/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-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 08:25:57,346 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 08:25:57,406 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-VariableLbe.epf [2023-08-27 08:25:57,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 08:25:57,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 08:25:57,438 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 08:25:57,439 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 08:25:57,439 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 08:25:57,440 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 08:25:57,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 08:25:57,443 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 08:25:57,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 08:25:57,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 08:25:57,444 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 08:25:57,444 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 08:25:57,444 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 08:25:57,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 08:25:57,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 08:25:57,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 08:25:57,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 08:25:57,445 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 08:25:57,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 08:25:57,446 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 08:25:57,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 08:25:57,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 08:25:57,446 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 08:25:57,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 08:25:57,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:25:57,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 08:25:57,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 08:25:57,448 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 08:25:57,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 08:25:57,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 08:25:57,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 08:25:57,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 08:25:57,449 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 08:25:57,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 08:25:57,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 08:25:57,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 08:25:57,748 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 08:25:57,748 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 08:25:57,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-27 08:25:58,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 08:25:58,794 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 08:25:58,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-27 08:25:58,800 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47e53df4/829be3ef5c9d45beae5c7bb74d3a7fbf/FLAGdf3b962be [2023-08-27 08:25:58,809 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47e53df4/829be3ef5c9d45beae5c7bb74d3a7fbf [2023-08-27 08:25:58,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 08:25:58,812 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 08:25:58,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 08:25:58,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 08:25:58,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 08:25:58,815 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:25:58" (1/1) ... [2023-08-27 08:25:58,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@207db03b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58, skipping insertion in model container [2023-08-27 08:25:58,815 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:25:58" (1/1) ... [2023-08-27 08:25:58,830 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 08:25:58,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:25:58,939 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 08:25:58,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:25:58,961 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 08:25:58,961 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 08:25:58,965 INFO L206 MainTranslator]: Completed translation [2023-08-27 08:25:58,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58 WrapperNode [2023-08-27 08:25:58,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 08:25:58,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 08:25:58,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 08:25:58,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 08:25:58,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58" (1/1) ... [2023-08-27 08:25:58,976 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58" (1/1) ... [2023-08-27 08:25:58,992 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 147 [2023-08-27 08:25:58,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 08:25:58,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 08:25:58,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 08:25:58,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 08:25:58,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58" (1/1) ... [2023-08-27 08:25:58,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58" (1/1) ... [2023-08-27 08:25:59,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58" (1/1) ... [2023-08-27 08:25:59,001 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58" (1/1) ... [2023-08-27 08:25:59,005 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58" (1/1) ... [2023-08-27 08:25:59,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58" (1/1) ... [2023-08-27 08:25:59,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58" (1/1) ... [2023-08-27 08:25:59,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58" (1/1) ... [2023-08-27 08:25:59,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 08:25:59,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 08:25:59,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 08:25:59,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 08:25:59,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58" (1/1) ... [2023-08-27 08:25:59,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:25:59,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:25:59,047 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) [2023-08-27 08:25:59,109 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 [2023-08-27 08:25:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 08:25:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 08:25:59,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 08:25:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 08:25:59,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 08:25:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 08:25:59,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 08:25:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 08:25:59,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 08:25:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 08:25:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 08:25:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 08:25:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 08:25:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 08:25:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 08:25:59,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 08:25:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 08:25:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 08:25:59,135 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 08:25:59,236 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 08:25:59,237 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 08:25:59,480 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 08:25:59,630 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 08:25:59,631 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 08:25:59,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:25:59 BoogieIcfgContainer [2023-08-27 08:25:59,648 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 08:25:59,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 08:25:59,650 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 08:25:59,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 08:25:59,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 08:25:58" (1/3) ... [2023-08-27 08:25:59,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66671023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:25:59, skipping insertion in model container [2023-08-27 08:25:59,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:25:58" (2/3) ... [2023-08-27 08:25:59,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66671023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:25:59, skipping insertion in model container [2023-08-27 08:25:59,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:25:59" (3/3) ... [2023-08-27 08:25:59,660 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-27 08:25:59,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 08:25:59,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-27 08:25:59,675 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 08:25:59,730 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 08:25:59,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 145 transitions, 322 flow [2023-08-27 08:25:59,825 INFO L124 PetriNetUnfolderBase]: 10/141 cut-off events. [2023-08-27 08:25:59,826 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 08:25:59,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 141 events. 10/141 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-27 08:25:59,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 145 transitions, 322 flow [2023-08-27 08:25:59,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 128 transitions, 280 flow [2023-08-27 08:25:59,843 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 08:25:59,863 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 128 transitions, 280 flow [2023-08-27 08:25:59,865 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 128 transitions, 280 flow [2023-08-27 08:25:59,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 128 transitions, 280 flow [2023-08-27 08:25:59,908 INFO L124 PetriNetUnfolderBase]: 10/128 cut-off events. [2023-08-27 08:25:59,908 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 08:25:59,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 128 events. 10/128 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 126 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-27 08:25:59,910 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-08-27 08:26:03,930 INFO L134 LiptonReduction]: Checked pairs total: 3394 [2023-08-27 08:26:03,930 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-27 08:26:03,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 08:26:03,945 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@30454874, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 08:26:03,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-27 08:26:03,947 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 08:26:03,947 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-08-27 08:26:03,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 08:26:03,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:26:03,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 08:26:03,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 08:26:03,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:26:03,950 INFO L85 PathProgramCache]: Analyzing trace with hash 643606, now seen corresponding path program 1 times [2023-08-27 08:26:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:26:03,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059654239] [2023-08-27 08:26:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:26:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:26:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:26:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:04,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:26:04,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059654239] [2023-08-27 08:26:04,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059654239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:26:04,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:26:04,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:26:04,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454755885] [2023-08-27 08:26:04,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:26:04,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:26:04,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:26:04,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:26:04,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:26:04,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 08:26:04,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:04,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:26:04,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 08:26:04,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:26:05,378 INFO L124 PetriNetUnfolderBase]: 14581/19046 cut-off events. [2023-08-27 08:26:05,378 INFO L125 PetriNetUnfolderBase]: For 928/928 co-relation queries the response was YES. [2023-08-27 08:26:05,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39192 conditions, 19046 events. 14581/19046 cut-off events. For 928/928 co-relation queries the response was YES. Maximal size of possible extension queue 1345. Compared 97779 event pairs, 4697 based on Foata normal form. 0/6038 useless extension candidates. Maximal degree in co-relation 33200. Up to 11519 conditions per place. [2023-08-27 08:26:05,554 INFO L140 encePairwiseOnDemand]: 252/258 looper letters, 72 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-27 08:26:05,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 341 flow [2023-08-27 08:26:05,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:26:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:26:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-08-27 08:26:05,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180878552971576 [2023-08-27 08:26:05,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-08-27 08:26:05,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-08-27 08:26:05,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:26:05,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-08-27 08:26:05,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:05,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:05,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:05,574 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 106 flow. Second operand 3 states and 401 transitions. [2023-08-27 08:26:05,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 341 flow [2023-08-27 08:26:05,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 74 transitions, 311 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 08:26:05,588 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 100 flow [2023-08-27 08:26:05,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-08-27 08:26:05,591 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -7 predicate places. [2023-08-27 08:26:05,592 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 100 flow [2023-08-27 08:26:05,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:05,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:26:05,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 08:26:05,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 08:26:05,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 08:26:05,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:26:05,593 INFO L85 PathProgramCache]: Analyzing trace with hash 643603, now seen corresponding path program 1 times [2023-08-27 08:26:05,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:26:05,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005573964] [2023-08-27 08:26:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:26:05,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:26:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:26:05,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:05,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:26:05,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005573964] [2023-08-27 08:26:05,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005573964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:26:05,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:26:05,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:26:05,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466902447] [2023-08-27 08:26:05,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:26:05,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:26:05,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:26:05,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:26:05,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:26:05,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-27 08:26:05,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:05,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:26:05,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-27 08:26:05,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:26:06,674 INFO L124 PetriNetUnfolderBase]: 14747/19253 cut-off events. [2023-08-27 08:26:06,674 INFO L125 PetriNetUnfolderBase]: For 1060/1060 co-relation queries the response was YES. [2023-08-27 08:26:06,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40758 conditions, 19253 events. 14747/19253 cut-off events. For 1060/1060 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 95624 event pairs, 6183 based on Foata normal form. 1/6938 useless extension candidates. Maximal degree in co-relation 15567. Up to 19047 conditions per place. [2023-08-27 08:26:06,734 INFO L140 encePairwiseOnDemand]: 240/258 looper letters, 54 selfloop transitions, 5 changer transitions 3/62 dead transitions. [2023-08-27 08:26:06,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 278 flow [2023-08-27 08:26:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:26:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:26:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2023-08-27 08:26:06,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142118863049095 [2023-08-27 08:26:06,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2023-08-27 08:26:06,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2023-08-27 08:26:06,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:26:06,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2023-08-27 08:26:06,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:06,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:06,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:06,742 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 100 flow. Second operand 3 states and 398 transitions. [2023-08-27 08:26:06,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 278 flow [2023-08-27 08:26:06,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:26:06,746 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 157 flow [2023-08-27 08:26:06,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-08-27 08:26:06,747 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-08-27 08:26:06,749 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 157 flow [2023-08-27 08:26:06,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:06,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:26:06,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 08:26:06,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 08:26:06,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 08:26:06,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:26:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash 19952358, now seen corresponding path program 1 times [2023-08-27 08:26:06,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:26:06,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733249270] [2023-08-27 08:26:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:26:06,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:26:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:26:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:06,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:26:06,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733249270] [2023-08-27 08:26:06,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733249270] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:26:06,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509456122] [2023-08-27 08:26:06,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:26:06,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:26:06,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:26:06,830 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) [2023-08-27 08:26:06,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 08:26:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:26:06,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:26:06,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:26:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:06,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 08:26:06,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509456122] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:26:06,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 08:26:06,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 08:26:06,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428290268] [2023-08-27 08:26:06,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:26:06,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:26:06,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:26:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:26:06,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:26:06,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 08:26:06,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:06,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:26:06,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 08:26:06,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:26:07,758 INFO L124 PetriNetUnfolderBase]: 13495/17629 cut-off events. [2023-08-27 08:26:07,759 INFO L125 PetriNetUnfolderBase]: For 2118/2118 co-relation queries the response was YES. [2023-08-27 08:26:07,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47980 conditions, 17629 events. 13495/17629 cut-off events. For 2118/2118 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 84616 event pairs, 7763 based on Foata normal form. 0/9415 useless extension candidates. Maximal degree in co-relation 20652. Up to 11129 conditions per place. [2023-08-27 08:26:07,853 INFO L140 encePairwiseOnDemand]: 255/258 looper letters, 74 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-08-27 08:26:07,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 77 transitions, 414 flow [2023-08-27 08:26:07,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 08:26:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 08:26:07,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 502 transitions. [2023-08-27 08:26:07,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48643410852713176 [2023-08-27 08:26:07,855 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 502 transitions. [2023-08-27 08:26:07,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 502 transitions. [2023-08-27 08:26:07,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:26:07,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 502 transitions. [2023-08-27 08:26:07,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:07,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:07,858 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:07,858 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 157 flow. Second operand 4 states and 502 transitions. [2023-08-27 08:26:07,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 77 transitions, 414 flow [2023-08-27 08:26:07,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:26:07,861 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 154 flow [2023-08-27 08:26:07,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-27 08:26:07,861 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-08-27 08:26:07,861 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 154 flow [2023-08-27 08:26:07,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:07,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:26:07,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 08:26:07,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 08:26:08,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:26:08,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 08:26:08,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:26:08,067 INFO L85 PathProgramCache]: Analyzing trace with hash 19952359, now seen corresponding path program 1 times [2023-08-27 08:26:08,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:26:08,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38779985] [2023-08-27 08:26:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:26:08,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:26:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:26:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:08,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:26:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38779985] [2023-08-27 08:26:08,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38779985] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:26:08,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292139004] [2023-08-27 08:26:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:26:08,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:26:08,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:26:08,247 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) [2023-08-27 08:26:08,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 08:26:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:26:08,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:26:08,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:26:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:08,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:26:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:08,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292139004] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:26:08,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:26:08,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 08:26:08,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506059157] [2023-08-27 08:26:08,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:26:08,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:26:08,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:26:08,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:26:08,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:26:08,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 08:26:08,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:08,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:26:08,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 08:26:08,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:26:10,300 INFO L124 PetriNetUnfolderBase]: 31609/41323 cut-off events. [2023-08-27 08:26:10,301 INFO L125 PetriNetUnfolderBase]: For 4935/4935 co-relation queries the response was YES. [2023-08-27 08:26:10,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111944 conditions, 41323 events. 31609/41323 cut-off events. For 4935/4935 co-relation queries the response was YES. Maximal size of possible extension queue 2067. Compared 227549 event pairs, 7121 based on Foata normal form. 0/22363 useless extension candidates. Maximal degree in co-relation 25840. Up to 25904 conditions per place. [2023-08-27 08:26:10,465 INFO L140 encePairwiseOnDemand]: 255/258 looper letters, 176 selfloop transitions, 6 changer transitions 0/182 dead transitions. [2023-08-27 08:26:10,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 182 transitions, 958 flow [2023-08-27 08:26:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:26:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:26:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 823 transitions. [2023-08-27 08:26:10,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5316537467700259 [2023-08-27 08:26:10,467 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 823 transitions. [2023-08-27 08:26:10,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 823 transitions. [2023-08-27 08:26:10,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:26:10,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 823 transitions. [2023-08-27 08:26:10,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:10,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 258.0) internal successors, (1806), 7 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:10,471 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 258.0) internal successors, (1806), 7 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:10,471 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 154 flow. Second operand 6 states and 823 transitions. [2023-08-27 08:26:10,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 182 transitions, 958 flow [2023-08-27 08:26:10,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 182 transitions, 954 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 08:26:10,479 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 189 flow [2023-08-27 08:26:10,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-08-27 08:26:10,480 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-27 08:26:10,480 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 189 flow [2023-08-27 08:26:10,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:10,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:26:10,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 08:26:10,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 08:26:10,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-27 08:26:10,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 08:26:10,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:26:10,686 INFO L85 PathProgramCache]: Analyzing trace with hash 19952356, now seen corresponding path program 1 times [2023-08-27 08:26:10,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:26:10,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363999684] [2023-08-27 08:26:10,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:26:10,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:26:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:26:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:10,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:26:10,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363999684] [2023-08-27 08:26:10,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363999684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:26:10,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:26:10,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 08:26:10,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321565341] [2023-08-27 08:26:10,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:26:10,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:26:10,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:26:10,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:26:10,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:26:10,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-27 08:26:10,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:10,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:26:10,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-27 08:26:10,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:26:12,157 INFO L124 PetriNetUnfolderBase]: 21241/27847 cut-off events. [2023-08-27 08:26:12,157 INFO L125 PetriNetUnfolderBase]: For 14284/14284 co-relation queries the response was YES. [2023-08-27 08:26:12,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78283 conditions, 27847 events. 21241/27847 cut-off events. For 14284/14284 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 137824 event pairs, 16543 based on Foata normal form. 0/16957 useless extension candidates. Maximal degree in co-relation 62741. Up to 27847 conditions per place. [2023-08-27 08:26:12,329 INFO L140 encePairwiseOnDemand]: 255/258 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-27 08:26:12,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 269 flow [2023-08-27 08:26:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:26:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:26:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-27 08:26:12,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46770025839793283 [2023-08-27 08:26:12,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-27 08:26:12,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-27 08:26:12,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:26:12,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-27 08:26:12,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:12,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:12,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:12,334 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 189 flow. Second operand 3 states and 362 transitions. [2023-08-27 08:26:12,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 269 flow [2023-08-27 08:26:12,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 260 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 08:26:12,341 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 174 flow [2023-08-27 08:26:12,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-27 08:26:12,343 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-27 08:26:12,343 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 174 flow [2023-08-27 08:26:12,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:12,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:26:12,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 08:26:12,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 08:26:12,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 08:26:12,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:26:12,348 INFO L85 PathProgramCache]: Analyzing trace with hash 19952357, now seen corresponding path program 1 times [2023-08-27 08:26:12,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:26:12,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938171142] [2023-08-27 08:26:12,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:26:12,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:26:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:26:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:12,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:26:12,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938171142] [2023-08-27 08:26:12,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938171142] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:26:12,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610829420] [2023-08-27 08:26:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:26:12,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:26:12,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:26:12,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:26:12,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 08:26:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:26:12,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:26:12,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:26:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:12,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:26:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:12,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610829420] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:26:12,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:26:12,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 08:26:12,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715902382] [2023-08-27 08:26:12,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:26:12,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:26:12,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:26:12,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:26:12,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:26:12,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-27 08:26:12,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 109.57142857142857) internal successors, (767), 7 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:12,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:26:12,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-27 08:26:12,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:26:15,870 INFO L124 PetriNetUnfolderBase]: 51043/68220 cut-off events. [2023-08-27 08:26:15,871 INFO L125 PetriNetUnfolderBase]: For 24808/24808 co-relation queries the response was YES. [2023-08-27 08:26:15,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187545 conditions, 68220 events. 51043/68220 cut-off events. For 24808/24808 co-relation queries the response was YES. Maximal size of possible extension queue 2971. Compared 414760 event pairs, 7649 based on Foata normal form. 4491/49699 useless extension candidates. Maximal degree in co-relation 187531. Up to 35227 conditions per place. [2023-08-27 08:26:16,161 INFO L140 encePairwiseOnDemand]: 241/258 looper letters, 119 selfloop transitions, 53 changer transitions 1/173 dead transitions. [2023-08-27 08:26:16,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 173 transitions, 992 flow [2023-08-27 08:26:16,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:26:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:26:16,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 820 transitions. [2023-08-27 08:26:16,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297157622739018 [2023-08-27 08:26:16,163 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 820 transitions. [2023-08-27 08:26:16,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 820 transitions. [2023-08-27 08:26:16,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:26:16,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 820 transitions. [2023-08-27 08:26:16,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:16,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 258.0) internal successors, (1806), 7 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:16,167 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 258.0) internal successors, (1806), 7 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:16,167 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 174 flow. Second operand 6 states and 820 transitions. [2023-08-27 08:26:16,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 173 transitions, 992 flow [2023-08-27 08:26:16,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 173 transitions, 991 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:26:16,203 INFO L231 Difference]: Finished difference. Result has 59 places, 92 transitions, 727 flow [2023-08-27 08:26:16,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=727, PETRI_PLACES=59, PETRI_TRANSITIONS=92} [2023-08-27 08:26:16,203 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-08-27 08:26:16,203 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 92 transitions, 727 flow [2023-08-27 08:26:16,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.57142857142857) internal successors, (767), 7 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:16,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:26:16,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 08:26:16,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 08:26:16,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:26:16,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 08:26:16,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:26:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1996355444, now seen corresponding path program 1 times [2023-08-27 08:26:16,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:26:16,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129619100] [2023-08-27 08:26:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:26:16,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:26:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:26:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:16,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:26:16,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129619100] [2023-08-27 08:26:16,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129619100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:26:16,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:26:16,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:26:16,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472542599] [2023-08-27 08:26:16,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:26:16,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:26:16,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:26:16,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:26:16,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:26:16,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 08:26:16,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 92 transitions, 727 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:16,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:26:16,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 08:26:16,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:26:22,465 INFO L124 PetriNetUnfolderBase]: 78213/104525 cut-off events. [2023-08-27 08:26:22,465 INFO L125 PetriNetUnfolderBase]: For 128624/128624 co-relation queries the response was YES. [2023-08-27 08:26:22,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429354 conditions, 104525 events. 78213/104525 cut-off events. For 128624/128624 co-relation queries the response was YES. Maximal size of possible extension queue 4500. Compared 665616 event pairs, 20641 based on Foata normal form. 0/77829 useless extension candidates. Maximal degree in co-relation 429335. Up to 70658 conditions per place. [2023-08-27 08:26:23,005 INFO L140 encePairwiseOnDemand]: 254/258 looper letters, 166 selfloop transitions, 4 changer transitions 0/170 dead transitions. [2023-08-27 08:26:23,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 170 transitions, 1686 flow [2023-08-27 08:26:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:26:23,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:26:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-08-27 08:26:23,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025839793281653 [2023-08-27 08:26:23,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-08-27 08:26:23,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-08-27 08:26:23,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:26:23,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-08-27 08:26:23,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:23,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:23,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:23,011 INFO L175 Difference]: Start difference. First operand has 59 places, 92 transitions, 727 flow. Second operand 3 states and 389 transitions. [2023-08-27 08:26:23,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 170 transitions, 1686 flow [2023-08-27 08:26:24,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 170 transitions, 1686 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 08:26:24,391 INFO L231 Difference]: Finished difference. Result has 62 places, 95 transitions, 783 flow [2023-08-27 08:26:24,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=783, PETRI_PLACES=62, PETRI_TRANSITIONS=95} [2023-08-27 08:26:24,392 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 12 predicate places. [2023-08-27 08:26:24,392 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 95 transitions, 783 flow [2023-08-27 08:26:24,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:24,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:26:24,392 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 08:26:24,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 08:26:24,392 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 08:26:24,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:26:24,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1695809110, now seen corresponding path program 2 times [2023-08-27 08:26:24,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:26:24,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990957531] [2023-08-27 08:26:24,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:26:24,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:26:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:26:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:24,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:26:24,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990957531] [2023-08-27 08:26:24,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990957531] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:26:24,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255970618] [2023-08-27 08:26:24,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:26:24,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:26:24,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:26:24,440 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:26:24,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 08:26:24,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 08:26:24,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:26:24,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 08:26:24,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:26:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 08:26:24,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 08:26:24,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255970618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:26:24,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 08:26:24,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 08:26:24,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483187551] [2023-08-27 08:26:24,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:26:24,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:26:24,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:26:24,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:26:24,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 08:26:24,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 258 [2023-08-27 08:26:24,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 95 transitions, 783 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:24,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:26:24,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 258 [2023-08-27 08:26:24,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:26:29,749 INFO L124 PetriNetUnfolderBase]: 73705/98591 cut-off events. [2023-08-27 08:26:29,749 INFO L125 PetriNetUnfolderBase]: For 175023/175023 co-relation queries the response was YES. [2023-08-27 08:26:30,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414298 conditions, 98591 events. 73705/98591 cut-off events. For 175023/175023 co-relation queries the response was YES. Maximal size of possible extension queue 4311. Compared 610292 event pairs, 47991 based on Foata normal form. 1426/74785 useless extension candidates. Maximal degree in co-relation 414276. Up to 98591 conditions per place. [2023-08-27 08:26:30,441 INFO L140 encePairwiseOnDemand]: 256/258 looper letters, 89 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-08-27 08:26:30,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 896 flow [2023-08-27 08:26:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:26:30,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:26:30,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-27 08:26:30,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2023-08-27 08:26:30,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-27 08:26:30,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-27 08:26:30,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:26:30,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-27 08:26:30,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:30,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:30,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:30,444 INFO L175 Difference]: Start difference. First operand has 62 places, 95 transitions, 783 flow. Second operand 3 states and 351 transitions. [2023-08-27 08:26:30,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 896 flow [2023-08-27 08:26:31,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 90 transitions, 844 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-27 08:26:31,360 INFO L231 Difference]: Finished difference. Result has 58 places, 90 transitions, 666 flow [2023-08-27 08:26:31,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=666, PETRI_PLACES=58, PETRI_TRANSITIONS=90} [2023-08-27 08:26:31,360 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2023-08-27 08:26:31,360 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 90 transitions, 666 flow [2023-08-27 08:26:31,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:31,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:26:31,361 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 08:26:31,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 08:26:31,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:26:31,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 08:26:31,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:26:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1695809108, now seen corresponding path program 2 times [2023-08-27 08:26:31,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:26:31,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597447650] [2023-08-27 08:26:31,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:26:31,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:26:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:26:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:31,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:26:31,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597447650] [2023-08-27 08:26:31,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597447650] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:26:31,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594461745] [2023-08-27 08:26:31,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:26:31,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:26:31,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:26:31,633 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:26:31,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 08:26:31,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 08:26:31,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:26:31,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 08:26:31,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:26:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:31,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:26:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:31,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594461745] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:26:31,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:26:31,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 08:26:31,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147691859] [2023-08-27 08:26:31,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:26:31,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 08:26:31,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:26:31,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 08:26:31,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 08:26:31,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-27 08:26:31,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 90 transitions, 666 flow. Second operand has 13 states, 13 states have (on average 109.3076923076923) internal successors, (1421), 13 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:31,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:26:31,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-27 08:26:31,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:26:51,293 INFO L124 PetriNetUnfolderBase]: 225857/302683 cut-off events. [2023-08-27 08:26:51,293 INFO L125 PetriNetUnfolderBase]: For 727180/727180 co-relation queries the response was YES. [2023-08-27 08:26:51,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186997 conditions, 302683 events. 225857/302683 cut-off events. For 727180/727180 co-relation queries the response was YES. Maximal size of possible extension queue 9602. Compared 2109855 event pairs, 21031 based on Foata normal form. 43720/262819 useless extension candidates. Maximal degree in co-relation 1186978. Up to 147597 conditions per place. [2023-08-27 08:26:53,108 INFO L140 encePairwiseOnDemand]: 242/258 looper letters, 234 selfloop transitions, 233 changer transitions 1/468 dead transitions. [2023-08-27 08:26:53,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 468 transitions, 3678 flow [2023-08-27 08:26:53,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 08:26:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 08:26:53,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1661 transitions. [2023-08-27 08:26:53,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536498708010336 [2023-08-27 08:26:53,113 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1661 transitions. [2023-08-27 08:26:53,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1661 transitions. [2023-08-27 08:26:53,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:26:53,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1661 transitions. [2023-08-27 08:26:53,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 138.41666666666666) internal successors, (1661), 12 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:53,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 258.0) internal successors, (3354), 13 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:53,143 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 258.0) internal successors, (3354), 13 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:53,143 INFO L175 Difference]: Start difference. First operand has 58 places, 90 transitions, 666 flow. Second operand 12 states and 1661 transitions. [2023-08-27 08:26:53,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 468 transitions, 3678 flow [2023-08-27 08:26:54,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 468 transitions, 3677 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:26:54,618 INFO L231 Difference]: Finished difference. Result has 78 places, 279 transitions, 3306 flow [2023-08-27 08:26:54,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3306, PETRI_PLACES=78, PETRI_TRANSITIONS=279} [2023-08-27 08:26:54,619 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2023-08-27 08:26:54,619 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 279 transitions, 3306 flow [2023-08-27 08:26:54,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 109.3076923076923) internal successors, (1421), 13 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:54,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:26:54,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:26:54,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 08:26:54,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:26:54,820 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 08:26:54,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:26:54,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1757535646, now seen corresponding path program 1 times [2023-08-27 08:26:54,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:26:54,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800808818] [2023-08-27 08:26:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:26:54,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:26:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:26:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:26:54,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:26:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800808818] [2023-08-27 08:26:54,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800808818] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:26:54,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:26:54,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:26:54,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865293755] [2023-08-27 08:26:54,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:26:54,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:26:54,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:26:54,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:26:54,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:26:54,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 08:26:54,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 279 transitions, 3306 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:26:54,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:26:54,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 08:26:54,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:27:22,565 INFO L124 PetriNetUnfolderBase]: 258373/346617 cut-off events. [2023-08-27 08:27:22,565 INFO L125 PetriNetUnfolderBase]: For 981383/981383 co-relation queries the response was YES. [2023-08-27 08:27:23,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1775093 conditions, 346617 events. 258373/346617 cut-off events. For 981383/981383 co-relation queries the response was YES. Maximal size of possible extension queue 10992. Compared 2467005 event pairs, 39399 based on Foata normal form. 0/256521 useless extension candidates. Maximal degree in co-relation 1775063. Up to 305391 conditions per place. [2023-08-27 08:27:25,163 INFO L140 encePairwiseOnDemand]: 254/258 looper letters, 426 selfloop transitions, 21 changer transitions 0/447 dead transitions. [2023-08-27 08:27:25,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 447 transitions, 6322 flow [2023-08-27 08:27:25,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:27:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:27:25,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-08-27 08:27:25,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4974160206718346 [2023-08-27 08:27:25,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-08-27 08:27:25,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-08-27 08:27:25,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:27:25,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-08-27 08:27:25,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:27:25,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:27:25,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:27:25,166 INFO L175 Difference]: Start difference. First operand has 78 places, 279 transitions, 3306 flow. Second operand 3 states and 385 transitions. [2023-08-27 08:27:25,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 447 transitions, 6322 flow [2023-08-27 08:28:01,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 447 transitions, 5790 flow, removed 266 selfloop flow, removed 0 redundant places. [2023-08-27 08:28:01,380 INFO L231 Difference]: Finished difference. Result has 81 places, 296 transitions, 3337 flow [2023-08-27 08:28:01,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3337, PETRI_PLACES=81, PETRI_TRANSITIONS=296} [2023-08-27 08:28:01,381 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2023-08-27 08:28:01,381 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 296 transitions, 3337 flow [2023-08-27 08:28:01,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:28:01,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:28:01,381 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-27 08:28:01,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 08:28:01,381 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 08:28:01,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:28:01,382 INFO L85 PathProgramCache]: Analyzing trace with hash -469326137, now seen corresponding path program 1 times [2023-08-27 08:28:01,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:28:01,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235120929] [2023-08-27 08:28:01,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:28:01,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:28:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:28:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:28:01,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:28:01,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235120929] [2023-08-27 08:28:01,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235120929] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:28:01,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125036475] [2023-08-27 08:28:01,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:28:01,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:28:01,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:28:01,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:28:01,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 08:28:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:28:01,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:28:01,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:28:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:28:01,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 08:28:01,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125036475] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:28:01,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 08:28:01,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 08:28:01,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954080510] [2023-08-27 08:28:01,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:28:01,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:28:01,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:28:01,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:28:01,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:28:01,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 08:28:01,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 296 transitions, 3337 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:28:01,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:28:01,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 08:28:01,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand