/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_41-trylock_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:41:25,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:41:25,690 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 22:41:25,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:41:25,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:41:25,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:41:25,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:41:25,730 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:41:25,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:41:25,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:41:25,734 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:41:25,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:41:25,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:41:25,736 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:41:25,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:41:25,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:41:25,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:41:25,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:41:25,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:41:25,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:41:25,737 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:41:25,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:41:25,738 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:41:25,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:41:25,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:41:25,738 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:41:25,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:41:25,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:41:25,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:41:25,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:41:25,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:41:25,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:41:25,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:41:25,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:41:25,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:41:25,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:41:26,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:41:26,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:41:26,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:41:26,077 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:41:26,077 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:41:26,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-08-26 22:41:27,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:41:27,504 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:41:27,504 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-08-26 22:41:27,514 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f827dbe/80925d4d294945de93c7fa9845cebd43/FLAGf5867cb22 [2023-08-26 22:41:27,524 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f827dbe/80925d4d294945de93c7fa9845cebd43 [2023-08-26 22:41:27,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:41:27,527 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:41:27,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:41:27,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:41:27,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:41:27,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:41:27" (1/1) ... [2023-08-26 22:41:27,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26164d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:27, skipping insertion in model container [2023-08-26 22:41:27,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:41:27" (1/1) ... [2023-08-26 22:41:27,566 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:41:27,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:41:27,914 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:41:27,942 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:41:27,943 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:41:27,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:41:28,013 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:41:28,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:28 WrapperNode [2023-08-26 22:41:28,014 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:41:28,015 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:41:28,015 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:41:28,015 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:41:28,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:28" (1/1) ... [2023-08-26 22:41:28,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:28" (1/1) ... [2023-08-26 22:41:28,074 INFO L138 Inliner]: procedures = 171, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2023-08-26 22:41:28,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:41:28,075 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:41:28,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:41:28,076 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:41:28,083 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:28" (1/1) ... [2023-08-26 22:41:28,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:28" (1/1) ... [2023-08-26 22:41:28,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:28" (1/1) ... [2023-08-26 22:41:28,087 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:28" (1/1) ... [2023-08-26 22:41:28,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:28" (1/1) ... [2023-08-26 22:41:28,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:28" (1/1) ... [2023-08-26 22:41:28,107 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:28" (1/1) ... [2023-08-26 22:41:28,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:28" (1/1) ... [2023-08-26 22:41:28,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:41:28,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:41:28,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:41:28,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:41:28,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:28" (1/1) ... [2023-08-26 22:41:28,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:41:28,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:41:28,151 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 22:41:28,153 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 22:41:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:41:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:41:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:41:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:41:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:41:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:41:28,175 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:41:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:41:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-26 22:41:28,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:41:28,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:41:28,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:41:28,177 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 22:41:28,276 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:41:28,278 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:41:28,471 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:41:28,477 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:41:28,477 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-26 22:41:28,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:41:28 BoogieIcfgContainer [2023-08-26 22:41:28,479 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:41:28,481 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:41:28,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:41:28,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:41:28,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:41:27" (1/3) ... [2023-08-26 22:41:28,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6f1ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:41:28, skipping insertion in model container [2023-08-26 22:41:28,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:28" (2/3) ... [2023-08-26 22:41:28,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6f1ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:41:28, skipping insertion in model container [2023-08-26 22:41:28,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:41:28" (3/3) ... [2023-08-26 22:41:28,486 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2023-08-26 22:41:28,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:41:28,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-26 22:41:28,500 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:41:28,570 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:41:28,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 125 transitions, 258 flow [2023-08-26 22:41:28,685 INFO L124 PetriNetUnfolderBase]: 23/168 cut-off events. [2023-08-26 22:41:28,685 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:41:28,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 168 events. 23/168 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 432 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 88. Up to 6 conditions per place. [2023-08-26 22:41:28,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 125 transitions, 258 flow [2023-08-26 22:41:28,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 122 transitions, 252 flow [2023-08-26 22:41:28,697 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:41:28,704 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 122 transitions, 252 flow [2023-08-26 22:41:28,706 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 122 transitions, 252 flow [2023-08-26 22:41:28,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 122 transitions, 252 flow [2023-08-26 22:41:28,747 INFO L124 PetriNetUnfolderBase]: 22/165 cut-off events. [2023-08-26 22:41:28,747 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:41:28,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 165 events. 22/165 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 431 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 88. Up to 6 conditions per place. [2023-08-26 22:41:28,753 INFO L119 LiptonReduction]: Number of co-enabled transitions 3816 [2023-08-26 22:41:31,159 INFO L134 LiptonReduction]: Checked pairs total: 5619 [2023-08-26 22:41:31,159 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-26 22:41:31,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:41:31,176 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;@19c7bdc9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:41:31,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-26 22:41:31,178 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:41:31,178 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-08-26 22:41:31,178 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:41:31,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:31,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:41:31,179 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 22:41:31,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:31,183 INFO L85 PathProgramCache]: Analyzing trace with hash 15012539, now seen corresponding path program 1 times [2023-08-26 22:41:31,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:31,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483006254] [2023-08-26 22:41:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:31,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:31,414 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 22:41:31,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:31,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483006254] [2023-08-26 22:41:31,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483006254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:31,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:31,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:41:31,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961592556] [2023-08-26 22:41:31,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:31,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:41:31,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:31,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:41:31,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:41:31,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 231 [2023-08-26 22:41:31,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:31,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:31,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 231 [2023-08-26 22:41:31,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:31,586 INFO L124 PetriNetUnfolderBase]: 145/309 cut-off events. [2023-08-26 22:41:31,586 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:41:31,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 309 events. 145/309 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1253 event pairs, 110 based on Foata normal form. 25/233 useless extension candidates. Maximal degree in co-relation 601. Up to 292 conditions per place. [2023-08-26 22:41:31,593 INFO L140 encePairwiseOnDemand]: 215/231 looper letters, 40 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-26 22:41:31,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 180 flow [2023-08-26 22:41:31,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:41:31,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:41:31,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-08-26 22:41:31,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266955266955267 [2023-08-26 22:41:31,612 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-08-26 22:41:31,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-08-26 22:41:31,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:31,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-08-26 22:41:31,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 22:41:31,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 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 22:41:31,626 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 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 22:41:31,628 INFO L175 Difference]: Start difference. First operand has 37 places, 45 transitions, 98 flow. Second operand 3 states and 365 transitions. [2023-08-26 22:41:31,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 180 flow [2023-08-26 22:41:31,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:41:31,633 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 78 flow [2023-08-26 22:41:31,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-26 22:41:31,638 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-08-26 22:41:31,638 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 78 flow [2023-08-26 22:41:31,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:31,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:31,639 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:41:31,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:41:31,639 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 22:41:31,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:31,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1542171071, now seen corresponding path program 1 times [2023-08-26 22:41:31,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:31,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764578834] [2023-08-26 22:41:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:31,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:41:31,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:41:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:41:31,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:41:31,731 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:41:31,732 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2023-08-26 22:41:31,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-26 22:41:31,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-26 22:41:31,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-26 22:41:31,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (9 of 14 remaining) [2023-08-26 22:41:31,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-08-26 22:41:31,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-08-26 22:41:31,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-08-26 22:41:31,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-08-26 22:41:31,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-08-26 22:41:31,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-26 22:41:31,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-26 22:41:31,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-26 22:41:31,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-26 22:41:31,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:41:31,736 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 22:41:31,738 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:41:31,738 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:41:31,756 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:41:31,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 163 transitions, 344 flow [2023-08-26 22:41:31,791 INFO L124 PetriNetUnfolderBase]: 40/286 cut-off events. [2023-08-26 22:41:31,791 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:41:31,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 286 events. 40/286 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 891 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 170. Up to 9 conditions per place. [2023-08-26 22:41:31,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 163 transitions, 344 flow [2023-08-26 22:41:31,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 163 transitions, 344 flow [2023-08-26 22:41:31,795 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:41:31,795 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 163 transitions, 344 flow [2023-08-26 22:41:31,796 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 163 transitions, 344 flow [2023-08-26 22:41:31,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 163 transitions, 344 flow [2023-08-26 22:41:31,823 INFO L124 PetriNetUnfolderBase]: 40/286 cut-off events. [2023-08-26 22:41:31,824 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:41:31,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 286 events. 40/286 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 891 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 170. Up to 9 conditions per place. [2023-08-26 22:41:31,832 INFO L119 LiptonReduction]: Number of co-enabled transitions 11592 [2023-08-26 22:41:34,229 INFO L134 LiptonReduction]: Checked pairs total: 27560 [2023-08-26 22:41:34,230 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-26 22:41:34,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:41:34,233 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;@19c7bdc9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:41:34,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-26 22:41:34,235 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:41:34,235 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-26 22:41:34,235 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:41:34,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:34,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:41:34,235 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 22:41:34,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:34,236 INFO L85 PathProgramCache]: Analyzing trace with hash 779266429, now seen corresponding path program 1 times [2023-08-26 22:41:34,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:34,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288144273] [2023-08-26 22:41:34,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:34,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:34,319 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 22:41:34,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:34,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288144273] [2023-08-26 22:41:34,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288144273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:34,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:34,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:41:34,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750366160] [2023-08-26 22:41:34,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:34,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:41:34,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:34,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:41:34,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:41:34,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 291 [2023-08-26 22:41:34,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 71 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 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 22:41:34,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:34,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 291 [2023-08-26 22:41:34,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:35,133 INFO L124 PetriNetUnfolderBase]: 6187/9818 cut-off events. [2023-08-26 22:41:35,134 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-08-26 22:41:35,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19584 conditions, 9818 events. 6187/9818 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 62892 event pairs, 2828 based on Foata normal form. 922/7282 useless extension candidates. Maximal degree in co-relation 2257. Up to 9644 conditions per place. [2023-08-26 22:41:35,180 INFO L140 encePairwiseOnDemand]: 271/291 looper letters, 63 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-26 22:41:35,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 290 flow [2023-08-26 22:41:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:41:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:41:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-26 22:41:35,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5521191294387171 [2023-08-26 22:41:35,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-26 22:41:35,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-26 22:41:35,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:35,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-26 22:41:35,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 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 22:41:35,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:41:35,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:41:35,189 INFO L175 Difference]: Start difference. First operand has 58 places, 71 transitions, 160 flow. Second operand 3 states and 482 transitions. [2023-08-26 22:41:35,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 290 flow [2023-08-26 22:41:35,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 290 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:41:35,191 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 146 flow [2023-08-26 22:41:35,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-26 22:41:35,192 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-08-26 22:41:35,192 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 146 flow [2023-08-26 22:41:35,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 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 22:41:35,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:35,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:41:35,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:41:35,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:41:35,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1555434180, now seen corresponding path program 1 times [2023-08-26 22:41:35,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:35,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099282229] [2023-08-26 22:41:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:35,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:35,238 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 22:41:35,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:35,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099282229] [2023-08-26 22:41:35,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099282229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:35,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:35,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:41:35,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104762799] [2023-08-26 22:41:35,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:35,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:41:35,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:35,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:41:35,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:41:35,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 291 [2023-08-26 22:41:35,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 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 22:41:35,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:35,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 291 [2023-08-26 22:41:35,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:35,848 INFO L124 PetriNetUnfolderBase]: 5499/8754 cut-off events. [2023-08-26 22:41:35,849 INFO L125 PetriNetUnfolderBase]: For 490/490 co-relation queries the response was YES. [2023-08-26 22:41:35,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18255 conditions, 8754 events. 5499/8754 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 54592 event pairs, 2170 based on Foata normal form. 0/6072 useless extension candidates. Maximal degree in co-relation 18167. Up to 8020 conditions per place. [2023-08-26 22:41:35,889 INFO L140 encePairwiseOnDemand]: 282/291 looper letters, 71 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-08-26 22:41:35,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 356 flow [2023-08-26 22:41:35,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:41:35,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:41:35,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-08-26 22:41:35,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326460481099656 [2023-08-26 22:41:35,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-08-26 22:41:35,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-08-26 22:41:35,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:35,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-08-26 22:41:35,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 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 22:41:35,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:41:35,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:41:35,895 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 146 flow. Second operand 3 states and 465 transitions. [2023-08-26 22:41:35,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 356 flow [2023-08-26 22:41:35,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 80 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:41:35,898 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 173 flow [2023-08-26 22:41:35,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2023-08-26 22:41:35,899 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2023-08-26 22:41:35,899 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 173 flow [2023-08-26 22:41:35,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 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 22:41:35,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:35,900 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:41:35,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:41:35,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:41:35,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:35,901 INFO L85 PathProgramCache]: Analyzing trace with hash -62857957, now seen corresponding path program 1 times [2023-08-26 22:41:35,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:35,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359991935] [2023-08-26 22:41:35,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:35,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:35,944 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 22:41:35,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:35,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359991935] [2023-08-26 22:41:35,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359991935] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:41:35,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490756493] [2023-08-26 22:41:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:35,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:41:35,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:41:35,949 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 22:41:35,977 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 22:41:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:36,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 22:41:36,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:41:36,067 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 22:41:36,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:41:36,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490756493] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:36,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:41:36,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 22:41:36,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584623521] [2023-08-26 22:41:36,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:36,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:41:36,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:36,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:41:36,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:41:36,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 291 [2023-08-26 22:41:36,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 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 22:41:36,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:36,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 291 [2023-08-26 22:41:36,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:36,744 INFO L124 PetriNetUnfolderBase]: 5148/8187 cut-off events. [2023-08-26 22:41:36,745 INFO L125 PetriNetUnfolderBase]: For 885/885 co-relation queries the response was YES. [2023-08-26 22:41:36,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18293 conditions, 8187 events. 5148/8187 cut-off events. For 885/885 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 54204 event pairs, 598 based on Foata normal form. 0/6223 useless extension candidates. Maximal degree in co-relation 11435. Up to 6037 conditions per place. [2023-08-26 22:41:36,787 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 90 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2023-08-26 22:41:36,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 458 flow [2023-08-26 22:41:36,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:41:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:41:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 614 transitions. [2023-08-26 22:41:36,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274914089347079 [2023-08-26 22:41:36,790 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 614 transitions. [2023-08-26 22:41:36,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 614 transitions. [2023-08-26 22:41:36,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:36,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 614 transitions. [2023-08-26 22:41:36,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 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 22:41:36,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 22:41:36,795 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 22:41:36,795 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 173 flow. Second operand 4 states and 614 transitions. [2023-08-26 22:41:36,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 458 flow [2023-08-26 22:41:36,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 99 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:41:36,799 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 172 flow [2023-08-26 22:41:36,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-26 22:41:36,800 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-08-26 22:41:36,800 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 172 flow [2023-08-26 22:41:36,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 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 22:41:36,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:36,801 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:41:36,812 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 22:41:37,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:41:37,007 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:41:37,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash -62857956, now seen corresponding path program 1 times [2023-08-26 22:41:37,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:37,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115891537] [2023-08-26 22:41:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:37,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:37,039 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 22:41:37,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:37,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115891537] [2023-08-26 22:41:37,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115891537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:37,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:37,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:41:37,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941691097] [2023-08-26 22:41:37,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:37,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:41:37,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:37,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:41:37,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:41:37,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 291 [2023-08-26 22:41:37,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 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 22:41:37,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:37,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 291 [2023-08-26 22:41:37,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:37,514 INFO L124 PetriNetUnfolderBase]: 4797/7596 cut-off events. [2023-08-26 22:41:37,514 INFO L125 PetriNetUnfolderBase]: For 763/763 co-relation queries the response was YES. [2023-08-26 22:41:37,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17002 conditions, 7596 events. 4797/7596 cut-off events. For 763/763 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 48726 event pairs, 517 based on Foata normal form. 0/5895 useless extension candidates. Maximal degree in co-relation 13934. Up to 6601 conditions per place. [2023-08-26 22:41:37,549 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 77 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2023-08-26 22:41:37,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 406 flow [2023-08-26 22:41:37,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:41:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:41:37,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-08-26 22:41:37,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5383734249713631 [2023-08-26 22:41:37,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-08-26 22:41:37,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-08-26 22:41:37,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:37,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-08-26 22:41:37,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 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 22:41:37,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:41:37,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:41:37,558 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 172 flow. Second operand 3 states and 470 transitions. [2023-08-26 22:41:37,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 406 flow [2023-08-26 22:41:37,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:41:37,563 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 180 flow [2023-08-26 22:41:37,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-26 22:41:37,566 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-08-26 22:41:37,566 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 180 flow [2023-08-26 22:41:37,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 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 22:41:37,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:37,567 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:41:37,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:41:37,567 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 22:41:37,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:37,568 INFO L85 PathProgramCache]: Analyzing trace with hash -276912462, now seen corresponding path program 1 times [2023-08-26 22:41:37,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:37,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275599033] [2023-08-26 22:41:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:37,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:41:37,594 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:41:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:41:37,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:41:37,617 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:41:37,617 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-26 22:41:37,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-26 22:41:37,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-26 22:41:37,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-26 22:41:37,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (13 of 18 remaining) [2023-08-26 22:41:37,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-26 22:41:37,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-26 22:41:37,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-26 22:41:37,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-26 22:41:37,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-26 22:41:37,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-26 22:41:37,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-26 22:41:37,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-26 22:41:37,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-26 22:41:37,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-26 22:41:37,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-26 22:41:37,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-26 22:41:37,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-26 22:41:37,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:41:37,620 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 22:41:37,621 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:41:37,621 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:41:37,658 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:41:37,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 201 transitions, 432 flow [2023-08-26 22:41:37,709 INFO L124 PetriNetUnfolderBase]: 62/445 cut-off events. [2023-08-26 22:41:37,713 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:41:37,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 445 events. 62/445 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1556 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 294. Up to 16 conditions per place. [2023-08-26 22:41:37,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 201 transitions, 432 flow [2023-08-26 22:41:37,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 201 transitions, 432 flow [2023-08-26 22:41:37,719 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:41:37,719 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 201 transitions, 432 flow [2023-08-26 22:41:37,719 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 201 transitions, 432 flow [2023-08-26 22:41:37,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 201 transitions, 432 flow [2023-08-26 22:41:37,757 INFO L124 PetriNetUnfolderBase]: 62/445 cut-off events. [2023-08-26 22:41:37,757 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:41:37,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 445 events. 62/445 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1556 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 294. Up to 16 conditions per place. [2023-08-26 22:41:37,775 INFO L119 LiptonReduction]: Number of co-enabled transitions 21600 [2023-08-26 22:41:40,203 INFO L134 LiptonReduction]: Checked pairs total: 54880 [2023-08-26 22:41:40,203 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-26 22:41:40,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:41:40,206 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;@19c7bdc9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:41:40,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-26 22:41:40,207 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:41:40,207 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-08-26 22:41:40,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:41:40,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:40,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:41:40,208 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 22:41:40,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1153355858, now seen corresponding path program 1 times [2023-08-26 22:41:40,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:40,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964349576] [2023-08-26 22:41:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:40,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:40,250 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 22:41:40,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:40,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964349576] [2023-08-26 22:41:40,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964349576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:40,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:40,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:41:40,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501089463] [2023-08-26 22:41:40,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:40,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:41:40,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:40,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:41:40,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:41:40,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 354 [2023-08-26 22:41:40,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 96 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 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 22:41:40,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:40,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 354 [2023-08-26 22:41:40,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:48,820 INFO L124 PetriNetUnfolderBase]: 117326/166597 cut-off events. [2023-08-26 22:41:48,820 INFO L125 PetriNetUnfolderBase]: For 2273/2273 co-relation queries the response was YES. [2023-08-26 22:41:48,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329629 conditions, 166597 events. 117326/166597 cut-off events. For 2273/2273 co-relation queries the response was YES. Maximal size of possible extension queue 4692. Compared 1268312 event pairs, 74538 based on Foata normal form. 20952/128877 useless extension candidates. Maximal degree in co-relation 28431. Up to 161469 conditions per place. [2023-08-26 22:41:49,906 INFO L140 encePairwiseOnDemand]: 327/354 looper letters, 76 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-26 22:41:49,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 362 flow [2023-08-26 22:41:49,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:41:49,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:41:49,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-08-26 22:41:49,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574387947269304 [2023-08-26 22:41:49,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-08-26 22:41:49,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-08-26 22:41:49,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:49,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-08-26 22:41:49,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 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 22:41:49,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 22:41:49,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 22:41:49,914 INFO L175 Difference]: Start difference. First operand has 77 places, 96 transitions, 222 flow. Second operand 3 states and 592 transitions. [2023-08-26 22:41:49,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 362 flow [2023-08-26 22:41:49,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 362 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:41:49,920 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 192 flow [2023-08-26 22:41:49,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-08-26 22:41:49,921 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2023-08-26 22:41:49,921 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 192 flow [2023-08-26 22:41:49,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 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 22:41:49,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:49,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:41:49,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:41:49,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:41:49,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:49,922 INFO L85 PathProgramCache]: Analyzing trace with hash 279892754, now seen corresponding path program 1 times [2023-08-26 22:41:49,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:49,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678065552] [2023-08-26 22:41:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:49,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:49,958 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 22:41:49,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:49,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678065552] [2023-08-26 22:41:49,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678065552] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:49,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:49,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:41:49,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506885974] [2023-08-26 22:41:49,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:49,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:41:49,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:49,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:41:49,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:41:49,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 354 [2023-08-26 22:41:49,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 192 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 22:41:49,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:49,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 354 [2023-08-26 22:41:49,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:42:00,071 INFO L124 PetriNetUnfolderBase]: 144189/208059 cut-off events. [2023-08-26 22:42:00,072 INFO L125 PetriNetUnfolderBase]: For 10231/10231 co-relation queries the response was YES. [2023-08-26 22:42:00,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428701 conditions, 208059 events. 144189/208059 cut-off events. For 10231/10231 co-relation queries the response was YES. Maximal size of possible extension queue 6631. Compared 1679814 event pairs, 61256 based on Foata normal form. 0/143314 useless extension candidates. Maximal degree in co-relation 428606. Up to 144724 conditions per place. [2023-08-26 22:42:01,176 INFO L140 encePairwiseOnDemand]: 335/354 looper letters, 109 selfloop transitions, 13 changer transitions 0/131 dead transitions. [2023-08-26 22:42:01,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 131 transitions, 582 flow [2023-08-26 22:42:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:42:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:42:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-08-26 22:42:01,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556497175141243 [2023-08-26 22:42:01,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-08-26 22:42:01,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-08-26 22:42:01,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:42:01,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-08-26 22:42:01,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 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 22:42:01,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 22:42:01,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 22:42:01,183 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 192 flow. Second operand 3 states and 591 transitions. [2023-08-26 22:42:01,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 131 transitions, 582 flow [2023-08-26 22:42:01,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 131 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:42:01,223 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 302 flow [2023-08-26 22:42:01,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2023-08-26 22:42:01,224 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 5 predicate places. [2023-08-26 22:42:01,224 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 302 flow [2023-08-26 22:42:01,224 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 22:42:01,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:42:01,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:42:01,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 22:42:01,225 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:42:01,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:42:01,225 INFO L85 PathProgramCache]: Analyzing trace with hash 279892688, now seen corresponding path program 1 times [2023-08-26 22:42:01,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:42:01,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489710567] [2023-08-26 22:42:01,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:42:01,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:42:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:42:01,251 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 22:42:01,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:42:01,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489710567] [2023-08-26 22:42:01,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489710567] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:42:01,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:42:01,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:42:01,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87485257] [2023-08-26 22:42:01,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:42:01,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:42:01,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:42:01,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:42:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:42:01,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 354 [2023-08-26 22:42:01,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 302 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 22:42:01,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:42:01,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 354 [2023-08-26 22:42:01,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:42:12,904 INFO L124 PetriNetUnfolderBase]: 150825/220264 cut-off events. [2023-08-26 22:42:12,905 INFO L125 PetriNetUnfolderBase]: For 76585/78463 co-relation queries the response was YES. [2023-08-26 22:42:13,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536241 conditions, 220264 events. 150825/220264 cut-off events. For 76585/78463 co-relation queries the response was YES. Maximal size of possible extension queue 7251. Compared 1832644 event pairs, 53140 based on Foata normal form. 5022/197793 useless extension candidates. Maximal degree in co-relation 281015. Up to 164700 conditions per place. [2023-08-26 22:42:13,830 INFO L140 encePairwiseOnDemand]: 335/354 looper letters, 121 selfloop transitions, 16 changer transitions 0/146 dead transitions. [2023-08-26 22:42:13,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 146 transitions, 763 flow [2023-08-26 22:42:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:42:13,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:42:13,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-08-26 22:42:13,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556497175141243 [2023-08-26 22:42:13,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-08-26 22:42:13,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-08-26 22:42:13,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:42:13,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-08-26 22:42:13,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 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 22:42:13,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 22:42:13,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 22:42:13,836 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 302 flow. Second operand 3 states and 591 transitions. [2023-08-26 22:42:13,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 146 transitions, 763 flow [2023-08-26 22:42:14,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 146 transitions, 731 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:42:14,188 INFO L231 Difference]: Finished difference. Result has 84 places, 101 transitions, 448 flow [2023-08-26 22:42:14,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=84, PETRI_TRANSITIONS=101} [2023-08-26 22:42:14,188 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2023-08-26 22:42:14,188 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 101 transitions, 448 flow [2023-08-26 22:42:14,189 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 22:42:14,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:42:14,189 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:42:14,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 22:42:14,189 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:42:14,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:42:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash 832809043, now seen corresponding path program 1 times [2023-08-26 22:42:14,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:42:14,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048647058] [2023-08-26 22:42:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:42:14,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:42:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:42:14,211 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 22:42:14,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:42:14,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048647058] [2023-08-26 22:42:14,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048647058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:42:14,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:42:14,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:42:14,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464569279] [2023-08-26 22:42:14,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:42:14,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:42:14,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:42:14,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:42:14,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:42:14,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 354 [2023-08-26 22:42:14,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 101 transitions, 448 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 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 22:42:14,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:42:14,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 354 [2023-08-26 22:42:14,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:42:25,175 INFO L124 PetriNetUnfolderBase]: 139883/202717 cut-off events. [2023-08-26 22:42:25,175 INFO L125 PetriNetUnfolderBase]: For 204979/209318 co-relation queries the response was YES. [2023-08-26 22:42:25,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543054 conditions, 202717 events. 139883/202717 cut-off events. For 204979/209318 co-relation queries the response was YES. Maximal size of possible extension queue 6830. Compared 1737699 event pairs, 21757 based on Foata normal form. 430/179152 useless extension candidates. Maximal degree in co-relation 151182. Up to 164428 conditions per place. [2023-08-26 22:42:26,309 INFO L140 encePairwiseOnDemand]: 350/354 looper letters, 146 selfloop transitions, 4 changer transitions 0/163 dead transitions. [2023-08-26 22:42:26,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 163 transitions, 1048 flow [2023-08-26 22:42:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:42:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:42:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 585 transitions. [2023-08-26 22:42:26,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508474576271186 [2023-08-26 22:42:26,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 585 transitions. [2023-08-26 22:42:26,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 585 transitions. [2023-08-26 22:42:26,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:42:26,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 585 transitions. [2023-08-26 22:42:26,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 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 22:42:26,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 22:42:26,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 22:42:26,314 INFO L175 Difference]: Start difference. First operand has 84 places, 101 transitions, 448 flow. Second operand 3 states and 585 transitions. [2023-08-26 22:42:26,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 163 transitions, 1048 flow [2023-08-26 22:42:27,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 163 transitions, 990 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:42:27,237 INFO L231 Difference]: Finished difference. Result has 84 places, 101 transitions, 428 flow [2023-08-26 22:42:27,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=84, PETRI_TRANSITIONS=101} [2023-08-26 22:42:27,238 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2023-08-26 22:42:27,238 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 101 transitions, 428 flow [2023-08-26 22:42:27,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 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 22:42:27,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:42:27,238 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:42:27,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 22:42:27,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:42:27,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:42:27,239 INFO L85 PathProgramCache]: Analyzing trace with hash 832809042, now seen corresponding path program 1 times [2023-08-26 22:42:27,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:42:27,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563278171] [2023-08-26 22:42:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:42:27,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:42:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:42:27,270 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 22:42:27,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:42:27,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563278171] [2023-08-26 22:42:27,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563278171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:42:27,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:42:27,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:42:27,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101663242] [2023-08-26 22:42:27,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:42:27,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:42:27,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:42:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:42:27,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:42:27,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 354 [2023-08-26 22:42:27,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 101 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 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 22:42:27,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:42:27,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 354 [2023-08-26 22:42:27,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:42:37,357 INFO L124 PetriNetUnfolderBase]: 130318/189131 cut-off events. [2023-08-26 22:42:37,357 INFO L125 PetriNetUnfolderBase]: For 135913/139017 co-relation queries the response was YES. [2023-08-26 22:42:37,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498174 conditions, 189131 events. 130318/189131 cut-off events. For 135913/139017 co-relation queries the response was YES. Maximal size of possible extension queue 6260. Compared 1616205 event pairs, 21715 based on Foata normal form. 4274/160292 useless extension candidates. Maximal degree in co-relation 125486. Up to 150990 conditions per place. [2023-08-26 22:42:38,184 INFO L140 encePairwiseOnDemand]: 351/354 looper letters, 147 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2023-08-26 22:42:38,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 162 transitions, 998 flow [2023-08-26 22:42:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:42:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:42:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2023-08-26 22:42:38,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489642184557438 [2023-08-26 22:42:38,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2023-08-26 22:42:38,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2023-08-26 22:42:38,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:42:38,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2023-08-26 22:42:38,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 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 22:42:38,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 22:42:38,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 22:42:38,189 INFO L175 Difference]: Start difference. First operand has 84 places, 101 transitions, 428 flow. Second operand 3 states and 583 transitions. [2023-08-26 22:42:38,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 162 transitions, 998 flow [2023-08-26 22:42:38,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 162 transitions, 994 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:42:38,220 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 424 flow [2023-08-26 22:42:38,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=84, PETRI_TRANSITIONS=100} [2023-08-26 22:42:38,220 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2023-08-26 22:42:38,221 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 424 flow [2023-08-26 22:42:38,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 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 22:42:38,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:42:38,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:42:38,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 22:42:38,221 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:42:38,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:42:38,221 INFO L85 PathProgramCache]: Analyzing trace with hash 831072121, now seen corresponding path program 1 times [2023-08-26 22:42:38,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:42:38,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399118479] [2023-08-26 22:42:38,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:42:38,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:42:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:42:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:42:38,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:42:38,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399118479] [2023-08-26 22:42:38,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399118479] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:42:38,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407962240] [2023-08-26 22:42:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:42:38,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:42:38,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:42:38,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:42:38,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 22:42:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:42:38,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:42:38,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:42:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:42:38,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:42:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:42:38,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407962240] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:42:38,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:42:38,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:42:38,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143013768] [2023-08-26 22:42:38,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:42:38,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:42:38,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:42:38,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:42:38,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:42:38,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 354 [2023-08-26 22:42:38,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 424 flow. Second operand has 7 states, 7 states have (on average 163.42857142857142) internal successors, (1144), 7 states have internal predecessors, (1144), 0 states have call successors, (0), 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 22:42:38,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:42:38,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 354 [2023-08-26 22:42:38,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:42:40,904 INFO L124 PetriNetUnfolderBase]: 24526/40880 cut-off events. [2023-08-26 22:42:40,904 INFO L125 PetriNetUnfolderBase]: For 43990/44444 co-relation queries the response was YES. [2023-08-26 22:42:40,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122882 conditions, 40880 events. 24526/40880 cut-off events. For 43990/44444 co-relation queries the response was YES. Maximal size of possible extension queue 1879. Compared 358800 event pairs, 708 based on Foata normal form. 4074/41935 useless extension candidates. Maximal degree in co-relation 122865. Up to 25708 conditions per place. [2023-08-26 22:42:41,084 INFO L140 encePairwiseOnDemand]: 351/354 looper letters, 182 selfloop transitions, 4 changer transitions 0/198 dead transitions. [2023-08-26 22:42:41,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 198 transitions, 1251 flow [2023-08-26 22:42:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:42:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:42:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1092 transitions. [2023-08-26 22:42:41,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141242937853108 [2023-08-26 22:42:41,087 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1092 transitions. [2023-08-26 22:42:41,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1092 transitions. [2023-08-26 22:42:41,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:42:41,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1092 transitions. [2023-08-26 22:42:41,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 0 states have call successors, (0), 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 22:42:41,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 354.0) internal successors, (2478), 7 states have internal predecessors, (2478), 0 states have call successors, (0), 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 22:42:41,093 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 354.0) internal successors, (2478), 7 states have internal predecessors, (2478), 0 states have call successors, (0), 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 22:42:41,093 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 424 flow. Second operand 6 states and 1092 transitions. [2023-08-26 22:42:41,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 198 transitions, 1251 flow [2023-08-26 22:42:41,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 198 transitions, 1244 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-26 22:42:41,115 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 382 flow [2023-08-26 22:42:41,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2023-08-26 22:42:41,116 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -3 predicate places. [2023-08-26 22:42:41,116 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 382 flow [2023-08-26 22:42:41,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 163.42857142857142) internal successors, (1144), 7 states have internal predecessors, (1144), 0 states have call successors, (0), 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 22:42:41,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:42:41,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:42:41,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 22:42:41,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-26 22:42:41,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:42:41,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:42:41,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1442339247, now seen corresponding path program 1 times [2023-08-26 22:42:41,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:42:41,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275555867] [2023-08-26 22:42:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:42:41,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:42:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:42:41,382 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 22:42:41,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:42:41,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275555867] [2023-08-26 22:42:41,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275555867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:42:41,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:42:41,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:42:41,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519846670] [2023-08-26 22:42:41,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:42:41,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:42:41,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:42:41,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:42:41,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:42:41,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 354 [2023-08-26 22:42:41,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 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 22:42:41,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:42:41,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 354 [2023-08-26 22:42:41,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:42:43,920 INFO L124 PetriNetUnfolderBase]: 29348/44215 cut-off events. [2023-08-26 22:42:43,921 INFO L125 PetriNetUnfolderBase]: For 49211/49718 co-relation queries the response was YES. [2023-08-26 22:42:43,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133875 conditions, 44215 events. 29348/44215 cut-off events. For 49211/49718 co-relation queries the response was YES. Maximal size of possible extension queue 1931. Compared 336674 event pairs, 5368 based on Foata normal form. 141/41620 useless extension candidates. Maximal degree in co-relation 133857. Up to 26473 conditions per place. [2023-08-26 22:42:44,126 INFO L140 encePairwiseOnDemand]: 335/354 looper letters, 169 selfloop transitions, 37 changer transitions 0/214 dead transitions. [2023-08-26 22:42:44,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 214 transitions, 1348 flow [2023-08-26 22:42:44,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:42:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:42:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1219 transitions. [2023-08-26 22:42:44,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49192897497982246 [2023-08-26 22:42:44,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1219 transitions. [2023-08-26 22:42:44,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1219 transitions. [2023-08-26 22:42:44,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:42:44,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1219 transitions. [2023-08-26 22:42:44,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 174.14285714285714) internal successors, (1219), 7 states have internal predecessors, (1219), 0 states have call successors, (0), 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 22:42:44,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 354.0) internal successors, (2832), 8 states have internal predecessors, (2832), 0 states have call successors, (0), 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 22:42:44,137 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 354.0) internal successors, (2832), 8 states have internal predecessors, (2832), 0 states have call successors, (0), 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 22:42:44,137 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 382 flow. Second operand 7 states and 1219 transitions. [2023-08-26 22:42:44,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 214 transitions, 1348 flow [2023-08-26 22:42:44,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 214 transitions, 1313 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-26 22:42:44,147 INFO L231 Difference]: Finished difference. Result has 80 places, 108 transitions, 679 flow [2023-08-26 22:42:44,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=679, PETRI_PLACES=80, PETRI_TRANSITIONS=108} [2023-08-26 22:42:44,147 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2023-08-26 22:42:44,147 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 108 transitions, 679 flow [2023-08-26 22:42:44,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 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 22:42:44,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:42:44,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:42:44,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 22:42:44,148 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:42:44,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:42:44,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1442339248, now seen corresponding path program 1 times [2023-08-26 22:42:44,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:42:44,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23847301] [2023-08-26 22:42:44,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:42:44,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:42:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:42:44,189 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 22:42:44,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:42:44,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23847301] [2023-08-26 22:42:44,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23847301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:42:44,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:42:44,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:42:44,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624763866] [2023-08-26 22:42:44,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:42:44,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:42:44,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:42:44,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:42:44,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:42:44,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 354 [2023-08-26 22:42:44,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 108 transitions, 679 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 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 22:42:44,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:42:44,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 354 [2023-08-26 22:42:44,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:42:47,117 INFO L124 PetriNetUnfolderBase]: 29504/45337 cut-off events. [2023-08-26 22:42:47,117 INFO L125 PetriNetUnfolderBase]: For 85483/86467 co-relation queries the response was YES. [2023-08-26 22:42:47,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148631 conditions, 45337 events. 29504/45337 cut-off events. For 85483/86467 co-relation queries the response was YES. Maximal size of possible extension queue 2041. Compared 359208 event pairs, 7089 based on Foata normal form. 1440/46729 useless extension candidates. Maximal degree in co-relation 148611. Up to 27429 conditions per place. [2023-08-26 22:42:47,344 INFO L140 encePairwiseOnDemand]: 335/354 looper letters, 191 selfloop transitions, 51 changer transitions 0/250 dead transitions. [2023-08-26 22:42:47,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 250 transitions, 1871 flow [2023-08-26 22:42:47,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:42:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:42:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1074 transitions. [2023-08-26 22:42:47,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056497175141242 [2023-08-26 22:42:47,347 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1074 transitions. [2023-08-26 22:42:47,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1074 transitions. [2023-08-26 22:42:47,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:42:47,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1074 transitions. [2023-08-26 22:42:47,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 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 22:42:47,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 354.0) internal successors, (2478), 7 states have internal predecessors, (2478), 0 states have call successors, (0), 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 22:42:47,353 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 354.0) internal successors, (2478), 7 states have internal predecessors, (2478), 0 states have call successors, (0), 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 22:42:47,353 INFO L175 Difference]: Start difference. First operand has 80 places, 108 transitions, 679 flow. Second operand 6 states and 1074 transitions. [2023-08-26 22:42:47,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 250 transitions, 1871 flow [2023-08-26 22:42:47,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 250 transitions, 1871 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:42:47,594 INFO L231 Difference]: Finished difference. Result has 88 places, 138 transitions, 1131 flow [2023-08-26 22:42:47,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1131, PETRI_PLACES=88, PETRI_TRANSITIONS=138} [2023-08-26 22:42:47,594 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2023-08-26 22:42:47,594 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 138 transitions, 1131 flow [2023-08-26 22:42:47,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 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 22:42:47,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:42:47,595 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 22:42:47,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 22:42:47,595 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:42:47,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:42:47,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1263333251, now seen corresponding path program 1 times [2023-08-26 22:42:47,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:42:47,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351654738] [2023-08-26 22:42:47,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:42:47,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:42:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:42:47,613 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:42:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:42:47,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:42:47,628 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:42:47,628 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-26 22:42:47,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-26 22:42:47,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-26 22:42:47,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-26 22:42:47,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (17 of 22 remaining) [2023-08-26 22:42:47,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-26 22:42:47,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-26 22:42:47,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-26 22:42:47,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-26 22:42:47,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-26 22:42:47,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-26 22:42:47,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-26 22:42:47,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2023-08-26 22:42:47,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2023-08-26 22:42:47,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-26 22:42:47,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-26 22:42:47,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-26 22:42:47,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-26 22:42:47,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-26 22:42:47,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-26 22:42:47,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-26 22:42:47,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-26 22:42:47,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 22:42:47,631 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:42:47,632 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:42:47,632 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 22:42:47,658 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 22:42:47,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 239 transitions, 522 flow [2023-08-26 22:42:47,928 INFO L124 PetriNetUnfolderBase]: 96/688 cut-off events. [2023-08-26 22:42:47,928 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:42:47,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 688 events. 96/688 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2761 event pairs, 6 based on Foata normal form. 0/533 useless extension candidates. Maximal degree in co-relation 465. Up to 32 conditions per place. [2023-08-26 22:42:47,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 239 transitions, 522 flow [2023-08-26 22:42:47,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 239 transitions, 522 flow [2023-08-26 22:42:47,936 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:42:47,937 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 239 transitions, 522 flow [2023-08-26 22:42:47,937 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 239 transitions, 522 flow [2023-08-26 22:42:47,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 239 transitions, 522 flow [2023-08-26 22:42:47,992 INFO L124 PetriNetUnfolderBase]: 96/688 cut-off events. [2023-08-26 22:42:47,992 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:42:47,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 688 events. 96/688 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2761 event pairs, 6 based on Foata normal form. 0/533 useless extension candidates. Maximal degree in co-relation 465. Up to 32 conditions per place. [2023-08-26 22:42:48,010 INFO L119 LiptonReduction]: Number of co-enabled transitions 34416 [2023-08-26 22:42:50,706 INFO L134 LiptonReduction]: Checked pairs total: 91249 [2023-08-26 22:42:50,707 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-08-26 22:42:50,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:42:50,708 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;@19c7bdc9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:42:50,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-26 22:42:50,710 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:42:50,710 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-26 22:42:50,710 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:42:50,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:42:50,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:42:50,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-26 22:42:50,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:42:50,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1586583443, now seen corresponding path program 1 times [2023-08-26 22:42:50,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:42:50,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737892706] [2023-08-26 22:42:50,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:42:50,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:42:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:42:50,737 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 22:42:50,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:42:50,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737892706] [2023-08-26 22:42:50,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737892706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:42:50,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:42:50,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:42:50,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152417068] [2023-08-26 22:42:50,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:42:50,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:42:50,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:42:50,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:42:50,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:42:50,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 416 [2023-08-26 22:42:50,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 117 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 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 22:42:50,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:42:50,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 416 [2023-08-26 22:42:50,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand