/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 08:09:54,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 08:09:54,985 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 08:09:54,999 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 08:09:55,000 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 08:09:55,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 08:09:55,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 08:09:55,001 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 08:09:55,001 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 08:09:55,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 08:09:55,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 08:09:55,002 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 08:09:55,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 08:09:55,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 08:09:55,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 08:09:55,003 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 08:09:55,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 08:09:55,003 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 08:09:55,003 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 08:09:55,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 08:09:55,004 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 08:09:55,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 08:09:55,004 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 08:09:55,004 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 08:09:55,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 08:09:55,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 08:09:55,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 08:09:55,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 08:09:55,005 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 08:09:55,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 08:09:55,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 08:09:55,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 08:09:55,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 08:09:55,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 08:09:55,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 08:09:55,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 08:09:55,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 08:09:55,180 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 08:09:55,180 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 08:09:55,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-30 08:09:56,124 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 08:09:56,395 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 08:09:56,395 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-30 08:09:56,405 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e5ac4c5e/09d404ecebea42bdbfbc270dfca02d3d/FLAG9be2fe7a1 [2023-11-30 08:09:56,421 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e5ac4c5e/09d404ecebea42bdbfbc270dfca02d3d [2023-11-30 08:09:56,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 08:09:56,425 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 08:09:56,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 08:09:56,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 08:09:56,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 08:09:56,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 08:09:56" (1/1) ... [2023-11-30 08:09:56,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@378ff1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56, skipping insertion in model container [2023-11-30 08:09:56,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 08:09:56" (1/1) ... [2023-11-30 08:09:56,471 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 08:09:56,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 08:09:56,780 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 08:09:56,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 08:09:56,883 INFO L206 MainTranslator]: Completed translation [2023-11-30 08:09:56,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56 WrapperNode [2023-11-30 08:09:56,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 08:09:56,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 08:09:56,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 08:09:56,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 08:09:56,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56" (1/1) ... [2023-11-30 08:09:56,919 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56" (1/1) ... [2023-11-30 08:09:56,958 INFO L138 Inliner]: procedures = 279, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 244 [2023-11-30 08:09:56,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 08:09:56,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 08:09:56,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 08:09:56,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 08:09:56,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56" (1/1) ... [2023-11-30 08:09:56,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56" (1/1) ... [2023-11-30 08:09:56,979 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56" (1/1) ... [2023-11-30 08:09:56,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56" (1/1) ... [2023-11-30 08:09:56,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56" (1/1) ... [2023-11-30 08:09:56,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56" (1/1) ... [2023-11-30 08:09:56,995 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56" (1/1) ... [2023-11-30 08:09:56,996 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56" (1/1) ... [2023-11-30 08:09:56,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 08:09:56,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 08:09:56,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 08:09:56,999 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 08:09:57,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56" (1/1) ... [2023-11-30 08:09:57,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 08:09:57,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 08:09:57,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 08:09:57,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 08:09:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 08:09:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-30 08:09:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-30 08:09:57,089 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-30 08:09:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 08:09:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 08:09:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 08:09:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-30 08:09:57,091 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-30 08:09:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 08:09:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 08:09:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 08:09:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 08:09:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-30 08:09:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 08:09:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 08:09:57,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 08:09:57,093 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 08:09:57,229 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 08:09:57,232 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 08:09:57,512 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 08:09:57,533 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 08:09:57,533 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-30 08:09:57,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 08:09:57 BoogieIcfgContainer [2023-11-30 08:09:57,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 08:09:57,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 08:09:57,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 08:09:57,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 08:09:57,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 08:09:56" (1/3) ... [2023-11-30 08:09:57,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6621bea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 08:09:57, skipping insertion in model container [2023-11-30 08:09:57,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:09:56" (2/3) ... [2023-11-30 08:09:57,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6621bea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 08:09:57, skipping insertion in model container [2023-11-30 08:09:57,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 08:09:57" (3/3) ... [2023-11-30 08:09:57,539 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2023-11-30 08:09:57,550 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 08:09:57,550 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-30 08:09:57,551 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 08:09:57,617 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-30 08:09:57,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 257 transitions, 534 flow [2023-11-30 08:09:57,756 INFO L124 PetriNetUnfolderBase]: 54/503 cut-off events. [2023-11-30 08:09:57,757 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-30 08:09:57,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 503 events. 54/503 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2142 event pairs, 0 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 247. Up to 8 conditions per place. [2023-11-30 08:09:57,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 257 transitions, 534 flow [2023-11-30 08:09:57,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 257 transitions, 534 flow [2023-11-30 08:09:57,790 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 08:09:57,795 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d31beb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 08:09:57,795 INFO L363 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-30 08:09:57,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 08:09:57,807 INFO L124 PetriNetUnfolderBase]: 3/72 cut-off events. [2023-11-30 08:09:57,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 08:09:57,807 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:09:57,808 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:09:57,808 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-30 08:09:57,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:09:57,811 INFO L85 PathProgramCache]: Analyzing trace with hash 844555090, now seen corresponding path program 1 times [2023-11-30 08:09:57,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:09:57,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147014221] [2023-11-30 08:09:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:09:57,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:09:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:09:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:09:58,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:09:58,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147014221] [2023-11-30 08:09:58,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147014221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:09:58,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:09:58,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 08:09:58,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588494406] [2023-11-30 08:09:58,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:09:58,165 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 08:09:58,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:09:58,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 08:09:58,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 08:09:58,193 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 257 [2023-11-30 08:09:58,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 257 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:09:58,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:09:58,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 257 [2023-11-30 08:09:58,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:09:58,474 INFO L124 PetriNetUnfolderBase]: 165/1368 cut-off events. [2023-11-30 08:09:58,474 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-30 08:09:58,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 1368 events. 165/1368 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9917 event pairs, 118 based on Foata normal form. 211/1434 useless extension candidates. Maximal degree in co-relation 1166. Up to 250 conditions per place. [2023-11-30 08:09:58,482 INFO L140 encePairwiseOnDemand]: 233/257 looper letters, 34 selfloop transitions, 4 changer transitions 0/243 dead transitions. [2023-11-30 08:09:58,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 243 transitions, 582 flow [2023-11-30 08:09:58,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 08:09:58,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 08:09:58,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1094 transitions. [2023-11-30 08:09:58,496 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8513618677042801 [2023-11-30 08:09:58,496 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1094 transitions. [2023-11-30 08:09:58,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1094 transitions. [2023-11-30 08:09:58,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:09:58,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1094 transitions. [2023-11-30 08:09:58,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.8) internal successors, (1094), 5 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:09:58,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:09:58,510 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:09:58,513 INFO L307 CegarLoopForPetriNet]: 238 programPoint places, -1 predicate places. [2023-11-30 08:09:58,513 INFO L500 AbstractCegarLoop]: Abstraction has has 237 places, 243 transitions, 582 flow [2023-11-30 08:09:58,513 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:09:58,513 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:09:58,513 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:09:58,514 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 08:09:58,514 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-30 08:09:58,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:09:58,515 INFO L85 PathProgramCache]: Analyzing trace with hash -391740233, now seen corresponding path program 1 times [2023-11-30 08:09:58,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:09:58,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416666526] [2023-11-30 08:09:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:09:58,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:09:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 08:09:58,561 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 08:09:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 08:09:58,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 08:09:58,596 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 08:09:58,597 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-30 08:09:58,600 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-30 08:09:58,600 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-30 08:09:58,600 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-30 08:09:58,600 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-30 08:09:58,601 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-30 08:09:58,601 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-30 08:09:58,601 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-30 08:09:58,601 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-30 08:09:58,601 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-11-30 08:09:58,601 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-30 08:09:58,601 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-30 08:09:58,602 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-30 08:09:58,602 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 18 remaining) [2023-11-30 08:09:58,603 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-30 08:09:58,603 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-30 08:09:58,603 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-30 08:09:58,603 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-30 08:09:58,603 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 08:09:58,604 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-30 08:09:58,605 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 08:09:58,606 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-30 08:09:58,671 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-30 08:09:58,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 400 transitions, 844 flow [2023-11-30 08:09:58,904 INFO L124 PetriNetUnfolderBase]: 197/1543 cut-off events. [2023-11-30 08:09:58,904 INFO L125 PetriNetUnfolderBase]: For 72/84 co-relation queries the response was YES. [2023-11-30 08:09:58,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1632 conditions, 1543 events. 197/1543 cut-off events. For 72/84 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 10360 event pairs, 1 based on Foata normal form. 0/1254 useless extension candidates. Maximal degree in co-relation 948. Up to 32 conditions per place. [2023-11-30 08:09:58,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 365 places, 400 transitions, 844 flow [2023-11-30 08:09:58,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 400 transitions, 844 flow [2023-11-30 08:09:58,937 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 08:09:58,940 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d31beb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 08:09:58,941 INFO L363 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-30 08:09:58,947 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 08:09:58,947 INFO L124 PetriNetUnfolderBase]: 3/73 cut-off events. [2023-11-30 08:09:58,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 08:09:58,947 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:09:58,948 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:09:58,948 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-30 08:09:58,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:09:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash -563254102, now seen corresponding path program 1 times [2023-11-30 08:09:58,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:09:58,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937475948] [2023-11-30 08:09:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:09:58,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:09:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:09:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:09:59,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:09:59,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937475948] [2023-11-30 08:09:59,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937475948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:09:59,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:09:59,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 08:09:59,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853225011] [2023-11-30 08:09:59,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:09:59,042 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 08:09:59,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:09:59,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 08:09:59,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 08:09:59,047 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 400 [2023-11-30 08:09:59,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 400 transitions, 844 flow. Second operand has 4 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:09:59,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:09:59,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 400 [2023-11-30 08:09:59,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:10:10,580 INFO L124 PetriNetUnfolderBase]: 17464/73488 cut-off events. [2023-11-30 08:10:10,580 INFO L125 PetriNetUnfolderBase]: For 9648/9648 co-relation queries the response was YES. [2023-11-30 08:10:11,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98991 conditions, 73488 events. 17464/73488 cut-off events. For 9648/9648 co-relation queries the response was YES. Maximal size of possible extension queue 1958. Compared 1114101 event pairs, 14926 based on Foata normal form. 16288/83479 useless extension candidates. Maximal degree in co-relation 34126. Up to 21969 conditions per place. [2023-11-30 08:10:11,748 INFO L140 encePairwiseOnDemand]: 363/400 looper letters, 59 selfloop transitions, 4 changer transitions 0/377 dead transitions. [2023-11-30 08:10:11,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 377 transitions, 924 flow [2023-11-30 08:10:11,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 08:10:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 08:10:11,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1687 transitions. [2023-11-30 08:10:11,752 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8435 [2023-11-30 08:10:11,752 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1687 transitions. [2023-11-30 08:10:11,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1687 transitions. [2023-11-30 08:10:11,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:10:11,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1687 transitions. [2023-11-30 08:10:11,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 337.4) internal successors, (1687), 5 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:11,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 400.0) internal successors, (2400), 6 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:11,758 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 400.0) internal successors, (2400), 6 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:11,759 INFO L307 CegarLoopForPetriNet]: 365 programPoint places, -2 predicate places. [2023-11-30 08:10:11,759 INFO L500 AbstractCegarLoop]: Abstraction has has 363 places, 377 transitions, 924 flow [2023-11-30 08:10:11,760 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:11,760 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:10:11,760 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:10:11,760 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 08:10:11,761 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-30 08:10:11,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:10:11,761 INFO L85 PathProgramCache]: Analyzing trace with hash 221244204, now seen corresponding path program 1 times [2023-11-30 08:10:11,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:10:11,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916221566] [2023-11-30 08:10:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:10:11,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:10:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:10:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:10:11,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:10:11,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916221566] [2023-11-30 08:10:11,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916221566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 08:10:11,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500012482] [2023-11-30 08:10:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:10:11,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 08:10:11,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 08:10:11,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 08:10:11,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-30 08:10:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:10:12,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 08:10:12,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 08:10:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:10:12,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 08:10:12,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500012482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:10:12,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 08:10:12,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 08:10:12,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378093790] [2023-11-30 08:10:12,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:10:12,284 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 08:10:12,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:10:12,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 08:10:12,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 08:10:12,289 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 400 [2023-11-30 08:10:12,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 377 transitions, 924 flow. Second operand has 6 states, 6 states have (on average 320.5) internal successors, (1923), 6 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:12,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:10:12,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 400 [2023-11-30 08:10:12,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:10:23,401 INFO L124 PetriNetUnfolderBase]: 17452/73525 cut-off events. [2023-11-30 08:10:23,401 INFO L125 PetriNetUnfolderBase]: For 17740/19774 co-relation queries the response was YES. [2023-11-30 08:10:24,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120981 conditions, 73525 events. 17452/73525 cut-off events. For 17740/19774 co-relation queries the response was YES. Maximal size of possible extension queue 1958. Compared 1115177 event pairs, 8977 based on Foata normal form. 23/67272 useless extension candidates. Maximal degree in co-relation 41434. Up to 21948 conditions per place. [2023-11-30 08:10:24,696 INFO L140 encePairwiseOnDemand]: 394/400 looper letters, 63 selfloop transitions, 7 changer transitions 0/384 dead transitions. [2023-11-30 08:10:24,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 384 transitions, 1092 flow [2023-11-30 08:10:24,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 08:10:24,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 08:10:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2297 transitions. [2023-11-30 08:10:24,700 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8203571428571429 [2023-11-30 08:10:24,700 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2297 transitions. [2023-11-30 08:10:24,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2297 transitions. [2023-11-30 08:10:24,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:10:24,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2297 transitions. [2023-11-30 08:10:24,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 328.14285714285717) internal successors, (2297), 7 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:24,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 400.0) internal successors, (3200), 8 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:24,709 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 400.0) internal successors, (3200), 8 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:24,710 INFO L307 CegarLoopForPetriNet]: 365 programPoint places, 3 predicate places. [2023-11-30 08:10:24,710 INFO L500 AbstractCegarLoop]: Abstraction has has 368 places, 384 transitions, 1092 flow [2023-11-30 08:10:24,711 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 320.5) internal successors, (1923), 6 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:24,711 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:10:24,711 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:10:24,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-30 08:10:24,916 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 08:10:24,916 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-30 08:10:24,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:10:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1731363302, now seen corresponding path program 1 times [2023-11-30 08:10:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:10:24,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907877079] [2023-11-30 08:10:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:10:24,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:10:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:10:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 08:10:24,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:10:24,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907877079] [2023-11-30 08:10:24,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907877079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:10:24,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:10:24,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 08:10:24,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566991225] [2023-11-30 08:10:24,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:10:24,988 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 08:10:24,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:10:24,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 08:10:24,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 08:10:24,989 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 400 [2023-11-30 08:10:24,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 384 transitions, 1092 flow. Second operand has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:24,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:10:24,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 400 [2023-11-30 08:10:24,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:10:36,455 INFO L124 PetriNetUnfolderBase]: 17957/75909 cut-off events. [2023-11-30 08:10:36,455 INFO L125 PetriNetUnfolderBase]: For 40106/46879 co-relation queries the response was YES. [2023-11-30 08:10:37,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148038 conditions, 75909 events. 17957/75909 cut-off events. For 40106/46879 co-relation queries the response was YES. Maximal size of possible extension queue 1897. Compared 1145619 event pairs, 10341 based on Foata normal form. 61/68727 useless extension candidates. Maximal degree in co-relation 46427. Up to 22715 conditions per place. [2023-11-30 08:10:37,744 INFO L140 encePairwiseOnDemand]: 394/400 looper letters, 69 selfloop transitions, 8 changer transitions 0/391 dead transitions. [2023-11-30 08:10:37,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 391 transitions, 1288 flow [2023-11-30 08:10:37,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 08:10:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 08:10:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1652 transitions. [2023-11-30 08:10:37,753 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.826 [2023-11-30 08:10:37,753 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1652 transitions. [2023-11-30 08:10:37,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1652 transitions. [2023-11-30 08:10:37,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:10:37,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1652 transitions. [2023-11-30 08:10:37,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 330.4) internal successors, (1652), 5 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:37,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 400.0) internal successors, (2400), 6 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:37,760 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 400.0) internal successors, (2400), 6 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:37,761 INFO L307 CegarLoopForPetriNet]: 365 programPoint places, 6 predicate places. [2023-11-30 08:10:37,761 INFO L500 AbstractCegarLoop]: Abstraction has has 371 places, 391 transitions, 1288 flow [2023-11-30 08:10:37,761 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:37,761 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:10:37,761 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:10:37,761 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 08:10:37,762 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-30 08:10:37,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:10:37,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1640204992, now seen corresponding path program 1 times [2023-11-30 08:10:37,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:10:37,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041215319] [2023-11-30 08:10:37,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:10:37,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:10:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:10:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:10:37,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:10:37,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041215319] [2023-11-30 08:10:37,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041215319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 08:10:37,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402406698] [2023-11-30 08:10:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:10:37,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 08:10:37,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 08:10:37,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 08:10:37,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-30 08:10:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:10:37,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-30 08:10:37,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 08:10:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:10:37,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 08:10:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:10:38,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402406698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 08:10:38,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 08:10:38,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-30 08:10:38,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495012180] [2023-11-30 08:10:38,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 08:10:38,013 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-30 08:10:38,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:10:38,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-30 08:10:38,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-30 08:10:38,017 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 400 [2023-11-30 08:10:38,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 391 transitions, 1288 flow. Second operand has 10 states, 10 states have (on average 321.1) internal successors, (3211), 10 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:38,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:10:38,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 400 [2023-11-30 08:10:38,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:10:38,116 INFO L124 PetriNetUnfolderBase]: 104/477 cut-off events. [2023-11-30 08:10:38,116 INFO L125 PetriNetUnfolderBase]: For 513/1326 co-relation queries the response was YES. [2023-11-30 08:10:38,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 477 events. 104/477 cut-off events. For 513/1326 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2605 event pairs, 14 based on Foata normal form. 77/530 useless extension candidates. Maximal degree in co-relation 1304. Up to 179 conditions per place. [2023-11-30 08:10:38,118 INFO L140 encePairwiseOnDemand]: 395/400 looper letters, 41 selfloop transitions, 7 changer transitions 0/145 dead transitions. [2023-11-30 08:10:38,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 145 transitions, 684 flow [2023-11-30 08:10:38,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 08:10:38,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 08:10:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2906 transitions. [2023-11-30 08:10:38,123 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8072222222222222 [2023-11-30 08:10:38,123 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2906 transitions. [2023-11-30 08:10:38,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2906 transitions. [2023-11-30 08:10:38,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:10:38,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2906 transitions. [2023-11-30 08:10:38,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 322.8888888888889) internal successors, (2906), 9 states have internal predecessors, (2906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:38,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 400.0) internal successors, (4000), 10 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:38,133 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 400.0) internal successors, (4000), 10 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:38,135 INFO L307 CegarLoopForPetriNet]: 365 programPoint places, -224 predicate places. [2023-11-30 08:10:38,135 INFO L500 AbstractCegarLoop]: Abstraction has has 141 places, 145 transitions, 684 flow [2023-11-30 08:10:38,136 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 321.1) internal successors, (3211), 10 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:38,136 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:10:38,136 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:10:38,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-30 08:10:38,340 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-30 08:10:38,341 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-30 08:10:38,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:10:38,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2006923803, now seen corresponding path program 1 times [2023-11-30 08:10:38,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:10:38,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542101866] [2023-11-30 08:10:38,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:10:38,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:10:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 08:10:38,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 08:10:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 08:10:38,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 08:10:38,416 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 08:10:38,416 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-30 08:10:38,416 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-11-30 08:10:38,416 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-11-30 08:10:38,416 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-11-30 08:10:38,416 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-11-30 08:10:38,416 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-11-30 08:10:38,416 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-11-30 08:10:38,417 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-11-30 08:10:38,417 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-11-30 08:10:38,417 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-11-30 08:10:38,417 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-11-30 08:10:38,418 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-11-30 08:10:38,418 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2023-11-30 08:10:38,418 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2023-11-30 08:10:38,419 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-11-30 08:10:38,420 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-11-30 08:10:38,420 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-11-30 08:10:38,420 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-11-30 08:10:38,422 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-11-30 08:10:38,422 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-11-30 08:10:38,422 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-11-30 08:10:38,422 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-11-30 08:10:38,423 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 08:10:38,423 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-30 08:10:38,423 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 08:10:38,423 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-30 08:10:38,493 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-30 08:10:38,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 492 places, 543 transitions, 1158 flow [2023-11-30 08:10:39,413 INFO L124 PetriNetUnfolderBase]: 676/4361 cut-off events. [2023-11-30 08:10:39,413 INFO L125 PetriNetUnfolderBase]: For 419/462 co-relation queries the response was YES. [2023-11-30 08:10:39,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4797 conditions, 4361 events. 676/4361 cut-off events. For 419/462 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 36161 event pairs, 32 based on Foata normal form. 0/3533 useless extension candidates. Maximal degree in co-relation 2771. Up to 192 conditions per place. [2023-11-30 08:10:39,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 492 places, 543 transitions, 1158 flow [2023-11-30 08:10:39,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 492 places, 543 transitions, 1158 flow [2023-11-30 08:10:39,598 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 08:10:39,598 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d31beb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 08:10:39,598 INFO L363 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-30 08:10:39,601 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 08:10:39,601 INFO L124 PetriNetUnfolderBase]: 3/72 cut-off events. [2023-11-30 08:10:39,601 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 08:10:39,601 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:10:39,601 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:10:39,601 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-30 08:10:39,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:10:39,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1454328911, now seen corresponding path program 1 times [2023-11-30 08:10:39,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:10:39,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855208282] [2023-11-30 08:10:39,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:10:39,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:10:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:10:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:10:39,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:10:39,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855208282] [2023-11-30 08:10:39,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855208282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:10:39,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:10:39,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 08:10:39,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719294996] [2023-11-30 08:10:39,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:10:39,659 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 08:10:39,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:10:39,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 08:10:39,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 08:10:39,661 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 429 out of 543 [2023-11-30 08:10:39,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 543 transitions, 1158 flow. Second operand has 4 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 08:10:39,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:10:39,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 429 of 543 [2023-11-30 08:10:39,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand