/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 -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/goblint-regression/28-race_reach_28-funptr_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:39:58,379 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:39:58,429 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 [2023-08-26 22:39:58,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:39:58,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:39:58,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:39:58,455 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:39:58,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:39:58,456 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:39:58,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:39:58,457 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:39:58,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:39:58,458 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:39:58,458 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:39:58,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:39:58,459 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:39:58,459 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:39:58,460 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:39:58,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:39:58,460 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:39:58,461 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:39:58,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:39:58,461 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:39:58,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:39:58,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:39:58,462 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:39:58,462 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:39:58,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:39:58,463 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:39:58,463 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:39:58,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:39:58,464 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:39:58,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:39:58,464 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:39:58,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:39:58,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:39:58,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:39:58,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:39:58,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:39:58,799 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:39:58,800 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:39:58,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-08-26 22:39:59,878 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:40:00,131 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:40:00,132 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-08-26 22:40:00,150 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39299cb7d/e215383a475a4b7b9b18e23c011176d0/FLAG0209c3fe7 [2023-08-26 22:40:00,163 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39299cb7d/e215383a475a4b7b9b18e23c011176d0 [2023-08-26 22:40:00,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:40:00,166 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:40:00,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:40:00,167 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:40:00,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:40:00,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:40:00" (1/1) ... [2023-08-26 22:40:00,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64005e92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00, skipping insertion in model container [2023-08-26 22:40:00,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:40:00" (1/1) ... [2023-08-26 22:40:00,217 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:40:00,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:40:00,676 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:40:00,703 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:40:00,705 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:40:00,711 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 22:40:00,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:40:00,815 WARN L669 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 22:40:00,821 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:40:00,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00 WrapperNode [2023-08-26 22:40:00,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:40:00,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:40:00,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:40:00,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:40:00,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00" (1/1) ... [2023-08-26 22:40:00,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00" (1/1) ... [2023-08-26 22:40:00,889 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 135 [2023-08-26 22:40:00,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:40:00,890 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:40:00,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:40:00,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:40:00,897 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00" (1/1) ... [2023-08-26 22:40:00,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00" (1/1) ... [2023-08-26 22:40:00,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00" (1/1) ... [2023-08-26 22:40:00,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00" (1/1) ... [2023-08-26 22:40:00,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00" (1/1) ... [2023-08-26 22:40:00,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00" (1/1) ... [2023-08-26 22:40:00,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00" (1/1) ... [2023-08-26 22:40:00,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00" (1/1) ... [2023-08-26 22:40:00,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:40:00,914 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:40:00,914 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:40:00,914 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:40:00,915 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00" (1/1) ... [2023-08-26 22:40:00,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:40:00,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:40:00,962 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) [2023-08-26 22:40:00,991 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 [2023-08-26 22:40:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:40:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:40:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:40:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:40:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:40:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:40:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:40:01,006 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:40:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:40:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:40:01,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:40:01,008 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:40:01,161 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:40:01,163 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:40:01,381 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:40:01,388 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:40:01,388 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 22:40:01,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:40:01 BoogieIcfgContainer [2023-08-26 22:40:01,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:40:01,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:40:01,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:40:01,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:40:01,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:40:00" (1/3) ... [2023-08-26 22:40:01,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e64315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:40:01, skipping insertion in model container [2023-08-26 22:40:01,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:40:00" (2/3) ... [2023-08-26 22:40:01,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e64315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:40:01, skipping insertion in model container [2023-08-26 22:40:01,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:40:01" (3/3) ... [2023-08-26 22:40:01,398 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2023-08-26 22:40:01,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:40:01,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-26 22:40:01,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:40:01,487 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:40:01,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 141 transitions, 290 flow [2023-08-26 22:40:01,576 INFO L124 PetriNetUnfolderBase]: 19/184 cut-off events. [2023-08-26 22:40:01,577 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:40:01,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 184 events. 19/184 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 451 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 96. Up to 4 conditions per place. [2023-08-26 22:40:01,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 141 transitions, 290 flow [2023-08-26 22:40:01,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 138 transitions, 284 flow [2023-08-26 22:40:01,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:40:01,599 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 138 transitions, 284 flow [2023-08-26 22:40:01,601 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 138 transitions, 284 flow [2023-08-26 22:40:01,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 138 transitions, 284 flow [2023-08-26 22:40:01,639 INFO L124 PetriNetUnfolderBase]: 18/181 cut-off events. [2023-08-26 22:40:01,640 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:40:01,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 181 events. 18/181 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 449 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 96. Up to 4 conditions per place. [2023-08-26 22:40:01,644 INFO L119 LiptonReduction]: Number of co-enabled transitions 4664 [2023-08-26 22:40:04,934 INFO L134 LiptonReduction]: Checked pairs total: 8642 [2023-08-26 22:40:04,934 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-26 22:40:04,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:40:04,952 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;@4cd6fcd4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:40:04,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-26 22:40:04,954 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:40:04,955 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 22:40:04,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:40:04,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:04,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:40:04,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:40:04,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:04,960 INFO L85 PathProgramCache]: Analyzing trace with hash 16676143, now seen corresponding path program 1 times [2023-08-26 22:40:04,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:04,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998942966] [2023-08-26 22:40:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:04,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:05,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:05,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998942966] [2023-08-26 22:40:05,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998942966] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:05,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:05,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:40:05,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075646056] [2023-08-26 22:40:05,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:05,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:40:05,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:05,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:40:05,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:40:05,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 268 [2023-08-26 22:40:05,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:05,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:05,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 268 [2023-08-26 22:40:05,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:05,430 INFO L124 PetriNetUnfolderBase]: 130/334 cut-off events. [2023-08-26 22:40:05,430 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:40:05,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 334 events. 130/334 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1670 event pairs, 0 based on Foata normal form. 11/272 useless extension candidates. Maximal degree in co-relation 597. Up to 274 conditions per place. [2023-08-26 22:40:05,434 INFO L140 encePairwiseOnDemand]: 254/268 looper letters, 40 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-26 22:40:05,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 188 flow [2023-08-26 22:40:05,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:40:05,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:40:05,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2023-08-26 22:40:05,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149253731343284 [2023-08-26 22:40:05,448 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2023-08-26 22:40:05,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2023-08-26 22:40:05,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:05,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2023-08-26 22:40:05,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:05,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:05,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:05,462 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 98 flow. Second operand 3 states and 414 transitions. [2023-08-26 22:40:05,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 188 flow [2023-08-26 22:40:05,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:40:05,467 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 84 flow [2023-08-26 22:40:05,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-08-26 22:40:05,471 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-08-26 22:40:05,472 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 84 flow [2023-08-26 22:40:05,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:05,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:05,472 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:40:05,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:40:05,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:40:05,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:05,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1154039298, now seen corresponding path program 1 times [2023-08-26 22:40:05,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:05,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791200619] [2023-08-26 22:40:05,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:05,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:40:05,499 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:40:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:40:05,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:40:05,534 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:40:05,536 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2023-08-26 22:40:05,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-26 22:40:05,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-26 22:40:05,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-26 22:40:05,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (9 of 14 remaining) [2023-08-26 22:40:05,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-08-26 22:40:05,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-08-26 22:40:05,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-08-26 22:40:05,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-08-26 22:40:05,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-08-26 22:40:05,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-26 22:40:05,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-26 22:40:05,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-26 22:40:05,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-26 22:40:05,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:40:05,541 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 22:40:05,543 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:40:05,543 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:40:05,567 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:40:05,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 187 transitions, 392 flow [2023-08-26 22:40:05,610 INFO L124 PetriNetUnfolderBase]: 34/310 cut-off events. [2023-08-26 22:40:05,610 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:40:05,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 310 events. 34/310 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 958 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-26 22:40:05,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 187 transitions, 392 flow [2023-08-26 22:40:05,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 187 transitions, 392 flow [2023-08-26 22:40:05,617 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:40:05,617 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 187 transitions, 392 flow [2023-08-26 22:40:05,617 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 187 transitions, 392 flow [2023-08-26 22:40:05,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 187 transitions, 392 flow [2023-08-26 22:40:05,653 INFO L124 PetriNetUnfolderBase]: 34/310 cut-off events. [2023-08-26 22:40:05,653 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:40:05,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 310 events. 34/310 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 958 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-26 22:40:05,665 INFO L119 LiptonReduction]: Number of co-enabled transitions 14872 [2023-08-26 22:40:09,070 INFO L134 LiptonReduction]: Checked pairs total: 38430 [2023-08-26 22:40:09,070 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-08-26 22:40:09,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:40:09,083 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;@4cd6fcd4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:40:09,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-26 22:40:09,086 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:40:09,087 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 22:40:09,087 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:40:09,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:09,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:40:09,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:40:09,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:09,094 INFO L85 PathProgramCache]: Analyzing trace with hash 880522340, now seen corresponding path program 1 times [2023-08-26 22:40:09,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:09,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046340179] [2023-08-26 22:40:09,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:09,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:09,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:09,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046340179] [2023-08-26 22:40:09,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046340179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:09,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:09,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:40:09,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647074410] [2023-08-26 22:40:09,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:09,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:40:09,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:09,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:40:09,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:40:09,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 335 [2023-08-26 22:40:09,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 80 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:09,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:09,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 335 [2023-08-26 22:40:09,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:10,348 INFO L124 PetriNetUnfolderBase]: 8726/13981 cut-off events. [2023-08-26 22:40:10,349 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-08-26 22:40:10,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27813 conditions, 13981 events. 8726/13981 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 92268 event pairs, 4148 based on Foata normal form. 870/10600 useless extension candidates. Maximal degree in co-relation 2673. Up to 13686 conditions per place. [2023-08-26 22:40:10,435 INFO L140 encePairwiseOnDemand]: 314/335 looper letters, 71 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-26 22:40:10,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 326 flow [2023-08-26 22:40:10,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:40:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:40:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-26 22:40:10,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56318407960199 [2023-08-26 22:40:10,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-26 22:40:10,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-26 22:40:10,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:10,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-26 22:40:10,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:10,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:10,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:10,448 INFO L175 Difference]: Start difference. First operand has 67 places, 80 transitions, 178 flow. Second operand 3 states and 566 transitions. [2023-08-26 22:40:10,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 326 flow [2023-08-26 22:40:10,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 81 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:40:10,453 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 160 flow [2023-08-26 22:40:10,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-08-26 22:40:10,454 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2023-08-26 22:40:10,454 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 160 flow [2023-08-26 22:40:10,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:10,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:10,455 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:40:10,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:40:10,455 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:40:10,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:10,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1893959830, now seen corresponding path program 1 times [2023-08-26 22:40:10,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:10,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236906266] [2023-08-26 22:40:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:10,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:10,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:10,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236906266] [2023-08-26 22:40:10,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236906266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:10,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:10,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:40:10,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23462325] [2023-08-26 22:40:10,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:10,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:40:10,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:10,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:40:10,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:40:10,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 335 [2023-08-26 22:40:10,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:10,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:10,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 335 [2023-08-26 22:40:10,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:11,500 INFO L124 PetriNetUnfolderBase]: 8149/13578 cut-off events. [2023-08-26 22:40:11,501 INFO L125 PetriNetUnfolderBase]: For 731/731 co-relation queries the response was YES. [2023-08-26 22:40:11,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27473 conditions, 13578 events. 8149/13578 cut-off events. For 731/731 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 95384 event pairs, 2051 based on Foata normal form. 0/10156 useless extension candidates. Maximal degree in co-relation 27355. Up to 9494 conditions per place. [2023-08-26 22:40:11,587 INFO L140 encePairwiseOnDemand]: 332/335 looper letters, 86 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-08-26 22:40:11,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 398 flow [2023-08-26 22:40:11,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:40:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:40:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2023-08-26 22:40:11,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532338308457712 [2023-08-26 22:40:11,590 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2023-08-26 22:40:11,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2023-08-26 22:40:11,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:11,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2023-08-26 22:40:11,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:11,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:11,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:11,594 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 160 flow. Second operand 3 states and 556 transitions. [2023-08-26 22:40:11,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 398 flow [2023-08-26 22:40:11,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:40:11,600 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 158 flow [2023-08-26 22:40:11,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-08-26 22:40:11,603 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2023-08-26 22:40:11,603 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 158 flow [2023-08-26 22:40:11,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:11,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:11,604 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:40:11,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:40:11,604 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:40:11,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:11,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1893959854, now seen corresponding path program 1 times [2023-08-26 22:40:11,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:11,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932833099] [2023-08-26 22:40:11,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:11,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:40:11,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:11,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932833099] [2023-08-26 22:40:11,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932833099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:11,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:11,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:40:11,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278587841] [2023-08-26 22:40:11,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:11,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:40:11,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:11,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:40:11,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:40:11,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 335 [2023-08-26 22:40:11,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:11,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:11,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 335 [2023-08-26 22:40:11,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:12,607 INFO L124 PetriNetUnfolderBase]: 7572/12663 cut-off events. [2023-08-26 22:40:12,607 INFO L125 PetriNetUnfolderBase]: For 413/413 co-relation queries the response was YES. [2023-08-26 22:40:12,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25676 conditions, 12663 events. 7572/12663 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 87409 event pairs, 881 based on Foata normal form. 0/9691 useless extension candidates. Maximal degree in co-relation 20061. Up to 10410 conditions per place. [2023-08-26 22:40:12,679 INFO L140 encePairwiseOnDemand]: 331/335 looper letters, 84 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-26 22:40:12,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 398 flow [2023-08-26 22:40:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:40:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:40:12,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2023-08-26 22:40:12,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532338308457712 [2023-08-26 22:40:12,682 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2023-08-26 22:40:12,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2023-08-26 22:40:12,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:12,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2023-08-26 22:40:12,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:12,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:12,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:12,686 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 158 flow. Second operand 3 states and 556 transitions. [2023-08-26 22:40:12,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 398 flow [2023-08-26 22:40:12,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 96 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:40:12,724 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 166 flow [2023-08-26 22:40:12,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-08-26 22:40:12,726 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2023-08-26 22:40:12,726 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 166 flow [2023-08-26 22:40:12,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:12,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:12,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:40:12,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:40:12,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:40:12,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:12,727 INFO L85 PathProgramCache]: Analyzing trace with hash -319838557, now seen corresponding path program 1 times [2023-08-26 22:40:12,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:12,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428564125] [2023-08-26 22:40:12,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:12,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:12,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:12,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428564125] [2023-08-26 22:40:12,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428564125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:12,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:12,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:40:12,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464266932] [2023-08-26 22:40:12,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:12,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:40:12,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:12,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:40:12,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:40:12,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 335 [2023-08-26 22:40:12,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:12,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:12,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 335 [2023-08-26 22:40:12,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:13,569 INFO L124 PetriNetUnfolderBase]: 7008/11209 cut-off events. [2023-08-26 22:40:13,569 INFO L125 PetriNetUnfolderBase]: For 2564/2564 co-relation queries the response was YES. [2023-08-26 22:40:13,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23952 conditions, 11209 events. 7008/11209 cut-off events. For 2564/2564 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 68034 event pairs, 2870 based on Foata normal form. 0/8804 useless extension candidates. Maximal degree in co-relation 19058. Up to 9538 conditions per place. [2023-08-26 22:40:13,615 INFO L140 encePairwiseOnDemand]: 326/335 looper letters, 79 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2023-08-26 22:40:13,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 402 flow [2023-08-26 22:40:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:40:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:40:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-08-26 22:40:13,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442786069651742 [2023-08-26 22:40:13,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-08-26 22:40:13,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-08-26 22:40:13,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:13,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-08-26 22:40:13,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:13,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:13,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:13,622 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 166 flow. Second operand 3 states and 547 transitions. [2023-08-26 22:40:13,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 402 flow [2023-08-26 22:40:13,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 89 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:40:13,625 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 191 flow [2023-08-26 22:40:13,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2023-08-26 22:40:13,626 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 4 predicate places. [2023-08-26 22:40:13,626 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 191 flow [2023-08-26 22:40:13,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:13,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:13,627 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:40:13,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:40:13,627 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:40:13,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:13,627 INFO L85 PathProgramCache]: Analyzing trace with hash -970669203, now seen corresponding path program 1 times [2023-08-26 22:40:13,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:13,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299965897] [2023-08-26 22:40:13,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:13,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:40:13,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:40:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:40:13,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:40:13,654 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:40:13,654 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-26 22:40:13,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-26 22:40:13,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-26 22:40:13,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-26 22:40:13,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (13 of 18 remaining) [2023-08-26 22:40:13,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-26 22:40:13,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-26 22:40:13,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-26 22:40:13,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-26 22:40:13,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-26 22:40:13,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-26 22:40:13,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-26 22:40:13,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-26 22:40:13,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-26 22:40:13,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-26 22:40:13,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-26 22:40:13,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-26 22:40:13,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-26 22:40:13,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:40:13,656 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 22:40:13,657 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:40:13,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:40:13,688 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:40:13,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 233 transitions, 496 flow [2023-08-26 22:40:13,847 INFO L124 PetriNetUnfolderBase]: 54/477 cut-off events. [2023-08-26 22:40:13,847 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:40:13,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 477 events. 54/477 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1725 event pairs, 1 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 318. Up to 16 conditions per place. [2023-08-26 22:40:13,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 233 transitions, 496 flow [2023-08-26 22:40:13,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 233 transitions, 496 flow [2023-08-26 22:40:13,859 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:40:13,859 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 233 transitions, 496 flow [2023-08-26 22:40:13,860 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 233 transitions, 496 flow [2023-08-26 22:40:13,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 233 transitions, 496 flow [2023-08-26 22:40:13,916 INFO L124 PetriNetUnfolderBase]: 54/477 cut-off events. [2023-08-26 22:40:13,916 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:40:13,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 477 events. 54/477 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1725 event pairs, 1 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 318. Up to 16 conditions per place. [2023-08-26 22:40:13,942 INFO L119 LiptonReduction]: Number of co-enabled transitions 28512 [2023-08-26 22:40:17,425 INFO L134 LiptonReduction]: Checked pairs total: 78217 [2023-08-26 22:40:17,426 INFO L136 LiptonReduction]: Total number of compositions: 178 [2023-08-26 22:40:17,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:40:17,428 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;@4cd6fcd4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:40:17,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-26 22:40:17,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:40:17,429 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 22:40:17,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:40:17,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:17,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:40:17,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:40:17,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1316338491, now seen corresponding path program 1 times [2023-08-26 22:40:17,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:17,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808123724] [2023-08-26 22:40:17,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:17,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:17,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:17,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808123724] [2023-08-26 22:40:17,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808123724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:17,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:17,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:40:17,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97344319] [2023-08-26 22:40:17,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:17,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:40:17,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:17,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:40:17,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:40:17,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 411 [2023-08-26 22:40:17,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 104 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:17,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:17,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 411 [2023-08-26 22:40:17,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:34,880 INFO L124 PetriNetUnfolderBase]: 219536/308640 cut-off events. [2023-08-26 22:40:34,880 INFO L125 PetriNetUnfolderBase]: For 3577/3577 co-relation queries the response was YES. [2023-08-26 22:40:35,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613108 conditions, 308640 events. 219536/308640 cut-off events. For 3577/3577 co-relation queries the response was YES. Maximal size of possible extension queue 6335. Compared 2357187 event pairs, 142949 based on Foata normal form. 24262/242442 useless extension candidates. Maximal degree in co-relation 43161. Up to 302103 conditions per place. [2023-08-26 22:40:36,398 INFO L140 encePairwiseOnDemand]: 385/411 looper letters, 89 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-08-26 22:40:36,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 102 transitions, 416 flow [2023-08-26 22:40:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:40:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:40:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2023-08-26 22:40:36,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.570154095701541 [2023-08-26 22:40:36,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2023-08-26 22:40:36,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2023-08-26 22:40:36,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:36,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2023-08-26 22:40:36,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:36,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:36,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:36,406 INFO L175 Difference]: Start difference. First operand has 87 places, 104 transitions, 238 flow. Second operand 3 states and 703 transitions. [2023-08-26 22:40:36,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 102 transitions, 416 flow [2023-08-26 22:40:36,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 102 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:40:36,580 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 212 flow [2023-08-26 22:40:36,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-08-26 22:40:36,581 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2023-08-26 22:40:36,581 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 212 flow [2023-08-26 22:40:36,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:36,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:36,582 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:40:36,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:40:36,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:40:36,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:36,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1600580225, now seen corresponding path program 1 times [2023-08-26 22:40:36,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:36,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116726550] [2023-08-26 22:40:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:36,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:36,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:36,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116726550] [2023-08-26 22:40:36,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116726550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:40:36,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962963075] [2023-08-26 22:40:36,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:36,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:40:36,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:40:36,637 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) [2023-08-26 22:40:36,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 22:40:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:36,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 22:40:36,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:40:36,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:36,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:40:36,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962963075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:36,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:40:36,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 22:40:36,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629541944] [2023-08-26 22:40:36,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:36,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:40:36,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:36,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:40:36,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:40:36,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 411 [2023-08-26 22:40:36,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:36,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:36,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 411 [2023-08-26 22:40:36,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:40:52,454 INFO L124 PetriNetUnfolderBase]: 205172/295608 cut-off events. [2023-08-26 22:40:52,454 INFO L125 PetriNetUnfolderBase]: For 13139/13139 co-relation queries the response was YES. [2023-08-26 22:40:52,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596137 conditions, 295608 events. 205172/295608 cut-off events. For 13139/13139 co-relation queries the response was YES. Maximal size of possible extension queue 5955. Compared 2447273 event pairs, 33011 based on Foata normal form. 0/219674 useless extension candidates. Maximal degree in co-relation 49761. Up to 209171 conditions per place. [2023-08-26 22:40:54,087 INFO L140 encePairwiseOnDemand]: 407/411 looper letters, 135 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2023-08-26 22:40:54,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 149 transitions, 616 flow [2023-08-26 22:40:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:40:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:40:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 915 transitions. [2023-08-26 22:40:54,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565693430656934 [2023-08-26 22:40:54,093 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 915 transitions. [2023-08-26 22:40:54,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 915 transitions. [2023-08-26 22:40:54,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:40:54,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 915 transitions. [2023-08-26 22:40:54,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 228.75) internal successors, (915), 4 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:54,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 411.0) internal successors, (2055), 5 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:54,099 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 411.0) internal successors, (2055), 5 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:54,099 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 212 flow. Second operand 4 states and 915 transitions. [2023-08-26 22:40:54,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 149 transitions, 616 flow [2023-08-26 22:40:54,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 149 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:40:54,106 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 212 flow [2023-08-26 22:40:54,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2023-08-26 22:40:54,107 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2023-08-26 22:40:54,107 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 212 flow [2023-08-26 22:40:54,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:54,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:54,108 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:40:54,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 22:40:54,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:40:54,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:40:54,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:54,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1600580250, now seen corresponding path program 1 times [2023-08-26 22:40:54,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:54,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869806236] [2023-08-26 22:40:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:54,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:40:54,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:54,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869806236] [2023-08-26 22:40:54,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869806236] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:54,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:54,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:40:54,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420394476] [2023-08-26 22:40:54,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:54,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:40:54,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:40:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:40:54,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 411 [2023-08-26 22:40:54,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:54,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:54,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 411 [2023-08-26 22:40:54,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:08,460 INFO L124 PetriNetUnfolderBase]: 190808/274991 cut-off events. [2023-08-26 22:41:08,460 INFO L125 PetriNetUnfolderBase]: For 8058/8058 co-relation queries the response was YES. [2023-08-26 22:41:08,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555910 conditions, 274991 events. 190808/274991 cut-off events. For 8058/8058 co-relation queries the response was YES. Maximal size of possible extension queue 5462. Compared 2248181 event pairs, 23884 based on Foata normal form. 0/207893 useless extension candidates. Maximal degree in co-relation 255880. Up to 228754 conditions per place. [2023-08-26 22:41:09,664 INFO L140 encePairwiseOnDemand]: 407/411 looper letters, 116 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2023-08-26 22:41:09,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 546 flow [2023-08-26 22:41:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:41:09,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:41:09,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2023-08-26 22:41:09,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5693430656934306 [2023-08-26 22:41:09,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2023-08-26 22:41:09,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2023-08-26 22:41:09,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:09,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2023-08-26 22:41:09,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:09,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:09,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:09,672 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 212 flow. Second operand 3 states and 702 transitions. [2023-08-26 22:41:09,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 546 flow [2023-08-26 22:41:09,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 131 transitions, 542 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:41:09,689 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 220 flow [2023-08-26 22:41:09,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2023-08-26 22:41:09,690 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2023-08-26 22:41:09,690 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 220 flow [2023-08-26 22:41:09,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:09,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:09,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:41:09,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 22:41:09,691 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:41:09,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:09,692 INFO L85 PathProgramCache]: Analyzing trace with hash 887674843, now seen corresponding path program 1 times [2023-08-26 22:41:09,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:09,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142306402] [2023-08-26 22:41:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:09,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:41:09,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:09,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142306402] [2023-08-26 22:41:09,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142306402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:09,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:09,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:41:09,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446298042] [2023-08-26 22:41:09,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:09,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:41:09,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:09,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:41:09,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:41:09,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 411 [2023-08-26 22:41:09,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:09,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:09,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 411 [2023-08-26 22:41:09,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:22,470 INFO L124 PetriNetUnfolderBase]: 176374/246815 cut-off events. [2023-08-26 22:41:22,470 INFO L125 PetriNetUnfolderBase]: For 51884/51884 co-relation queries the response was YES. [2023-08-26 22:41:22,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516793 conditions, 246815 events. 176374/246815 cut-off events. For 51884/51884 co-relation queries the response was YES. Maximal size of possible extension queue 5201. Compared 1824044 event pairs, 76585 based on Foata normal form. 0/187024 useless extension candidates. Maximal degree in co-relation 253591. Up to 232701 conditions per place. [2023-08-26 22:41:23,868 INFO L140 encePairwiseOnDemand]: 399/411 looper letters, 100 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2023-08-26 22:41:23,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 115 transitions, 521 flow [2023-08-26 22:41:23,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:41:23,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:41:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-08-26 22:41:23,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545823195458232 [2023-08-26 22:41:23,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-08-26 22:41:23,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-08-26 22:41:23,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:23,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-08-26 22:41:23,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:23,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:23,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:23,874 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 220 flow. Second operand 3 states and 673 transitions. [2023-08-26 22:41:23,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 115 transitions, 521 flow [2023-08-26 22:41:23,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 115 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:41:23,892 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 256 flow [2023-08-26 22:41:23,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=93, PETRI_TRANSITIONS=86} [2023-08-26 22:41:23,892 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 6 predicate places. [2023-08-26 22:41:23,893 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 256 flow [2023-08-26 22:41:23,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:23,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:23,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:41:23,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 22:41:23,893 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:41:23,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:23,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1719797882, now seen corresponding path program 1 times [2023-08-26 22:41:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:23,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501517576] [2023-08-26 22:41:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:23,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:41:23,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:23,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501517576] [2023-08-26 22:41:23,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501517576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:23,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:23,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:41:23,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993971904] [2023-08-26 22:41:23,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:23,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:41:23,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:23,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:41:23,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:41:23,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 411 [2023-08-26 22:41:23,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 256 flow. Second operand has 5 states, 5 states have (on average 184.6) internal successors, (923), 5 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:23,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:23,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 411 [2023-08-26 22:41:23,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:42,984 INFO L124 PetriNetUnfolderBase]: 225523/320244 cut-off events. [2023-08-26 22:41:42,984 INFO L125 PetriNetUnfolderBase]: For 73300/73300 co-relation queries the response was YES. [2023-08-26 22:41:43,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713701 conditions, 320244 events. 225523/320244 cut-off events. For 73300/73300 co-relation queries the response was YES. Maximal size of possible extension queue 7279. Compared 2532899 event pairs, 49677 based on Foata normal form. 0/266556 useless extension candidates. Maximal degree in co-relation 479247. Up to 190744 conditions per place. [2023-08-26 22:41:45,503 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 259 selfloop transitions, 29 changer transitions 0/299 dead transitions. [2023-08-26 22:41:45,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 299 transitions, 1443 flow [2023-08-26 22:41:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:41:45,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:41:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1567 transitions. [2023-08-26 22:41:45,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446645811609315 [2023-08-26 22:41:45,516 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1567 transitions. [2023-08-26 22:41:45,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1567 transitions. [2023-08-26 22:41:45,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:45,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1567 transitions. [2023-08-26 22:41:45,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 223.85714285714286) internal successors, (1567), 7 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:45,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:45,547 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:45,547 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 256 flow. Second operand 7 states and 1567 transitions. [2023-08-26 22:41:45,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 299 transitions, 1443 flow [2023-08-26 22:41:45,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 299 transitions, 1437 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:41:45,576 INFO L231 Difference]: Finished difference. Result has 103 places, 111 transitions, 504 flow [2023-08-26 22:41:45,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=504, PETRI_PLACES=103, PETRI_TRANSITIONS=111} [2023-08-26 22:41:45,577 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 16 predicate places. [2023-08-26 22:41:45,577 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 111 transitions, 504 flow [2023-08-26 22:41:45,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 184.6) internal successors, (923), 5 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:45,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:45,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:41:45,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 22:41:45,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:41:45,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:45,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1719797781, now seen corresponding path program 1 times [2023-08-26 22:41:45,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:45,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36855590] [2023-08-26 22:41:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:45,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:41:45,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:45,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36855590] [2023-08-26 22:41:45,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36855590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:45,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:45,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:41:45,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76979784] [2023-08-26 22:41:45,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:45,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:41:45,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:45,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:41:45,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:41:45,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 411 [2023-08-26 22:41:45,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 111 transitions, 504 flow. Second operand has 5 states, 5 states have (on average 184.6) internal successors, (923), 5 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:45,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:45,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 411 [2023-08-26 22:41:45,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:42:07,633 INFO L124 PetriNetUnfolderBase]: 231494/334599 cut-off events. [2023-08-26 22:42:07,633 INFO L125 PetriNetUnfolderBase]: For 264563/264563 co-relation queries the response was YES. [2023-08-26 22:42:08,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887366 conditions, 334599 events. 231494/334599 cut-off events. For 264563/264563 co-relation queries the response was YES. Maximal size of possible extension queue 7871. Compared 2759905 event pairs, 46663 based on Foata normal form. 10776/327313 useless extension candidates. Maximal degree in co-relation 736366. Up to 213165 conditions per place. [2023-08-26 22:42:09,660 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 279 selfloop transitions, 35 changer transitions 0/325 dead transitions. [2023-08-26 22:42:09,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 325 transitions, 1887 flow [2023-08-26 22:42:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:42:09,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:42:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1567 transitions. [2023-08-26 22:42:09,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446645811609315 [2023-08-26 22:42:09,664 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1567 transitions. [2023-08-26 22:42:09,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1567 transitions. [2023-08-26 22:42:09,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:42:09,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1567 transitions. [2023-08-26 22:42:09,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 223.85714285714286) internal successors, (1567), 7 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:42:09,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:42:09,672 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:42:09,672 INFO L175 Difference]: Start difference. First operand has 103 places, 111 transitions, 504 flow. Second operand 7 states and 1567 transitions. [2023-08-26 22:42:09,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 325 transitions, 1887 flow [2023-08-26 22:42:11,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 325 transitions, 1881 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:42:11,561 INFO L231 Difference]: Finished difference. Result has 112 places, 137 transitions, 884 flow [2023-08-26 22:42:11,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=884, PETRI_PLACES=112, PETRI_TRANSITIONS=137} [2023-08-26 22:42:11,561 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 25 predicate places. [2023-08-26 22:42:11,562 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 137 transitions, 884 flow [2023-08-26 22:42:11,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 184.6) internal successors, (923), 5 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:42:11,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:42:11,562 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 22:42:11,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 22:42:11,562 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:42:11,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:42:11,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1251221682, now seen corresponding path program 1 times [2023-08-26 22:42:11,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:42:11,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987846818] [2023-08-26 22:42:11,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:42:11,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:42:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:42:11,575 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:42:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:42:11,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:42:11,586 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:42:11,586 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-26 22:42:11,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-26 22:42:11,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-26 22:42:11,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-26 22:42:11,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (17 of 22 remaining) [2023-08-26 22:42:11,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-26 22:42:11,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-26 22:42:11,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-26 22:42:11,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-26 22:42:11,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-26 22:42:11,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-26 22:42:11,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-26 22:42:11,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2023-08-26 22:42:11,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2023-08-26 22:42:11,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-26 22:42:11,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-26 22:42:11,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-26 22:42:11,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-26 22:42:11,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-26 22:42:11,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-26 22:42:11,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-26 22:42:11,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-26 22:42:11,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 22:42:11,589 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:42:11,589 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:42:11,589 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 22:42:11,612 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 22:42:11,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 279 transitions, 602 flow [2023-08-26 22:42:11,684 INFO L124 PetriNetUnfolderBase]: 86/728 cut-off events. [2023-08-26 22:42:11,684 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:42:11,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 728 events. 86/728 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3006 event pairs, 6 based on Foata normal form. 0/583 useless extension candidates. Maximal degree in co-relation 497. Up to 32 conditions per place. [2023-08-26 22:42:11,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 279 transitions, 602 flow [2023-08-26 22:42:11,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 279 transitions, 602 flow [2023-08-26 22:42:11,695 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:42:11,696 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 279 transitions, 602 flow [2023-08-26 22:42:11,696 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 279 transitions, 602 flow [2023-08-26 22:42:11,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 279 transitions, 602 flow [2023-08-26 22:42:11,753 INFO L124 PetriNetUnfolderBase]: 86/728 cut-off events. [2023-08-26 22:42:11,753 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:42:11,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 728 events. 86/728 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3006 event pairs, 6 based on Foata normal form. 0/583 useless extension candidates. Maximal degree in co-relation 497. Up to 32 conditions per place. [2023-08-26 22:42:11,781 INFO L119 LiptonReduction]: Number of co-enabled transitions 46288 [2023-08-26 22:42:15,289 INFO L134 LiptonReduction]: Checked pairs total: 131219 [2023-08-26 22:42:15,289 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-08-26 22:42:15,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:42:15,291 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;@4cd6fcd4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:42:15,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-26 22:42:15,293 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:42:15,293 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-26 22:42:15,293 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:42:15,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:42:15,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:42:15,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-26 22:42:15,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:42:15,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1825754291, now seen corresponding path program 1 times [2023-08-26 22:42:15,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:42:15,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250348031] [2023-08-26 22:42:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:42:15,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:42:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:42:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:42:15,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:42:15,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250348031] [2023-08-26 22:42:15,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250348031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:42:15,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:42:15,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:42:15,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372325081] [2023-08-26 22:42:15,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:42:15,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:42:15,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:42:15,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:42:15,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:42:15,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 488 [2023-08-26 22:42:15,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 132 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:42:15,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:42:15,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 488 [2023-08-26 22:42:15,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand