events. [2021-03-26 13:38:04,591 INFO L130 PetriNetUnfolder]: For 832/910 co-relation queries the response was YES. [2021-03-26 13:38:04,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 1028 events. 264/1028 cut-off events. For 832/910 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9407 event pairs, 0 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 1643. Up to 248 conditions per place. [2021-03-26 13:38:04,601 INFO L142 LiptonReduction]: Number of co-enabled transitions 1016 [2021-03-26 13:38:04,607 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:04,607 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:04,607 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 78 [2021-03-26 13:38:04,608 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 72 transitions, 562 flow [2021-03-26 13:38:04,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:04,608 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:04,608 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:04,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 13:38:04,608 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:04,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:04,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1696932537, now seen corresponding path program 4 times [2021-03-26 13:38:04,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:04,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606258011] [2021-03-26 13:38:04,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:04,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:04,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:04,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:04,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:38:04,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:04,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:38:04,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:04,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:38:04,647 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 13:38:04,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:38:04,660 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 13:38:04,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:38:04,678 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:38:04,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:38:04,702 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:38:04,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:38:04,729 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:38:04,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:38:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:04,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606258011] [2021-03-26 13:38:04,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:04,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:38:04,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567323388] [2021-03-26 13:38:04,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:38:04,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:04,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:38:04,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:38:04,756 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:38:04,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 72 transitions, 562 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:04,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:04,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:38:04,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:05,246 INFO L129 PetriNetUnfolder]: 2435/5318 cut-off events. [2021-03-26 13:38:05,246 INFO L130 PetriNetUnfolder]: For 17874/18398 co-relation queries the response was YES. [2021-03-26 13:38:05,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16488 conditions, 5318 events. 2435/5318 cut-off events. For 17874/18398 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 48719 event pairs, 533 based on Foata normal form. 1/5113 useless extension candidates. Maximal degree in co-relation 16456. Up to 1130 conditions per place. [2021-03-26 13:38:05,307 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 86 selfloop transitions, 29 changer transitions 0/140 dead transitions. [2021-03-26 13:38:05,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 140 transitions, 1420 flow [2021-03-26 13:38:05,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:38:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:38:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:38:05,309 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:38:05,309 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:38:05,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:38:05,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:05,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:38:05,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:05,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:05,312 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:05,312 INFO L185 Difference]: Start difference. First operand has 89 places, 72 transitions, 562 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:38:05,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 140 transitions, 1420 flow [2021-03-26 13:38:05,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 140 transitions, 1397 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-03-26 13:38:05,340 INFO L241 Difference]: Finished difference. Result has 105 places, 91 transitions, 879 flow [2021-03-26 13:38:05,341 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=879, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2021-03-26 13:38:05,341 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 55 predicate places. [2021-03-26 13:38:05,341 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:05,341 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 91 transitions, 879 flow [2021-03-26 13:38:05,343 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 91 transitions, 879 flow [2021-03-26 13:38:05,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 91 transitions, 879 flow [2021-03-26 13:38:05,420 INFO L129 PetriNetUnfolder]: 368/1412 cut-off events. [2021-03-26 13:38:05,421 INFO L130 PetriNetUnfolder]: For 1898/2053 co-relation queries the response was YES. [2021-03-26 13:38:05,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2527 conditions, 1412 events. 368/1412 cut-off events. For 1898/2053 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13964 event pairs, 0 based on Foata normal form. 0/1250 useless extension candidates. Maximal degree in co-relation 2488. Up to 350 conditions per place. [2021-03-26 13:38:05,435 INFO L142 LiptonReduction]: Number of co-enabled transitions 1324 [2021-03-26 13:38:05,444 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:05,444 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:05,444 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 103 [2021-03-26 13:38:05,444 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 879 flow [2021-03-26 13:38:05,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:05,445 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:05,445 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:05,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 13:38:05,445 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:05,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:05,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1265189545, now seen corresponding path program 5 times [2021-03-26 13:38:05,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:05,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760334014] [2021-03-26 13:38:05,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:05,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:05,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:05,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:05,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:38:05,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:05,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:38:05,512 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:38:05,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:38:05,522 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-26 13:38:05,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:38:05,536 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:38:05,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:38:05,554 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-26 13:38:05,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:38:05,577 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:38:05,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:38:05,607 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:38:05,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:38:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:05,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760334014] [2021-03-26 13:38:05,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:05,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:38:05,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814814673] [2021-03-26 13:38:05,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:38:05,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:05,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:38:05,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:38:05,633 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:38:05,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 879 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:05,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:05,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:38:05,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:06,515 INFO L129 PetriNetUnfolder]: 4217/10029 cut-off events. [2021-03-26 13:38:06,515 INFO L130 PetriNetUnfolder]: For 40017/40880 co-relation queries the response was YES. [2021-03-26 13:38:06,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28916 conditions, 10029 events. 4217/10029 cut-off events. For 40017/40880 co-relation queries the response was YES. Maximal size of possible extension queue 1381. Compared 111689 event pairs, 611 based on Foata normal form. 2/9501 useless extension candidates. Maximal degree in co-relation 28876. Up to 2199 conditions per place. [2021-03-26 13:38:06,831 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 100 selfloop transitions, 49 changer transitions 0/174 dead transitions. [2021-03-26 13:38:06,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 174 transitions, 2145 flow [2021-03-26 13:38:06,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:38:06,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:38:06,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:38:06,833 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:38:06,833 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:38:06,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:38:06,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:06,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:38:06,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:06,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:06,836 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:06,836 INFO L185 Difference]: Start difference. First operand has 105 places, 91 transitions, 879 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:38:06,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 174 transitions, 2145 flow [2021-03-26 13:38:06,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 174 transitions, 2053 flow, removed 37 selfloop flow, removed 1 redundant places. [2021-03-26 13:38:06,890 INFO L241 Difference]: Finished difference. Result has 121 places, 124 transitions, 1471 flow [2021-03-26 13:38:06,890 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1471, PETRI_PLACES=121, PETRI_TRANSITIONS=124} [2021-03-26 13:38:06,890 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 71 predicate places. [2021-03-26 13:38:06,890 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:06,890 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 124 transitions, 1471 flow [2021-03-26 13:38:06,891 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 124 transitions, 1471 flow [2021-03-26 13:38:06,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 124 transitions, 1471 flow [2021-03-26 13:38:07,114 INFO L129 PetriNetUnfolder]: 590/2444 cut-off events. [2021-03-26 13:38:07,114 INFO L130 PetriNetUnfolder]: For 5604/5905 co-relation queries the response was YES. [2021-03-26 13:38:07,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4977 conditions, 2444 events. 590/2444 cut-off events. For 5604/5905 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 27626 event pairs, 0 based on Foata normal form. 11/2202 useless extension candidates. Maximal degree in co-relation 4930. Up to 584 conditions per place. [2021-03-26 13:38:07,140 INFO L142 LiptonReduction]: Number of co-enabled transitions 1890 [2021-03-26 13:38:07,150 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:07,150 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:07,151 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 261 [2021-03-26 13:38:07,151 INFO L480 AbstractCegarLoop]: Abstraction has has 121 places, 124 transitions, 1471 flow [2021-03-26 13:38:07,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:07,151 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:07,152 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:07,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 13:38:07,152 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:07,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:07,152 INFO L82 PathProgramCache]: Analyzing trace with hash 69446857, now seen corresponding path program 1 times [2021-03-26 13:38:07,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:07,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057522380] [2021-03-26 13:38:07,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:07,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:07,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:07,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:07,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:38:07,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:07,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:07,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057522380] [2021-03-26 13:38:07,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:07,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:38:07,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494129910] [2021-03-26 13:38:07,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:38:07,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:07,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:38:07,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:38:07,176 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-03-26 13:38:07,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 124 transitions, 1471 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:07,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:07,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-03-26 13:38:07,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:07,349 INFO L129 PetriNetUnfolder]: 0/1353 cut-off events. [2021-03-26 13:38:07,350 INFO L130 PetriNetUnfolder]: For 5869/6128 co-relation queries the response was YES. [2021-03-26 13:38:07,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3994 conditions, 1353 events. 0/1353 cut-off events. For 5869/6128 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 17377 event pairs, 0 based on Foata normal form. 214/1404 useless extension candidates. Maximal degree in co-relation 0. Up to 146 conditions per place. [2021-03-26 13:38:07,351 INFO L132 encePairwiseOnDemand]: 103/107 looper letters, 1 selfloop transitions, 1 changer transitions 5/115 dead transitions. [2021-03-26 13:38:07,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 115 transitions, 1448 flow [2021-03-26 13:38:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:38:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:38:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2021-03-26 13:38:07,353 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9314641744548287 [2021-03-26 13:38:07,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2021-03-26 13:38:07,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2021-03-26 13:38:07,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:07,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2021-03-26 13:38:07,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:07,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:07,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:07,354 INFO L185 Difference]: Start difference. First operand has 121 places, 124 transitions, 1471 flow. Second operand 3 states and 299 transitions. [2021-03-26 13:38:07,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 115 transitions, 1448 flow [2021-03-26 13:38:07,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 115 transitions, 1410 flow, removed 13 selfloop flow, removed 1 redundant places. [2021-03-26 13:38:07,383 INFO L241 Difference]: Finished difference. Result has 122 places, 110 transitions, 1360 flow [2021-03-26 13:38:07,383 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1360, PETRI_PLACES=122, PETRI_TRANSITIONS=110} [2021-03-26 13:38:07,383 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 72 predicate places. [2021-03-26 13:38:07,383 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:07,383 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 110 transitions, 1360 flow [2021-03-26 13:38:07,384 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 110 transitions, 1360 flow [2021-03-26 13:38:07,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 110 transitions, 1360 flow [2021-03-26 13:38:07,502 INFO L129 PetriNetUnfolder]: 0/1339 cut-off events. [2021-03-26 13:38:07,502 INFO L130 PetriNetUnfolder]: For 5071/5355 co-relation queries the response was YES. [2021-03-26 13:38:07,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 1339 events. 0/1339 cut-off events. For 5071/5355 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 17289 event pairs, 0 based on Foata normal form. 11/1210 useless extension candidates. Maximal degree in co-relation 0. Up to 143 conditions per place. [2021-03-26 13:38:07,513 INFO L142 LiptonReduction]: Number of co-enabled transitions 910 [2021-03-26 13:38:07,517 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:07,518 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:07,518 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 135 [2021-03-26 13:38:07,518 INFO L480 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 1360 flow [2021-03-26 13:38:07,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:07,518 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:07,518 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:07,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-26 13:38:07,519 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:07,519 INFO L82 PathProgramCache]: Analyzing trace with hash 49113155, now seen corresponding path program 6 times [2021-03-26 13:38:07,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:07,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249520350] [2021-03-26 13:38:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:07,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:07,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:07,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:07,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:38:07,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:07,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:38:07,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:07,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:38:07,557 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-26 13:38:07,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:38:07,579 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-03-26 13:38:07,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:38:07,632 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-26 13:38:07,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 13:38:07,681 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:38:07,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:38:07,717 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:38:07,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:38:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:07,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249520350] [2021-03-26 13:38:07,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:07,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:38:07,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728462178] [2021-03-26 13:38:07,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:38:07,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:07,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:38:07,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:38:07,749 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:38:07,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 1360 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:07,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:07,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:38:07,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:08,711 INFO L129 PetriNetUnfolder]: 2482/7195 cut-off events. [2021-03-26 13:38:08,712 INFO L130 PetriNetUnfolder]: For 72601/74367 co-relation queries the response was YES. [2021-03-26 13:38:08,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37059 conditions, 7195 events. 2482/7195 cut-off events. For 72601/74367 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 81593 event pairs, 1050 based on Foata normal form. 2/7015 useless extension candidates. Maximal degree in co-relation 37011. Up to 2531 conditions per place. [2021-03-26 13:38:08,852 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 144 selfloop transitions, 44 changer transitions 1/205 dead transitions. [2021-03-26 13:38:08,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 205 transitions, 2986 flow [2021-03-26 13:38:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:38:08,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:38:08,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:38:08,856 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:38:08,856 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:38:08,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:38:08,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:08,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:38:08,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:08,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:08,859 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:08,860 INFO L185 Difference]: Start difference. First operand has 117 places, 110 transitions, 1360 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:38:08,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 205 transitions, 2986 flow [2021-03-26 13:38:09,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 205 transitions, 2915 flow, removed 35 selfloop flow, removed 6 redundant places. [2021-03-26 13:38:09,015 INFO L241 Difference]: Finished difference. Result has 128 places, 125 transitions, 1725 flow [2021-03-26 13:38:09,016 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1725, PETRI_PLACES=128, PETRI_TRANSITIONS=125} [2021-03-26 13:38:09,016 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 78 predicate places. [2021-03-26 13:38:09,016 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:09,016 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 125 transitions, 1725 flow [2021-03-26 13:38:09,016 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 125 transitions, 1725 flow [2021-03-26 13:38:09,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 125 transitions, 1725 flow [2021-03-26 13:38:09,235 INFO L129 PetriNetUnfolder]: 0/2243 cut-off events. [2021-03-26 13:38:09,235 INFO L130 PetriNetUnfolder]: For 9957/10336 co-relation queries the response was YES. [2021-03-26 13:38:09,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6114 conditions, 2243 events. 0/2243 cut-off events. For 9957/10336 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 32096 event pairs, 0 based on Foata normal form. 17/2042 useless extension candidates. Maximal degree in co-relation 0. Up to 230 conditions per place. [2021-03-26 13:38:09,256 INFO L142 LiptonReduction]: Number of co-enabled transitions 1044 [2021-03-26 13:38:09,261 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:09,261 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:09,261 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 245 [2021-03-26 13:38:09,261 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 1725 flow [2021-03-26 13:38:09,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:09,262 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:09,262 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:09,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-26 13:38:09,262 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:09,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:09,262 INFO L82 PathProgramCache]: Analyzing trace with hash -79794005, now seen corresponding path program 7 times [2021-03-26 13:38:09,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:09,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117533074] [2021-03-26 13:38:09,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:09,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:09,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:09,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:09,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:38:09,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:09,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:38:09,304 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 13:38:09,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:38:09,322 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:38:09,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:38:09,349 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-26 13:38:09,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:38:09,370 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-26 13:38:09,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:38:09,432 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:38:09,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:38:09,459 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:38:09,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:38:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:09,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117533074] [2021-03-26 13:38:09,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:09,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:38:09,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783922754] [2021-03-26 13:38:09,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:38:09,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:09,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:38:09,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:38:09,484 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:38:09,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 125 transitions, 1725 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:09,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:09,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:38:09,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:11,030 INFO L129 PetriNetUnfolder]: 3009/11033 cut-off events. [2021-03-26 13:38:11,030 INFO L130 PetriNetUnfolder]: For 127965/133062 co-relation queries the response was YES. [2021-03-26 13:38:11,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55289 conditions, 11033 events. 3009/11033 cut-off events. For 127965/133062 co-relation queries the response was YES. Maximal size of possible extension queue 1280. Compared 150182 event pairs, 883 based on Foata normal form. 7/10726 useless extension candidates. Maximal degree in co-relation 55238. Up to 2689 conditions per place. [2021-03-26 13:38:11,125 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 141 selfloop transitions, 85 changer transitions 1/243 dead transitions. [2021-03-26 13:38:11,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 243 transitions, 3995 flow [2021-03-26 13:38:11,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:38:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:38:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:38:11,128 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:38:11,128 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:38:11,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:38:11,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:11,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:38:11,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:11,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:11,131 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:11,131 INFO L185 Difference]: Start difference. First operand has 127 places, 125 transitions, 1725 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:38:11,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 243 transitions, 3995 flow [2021-03-26 13:38:11,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 243 transitions, 3823 flow, removed 54 selfloop flow, removed 2 redundant places. [2021-03-26 13:38:11,460 INFO L241 Difference]: Finished difference. Result has 142 places, 169 transitions, 2755 flow [2021-03-26 13:38:11,460 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2755, PETRI_PLACES=142, PETRI_TRANSITIONS=169} [2021-03-26 13:38:11,461 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 92 predicate places. [2021-03-26 13:38:11,461 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:11,461 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 169 transitions, 2755 flow [2021-03-26 13:38:11,461 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 169 transitions, 2755 flow [2021-03-26 13:38:11,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 169 transitions, 2755 flow [2021-03-26 13:38:11,973 INFO L129 PetriNetUnfolder]: 0/4023 cut-off events. [2021-03-26 13:38:11,973 INFO L130 PetriNetUnfolder]: For 26142/27177 co-relation queries the response was YES. [2021-03-26 13:38:11,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12147 conditions, 4023 events. 0/4023 cut-off events. For 26142/27177 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 64711 event pairs, 0 based on Foata normal form. 38/3760 useless extension candidates. Maximal degree in co-relation 0. Up to 393 conditions per place. [2021-03-26 13:38:12,001 INFO L142 LiptonReduction]: Number of co-enabled transitions 1274 [2021-03-26 13:38:12,008 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:12,008 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:12,008 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 547 [2021-03-26 13:38:12,009 INFO L480 AbstractCegarLoop]: Abstraction has has 141 places, 169 transitions, 2755 flow [2021-03-26 13:38:12,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:12,009 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:12,009 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:12,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-26 13:38:12,009 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:12,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:12,009 INFO L82 PathProgramCache]: Analyzing trace with hash 394404565, now seen corresponding path program 8 times [2021-03-26 13:38:12,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:12,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952604351] [2021-03-26 13:38:12,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:12,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:12,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:12,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:12,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:38:12,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:12,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:38:12,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:12,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:38:12,044 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:38:12,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:38:12,057 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:38:12,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:38:12,075 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:38:12,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:38:12,116 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:38:12,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:38:12,146 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:38:12,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:38:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:12,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952604351] [2021-03-26 13:38:12,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:12,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:38:12,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874878061] [2021-03-26 13:38:12,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:38:12,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:12,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:38:12,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:38:12,174 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:38:12,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 169 transitions, 2755 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:12,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:12,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:38:12,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:14,675 INFO L129 PetriNetUnfolder]: 3609/15146 cut-off events. [2021-03-26 13:38:14,675 INFO L130 PetriNetUnfolder]: For 215198/219577 co-relation queries the response was YES. [2021-03-26 13:38:14,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78992 conditions, 15146 events. 3609/15146 cut-off events. For 215198/219577 co-relation queries the response was YES. Maximal size of possible extension queue 1869. Compared 228830 event pairs, 1180 based on Foata normal form. 1/14680 useless extension candidates. Maximal degree in co-relation 78934. Up to 3921 conditions per place. [2021-03-26 13:38:14,858 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 217 selfloop transitions, 96 changer transitions 2/331 dead transitions. [2021-03-26 13:38:14,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 331 transitions, 6187 flow [2021-03-26 13:38:14,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:38:14,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:38:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:38:14,868 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:38:14,868 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:38:14,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:38:14,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:14,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:38:14,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:14,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:14,874 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:14,874 INFO L185 Difference]: Start difference. First operand has 141 places, 169 transitions, 2755 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:38:14,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 331 transitions, 6187 flow [2021-03-26 13:38:15,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 331 transitions, 6077 flow, removed 42 selfloop flow, removed 2 redundant places. [2021-03-26 13:38:15,656 INFO L241 Difference]: Finished difference. Result has 156 places, 211 transitions, 3900 flow [2021-03-26 13:38:15,656 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2693, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3900, PETRI_PLACES=156, PETRI_TRANSITIONS=211} [2021-03-26 13:38:15,656 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 106 predicate places. [2021-03-26 13:38:15,657 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:15,657 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 211 transitions, 3900 flow [2021-03-26 13:38:15,657 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 211 transitions, 3900 flow [2021-03-26 13:38:15,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 155 places, 211 transitions, 3900 flow [2021-03-26 13:38:16,607 INFO L129 PetriNetUnfolder]: 0/6076 cut-off events. [2021-03-26 13:38:16,607 INFO L130 PetriNetUnfolder]: For 53300/54874 co-relation queries the response was YES. [2021-03-26 13:38:16,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20226 conditions, 6076 events. 0/6076 cut-off events. For 53300/54874 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 104701 event pairs, 0 based on Foata normal form. 22/5681 useless extension candidates. Maximal degree in co-relation 0. Up to 590 conditions per place. [2021-03-26 13:38:16,665 INFO L142 LiptonReduction]: Number of co-enabled transitions 1476 [2021-03-26 13:38:16,687 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:16,687 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:16,688 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1031 [2021-03-26 13:38:16,705 INFO L480 AbstractCegarLoop]: Abstraction has has 155 places, 211 transitions, 3900 flow [2021-03-26 13:38:16,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:16,706 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:16,706 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:16,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-26 13:38:16,706 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:16,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:16,706 INFO L82 PathProgramCache]: Analyzing trace with hash -344952837, now seen corresponding path program 9 times [2021-03-26 13:38:16,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:16,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91741397] [2021-03-26 13:38:16,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:16,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:16,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:16,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:16,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:38:16,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:16,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:38:16,771 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:38:16,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:38:16,780 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-26 13:38:16,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 13:38:16,793 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-26 13:38:16,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-26 13:38:16,823 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-26 13:38:16,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 13:38:16,857 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:38:16,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:38:16,884 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:38:16,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:38:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:16,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91741397] [2021-03-26 13:38:16,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:16,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:38:16,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352554640] [2021-03-26 13:38:16,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:38:16,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:16,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:38:16,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:38:16,910 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:38:16,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 211 transitions, 3900 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:16,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:16,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:38:16,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:19,476 INFO L129 PetriNetUnfolder]: 3603/14931 cut-off events. [2021-03-26 13:38:19,476 INFO L130 PetriNetUnfolder]: For 264869/269363 co-relation queries the response was YES. [2021-03-26 13:38:19,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85241 conditions, 14931 events. 3603/14931 cut-off events. For 264869/269363 co-relation queries the response was YES. Maximal size of possible extension queue 1815. Compared 222301 event pairs, 1292 based on Foata normal form. 5/14531 useless extension candidates. Maximal degree in co-relation 85176. Up to 4266 conditions per place. [2021-03-26 13:38:19,665 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 225 selfloop transitions, 102 changer transitions 1/344 dead transitions. [2021-03-26 13:38:19,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 344 transitions, 7065 flow [2021-03-26 13:38:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:38:19,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:38:19,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:38:19,669 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:38:19,669 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:38:19,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:38:19,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:19,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:38:19,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:19,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:19,678 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:19,679 INFO L185 Difference]: Start difference. First operand has 155 places, 211 transitions, 3900 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:38:19,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 344 transitions, 7065 flow [2021-03-26 13:38:20,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 344 transitions, 6716 flow, removed 150 selfloop flow, removed 3 redundant places. [2021-03-26 13:38:20,812 INFO L241 Difference]: Finished difference. Result has 169 places, 252 transitions, 5006 flow [2021-03-26 13:38:20,813 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=3736, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5006, PETRI_PLACES=169, PETRI_TRANSITIONS=252} [2021-03-26 13:38:20,813 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 119 predicate places. [2021-03-26 13:38:20,813 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:20,813 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 252 transitions, 5006 flow [2021-03-26 13:38:20,813 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 252 transitions, 5006 flow [2021-03-26 13:38:20,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 252 transitions, 5006 flow [2021-03-26 13:38:21,716 INFO L129 PetriNetUnfolder]: 0/6185 cut-off events. [2021-03-26 13:38:21,716 INFO L130 PetriNetUnfolder]: For 60035/62290 co-relation queries the response was YES. [2021-03-26 13:38:21,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20994 conditions, 6185 events. 0/6185 cut-off events. For 60035/62290 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 106966 event pairs, 0 based on Foata normal form. 29/5790 useless extension candidates. Maximal degree in co-relation 0. Up to 604 conditions per place. [2021-03-26 13:38:21,782 INFO L142 LiptonReduction]: Number of co-enabled transitions 1650 [2021-03-26 13:38:21,794 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:21,794 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:21,794 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 981 [2021-03-26 13:38:21,795 INFO L480 AbstractCegarLoop]: Abstraction has has 168 places, 252 transitions, 5006 flow [2021-03-26 13:38:21,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:21,795 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:21,795 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:21,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-26 13:38:21,795 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:21,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:21,796 INFO L82 PathProgramCache]: Analyzing trace with hash -902040587, now seen corresponding path program 10 times [2021-03-26 13:38:21,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:21,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805130109] [2021-03-26 13:38:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:21,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:21,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:21,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:21,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:38:21,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:21,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:38:21,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:21,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:38:21,831 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-26 13:38:21,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:38:21,853 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.3 percent of original size [2021-03-26 13:38:21,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:38:21,881 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:38:21,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:38:21,920 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:38:21,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:38:21,950 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:38:21,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:38:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:21,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805130109] [2021-03-26 13:38:21,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:21,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:38:21,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814948026] [2021-03-26 13:38:21,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:38:21,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:21,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:38:21,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:38:21,979 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:38:21,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 252 transitions, 5006 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:21,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:21,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:38:21,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:25,113 INFO L129 PetriNetUnfolder]: 3626/16548 cut-off events. [2021-03-26 13:38:25,113 INFO L130 PetriNetUnfolder]: For 335416/342545 co-relation queries the response was YES. [2021-03-26 13:38:25,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97499 conditions, 16548 events. 3626/16548 cut-off events. For 335416/342545 co-relation queries the response was YES. Maximal size of possible extension queue 2031. Compared 257424 event pairs, 1726 based on Foata normal form. 8/16072 useless extension candidates. Maximal degree in co-relation 97428. Up to 4214 conditions per place. [2021-03-26 13:38:25,366 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 267 selfloop transitions, 132 changer transitions 2/417 dead transitions. [2021-03-26 13:38:25,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 417 transitions, 8880 flow [2021-03-26 13:38:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:38:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:38:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:38:25,368 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:38:25,368 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:38:25,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:38:25,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:25,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:38:25,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:25,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:25,372 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:25,372 INFO L185 Difference]: Start difference. First operand has 168 places, 252 transitions, 5006 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:38:25,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 417 transitions, 8880 flow [2021-03-26 13:38:26,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 417 transitions, 8546 flow, removed 115 selfloop flow, removed 2 redundant places. [2021-03-26 13:38:26,658 INFO L241 Difference]: Finished difference. Result has 183 places, 286 transitions, 5922 flow [2021-03-26 13:38:26,658 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=4838, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5922, PETRI_PLACES=183, PETRI_TRANSITIONS=286} [2021-03-26 13:38:26,658 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 133 predicate places. [2021-03-26 13:38:26,658 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:26,658 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 286 transitions, 5922 flow [2021-03-26 13:38:26,659 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 286 transitions, 5922 flow [2021-03-26 13:38:26,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 182 places, 286 transitions, 5922 flow [2021-03-26 13:38:28,210 INFO L129 PetriNetUnfolder]: 0/8155 cut-off events. [2021-03-26 13:38:28,210 INFO L130 PetriNetUnfolder]: For 92373/95331 co-relation queries the response was YES. [2021-03-26 13:38:28,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28711 conditions, 8155 events. 0/8155 cut-off events. For 92373/95331 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 148280 event pairs, 0 based on Foata normal form. 113/7751 useless extension candidates. Maximal degree in co-relation 0. Up to 826 conditions per place. [2021-03-26 13:38:28,311 INFO L142 LiptonReduction]: Number of co-enabled transitions 1940 [2021-03-26 13:38:28,326 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:28,326 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:28,326 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1668 [2021-03-26 13:38:28,327 INFO L480 AbstractCegarLoop]: Abstraction has has 182 places, 286 transitions, 5922 flow [2021-03-26 13:38:28,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:28,327 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:28,327 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:28,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-26 13:38:28,327 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:28,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:28,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1148306967, now seen corresponding path program 11 times [2021-03-26 13:38:28,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:28,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297711792] [2021-03-26 13:38:28,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:28,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:28,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:28,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:28,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:38:28,349 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:38:28,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:38:28,356 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:38:28,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:38:28,365 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:38:28,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:38:28,379 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:38:28,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:38:28,397 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-26 13:38:28,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:38:28,419 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:38:28,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:38:28,448 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:38:28,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:38:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:28,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297711792] [2021-03-26 13:38:28,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:28,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:38:28,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768010072] [2021-03-26 13:38:28,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:38:28,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:28,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:38:28,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:38:28,478 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:38:28,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 286 transitions, 5922 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:28,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:28,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:38:28,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:33,214 INFO L129 PetriNetUnfolder]: 3892/19260 cut-off events. [2021-03-26 13:38:33,214 INFO L130 PetriNetUnfolder]: For 424826/434469 co-relation queries the response was YES. [2021-03-26 13:38:33,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115999 conditions, 19260 events. 3892/19260 cut-off events. For 424826/434469 co-relation queries the response was YES. Maximal size of possible extension queue 2378. Compared 314084 event pairs, 1407 based on Foata normal form. 11/18673 useless extension candidates. Maximal degree in co-relation 115921. Up to 5001 conditions per place. [2021-03-26 13:38:33,406 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 219 selfloop transitions, 173 changer transitions 1/409 dead transitions. [2021-03-26 13:38:33,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 409 transitions, 9196 flow [2021-03-26 13:38:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:38:33,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:38:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:38:33,407 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:38:33,407 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:38:33,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:38:33,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:33,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:38:33,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:33,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:33,410 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:33,410 INFO L185 Difference]: Start difference. First operand has 182 places, 286 transitions, 5922 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:38:33,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 409 transitions, 9196 flow [2021-03-26 13:38:35,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 409 transitions, 8819 flow, removed 126 selfloop flow, removed 3 redundant places. [2021-03-26 13:38:35,196 INFO L241 Difference]: Finished difference. Result has 196 places, 339 transitions, 7625 flow [2021-03-26 13:38:35,196 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=5707, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7625, PETRI_PLACES=196, PETRI_TRANSITIONS=339} [2021-03-26 13:38:35,196 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 146 predicate places. [2021-03-26 13:38:35,196 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:35,197 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 339 transitions, 7625 flow [2021-03-26 13:38:35,197 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 339 transitions, 7625 flow [2021-03-26 13:38:35,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 195 places, 339 transitions, 7625 flow [2021-03-26 13:38:37,275 INFO L129 PetriNetUnfolder]: 0/9323 cut-off events. [2021-03-26 13:38:37,275 INFO L130 PetriNetUnfolder]: For 125417/130025 co-relation queries the response was YES. [2021-03-26 13:38:37,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34443 conditions, 9323 events. 0/9323 cut-off events. For 125417/130025 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 172994 event pairs, 0 based on Foata normal form. 152/8901 useless extension candidates. Maximal degree in co-relation 0. Up to 956 conditions per place. [2021-03-26 13:38:37,347 INFO L142 LiptonReduction]: Number of co-enabled transitions 2272 [2021-03-26 13:38:37,363 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:37,363 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:37,363 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2167 [2021-03-26 13:38:37,364 INFO L480 AbstractCegarLoop]: Abstraction has has 195 places, 339 transitions, 7625 flow [2021-03-26 13:38:37,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:37,364 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:37,364 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:37,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-26 13:38:37,364 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:37,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:37,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1553004443, now seen corresponding path program 12 times [2021-03-26 13:38:37,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:37,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127973028] [2021-03-26 13:38:37,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:37,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:37,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:37,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:37,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:38:37,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:37,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:38:37,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:37,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:38:37,396 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-26 13:38:37,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 13:38:37,416 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.3 percent of original size [2021-03-26 13:38:37,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:38:37,444 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:38:37,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:38:37,486 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:38:37,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:38:37,516 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:38:37,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:38:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:37,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127973028] [2021-03-26 13:38:37,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:37,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:38:37,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981093232] [2021-03-26 13:38:37,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:38:37,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:37,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:38:37,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:38:37,543 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:38:37,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 339 transitions, 7625 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:37,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:37,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:38:37,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:42,485 INFO L129 PetriNetUnfolder]: 3971/20301 cut-off events. [2021-03-26 13:38:42,485 INFO L130 PetriNetUnfolder]: For 535489/545854 co-relation queries the response was YES. [2021-03-26 13:38:42,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130219 conditions, 20301 events. 3971/20301 cut-off events. For 535489/545854 co-relation queries the response was YES. Maximal size of possible extension queue 2479. Compared 337023 event pairs, 1815 based on Foata normal form. 14/19554 useless extension candidates. Maximal degree in co-relation 130135. Up to 4783 conditions per place. [2021-03-26 13:38:42,680 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 281 selfloop transitions, 205 changer transitions 2/504 dead transitions. [2021-03-26 13:38:42,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 504 transitions, 12007 flow [2021-03-26 13:38:42,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:38:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:38:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:38:42,682 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:38:42,682 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:38:42,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:38:42,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:42,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:38:42,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:42,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:42,684 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:42,684 INFO L185 Difference]: Start difference. First operand has 195 places, 339 transitions, 7625 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:38:42,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 504 transitions, 12007 flow [2021-03-26 13:38:44,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 504 transitions, 11723 flow, removed 85 selfloop flow, removed 2 redundant places. [2021-03-26 13:38:44,926 INFO L241 Difference]: Finished difference. Result has 210 places, 375 transitions, 8941 flow [2021-03-26 13:38:44,927 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=7437, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8941, PETRI_PLACES=210, PETRI_TRANSITIONS=375} [2021-03-26 13:38:44,927 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 160 predicate places. [2021-03-26 13:38:44,927 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:44,927 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 375 transitions, 8941 flow [2021-03-26 13:38:44,946 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 375 transitions, 8941 flow [2021-03-26 13:38:44,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 209 places, 375 transitions, 8941 flow [2021-03-26 13:38:47,647 INFO L129 PetriNetUnfolder]: 0/10977 cut-off events. [2021-03-26 13:38:47,648 INFO L130 PetriNetUnfolder]: For 172973/178709 co-relation queries the response was YES. [2021-03-26 13:38:47,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42492 conditions, 10977 events. 0/10977 cut-off events. For 172973/178709 co-relation queries the response was YES. Maximal size of possible extension queue 1385. Compared 209113 event pairs, 0 based on Foata normal form. 147/10512 useless extension candidates. Maximal degree in co-relation 0. Up to 1128 conditions per place. [2021-03-26 13:38:47,743 INFO L142 LiptonReduction]: Number of co-enabled transitions 2634 [2021-03-26 13:38:47,762 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:38:47,763 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:38:47,763 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2836 [2021-03-26 13:38:47,765 INFO L480 AbstractCegarLoop]: Abstraction has has 209 places, 375 transitions, 8941 flow [2021-03-26 13:38:47,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:47,765 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:38:47,765 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:38:47,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-26 13:38:47,765 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:38:47,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:38:47,766 INFO L82 PathProgramCache]: Analyzing trace with hash 825661975, now seen corresponding path program 13 times [2021-03-26 13:38:47,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:38:47,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68176632] [2021-03-26 13:38:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:38:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:38:47,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:47,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:38:47,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:47,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:38:47,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:38:47,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:38:47,830 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:38:47,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:38:47,841 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-26 13:38:47,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:38:47,857 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-26 13:38:47,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:38:47,876 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:38:47,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:38:47,899 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:38:47,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:38:47,930 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:38:47,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:38:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:38:47,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68176632] [2021-03-26 13:38:47,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:38:47,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:38:47,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445497077] [2021-03-26 13:38:47,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:38:47,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:38:47,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:38:47,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:38:47,958 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:38:47,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 375 transitions, 8941 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:47,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:38:47,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:38:47,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:38:54,228 INFO L129 PetriNetUnfolder]: 4096/23889 cut-off events. [2021-03-26 13:38:54,228 INFO L130 PetriNetUnfolder]: For 637832/649137 co-relation queries the response was YES. [2021-03-26 13:38:54,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149715 conditions, 23889 events. 4096/23889 cut-off events. For 637832/649137 co-relation queries the response was YES. Maximal size of possible extension queue 2905. Compared 418935 event pairs, 1914 based on Foata normal form. 25/22979 useless extension candidates. Maximal degree in co-relation 149624. Up to 5149 conditions per place. [2021-03-26 13:38:54,525 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 269 selfloop transitions, 238 changer transitions 1/524 dead transitions. [2021-03-26 13:38:54,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 524 transitions, 13191 flow [2021-03-26 13:38:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:38:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:38:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:38:54,527 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:38:54,527 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:38:54,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:38:54,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:38:54,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:38:54,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:54,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:54,529 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:38:54,529 INFO L185 Difference]: Start difference. First operand has 209 places, 375 transitions, 8941 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:38:54,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 524 transitions, 13191 flow [2021-03-26 13:38:58,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 524 transitions, 12806 flow, removed 130 selfloop flow, removed 3 redundant places. [2021-03-26 13:38:58,048 INFO L241 Difference]: Finished difference. Result has 223 places, 436 transitions, 10986 flow [2021-03-26 13:38:58,048 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=8656, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10986, PETRI_PLACES=223, PETRI_TRANSITIONS=436} [2021-03-26 13:38:58,048 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 173 predicate places. [2021-03-26 13:38:58,049 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:38:58,049 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 436 transitions, 10986 flow [2021-03-26 13:38:58,049 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 436 transitions, 10986 flow [2021-03-26 13:38:58,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 222 places, 436 transitions, 10986 flow [2021-03-26 13:39:01,771 INFO L129 PetriNetUnfolder]: 0/12611 cut-off events. [2021-03-26 13:39:01,771 INFO L130 PetriNetUnfolder]: For 239990/246870 co-relation queries the response was YES. [2021-03-26 13:39:01,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51389 conditions, 12611 events. 0/12611 cut-off events. For 239990/246870 co-relation queries the response was YES. Maximal size of possible extension queue 1595. Compared 245840 event pairs, 0 based on Foata normal form. 228/12108 useless extension candidates. Maximal degree in co-relation 0. Up to 1309 conditions per place. [2021-03-26 13:39:02,032 INFO L142 LiptonReduction]: Number of co-enabled transitions 3078 [2021-03-26 13:39:02,065 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:39:02,065 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:39:02,065 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4016 [2021-03-26 13:39:02,065 INFO L480 AbstractCegarLoop]: Abstraction has has 222 places, 436 transitions, 10986 flow [2021-03-26 13:39:02,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:02,066 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:39:02,066 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:39:02,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-26 13:39:02,066 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:39:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:39:02,066 INFO L82 PathProgramCache]: Analyzing trace with hash -742751195, now seen corresponding path program 14 times [2021-03-26 13:39:02,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:39:02,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086612685] [2021-03-26 13:39:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:39:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:39:02,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:39:02,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:39:02,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:39:02,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:39:02,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:39:02,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:39:02,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:39:02,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:39:02,169 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:39:02,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:39:02,185 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 13:39:02,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:39:02,206 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:39:02,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:39:02,247 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:39:02,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:39:02,280 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:39:02,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:39:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:39:02,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086612685] [2021-03-26 13:39:02,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:39:02,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:39:02,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969560357] [2021-03-26 13:39:02,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:39:02,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:39:02,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:39:02,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:39:02,311 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:39:02,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 436 transitions, 10986 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:02,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:39:02,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:39:02,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:39:10,619 INFO L129 PetriNetUnfolder]: 4071/24168 cut-off events. [2021-03-26 13:39:10,619 INFO L130 PetriNetUnfolder]: For 726016/736855 co-relation queries the response was YES. [2021-03-26 13:39:10,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159466 conditions, 24168 events. 4071/24168 cut-off events. For 726016/736855 co-relation queries the response was YES. Maximal size of possible extension queue 3055. Compared 425920 event pairs, 2127 based on Foata normal form. 22/23427 useless extension candidates. Maximal degree in co-relation 159369. Up to 4617 conditions per place. [2021-03-26 13:39:10,903 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 304 selfloop transitions, 276 changer transitions 2/598 dead transitions. [2021-03-26 13:39:10,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 598 transitions, 15970 flow [2021-03-26 13:39:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:39:10,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:39:10,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:39:10,905 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:39:10,905 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:39:10,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:39:10,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:39:10,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:39:10,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:10,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:10,907 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:10,907 INFO L185 Difference]: Start difference. First operand has 222 places, 436 transitions, 10986 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:39:10,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 598 transitions, 15970 flow [2021-03-26 13:39:14,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 598 transitions, 15516 flow, removed 165 selfloop flow, removed 2 redundant places. [2021-03-26 13:39:14,335 INFO L241 Difference]: Finished difference. Result has 237 places, 469 transitions, 12534 flow [2021-03-26 13:39:14,335 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=10622, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12534, PETRI_PLACES=237, PETRI_TRANSITIONS=469} [2021-03-26 13:39:14,336 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 187 predicate places. [2021-03-26 13:39:14,336 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:39:14,336 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 469 transitions, 12534 flow [2021-03-26 13:39:14,336 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 469 transitions, 12534 flow [2021-03-26 13:39:14,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 236 places, 469 transitions, 12534 flow [2021-03-26 13:39:18,547 INFO L129 PetriNetUnfolder]: 0/13440 cut-off events. [2021-03-26 13:39:18,547 INFO L130 PetriNetUnfolder]: For 285060/292478 co-relation queries the response was YES. [2021-03-26 13:39:18,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57637 conditions, 13440 events. 0/13440 cut-off events. For 285060/292478 co-relation queries the response was YES. Maximal size of possible extension queue 1679. Compared 264532 event pairs, 0 based on Foata normal form. 172/12774 useless extension candidates. Maximal degree in co-relation 0. Up to 1397 conditions per place. [2021-03-26 13:39:18,684 INFO L142 LiptonReduction]: Number of co-enabled transitions 3334 [2021-03-26 13:39:18,714 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:39:18,714 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:39:18,714 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4378 [2021-03-26 13:39:18,714 INFO L480 AbstractCegarLoop]: Abstraction has has 236 places, 469 transitions, 12534 flow [2021-03-26 13:39:18,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:18,715 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:39:18,715 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:39:18,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-26 13:39:18,715 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:39:18,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:39:18,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1845019367, now seen corresponding path program 15 times [2021-03-26 13:39:18,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:39:18,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566800739] [2021-03-26 13:39:18,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:39:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:39:18,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:39:18,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:39:18,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:39:18,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:39:18,733 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:39:18,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:39:18,739 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:39:18,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:39:18,748 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 13:39:18,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:39:18,770 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-26 13:39:18,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:39:18,788 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-26 13:39:18,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:39:18,812 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:39:18,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:39:18,842 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:39:18,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:39:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:39:18,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566800739] [2021-03-26 13:39:18,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:39:18,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:39:18,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010723681] [2021-03-26 13:39:18,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:39:18,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:39:18,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:39:18,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:39:18,869 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:39:18,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 469 transitions, 12534 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:18,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:39:18,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:39:18,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:39:27,427 INFO L129 PetriNetUnfolder]: 4075/24720 cut-off events. [2021-03-26 13:39:27,427 INFO L130 PetriNetUnfolder]: For 828291/839384 co-relation queries the response was YES. [2021-03-26 13:39:27,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169753 conditions, 24720 events. 4075/24720 cut-off events. For 828291/839384 co-relation queries the response was YES. Maximal size of possible extension queue 3079. Compared 438444 event pairs, 2089 based on Foata normal form. 29/23895 useless extension candidates. Maximal degree in co-relation 169649. Up to 5064 conditions per place. [2021-03-26 13:39:27,778 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 302 selfloop transitions, 282 changer transitions 1/601 dead transitions. [2021-03-26 13:39:27,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 601 transitions, 16764 flow [2021-03-26 13:39:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:39:27,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:39:27,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:39:27,780 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:39:27,780 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:39:27,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:39:27,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:39:27,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:39:27,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:27,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:27,782 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:27,782 INFO L185 Difference]: Start difference. First operand has 236 places, 469 transitions, 12534 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:39:27,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 601 transitions, 16764 flow [2021-03-26 13:39:33,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 601 transitions, 16344 flow, removed 147 selfloop flow, removed 3 redundant places. [2021-03-26 13:39:33,231 INFO L241 Difference]: Finished difference. Result has 250 places, 508 transitions, 14238 flow [2021-03-26 13:39:33,232 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=12208, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14238, PETRI_PLACES=250, PETRI_TRANSITIONS=508} [2021-03-26 13:39:33,232 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 200 predicate places. [2021-03-26 13:39:33,232 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:39:33,232 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 508 transitions, 14238 flow [2021-03-26 13:39:33,232 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 508 transitions, 14238 flow [2021-03-26 13:39:33,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 249 places, 508 transitions, 14238 flow [2021-03-26 13:39:37,542 INFO L129 PetriNetUnfolder]: 0/13831 cut-off events. [2021-03-26 13:39:37,542 INFO L130 PetriNetUnfolder]: For 319754/328931 co-relation queries the response was YES. [2021-03-26 13:39:37,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61639 conditions, 13831 events. 0/13831 cut-off events. For 319754/328931 co-relation queries the response was YES. Maximal size of possible extension queue 1752. Compared 273715 event pairs, 0 based on Foata normal form. 145/13098 useless extension candidates. Maximal degree in co-relation 0. Up to 1442 conditions per place. [2021-03-26 13:39:37,900 INFO L142 LiptonReduction]: Number of co-enabled transitions 3718 [2021-03-26 13:39:37,948 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:39:37,949 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:39:37,949 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4717 [2021-03-26 13:39:37,949 INFO L480 AbstractCegarLoop]: Abstraction has has 249 places, 508 transitions, 14238 flow [2021-03-26 13:39:37,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:37,949 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:39:37,949 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:39:37,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-26 13:39:37,950 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:39:37,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:39:37,950 INFO L82 PathProgramCache]: Analyzing trace with hash 565321301, now seen corresponding path program 16 times [2021-03-26 13:39:37,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:39:37,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660828487] [2021-03-26 13:39:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:39:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:39:37,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:39:37,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:39:37,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:39:37,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:39:37,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:39:37,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:39:37,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:39:37,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 13:39:37,981 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:39:37,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:39:37,994 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:39:37,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:39:38,011 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:39:38,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:39:38,051 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:39:38,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:39:38,082 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:39:38,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:39:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:39:38,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660828487] [2021-03-26 13:39:38,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:39:38,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:39:38,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030185565] [2021-03-26 13:39:38,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:39:38,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:39:38,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:39:38,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:39:38,109 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:39:38,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 508 transitions, 14238 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:38,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:39:38,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:39:38,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:39:47,297 INFO L129 PetriNetUnfolder]: 4026/25615 cut-off events. [2021-03-26 13:39:47,297 INFO L130 PetriNetUnfolder]: For 915494/924736 co-relation queries the response was YES. [2021-03-26 13:39:47,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179844 conditions, 25615 events. 4026/25615 cut-off events. For 915494/924736 co-relation queries the response was YES. Maximal size of possible extension queue 3245. Compared 461098 event pairs, 2210 based on Foata normal form. 29/24731 useless extension candidates. Maximal degree in co-relation 179734. Up to 4766 conditions per place. [2021-03-26 13:39:47,731 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 349 selfloop transitions, 313 changer transitions 2/680 dead transitions. [2021-03-26 13:39:47,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 680 transitions, 20215 flow [2021-03-26 13:39:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:39:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:39:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:39:47,747 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:39:47,747 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:39:47,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:39:47,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:39:47,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:39:47,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:47,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:47,749 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:47,749 INFO L185 Difference]: Start difference. First operand has 249 places, 508 transitions, 14238 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:39:47,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 680 transitions, 20215 flow [2021-03-26 13:39:53,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 680 transitions, 19767 flow, removed 162 selfloop flow, removed 2 redundant places. [2021-03-26 13:39:53,516 INFO L241 Difference]: Finished difference. Result has 263 places, 556 transitions, 16293 flow [2021-03-26 13:39:53,516 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=13902, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16293, PETRI_PLACES=263, PETRI_TRANSITIONS=556} [2021-03-26 13:39:53,516 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 213 predicate places. [2021-03-26 13:39:53,516 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:39:53,519 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 556 transitions, 16293 flow [2021-03-26 13:39:53,519 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 556 transitions, 16293 flow [2021-03-26 13:39:53,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 262 places, 556 transitions, 16293 flow [2021-03-26 13:39:58,712 INFO L129 PetriNetUnfolder]: 0/15066 cut-off events. [2021-03-26 13:39:58,713 INFO L130 PetriNetUnfolder]: For 403476/412766 co-relation queries the response was YES. [2021-03-26 13:39:58,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70652 conditions, 15066 events. 0/15066 cut-off events. For 403476/412766 co-relation queries the response was YES. Maximal size of possible extension queue 1897. Compared 301603 event pairs, 0 based on Foata normal form. 220/14425 useless extension candidates. Maximal degree in co-relation 0. Up to 1565 conditions per place. [2021-03-26 13:39:58,880 INFO L142 LiptonReduction]: Number of co-enabled transitions 4060 [2021-03-26 13:39:58,922 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:39:58,923 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:39:58,923 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5407 [2021-03-26 13:39:58,923 INFO L480 AbstractCegarLoop]: Abstraction has has 262 places, 556 transitions, 16293 flow [2021-03-26 13:39:58,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:58,923 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:39:58,924 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:39:58,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-26 13:39:58,924 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:39:58,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:39:58,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1425841649, now seen corresponding path program 17 times [2021-03-26 13:39:58,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:39:58,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382623324] [2021-03-26 13:39:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:39:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:39:58,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:39:58,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:39:58,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:39:58,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:39:58,939 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:39:58,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:39:58,946 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:39:58,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:39:58,955 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 13:39:58,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:39:58,976 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-26 13:39:58,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:39:58,995 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:39:58,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:39:59,019 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:39:59,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:39:59,047 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:39:59,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:39:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:39:59,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382623324] [2021-03-26 13:39:59,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:39:59,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:39:59,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684526435] [2021-03-26 13:39:59,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:39:59,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:39:59,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:39:59,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:39:59,073 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:39:59,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 556 transitions, 16293 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:39:59,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:39:59,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:39:59,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:40:10,211 INFO L129 PetriNetUnfolder]: 4012/26060 cut-off events. [2021-03-26 13:40:10,211 INFO L130 PetriNetUnfolder]: For 1010931/1020615 co-relation queries the response was YES. [2021-03-26 13:40:10,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187337 conditions, 26060 events. 4012/26060 cut-off events. For 1010931/1020615 co-relation queries the response was YES. Maximal size of possible extension queue 3243. Compared 471693 event pairs, 2190 based on Foata normal form. 40/25136 useless extension candidates. Maximal degree in co-relation 187221. Up to 5064 conditions per place. [2021-03-26 13:40:10,708 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 314 selfloop transitions, 349 changer transitions 1/680 dead transitions. [2021-03-26 13:40:10,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 680 transitions, 20987 flow [2021-03-26 13:40:10,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:40:10,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:40:10,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:40:10,709 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:40:10,709 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:40:10,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:40:10,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:40:10,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:40:10,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:40:10,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:40:10,711 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:40:10,711 INFO L185 Difference]: Start difference. First operand has 262 places, 556 transitions, 16293 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:40:10,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 680 transitions, 20987 flow [2021-03-26 13:40:17,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 680 transitions, 20203 flow, removed 182 selfloop flow, removed 4 redundant places. [2021-03-26 13:40:17,446 INFO L241 Difference]: Finished difference. Result has 274 places, 583 transitions, 17514 flow [2021-03-26 13:40:17,446 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=15645, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17514, PETRI_PLACES=274, PETRI_TRANSITIONS=583} [2021-03-26 13:40:17,446 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 224 predicate places. [2021-03-26 13:40:17,446 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:40:17,446 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 274 places, 583 transitions, 17514 flow [2021-03-26 13:40:17,447 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 274 places, 583 transitions, 17514 flow [2021-03-26 13:40:17,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 273 places, 583 transitions, 17514 flow [2021-03-26 13:40:21,925 INFO L129 PetriNetUnfolder]: 0/15283 cut-off events. [2021-03-26 13:40:21,926 INFO L130 PetriNetUnfolder]: For 426354/435985 co-relation queries the response was YES. [2021-03-26 13:40:21,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73270 conditions, 15283 events. 0/15283 cut-off events. For 426354/435985 co-relation queries the response was YES. Maximal size of possible extension queue 1983. Compared 306626 event pairs, 0 based on Foata normal form. 204/14609 useless extension candidates. Maximal degree in co-relation 0. Up to 1589 conditions per place. [2021-03-26 13:40:22,076 INFO L142 LiptonReduction]: Number of co-enabled transitions 4360 [2021-03-26 13:40:22,120 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:40:22,121 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:40:22,121 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4675 [2021-03-26 13:40:22,121 INFO L480 AbstractCegarLoop]: Abstraction has has 273 places, 583 transitions, 17514 flow [2021-03-26 13:40:22,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:40:22,121 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:40:22,121 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:40:22,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-26 13:40:22,121 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:40:22,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:40:22,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1009115031, now seen corresponding path program 18 times [2021-03-26 13:40:22,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:40:22,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772068979] [2021-03-26 13:40:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:40:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:40:22,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:40:22,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:40:22,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:40:22,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:40:22,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:40:22,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:40:22,155 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 13:40:22,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:40:22,184 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:40:22,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:40:22,196 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-26 13:40:22,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:40:22,223 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:40:22,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:40:22,262 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:40:22,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:40:22,291 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:40:22,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:40:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:40:22,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772068979] [2021-03-26 13:40:22,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:40:22,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:40:22,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105874862] [2021-03-26 13:40:22,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:40:22,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:40:22,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:40:22,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:40:22,318 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:40:22,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 583 transitions, 17514 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:40:22,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:40:22,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:40:22,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:40:32,638 INFO L129 PetriNetUnfolder]: 4056/26505 cut-off events. [2021-03-26 13:40:32,638 INFO L130 PetriNetUnfolder]: For 1077000/1087137 co-relation queries the response was YES. [2021-03-26 13:40:32,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 195139 conditions, 26505 events. 4056/26505 cut-off events. For 1077000/1087137 co-relation queries the response was YES. Maximal size of possible extension queue 3360. Compared 482286 event pairs, 2267 based on Foata normal form. 46/25579 useless extension candidates. Maximal degree in co-relation 195018. Up to 4885 conditions per place. [2021-03-26 13:40:32,994 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 320 selfloop transitions, 384 changer transitions 2/722 dead transitions. [2021-03-26 13:40:32,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 722 transitions, 23098 flow [2021-03-26 13:40:32,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:40:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:40:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:40:32,996 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:40:32,996 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:40:32,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:40:32,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:40:32,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:40:33,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:40:33,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:40:33,006 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:40:33,006 INFO L185 Difference]: Start difference. First operand has 273 places, 583 transitions, 17514 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:40:33,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 722 transitions, 23098 flow [2021-03-26 13:40:40,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 722 transitions, 22301 flow, removed 183 selfloop flow, removed 3 redundant places. [2021-03-26 13:40:40,920 INFO L241 Difference]: Finished difference. Result has 286 places, 636 transitions, 19938 flow [2021-03-26 13:40:40,920 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=16901, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19938, PETRI_PLACES=286, PETRI_TRANSITIONS=636} [2021-03-26 13:40:40,922 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 236 predicate places. [2021-03-26 13:40:40,922 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:40:40,922 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 286 places, 636 transitions, 19938 flow [2021-03-26 13:40:40,922 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 286 places, 636 transitions, 19938 flow [2021-03-26 13:40:40,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 285 places, 636 transitions, 19938 flow [2021-03-26 13:40:45,852 INFO L129 PetriNetUnfolder]: 0/15800 cut-off events. [2021-03-26 13:40:45,852 INFO L130 PetriNetUnfolder]: For 478032/488974 co-relation queries the response was YES. [2021-03-26 13:40:45,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78355 conditions, 15800 events. 0/15800 cut-off events. For 478032/488974 co-relation queries the response was YES. Maximal size of possible extension queue 2062. Compared 318542 event pairs, 0 based on Foata normal form. 217/15106 useless extension candidates. Maximal degree in co-relation 0. Up to 1660 conditions per place. [2021-03-26 13:40:46,376 INFO L142 LiptonReduction]: Number of co-enabled transitions 4742 [2021-03-26 13:40:46,430 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:40:46,430 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:40:46,430 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5508 [2021-03-26 13:40:46,431 INFO L480 AbstractCegarLoop]: Abstraction has has 285 places, 636 transitions, 19938 flow [2021-03-26 13:40:46,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:40:46,432 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:40:46,432 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:40:46,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-26 13:40:46,432 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:40:46,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:40:46,432 INFO L82 PathProgramCache]: Analyzing trace with hash 231563487, now seen corresponding path program 19 times [2021-03-26 13:40:46,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:40:46,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269015488] [2021-03-26 13:40:46,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:40:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:40:46,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:40:46,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:40:46,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:40:46,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:40:46,485 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:40:46,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:40:46,504 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:40:46,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:40:46,513 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-26 13:40:46,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:40:46,537 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:40:46,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:40:46,554 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:40:46,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:40:46,596 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:40:46,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:40:46,629 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:40:46,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:40:46,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:40:46,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269015488] [2021-03-26 13:40:46,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:40:46,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:40:46,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984898043] [2021-03-26 13:40:46,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:40:46,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:40:46,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:40:46,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:40:46,665 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:40:46,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 636 transitions, 19938 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:40:46,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:40:46,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:40:46,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:40:57,658 INFO L129 PetriNetUnfolder]: 4065/26940 cut-off events. [2021-03-26 13:40:57,659 INFO L130 PetriNetUnfolder]: For 1131303/1141601 co-relation queries the response was YES. [2021-03-26 13:40:57,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200450 conditions, 26940 events. 4065/26940 cut-off events. For 1131303/1141601 co-relation queries the response was YES. Maximal size of possible extension queue 3359. Compared 491811 event pairs, 2205 based on Foata normal form. 47/25927 useless extension candidates. Maximal degree in co-relation 200323. Up to 5064 conditions per place. [2021-03-26 13:40:58,278 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 288 selfloop transitions, 433 changer transitions 2/739 dead transitions. [2021-03-26 13:40:58,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 739 transitions, 24252 flow [2021-03-26 13:40:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:40:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:40:58,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:40:58,280 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:40:58,280 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:40:58,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:40:58,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:40:58,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:40:58,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:40:58,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:40:58,282 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:40:58,282 INFO L185 Difference]: Start difference. First operand has 285 places, 636 transitions, 19938 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:40:58,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 739 transitions, 24252 flow [2021-03-26 13:41:07,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 739 transitions, 23574 flow, removed 129 selfloop flow, removed 4 redundant places. [2021-03-26 13:41:07,140 INFO L241 Difference]: Finished difference. Result has 296 places, 672 transitions, 21669 flow [2021-03-26 13:41:07,141 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=19382, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21669, PETRI_PLACES=296, PETRI_TRANSITIONS=672} [2021-03-26 13:41:07,141 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 246 predicate places. [2021-03-26 13:41:07,141 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:41:07,141 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 672 transitions, 21669 flow [2021-03-26 13:41:07,141 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 672 transitions, 21669 flow [2021-03-26 13:41:07,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 295 places, 672 transitions, 21669 flow [2021-03-26 13:41:11,346 INFO L129 PetriNetUnfolder]: 0/15956 cut-off events. [2021-03-26 13:41:11,346 INFO L130 PetriNetUnfolder]: For 490958/502736 co-relation queries the response was YES. [2021-03-26 13:41:11,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79860 conditions, 15956 events. 0/15956 cut-off events. For 490958/502736 co-relation queries the response was YES. Maximal size of possible extension queue 2074. Compared 322011 event pairs, 0 based on Foata normal form. 212/15276 useless extension candidates. Maximal degree in co-relation 0. Up to 1681 conditions per place. [2021-03-26 13:41:11,500 INFO L142 LiptonReduction]: Number of co-enabled transitions 5040 [2021-03-26 13:41:11,558 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:41:11,559 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:41:11,559 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4418 [2021-03-26 13:41:11,559 INFO L480 AbstractCegarLoop]: Abstraction has has 295 places, 672 transitions, 21669 flow [2021-03-26 13:41:11,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:41:11,559 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:41:11,559 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:41:11,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-26 13:41:11,559 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:41:11,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:41:11,560 INFO L82 PathProgramCache]: Analyzing trace with hash -975072863, now seen corresponding path program 20 times [2021-03-26 13:41:11,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:41:11,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630204274] [2021-03-26 13:41:11,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:41:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:41:11,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:41:11,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:41:11,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:41:11,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:41:11,575 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:41:11,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:41:11,581 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 13:41:11,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:41:11,590 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:41:11,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:41:11,601 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-26 13:41:11,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:41:11,629 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:41:11,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:41:11,670 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:41:11,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:41:11,697 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:41:11,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:41:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:41:11,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630204274] [2021-03-26 13:41:11,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:41:11,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:41:11,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130405965] [2021-03-26 13:41:11,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:41:11,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:41:11,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:41:11,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:41:11,723 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:41:11,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 672 transitions, 21669 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:41:11,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:41:11,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:41:11,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:41:22,504 INFO L129 PetriNetUnfolder]: 4028/26811 cut-off events. [2021-03-26 13:41:22,505 INFO L130 PetriNetUnfolder]: For 1149441/1159854 co-relation queries the response was YES. [2021-03-26 13:41:23,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202090 conditions, 26811 events. 4028/26811 cut-off events. For 1149441/1159854 co-relation queries the response was YES. Maximal size of possible extension queue 3385. Compared 489061 event pairs, 2475 based on Foata normal form. 49/25872 useless extension candidates. Maximal degree in co-relation 201959. Up to 5075 conditions per place. [2021-03-26 13:41:23,118 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 281 selfloop transitions, 486 changer transitions 2/785 dead transitions. [2021-03-26 13:41:23,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 785 transitions, 26401 flow [2021-03-26 13:41:23,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:41:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:41:23,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:41:23,120 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:41:23,120 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:41:23,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:41:23,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:41:23,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:41:23,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:41:23,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:41:23,123 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:41:23,123 INFO L185 Difference]: Start difference. First operand has 295 places, 672 transitions, 21669 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:41:23,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 785 transitions, 26401 flow [2021-03-26 13:41:33,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 785 transitions, 25419 flow, removed 134 selfloop flow, removed 5 redundant places. [2021-03-26 13:41:33,249 INFO L241 Difference]: Finished difference. Result has 306 places, 692 transitions, 22994 flow [2021-03-26 13:41:33,249 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=20761, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=466, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22994, PETRI_PLACES=306, PETRI_TRANSITIONS=692} [2021-03-26 13:41:33,249 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 256 predicate places. [2021-03-26 13:41:33,250 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:41:33,250 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 692 transitions, 22994 flow [2021-03-26 13:41:33,250 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 692 transitions, 22994 flow [2021-03-26 13:41:33,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 305 places, 692 transitions, 22994 flow [2021-03-26 13:41:38,011 INFO L129 PetriNetUnfolder]: 0/16265 cut-off events. [2021-03-26 13:41:38,011 INFO L130 PetriNetUnfolder]: For 526213/538821 co-relation queries the response was YES. [2021-03-26 13:41:38,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82667 conditions, 16265 events. 0/16265 cut-off events. For 526213/538821 co-relation queries the response was YES. Maximal size of possible extension queue 2121. Compared 329302 event pairs, 0 based on Foata normal form. 269/15609 useless extension candidates. Maximal degree in co-relation 0. Up to 1727 conditions per place. [2021-03-26 13:41:38,193 INFO L142 LiptonReduction]: Number of co-enabled transitions 5260 [2021-03-26 13:41:38,265 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:41:38,265 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:41:38,266 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5016 [2021-03-26 13:41:38,267 INFO L480 AbstractCegarLoop]: Abstraction has has 305 places, 692 transitions, 22994 flow [2021-03-26 13:41:38,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:41:38,267 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:41:38,267 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:41:38,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-26 13:41:38,267 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:41:38,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:41:38,268 INFO L82 PathProgramCache]: Analyzing trace with hash 50421295, now seen corresponding path program 21 times [2021-03-26 13:41:38,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:41:38,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131500718] [2021-03-26 13:41:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:41:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:41:38,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:41:38,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:41:38,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:41:38,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:41:38,311 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:41:38,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:41:38,316 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:41:38,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:41:38,325 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:41:38,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:41:38,337 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-26 13:41:38,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:41:38,366 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-26 13:41:38,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 13:41:38,406 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:41:38,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:41:38,434 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:41:38,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:41:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:41:38,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131500718] [2021-03-26 13:41:38,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:41:38,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:41:38,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280234274] [2021-03-26 13:41:38,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:41:38,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:41:38,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:41:38,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:41:38,459 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:41:38,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 692 transitions, 22994 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:41:38,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:41:38,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:41:38,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:41:43,028 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2021-03-26 13:41:50,589 INFO L129 PetriNetUnfolder]: 4029/27567 cut-off events. [2021-03-26 13:41:50,590 INFO L130 PetriNetUnfolder]: For 1195065/1205648 co-relation queries the response was YES. [2021-03-26 13:41:51,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207737 conditions, 27567 events. 4029/27567 cut-off events. For 1195065/1205648 co-relation queries the response was YES. Maximal size of possible extension queue 3477. Compared 508053 event pairs, 2166 based on Foata normal form. 45/26532 useless extension candidates. Maximal degree in co-relation 207601. Up to 5064 conditions per place. [2021-03-26 13:41:51,409 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 385 selfloop transitions, 414 changer transitions 1/816 dead transitions. [2021-03-26 13:41:51,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 816 transitions, 28132 flow [2021-03-26 13:41:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:41:51,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:41:51,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:41:51,412 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:41:51,419 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:41:51,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:41:51,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:41:51,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:41:51,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:41:51,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:41:51,422 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:41:51,422 INFO L185 Difference]: Start difference. First operand has 305 places, 692 transitions, 22994 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:41:51,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 816 transitions, 28132 flow [2021-03-26 13:42:03,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 816 transitions, 27330 flow, removed 185 selfloop flow, removed 4 redundant places. [2021-03-26 13:42:03,336 INFO L241 Difference]: Finished difference. Result has 316 places, 734 transitions, 24793 flow [2021-03-26 13:42:03,337 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=22394, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=372, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24793, PETRI_PLACES=316, PETRI_TRANSITIONS=734} [2021-03-26 13:42:03,337 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 266 predicate places. [2021-03-26 13:42:03,337 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:42:03,337 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 316 places, 734 transitions, 24793 flow [2021-03-26 13:42:03,338 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 316 places, 734 transitions, 24793 flow [2021-03-26 13:42:03,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 315 places, 734 transitions, 24793 flow [2021-03-26 13:42:08,211 INFO L129 PetriNetUnfolder]: 0/16825 cut-off events. [2021-03-26 13:42:08,211 INFO L130 PetriNetUnfolder]: For 548261/561049 co-relation queries the response was YES. [2021-03-26 13:42:08,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86861 conditions, 16825 events. 0/16825 cut-off events. For 548261/561049 co-relation queries the response was YES. Maximal size of possible extension queue 2226. Compared 342304 event pairs, 0 based on Foata normal form. 283/16133 useless extension candidates. Maximal degree in co-relation 0. Up to 1788 conditions per place. [2021-03-26 13:42:08,372 INFO L142 LiptonReduction]: Number of co-enabled transitions 5542 [2021-03-26 13:42:08,445 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:42:08,445 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:42:08,445 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5108 [2021-03-26 13:42:08,445 INFO L480 AbstractCegarLoop]: Abstraction has has 315 places, 734 transitions, 24793 flow [2021-03-26 13:42:08,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:42:08,445 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:42:08,445 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:42:08,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-26 13:42:08,446 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:42:08,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:42:08,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1820257003, now seen corresponding path program 22 times [2021-03-26 13:42:08,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:42:08,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278748442] [2021-03-26 13:42:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:42:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:42:08,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:42:08,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:42:08,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:42:08,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:42:08,464 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:42:08,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:42:08,470 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 13:42:08,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:42:08,479 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:42:08,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:42:08,491 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:42:08,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:42:08,508 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:42:08,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:42:08,549 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:42:08,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:42:08,577 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:42:08,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:42:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:42:08,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278748442] [2021-03-26 13:42:08,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:42:08,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:42:08,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006623275] [2021-03-26 13:42:08,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:42:08,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:42:08,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:42:08,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:42:08,603 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:42:08,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 734 transitions, 24793 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:42:08,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:42:08,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:42:08,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:42:20,561 INFO L129 PetriNetUnfolder]: 3997/27776 cut-off events. [2021-03-26 13:42:20,561 INFO L130 PetriNetUnfolder]: For 1201483/1212061 co-relation queries the response was YES. [2021-03-26 13:42:20,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209620 conditions, 27776 events. 3997/27776 cut-off events. For 1201483/1212061 co-relation queries the response was YES. Maximal size of possible extension queue 3514. Compared 513570 event pairs, 2334 based on Foata normal form. 55/26759 useless extension candidates. Maximal degree in co-relation 209480. Up to 5075 conditions per place. [2021-03-26 13:42:20,984 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 264 selfloop transitions, 546 changer transitions 2/828 dead transitions. [2021-03-26 13:42:20,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 828 transitions, 29083 flow [2021-03-26 13:42:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:42:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:42:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:42:20,985 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:42:20,985 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:42:20,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:42:20,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:42:20,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:42:20,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:42:20,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:42:20,987 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:42:20,987 INFO L185 Difference]: Start difference. First operand has 315 places, 734 transitions, 24793 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:42:20,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 828 transitions, 29083 flow [2021-03-26 13:42:31,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 828 transitions, 28208 flow, removed 109 selfloop flow, removed 4 redundant places. [2021-03-26 13:42:31,863 INFO L241 Difference]: Finished difference. Result has 326 places, 756 transitions, 26138 flow [2021-03-26 13:42:31,863 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=23996, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26138, PETRI_PLACES=326, PETRI_TRANSITIONS=756} [2021-03-26 13:42:31,863 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 276 predicate places. [2021-03-26 13:42:31,863 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:42:31,864 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 326 places, 756 transitions, 26138 flow [2021-03-26 13:42:31,864 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 326 places, 756 transitions, 26138 flow [2021-03-26 13:42:31,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 325 places, 756 transitions, 26138 flow [2021-03-26 13:42:36,756 INFO L129 PetriNetUnfolder]: 0/17181 cut-off events. [2021-03-26 13:42:36,756 INFO L130 PetriNetUnfolder]: For 583923/597878 co-relation queries the response was YES. [2021-03-26 13:42:36,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89882 conditions, 17181 events. 0/17181 cut-off events. For 583923/597878 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 350615 event pairs, 0 based on Foata normal form. 291/16467 useless extension candidates. Maximal degree in co-relation 0. Up to 1830 conditions per place. [2021-03-26 13:42:36,915 INFO L142 LiptonReduction]: Number of co-enabled transitions 5752 [2021-03-26 13:42:36,994 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:42:36,994 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:42:36,994 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5131 [2021-03-26 13:42:36,994 INFO L480 AbstractCegarLoop]: Abstraction has has 325 places, 756 transitions, 26138 flow [2021-03-26 13:42:36,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:42:36,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:42:36,995 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:42:36,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-26 13:42:36,995 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:42:36,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:42:36,995 INFO L82 PathProgramCache]: Analyzing trace with hash -362432279, now seen corresponding path program 23 times [2021-03-26 13:42:36,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:42:36,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619092417] [2021-03-26 13:42:36,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:42:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:42:37,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:42:37,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:42:37,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:42:37,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:42:37,010 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:42:37,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:42:37,016 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 13:42:37,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:42:37,025 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-26 13:42:37,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:42:37,038 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-26 13:42:37,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:42:37,055 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-26 13:42:37,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:42:37,079 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:42:37,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:42:37,108 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:42:37,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:42:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:42:37,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619092417] [2021-03-26 13:42:37,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:42:37,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:42:37,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772712839] [2021-03-26 13:42:37,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:42:37,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:42:37,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:42:37,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:42:37,134 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:42:37,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 756 transitions, 26138 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:42:37,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:42:37,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:42:37,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:42:49,774 INFO L129 PetriNetUnfolder]: 3991/27841 cut-off events. [2021-03-26 13:42:49,774 INFO L130 PetriNetUnfolder]: For 1216017/1226777 co-relation queries the response was YES. [2021-03-26 13:42:50,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210875 conditions, 27841 events. 3991/27841 cut-off events. For 1216017/1226777 co-relation queries the response was YES. Maximal size of possible extension queue 3522. Compared 515320 event pairs, 2312 based on Foata normal form. 60/26813 useless extension candidates. Maximal degree in co-relation 210730. Up to 5075 conditions per place. [2021-03-26 13:42:50,211 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 234 selfloop transitions, 575 changer transitions 1/826 dead transitions. [2021-03-26 13:42:50,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 826 transitions, 29776 flow [2021-03-26 13:42:50,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:42:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:42:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:42:50,212 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:42:50,212 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:42:50,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:42:50,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:42:50,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:42:50,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:42:50,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:42:50,214 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:42:50,214 INFO L185 Difference]: Start difference. First operand has 325 places, 756 transitions, 26138 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:42:50,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 826 transitions, 29776 flow [2021-03-26 13:43:01,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 826 transitions, 28701 flow, removed 140 selfloop flow, removed 5 redundant places. [2021-03-26 13:43:01,880 INFO L241 Difference]: Finished difference. Result has 335 places, 781 transitions, 27549 flow [2021-03-26 13:43:01,880 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=25163, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=550, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27549, PETRI_PLACES=335, PETRI_TRANSITIONS=781} [2021-03-26 13:43:01,880 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 285 predicate places. [2021-03-26 13:43:01,881 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:43:01,881 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 335 places, 781 transitions, 27549 flow [2021-03-26 13:43:01,881 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 335 places, 781 transitions, 27549 flow [2021-03-26 13:43:01,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 334 places, 781 transitions, 27549 flow [2021-03-26 13:43:06,937 INFO L129 PetriNetUnfolder]: 0/17229 cut-off events. [2021-03-26 13:43:06,937 INFO L130 PetriNetUnfolder]: For 584596/600436 co-relation queries the response was YES. [2021-03-26 13:43:06,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90241 conditions, 17229 events. 0/17229 cut-off events. For 584596/600436 co-relation queries the response was YES. Maximal size of possible extension queue 2213. Compared 351324 event pairs, 0 based on Foata normal form. 288/16381 useless extension candidates. Maximal degree in co-relation 0. Up to 1836 conditions per place. [2021-03-26 13:43:07,124 INFO L142 LiptonReduction]: Number of co-enabled transitions 6006 [2021-03-26 13:43:07,208 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:43:07,208 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:43:07,208 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5327 [2021-03-26 13:43:07,208 INFO L480 AbstractCegarLoop]: Abstraction has has 334 places, 781 transitions, 27549 flow [2021-03-26 13:43:07,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:43:07,209 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:43:07,209 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:43:07,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-26 13:43:07,209 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:43:07,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:43:07,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1730551183, now seen corresponding path program 24 times [2021-03-26 13:43:07,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:43:07,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672487052] [2021-03-26 13:43:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:43:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:43:07,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:43:07,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:43:07,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:43:07,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:43:07,228 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:43:07,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:43:07,235 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 13:43:07,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:43:07,244 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:43:07,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:43:07,259 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-26 13:43:07,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:43:07,288 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:43:07,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:43:07,331 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:43:07,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:43:07,360 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:43:07,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:43:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:43:07,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672487052] [2021-03-26 13:43:07,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:43:07,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:43:07,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475596696] [2021-03-26 13:43:07,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:43:07,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:43:07,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:43:07,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:43:07,389 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:43:07,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 781 transitions, 27549 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:43:07,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:43:07,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:43:07,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:43:20,677 INFO L129 PetriNetUnfolder]: 3966/28053 cut-off events. [2021-03-26 13:43:20,678 INFO L130 PetriNetUnfolder]: For 1210800/1221560 co-relation queries the response was YES. [2021-03-26 13:43:21,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211793 conditions, 28053 events. 3966/28053 cut-off events. For 1210800/1221560 co-relation queries the response was YES. Maximal size of possible extension queue 3560. Compared 521213 event pairs, 2351 based on Foata normal form. 57/27005 useless extension candidates. Maximal degree in co-relation 211644. Up to 5075 conditions per place. [2021-03-26 13:43:21,216 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 279 selfloop transitions, 546 changer transitions 1/842 dead transitions. [2021-03-26 13:43:21,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 842 transitions, 30893 flow [2021-03-26 13:43:21,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:43:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:43:21,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:43:21,223 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:43:21,223 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:43:21,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:43:21,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:43:21,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:43:21,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:43:21,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:43:21,229 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:43:21,229 INFO L185 Difference]: Start difference. First operand has 334 places, 781 transitions, 27549 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:43:21,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 842 transitions, 30893 flow [2021-03-26 13:43:33,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 842 transitions, 29929 flow, removed 85 selfloop flow, removed 4 redundant places. [2021-03-26 13:43:33,577 INFO L241 Difference]: Finished difference. Result has 344 places, 796 transitions, 28339 flow [2021-03-26 13:43:33,578 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=26625, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28339, PETRI_PLACES=344, PETRI_TRANSITIONS=796} [2021-03-26 13:43:33,578 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 294 predicate places. [2021-03-26 13:43:33,578 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:43:33,578 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 796 transitions, 28339 flow [2021-03-26 13:43:33,579 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 796 transitions, 28339 flow [2021-03-26 13:43:33,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 343 places, 796 transitions, 28339 flow [2021-03-26 13:43:38,248 INFO L129 PetriNetUnfolder]: 0/17516 cut-off events. [2021-03-26 13:43:38,248 INFO L130 PetriNetUnfolder]: For 623572/640288 co-relation queries the response was YES. [2021-03-26 13:43:38,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93579 conditions, 17516 events. 0/17516 cut-off events. For 623572/640288 co-relation queries the response was YES. Maximal size of possible extension queue 2261. Compared 357980 event pairs, 0 based on Foata normal form. 298/16626 useless extension candidates. Maximal degree in co-relation 0. Up to 1871 conditions per place. [2021-03-26 13:43:38,433 INFO L142 LiptonReduction]: Number of co-enabled transitions 6150 [2021-03-26 13:43:38,519 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:43:38,520 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:43:38,520 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4942 [2021-03-26 13:43:38,520 INFO L480 AbstractCegarLoop]: Abstraction has has 343 places, 796 transitions, 28339 flow [2021-03-26 13:43:38,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:43:38,520 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:43:38,520 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:43:38,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-26 13:43:38,520 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:43:38,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:43:38,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1421970767, now seen corresponding path program 25 times [2021-03-26 13:43:38,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:43:38,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392762578] [2021-03-26 13:43:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:43:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:43:38,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:43:38,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:43:38,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:43:38,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:43:38,537 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:43:38,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:43:38,543 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 13:43:38,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:43:38,552 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:43:38,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:43:38,564 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-26 13:43:38,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-26 13:43:38,581 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-26 13:43:38,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-26 13:43:38,604 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:43:38,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:43:38,633 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:43:38,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:43:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:43:38,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392762578] [2021-03-26 13:43:38,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:43:38,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:43:38,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474337008] [2021-03-26 13:43:38,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:43:38,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:43:38,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:43:38,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:43:38,658 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:43:38,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 796 transitions, 28339 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:43:38,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:43:38,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:43:38,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:43:52,074 INFO L129 PetriNetUnfolder]: 3965/26556 cut-off events. [2021-03-26 13:43:52,074 INFO L130 PetriNetUnfolder]: For 1261554/1272161 co-relation queries the response was YES. [2021-03-26 13:43:52,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212621 conditions, 26556 events. 3965/26556 cut-off events. For 1261554/1272161 co-relation queries the response was YES. Maximal size of possible extension queue 3396. Compared 484142 event pairs, 2849 based on Foata normal form. 57/25367 useless extension candidates. Maximal degree in co-relation 212468. Up to 5075 conditions per place. [2021-03-26 13:43:52,461 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 311 selfloop transitions, 549 changer transitions 1/877 dead transitions. [2021-03-26 13:43:52,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 877 transitions, 32483 flow [2021-03-26 13:43:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:43:52,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:43:52,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:43:52,462 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:43:52,462 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:43:52,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:43:52,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:43:52,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:43:52,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:43:52,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:43:52,464 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:43:52,464 INFO L185 Difference]: Start difference. First operand has 343 places, 796 transitions, 28339 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:43:52,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 877 transitions, 32483 flow [2021-03-26 13:44:04,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 877 transitions, 31335 flow, removed 60 selfloop flow, removed 5 redundant places. [2021-03-26 13:44:04,817 INFO L241 Difference]: Finished difference. Result has 353 places, 833 transitions, 30037 flow [2021-03-26 13:44:04,818 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=27241, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=512, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=30037, PETRI_PLACES=353, PETRI_TRANSITIONS=833} [2021-03-26 13:44:04,818 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 303 predicate places. [2021-03-26 13:44:04,818 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:44:04,818 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 353 places, 833 transitions, 30037 flow [2021-03-26 13:44:04,818 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 353 places, 833 transitions, 30037 flow [2021-03-26 13:44:04,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 352 places, 833 transitions, 30037 flow [2021-03-26 13:44:09,739 INFO L129 PetriNetUnfolder]: 0/17518 cut-off events. [2021-03-26 13:44:09,739 INFO L130 PetriNetUnfolder]: For 644571/661222 co-relation queries the response was YES. [2021-03-26 13:44:09,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94637 conditions, 17518 events. 0/17518 cut-off events. For 644571/661222 co-relation queries the response was YES. Maximal size of possible extension queue 2269. Compared 358009 event pairs, 0 based on Foata normal form. 261/16609 useless extension candidates. Maximal degree in co-relation 0. Up to 1872 conditions per place. [2021-03-26 13:44:09,911 INFO L142 LiptonReduction]: Number of co-enabled transitions 6494 [2021-03-26 13:44:10,000 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:44:10,001 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:44:10,001 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5183 [2021-03-26 13:44:10,001 INFO L480 AbstractCegarLoop]: Abstraction has has 352 places, 833 transitions, 30037 flow [2021-03-26 13:44:10,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:44:10,001 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:44:10,001 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:44:10,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-26 13:44:10,001 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:44:10,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:44:10,002 INFO L82 PathProgramCache]: Analyzing trace with hash 796277687, now seen corresponding path program 26 times [2021-03-26 13:44:10,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:44:10,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129780022] [2021-03-26 13:44:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:44:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:44:10,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:44:10,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:44:10,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:44:10,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:44:10,016 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:44:10,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:44:10,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-26 13:44:10,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 13:44:10,031 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:44:10,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:44:10,043 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:44:10,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:44:10,060 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-26 13:44:10,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:44:10,082 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:44:10,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:44:10,112 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:44:10,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:44:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:44:10,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129780022] [2021-03-26 13:44:10,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:44:10,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:44:10,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48051952] [2021-03-26 13:44:10,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:44:10,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:44:10,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:44:10,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:44:10,138 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:44:10,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 833 transitions, 30037 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:44:10,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:44:10,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:44:10,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:44:26,473 INFO L129 PetriNetUnfolder]: 3760/33349 cut-off events. [2021-03-26 13:44:26,473 INFO L130 PetriNetUnfolder]: For 1529539/1540150 co-relation queries the response was YES. [2021-03-26 13:44:26,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 255500 conditions, 33349 events. 3760/33349 cut-off events. For 1529539/1540150 co-relation queries the response was YES. Maximal size of possible extension queue 4392. Compared 653873 event pairs, 2185 based on Foata normal form. 44/31950 useless extension candidates. Maximal degree in co-relation 255342. Up to 5712 conditions per place. [2021-03-26 13:44:26,973 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 709 selfloop transitions, 534 changer transitions 1/1260 dead transitions. [2021-03-26 13:44:26,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1260 transitions, 47915 flow [2021-03-26 13:44:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:44:26,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:44:26,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:44:26,974 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:44:26,974 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:44:26,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:44:26,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:44:26,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:44:26,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:44:26,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:44:26,976 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:44:26,976 INFO L185 Difference]: Start difference. First operand has 352 places, 833 transitions, 30037 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:44:26,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1260 transitions, 47915 flow [2021-03-26 13:44:44,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1260 transitions, 46694 flow, removed 149 selfloop flow, removed 4 redundant places. [2021-03-26 13:44:44,219 INFO L241 Difference]: Finished difference. Result has 364 places, 1039 transitions, 39188 flow [2021-03-26 13:44:44,220 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=29111, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=39188, PETRI_PLACES=364, PETRI_TRANSITIONS=1039} [2021-03-26 13:44:44,220 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 314 predicate places. [2021-03-26 13:44:44,220 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:44:44,220 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 364 places, 1039 transitions, 39188 flow [2021-03-26 13:44:44,221 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 364 places, 1039 transitions, 39188 flow [2021-03-26 13:44:44,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 363 places, 1039 transitions, 39188 flow [2021-03-26 13:44:52,762 INFO L129 PetriNetUnfolder]: 0/25085 cut-off events. [2021-03-26 13:44:52,763 INFO L130 PetriNetUnfolder]: For 961147/981240 co-relation queries the response was YES. [2021-03-26 13:44:52,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140918 conditions, 25085 events. 0/25085 cut-off events. For 961147/981240 co-relation queries the response was YES. Maximal size of possible extension queue 3490. Compared 540415 event pairs, 0 based on Foata normal form. 300/23760 useless extension candidates. Maximal degree in co-relation 0. Up to 2656 conditions per place. [2021-03-26 13:44:53,026 INFO L142 LiptonReduction]: Number of co-enabled transitions 7036 [2021-03-26 13:44:53,170 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:44:53,170 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:44:53,171 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8951 [2021-03-26 13:44:53,171 INFO L480 AbstractCegarLoop]: Abstraction has has 363 places, 1039 transitions, 39188 flow [2021-03-26 13:44:53,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:44:53,171 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:44:53,171 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:44:53,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-26 13:44:53,171 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:44:53,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:44:53,171 INFO L82 PathProgramCache]: Analyzing trace with hash 2033985517, now seen corresponding path program 27 times [2021-03-26 13:44:53,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:44:53,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088360010] [2021-03-26 13:44:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:44:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:44:53,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:44:53,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:44:53,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:44:53,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:44:53,187 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:44:53,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:44:53,193 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 13:44:53,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:44:53,202 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-26 13:44:53,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 13:44:53,215 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-26 13:44:53,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-26 13:44:53,232 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-03-26 13:44:53,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-26 13:44:53,272 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-03-26 13:44:53,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-26 13:44:53,300 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:44:53,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:44:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:44:53,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088360010] [2021-03-26 13:44:53,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:44:53,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:44:53,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274938070] [2021-03-26 13:44:53,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:44:53,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:44:53,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:44:53,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:44:53,326 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:44:53,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 1039 transitions, 39188 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:44:53,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:44:53,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:44:53,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:45:13,143 INFO L129 PetriNetUnfolder]: 3760/33861 cut-off events. [2021-03-26 13:45:13,143 INFO L130 PetriNetUnfolder]: For 1596220/1611186 co-relation queries the response was YES. [2021-03-26 13:45:14,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260994 conditions, 33861 events. 3760/33861 cut-off events. For 1596220/1611186 co-relation queries the response was YES. Maximal size of possible extension queue 4426. Compared 667709 event pairs, 2742 based on Foata normal form. 77/32359 useless extension candidates. Maximal degree in co-relation 260830. Up to 6174 conditions per place. [2021-03-26 13:45:14,187 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 258 selfloop transitions, 816 changer transitions 2/1092 dead transitions. [2021-03-26 13:45:14,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1092 transitions, 42806 flow [2021-03-26 13:45:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:45:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:45:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:45:14,188 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:45:14,189 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:45:14,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:45:14,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:45:14,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:45:14,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:45:14,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:45:14,193 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:45:14,193 INFO L185 Difference]: Start difference. First operand has 363 places, 1039 transitions, 39188 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:45:14,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1092 transitions, 42806 flow [2021-03-26 13:45:34,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 1092 transitions, 42129 flow, removed 123 selfloop flow, removed 3 redundant places. [2021-03-26 13:45:34,811 INFO L241 Difference]: Finished difference. Result has 374 places, 1051 transitions, 40926 flow [2021-03-26 13:45:34,811 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=38549, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=804, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=40926, PETRI_PLACES=374, PETRI_TRANSITIONS=1051} [2021-03-26 13:45:34,812 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 324 predicate places. [2021-03-26 13:45:34,812 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:45:34,812 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 1051 transitions, 40926 flow [2021-03-26 13:45:34,812 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 1051 transitions, 40926 flow [2021-03-26 13:45:34,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 373 places, 1051 transitions, 40926 flow [2021-03-26 13:45:43,053 INFO L129 PetriNetUnfolder]: 0/25078 cut-off events. [2021-03-26 13:45:43,053 INFO L130 PetriNetUnfolder]: For 1003105/1024953 co-relation queries the response was YES. [2021-03-26 13:45:43,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143108 conditions, 25078 events. 0/25078 cut-off events. For 1003105/1024953 co-relation queries the response was YES. Maximal size of possible extension queue 3494. Compared 540438 event pairs, 0 based on Foata normal form. 327/23804 useless extension candidates. Maximal degree in co-relation 0. Up to 2655 conditions per place. [2021-03-26 13:45:43,579 INFO L142 LiptonReduction]: Number of co-enabled transitions 7186 [2021-03-26 13:45:43,731 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:45:43,732 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:45:43,732 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8920 [2021-03-26 13:45:43,732 INFO L480 AbstractCegarLoop]: Abstraction has has 373 places, 1051 transitions, 40926 flow [2021-03-26 13:45:43,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:45:43,732 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:45:43,732 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:45:43,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-26 13:45:43,732 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:45:43,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:45:43,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2026903529, now seen corresponding path program 28 times [2021-03-26 13:45:43,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:45:43,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532174955] [2021-03-26 13:45:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:45:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:45:43,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:45:43,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:45:43,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:45:43,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:45:43,747 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:45:43,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:45:43,753 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 13:45:43,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:45:43,762 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:45:43,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:45:43,774 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-26 13:45:43,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-26 13:45:43,804 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-26 13:45:43,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 13:45:43,845 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:45:43,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:45:43,872 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:45:43,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:45:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:45:43,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532174955] [2021-03-26 13:45:43,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:45:43,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:45:43,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981080020] [2021-03-26 13:45:43,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:45:43,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:45:43,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:45:43,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:45:43,898 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:45:43,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 1051 transitions, 40926 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:45:43,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:45:43,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:45:43,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:46:05,394 INFO L129 PetriNetUnfolder]: 3755/33840 cut-off events. [2021-03-26 13:46:05,395 INFO L130 PetriNetUnfolder]: For 1620582/1635554 co-relation queries the response was YES. [2021-03-26 13:46:06,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263386 conditions, 33840 events. 3755/33840 cut-off events. For 1620582/1635554 co-relation queries the response was YES. Maximal size of possible extension queue 4419. Compared 667423 event pairs, 2826 based on Foata normal form. 69/32360 useless extension candidates. Maximal degree in co-relation 263218. Up to 6174 conditions per place. [2021-03-26 13:46:06,478 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 410 selfloop transitions, 686 changer transitions 1/1113 dead transitions. [2021-03-26 13:46:06,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 1113 transitions, 45051 flow [2021-03-26 13:46:06,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:46:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:46:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:46:06,480 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:46:06,480 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:46:06,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:46:06,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:46:06,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:46:06,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:46:06,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:46:06,482 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:46:06,482 INFO L185 Difference]: Start difference. First operand has 373 places, 1051 transitions, 40926 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:46:06,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 1113 transitions, 45051 flow [2021-03-26 13:46:28,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 1113 transitions, 43470 flow, removed 92 selfloop flow, removed 6 redundant places. [2021-03-26 13:46:28,394 INFO L241 Difference]: Finished difference. Result has 381 places, 1067 transitions, 41462 flow [2021-03-26 13:46:28,395 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=39422, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1051, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=670, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=41462, PETRI_PLACES=381, PETRI_TRANSITIONS=1067} [2021-03-26 13:46:28,395 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 331 predicate places. [2021-03-26 13:46:28,395 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:46:28,395 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 381 places, 1067 transitions, 41462 flow [2021-03-26 13:46:28,395 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 381 places, 1067 transitions, 41462 flow [2021-03-26 13:46:28,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 380 places, 1067 transitions, 41462 flow [2021-03-26 13:46:36,861 INFO L129 PetriNetUnfolder]: 0/25100 cut-off events. [2021-03-26 13:46:36,862 INFO L130 PetriNetUnfolder]: For 1000758/1021530 co-relation queries the response was YES. [2021-03-26 13:46:36,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143253 conditions, 25100 events. 0/25100 cut-off events. For 1000758/1021530 co-relation queries the response was YES. Maximal size of possible extension queue 3497. Compared 540563 event pairs, 0 based on Foata normal form. 319/23800 useless extension candidates. Maximal degree in co-relation 0. Up to 2659 conditions per place. [2021-03-26 13:46:37,413 INFO L142 LiptonReduction]: Number of co-enabled transitions 7382 [2021-03-26 13:46:37,567 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:46:37,567 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:46:37,567 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9172 [2021-03-26 13:46:37,568 INFO L480 AbstractCegarLoop]: Abstraction has has 380 places, 1067 transitions, 41462 flow [2021-03-26 13:46:37,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:46:37,568 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:46:37,568 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:46:37,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-26 13:46:37,568 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:46:37,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:46:37,568 INFO L82 PathProgramCache]: Analyzing trace with hash 321088207, now seen corresponding path program 29 times [2021-03-26 13:46:37,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:46:37,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671312475] [2021-03-26 13:46:37,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:46:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:46:37,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:46:37,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:46:37,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:46:37,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:46:37,604 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:46:37,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:46:37,614 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 13:46:37,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:46:37,624 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:46:37,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:46:37,637 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 13:46:37,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:46:37,653 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:46:37,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:46:37,674 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:46:37,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:46:37,701 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:46:37,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:46:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:46:37,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671312475] [2021-03-26 13:46:37,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:46:37,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:46:37,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791645385] [2021-03-26 13:46:37,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:46:37,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:46:37,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:46:37,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:46:37,726 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:46:37,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 1067 transitions, 41462 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:46:37,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:46:37,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:46:37,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:47:00,787 INFO L129 PetriNetUnfolder]: 3705/34128 cut-off events. [2021-03-26 13:47:00,788 INFO L130 PetriNetUnfolder]: For 1623367/1638339 co-relation queries the response was YES. [2021-03-26 13:47:01,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264932 conditions, 34128 events. 3705/34128 cut-off events. For 1623367/1638339 co-relation queries the response was YES. Maximal size of possible extension queue 4469. Compared 675959 event pairs, 2678 based on Foata normal form. 69/32605 useless extension candidates. Maximal degree in co-relation 264761. Up to 6174 conditions per place. [2021-03-26 13:47:01,664 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 492 selfloop transitions, 683 changer transitions 2/1193 dead transitions. [2021-03-26 13:47:01,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 1193 transitions, 48336 flow [2021-03-26 13:47:01,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 13:47:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 13:47:01,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-03-26 13:47:01,665 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-03-26 13:47:01,665 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-03-26 13:47:01,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-03-26 13:47:01,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:47:01,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-03-26 13:47:01,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:47:01,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:47:01,667 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:47:01,667 INFO L185 Difference]: Start difference. First operand has 380 places, 1067 transitions, 41462 flow. Second operand 10 states and 934 transitions. [2021-03-26 13:47:01,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 1193 transitions, 48336 flow [2021-03-26 13:47:21,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 1193 transitions, 46914 flow, removed 70 selfloop flow, removed 5 redundant places. [2021-03-26 13:47:21,773 INFO L241 Difference]: Finished difference. Result has 389 places, 1104 transitions, 43212 flow [2021-03-26 13:47:21,774 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=40124, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=646, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=43212, PETRI_PLACES=389, PETRI_TRANSITIONS=1104} [2021-03-26 13:47:21,774 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 339 predicate places. [2021-03-26 13:47:21,774 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:47:21,775 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 1104 transitions, 43212 flow [2021-03-26 13:47:21,775 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 1104 transitions, 43212 flow [2021-03-26 13:47:21,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 388 places, 1104 transitions, 43212 flow [2021-03-26 13:47:31,424 INFO L129 PetriNetUnfolder]: 0/25597 cut-off events. [2021-03-26 13:47:31,424 INFO L130 PetriNetUnfolder]: For 1057919/1082488 co-relation queries the response was YES. [2021-03-26 13:47:31,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148076 conditions, 25597 events. 0/25597 cut-off events. For 1057919/1082488 co-relation queries the response was YES. Maximal size of possible extension queue 3587. Compared 553291 event pairs, 0 based on Foata normal form. 339/24294 useless extension candidates. Maximal degree in co-relation 0. Up to 2721 conditions per place. [2021-03-26 13:47:31,684 INFO L142 LiptonReduction]: Number of co-enabled transitions 7664 [2021-03-26 13:47:31,846 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:47:31,846 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:47:31,846 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10072 [2021-03-26 13:47:31,847 INFO L480 AbstractCegarLoop]: Abstraction has has 388 places, 1104 transitions, 43212 flow [2021-03-26 13:47:31,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:47:31,847 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:47:31,847 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:47:31,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-26 13:47:31,847 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 13:47:31,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:47:31,847 INFO L82 PathProgramCache]: Analyzing trace with hash 198675545, now seen corresponding path program 30 times [2021-03-26 13:47:31,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:47:31,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417381547] [2021-03-26 13:47:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:47:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:47:31,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:47:31,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:47:31,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:47:31,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:47:31,862 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-26 13:47:31,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:47:31,867 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-26 13:47:31,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 13:47:31,876 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-26 13:47:31,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 13:47:31,887 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-26 13:47:31,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-26 13:47:31,904 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-26 13:47:31,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-26 13:47:31,927 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-03-26 13:47:31,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-26 13:47:31,954 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-03-26 13:47:31,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-26 13:47:31,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:47:31,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417381547] [2021-03-26 13:47:31,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:47:31,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:47:31,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348770889] [2021-03-26 13:47:31,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:47:31,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:47:31,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:47:31,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:47:31,980 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-03-26 13:47:31,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 1104 transitions, 43212 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:47:31,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:47:31,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-03-26 13:47:31,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand