/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_71-funloop_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:44:17,398 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:44:17,483 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 22:44:17,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:44:17,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:44:17,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:44:17,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:44:17,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:44:17,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:44:17,524 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:44:17,525 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:44:17,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:44:17,525 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:44:17,526 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:44:17,526 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:44:17,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:44:17,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:44:17,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:44:17,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:44:17,528 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:44:17,528 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:44:17,529 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:44:17,529 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:44:17,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:44:17,530 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:44:17,530 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:44:17,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:44:17,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:44:17,530 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:44:17,531 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:44:17,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:44:17,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:44:17,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:44:17,532 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:44:17,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:44:17,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:44:17,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:44:17,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:44:17,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:44:17,877 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:44:17,877 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:44:17,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_71-funloop_racing.i [2023-08-26 22:44:19,011 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:44:19,309 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:44:19,309 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_71-funloop_racing.i [2023-08-26 22:44:19,333 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a25f459/779e2f3dfbe44704a3791d779aa3bd15/FLAG2f8b645a1 [2023-08-26 22:44:19,349 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a25f459/779e2f3dfbe44704a3791d779aa3bd15 [2023-08-26 22:44:19,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:44:19,355 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:44:19,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:44:19,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:44:19,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:44:19,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:44:19" (1/1) ... [2023-08-26 22:44:19,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13aa68c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19, skipping insertion in model container [2023-08-26 22:44:19,362 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:44:19" (1/1) ... [2023-08-26 22:44:19,420 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:44:19,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:44:19,820 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:44:19,840 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:44:19,841 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:44:19,848 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 22:44:19,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:44:19,930 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:44:19,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19 WrapperNode [2023-08-26 22:44:19,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:44:19,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:44:19,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:44:19,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:44:19,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19" (1/1) ... [2023-08-26 22:44:19,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19" (1/1) ... [2023-08-26 22:44:19,991 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 281 [2023-08-26 22:44:19,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:44:19,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:44:19,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:44:19,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:44:20,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19" (1/1) ... [2023-08-26 22:44:20,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19" (1/1) ... [2023-08-26 22:44:20,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19" (1/1) ... [2023-08-26 22:44:20,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19" (1/1) ... [2023-08-26 22:44:20,013 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19" (1/1) ... [2023-08-26 22:44:20,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19" (1/1) ... [2023-08-26 22:44:20,020 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19" (1/1) ... [2023-08-26 22:44:20,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19" (1/1) ... [2023-08-26 22:44:20,025 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:44:20,026 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:44:20,026 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:44:20,026 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:44:20,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19" (1/1) ... [2023-08-26 22:44:20,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:44:20,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:44:20,055 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 22:44:20,069 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 22:44:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:44:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:44:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:44:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:44:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:44:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:44:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:44:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:44:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:44:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:44:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:44:20,099 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 22:44:20,215 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:44:20,217 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:44:20,619 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:44:20,628 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:44:20,629 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-08-26 22:44:20,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:44:20 BoogieIcfgContainer [2023-08-26 22:44:20,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:44:20,632 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:44:20,632 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:44:20,635 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:44:20,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:44:19" (1/3) ... [2023-08-26 22:44:20,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f599e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:44:20, skipping insertion in model container [2023-08-26 22:44:20,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:44:19" (2/3) ... [2023-08-26 22:44:20,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f599e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:44:20, skipping insertion in model container [2023-08-26 22:44:20,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:44:20" (3/3) ... [2023-08-26 22:44:20,638 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2023-08-26 22:44:20,652 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:44:20,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-08-26 22:44:20,653 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:44:20,742 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:44:20,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 302 transitions, 612 flow [2023-08-26 22:44:20,942 INFO L124 PetriNetUnfolderBase]: 78/464 cut-off events. [2023-08-26 22:44:20,942 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:44:20,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 464 events. 78/464 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2229 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 256. Up to 8 conditions per place. [2023-08-26 22:44:20,955 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 302 transitions, 612 flow [2023-08-26 22:44:20,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 299 transitions, 606 flow [2023-08-26 22:44:20,971 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:44:20,991 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 299 transitions, 606 flow [2023-08-26 22:44:20,995 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 299 transitions, 606 flow [2023-08-26 22:44:20,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 299 transitions, 606 flow [2023-08-26 22:44:21,060 INFO L124 PetriNetUnfolderBase]: 77/461 cut-off events. [2023-08-26 22:44:21,060 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:44:21,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 461 events. 77/461 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2205 event pairs, 0 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 256. Up to 8 conditions per place. [2023-08-26 22:44:21,078 INFO L119 LiptonReduction]: Number of co-enabled transitions 29240 [2023-08-26 22:44:25,035 INFO L134 LiptonReduction]: Checked pairs total: 51295 [2023-08-26 22:44:25,035 INFO L136 LiptonReduction]: Total number of compositions: 274 [2023-08-26 22:44:25,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:44:25,067 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;@1169f37c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:44:25,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-26 22:44:25,069 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:44:25,069 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 22:44:25,069 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:44:25,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:44:25,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 22:44:25,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-26 22:44:25,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:44:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash 37717, now seen corresponding path program 1 times [2023-08-26 22:44:25,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:44:25,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649911580] [2023-08-26 22:44:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:44:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:25,342 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 22:44:25,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:44:25,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649911580] [2023-08-26 22:44:25,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649911580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:44:25,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:44:25,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:44:25,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826658450] [2023-08-26 22:44:25,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:44:25,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:44:25,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:44:25,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:44:25,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:44:25,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 576 [2023-08-26 22:44:25,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 123 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 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 22:44:25,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:44:25,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 576 [2023-08-26 22:44:25,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:44:25,719 INFO L124 PetriNetUnfolderBase]: 1177/2425 cut-off events. [2023-08-26 22:44:25,720 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:44:25,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4648 conditions, 2425 events. 1177/2425 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16160 event pairs, 1012 based on Foata normal form. 279/1875 useless extension candidates. Maximal degree in co-relation 4525. Up to 2215 conditions per place. [2023-08-26 22:44:25,734 INFO L140 encePairwiseOnDemand]: 539/576 looper letters, 77 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-08-26 22:44:25,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 91 transitions, 348 flow [2023-08-26 22:44:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:44:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:44:25,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 859 transitions. [2023-08-26 22:44:25,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49710648148148145 [2023-08-26 22:44:25,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 859 transitions. [2023-08-26 22:44:25,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 859 transitions. [2023-08-26 22:44:25,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:44:25,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 859 transitions. [2023-08-26 22:44:25,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 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 22:44:25,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 576.0) internal successors, (2304), 4 states have internal predecessors, (2304), 0 states have call successors, (0), 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 22:44:25,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 576.0) internal successors, (2304), 4 states have internal predecessors, (2304), 0 states have call successors, (0), 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 22:44:25,767 INFO L175 Difference]: Start difference. First operand has 88 places, 123 transitions, 254 flow. Second operand 3 states and 859 transitions. [2023-08-26 22:44:25,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 91 transitions, 348 flow [2023-08-26 22:44:25,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 91 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:44:25,773 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 202 flow [2023-08-26 22:44:25,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=90, PETRI_TRANSITIONS=91} [2023-08-26 22:44:25,778 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 2 predicate places. [2023-08-26 22:44:25,778 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 202 flow [2023-08-26 22:44:25,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 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 22:44:25,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:44:25,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 22:44:25,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:44:25,779 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-26 22:44:25,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:44:25,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1172410, now seen corresponding path program 1 times [2023-08-26 22:44:25,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:44:25,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938624834] [2023-08-26 22:44:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:25,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:44:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:25,835 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 22:44:25,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:44:25,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938624834] [2023-08-26 22:44:25,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938624834] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:44:25,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649900178] [2023-08-26 22:44:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:25,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:44:25,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:44:25,839 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 22:44:25,885 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 22:44:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:25,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 22:44:25,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:44:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:44:25,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:44:25,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649900178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:44:25,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:44:25,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 22:44:25,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722892857] [2023-08-26 22:44:25,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:44:25,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:44:25,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:44:25,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:44:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:44:26,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 576 [2023-08-26 22:44:26,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 91 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 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 22:44:26,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:44:26,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 576 [2023-08-26 22:44:26,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:44:26,326 INFO L124 PetriNetUnfolderBase]: 1177/2424 cut-off events. [2023-08-26 22:44:26,326 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:44:26,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4653 conditions, 2424 events. 1177/2424 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16168 event pairs, 1012 based on Foata normal form. 0/1596 useless extension candidates. Maximal degree in co-relation 4641. Up to 2212 conditions per place. [2023-08-26 22:44:26,340 INFO L140 encePairwiseOnDemand]: 572/576 looper letters, 75 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2023-08-26 22:44:26,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 354 flow [2023-08-26 22:44:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:44:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:44:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1071 transitions. [2023-08-26 22:44:26,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2023-08-26 22:44:26,345 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1071 transitions. [2023-08-26 22:44:26,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1071 transitions. [2023-08-26 22:44:26,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:44:26,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1071 transitions. [2023-08-26 22:44:26,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 267.75) internal successors, (1071), 4 states have internal predecessors, (1071), 0 states have call successors, (0), 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 22:44:26,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 576.0) internal successors, (2880), 5 states have internal predecessors, (2880), 0 states have call successors, (0), 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 22:44:26,356 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 576.0) internal successors, (2880), 5 states have internal predecessors, (2880), 0 states have call successors, (0), 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 22:44:26,356 INFO L175 Difference]: Start difference. First operand has 90 places, 91 transitions, 202 flow. Second operand 4 states and 1071 transitions. [2023-08-26 22:44:26,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 354 flow [2023-08-26 22:44:26,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 350 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 22:44:26,364 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 200 flow [2023-08-26 22:44:26,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2023-08-26 22:44:26,370 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2023-08-26 22:44:26,371 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 200 flow [2023-08-26 22:44:26,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 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 22:44:26,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:44:26,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:44:26,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 22:44:26,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:44:26,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-26 22:44:26,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:44:26,581 INFO L85 PathProgramCache]: Analyzing trace with hash 569935725, now seen corresponding path program 1 times [2023-08-26 22:44:26,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:44:26,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638783415] [2023-08-26 22:44:26,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:26,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:44:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:26,660 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 22:44:26,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:44:26,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638783415] [2023-08-26 22:44:26,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638783415] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:44:26,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135051722] [2023-08-26 22:44:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:26,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:44:26,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:44:26,663 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 22:44:26,664 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 22:44:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:26,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:44:26,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:44:26,782 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 22:44:26,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:44:26,799 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 22:44:26,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135051722] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:44:26,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:44:26,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:44:26,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856235388] [2023-08-26 22:44:26,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:44:26,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:44:26,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:44:26,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:44:26,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:44:26,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 576 [2023-08-26 22:44:26,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 249.57142857142858) internal successors, (1747), 7 states have internal predecessors, (1747), 0 states have call successors, (0), 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 22:44:26,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:44:26,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 576 [2023-08-26 22:44:26,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:44:27,091 INFO L124 PetriNetUnfolderBase]: 1177/2427 cut-off events. [2023-08-26 22:44:27,092 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:44:27,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4663 conditions, 2427 events. 1177/2427 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16212 event pairs, 1012 based on Foata normal form. 3/1603 useless extension candidates. Maximal degree in co-relation 4635. Up to 2214 conditions per place. [2023-08-26 22:44:27,105 INFO L140 encePairwiseOnDemand]: 573/576 looper letters, 76 selfloop transitions, 5 changer transitions 0/93 dead transitions. [2023-08-26 22:44:27,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 93 transitions, 374 flow [2023-08-26 22:44:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:44:27,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:44:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1572 transitions. [2023-08-26 22:44:27,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2023-08-26 22:44:27,109 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1572 transitions. [2023-08-26 22:44:27,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1572 transitions. [2023-08-26 22:44:27,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:44:27,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1572 transitions. [2023-08-26 22:44:27,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 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 22:44:27,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 576.0) internal successors, (4032), 7 states have internal predecessors, (4032), 0 states have call successors, (0), 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 22:44:27,121 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 576.0) internal successors, (4032), 7 states have internal predecessors, (4032), 0 states have call successors, (0), 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 22:44:27,121 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 200 flow. Second operand 6 states and 1572 transitions. [2023-08-26 22:44:27,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 93 transitions, 374 flow [2023-08-26 22:44:27,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 93 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:44:27,126 INFO L231 Difference]: Finished difference. Result has 97 places, 93 transitions, 232 flow [2023-08-26 22:44:27,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=97, PETRI_TRANSITIONS=93} [2023-08-26 22:44:27,128 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 9 predicate places. [2023-08-26 22:44:27,128 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 93 transitions, 232 flow [2023-08-26 22:44:27,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 249.57142857142858) internal successors, (1747), 7 states have internal predecessors, (1747), 0 states have call successors, (0), 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 22:44:27,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:44:27,129 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-26 22:44:27,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 22:44:27,339 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,SelfDestructingSolverStorable2 [2023-08-26 22:44:27,340 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-26 22:44:27,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:44:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1907750066, now seen corresponding path program 2 times [2023-08-26 22:44:27,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:44:27,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700692443] [2023-08-26 22:44:27,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:27,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:44:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 22:44:27,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:44:27,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700692443] [2023-08-26 22:44:27,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700692443] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:44:27,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:44:27,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:44:27,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710520547] [2023-08-26 22:44:27,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:44:27,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:44:27,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:44:27,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:44:27,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:44:27,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 576 [2023-08-26 22:44:27,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 93 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 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 22:44:27,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:44:27,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 576 [2023-08-26 22:44:27,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:44:27,668 INFO L124 PetriNetUnfolderBase]: 1084/2270 cut-off events. [2023-08-26 22:44:27,668 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-26 22:44:27,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4405 conditions, 2270 events. 1084/2270 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 15995 event pairs, 0 based on Foata normal form. 0/1539 useless extension candidates. Maximal degree in co-relation 4370. Up to 2057 conditions per place. [2023-08-26 22:44:27,681 INFO L140 encePairwiseOnDemand]: 571/576 looper letters, 101 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-08-26 22:44:27,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 115 transitions, 482 flow [2023-08-26 22:44:27,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:44:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:44:27,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2023-08-26 22:44:27,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2023-08-26 22:44:27,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2023-08-26 22:44:27,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2023-08-26 22:44:27,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:44:27,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2023-08-26 22:44:27,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 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 22:44:27,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 576.0) internal successors, (2304), 4 states have internal predecessors, (2304), 0 states have call successors, (0), 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 22:44:27,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 576.0) internal successors, (2304), 4 states have internal predecessors, (2304), 0 states have call successors, (0), 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 22:44:27,690 INFO L175 Difference]: Start difference. First operand has 97 places, 93 transitions, 232 flow. Second operand 3 states and 846 transitions. [2023-08-26 22:44:27,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 115 transitions, 482 flow [2023-08-26 22:44:27,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 115 transitions, 468 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 22:44:27,694 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 222 flow [2023-08-26 22:44:27,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2023-08-26 22:44:27,695 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 9 predicate places. [2023-08-26 22:44:27,696 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 222 flow [2023-08-26 22:44:27,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 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 22:44:27,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:44:27,696 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-26 22:44:27,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:44:27,697 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-26 22:44:27,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:44:27,697 INFO L85 PathProgramCache]: Analyzing trace with hash -603115501, now seen corresponding path program 1 times [2023-08-26 22:44:27,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:44:27,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781888388] [2023-08-26 22:44:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:27,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:44:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:44:27,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:44:27,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781888388] [2023-08-26 22:44:27,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781888388] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:44:27,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037681992] [2023-08-26 22:44:27,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:27,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:44:27,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:44:27,813 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:44:27,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 22:44:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:27,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:44:27,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:44:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:44:27,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:44:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:44:27,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037681992] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:44:27,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:44:27,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 22:44:27,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291042112] [2023-08-26 22:44:27,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:44:27,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 22:44:27,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:44:27,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 22:44:27,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 22:44:27,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 576 [2023-08-26 22:44:27,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 222 flow. Second operand has 13 states, 13 states have (on average 249.30769230769232) internal successors, (3241), 13 states have internal predecessors, (3241), 0 states have call successors, (0), 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 22:44:27,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:44:27,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 576 [2023-08-26 22:44:27,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:44:28,415 INFO L124 PetriNetUnfolderBase]: 1126/2287 cut-off events. [2023-08-26 22:44:28,415 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2023-08-26 22:44:28,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4483 conditions, 2287 events. 1126/2287 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15071 event pairs, 968 based on Foata normal form. 6/1574 useless extension candidates. Maximal degree in co-relation 4429. Up to 2079 conditions per place. [2023-08-26 22:44:28,429 INFO L140 encePairwiseOnDemand]: 573/576 looper letters, 74 selfloop transitions, 11 changer transitions 0/97 dead transitions. [2023-08-26 22:44:28,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 97 transitions, 428 flow [2023-08-26 22:44:28,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 22:44:28,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 22:44:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3067 transitions. [2023-08-26 22:44:28,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4437210648148148 [2023-08-26 22:44:28,437 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3067 transitions. [2023-08-26 22:44:28,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3067 transitions. [2023-08-26 22:44:28,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:44:28,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3067 transitions. [2023-08-26 22:44:28,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 255.58333333333334) internal successors, (3067), 12 states have internal predecessors, (3067), 0 states have call successors, (0), 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 22:44:28,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 576.0) internal successors, (7488), 13 states have internal predecessors, (7488), 0 states have call successors, (0), 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 22:44:28,453 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 576.0) internal successors, (7488), 13 states have internal predecessors, (7488), 0 states have call successors, (0), 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 22:44:28,454 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 222 flow. Second operand 12 states and 3067 transitions. [2023-08-26 22:44:28,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 97 transitions, 428 flow [2023-08-26 22:44:28,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 97 transitions, 424 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:44:28,457 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 302 flow [2023-08-26 22:44:28,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=576, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=302, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2023-08-26 22:44:28,458 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 24 predicate places. [2023-08-26 22:44:28,458 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 302 flow [2023-08-26 22:44:28,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 249.30769230769232) internal successors, (3241), 13 states have internal predecessors, (3241), 0 states have call successors, (0), 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 22:44:28,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:44:28,459 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-26 22:44:28,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 22:44:28,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:44:28,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-26 22:44:28,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:44:28,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1394827725, now seen corresponding path program 2 times [2023-08-26 22:44:28,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:44:28,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551934747] [2023-08-26 22:44:28,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:28,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:44:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:44:28,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:44:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:44:28,731 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:44:28,731 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:44:28,732 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2023-08-26 22:44:28,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 33 remaining) [2023-08-26 22:44:28,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 33 remaining) [2023-08-26 22:44:28,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 33 remaining) [2023-08-26 22:44:28,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 33 remaining) [2023-08-26 22:44:28,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 33 remaining) [2023-08-26 22:44:28,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 33 remaining) [2023-08-26 22:44:28,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 33 remaining) [2023-08-26 22:44:28,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 33 remaining) [2023-08-26 22:44:28,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 33 remaining) [2023-08-26 22:44:28,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 33 remaining) [2023-08-26 22:44:28,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 33 remaining) [2023-08-26 22:44:28,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 33 remaining) [2023-08-26 22:44:28,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONASSERT (19 of 33 remaining) [2023-08-26 22:44:28,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 33 remaining) [2023-08-26 22:44:28,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 33 remaining) [2023-08-26 22:44:28,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 33 remaining) [2023-08-26 22:44:28,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 33 remaining) [2023-08-26 22:44:28,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONASSERT (14 of 33 remaining) [2023-08-26 22:44:28,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 33 remaining) [2023-08-26 22:44:28,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 33 remaining) [2023-08-26 22:44:28,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 33 remaining) [2023-08-26 22:44:28,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 33 remaining) [2023-08-26 22:44:28,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 33 remaining) [2023-08-26 22:44:28,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 33 remaining) [2023-08-26 22:44:28,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (7 of 33 remaining) [2023-08-26 22:44:28,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 33 remaining) [2023-08-26 22:44:28,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 33 remaining) [2023-08-26 22:44:28,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 33 remaining) [2023-08-26 22:44:28,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 33 remaining) [2023-08-26 22:44:28,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 33 remaining) [2023-08-26 22:44:28,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 33 remaining) [2023-08-26 22:44:28,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (0 of 33 remaining) [2023-08-26 22:44:28,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:44:28,739 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-08-26 22:44:28,741 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:44:28,741 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:44:28,778 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:44:28,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 389 transitions, 796 flow [2023-08-26 22:44:28,867 INFO L124 PetriNetUnfolderBase]: 126/750 cut-off events. [2023-08-26 22:44:28,867 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:44:28,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 750 events. 126/750 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4103 event pairs, 0 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 466. Up to 12 conditions per place. [2023-08-26 22:44:28,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 330 places, 389 transitions, 796 flow [2023-08-26 22:44:28,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 330 places, 389 transitions, 796 flow [2023-08-26 22:44:28,889 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:44:28,889 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 330 places, 389 transitions, 796 flow [2023-08-26 22:44:28,890 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 330 places, 389 transitions, 796 flow [2023-08-26 22:44:28,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 389 transitions, 796 flow [2023-08-26 22:44:28,958 INFO L124 PetriNetUnfolderBase]: 126/750 cut-off events. [2023-08-26 22:44:28,958 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:44:28,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 750 events. 126/750 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4103 event pairs, 0 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 466. Up to 12 conditions per place. [2023-08-26 22:44:29,000 INFO L119 LiptonReduction]: Number of co-enabled transitions 76160 [2023-08-26 22:44:33,238 INFO L134 LiptonReduction]: Checked pairs total: 134362 [2023-08-26 22:44:33,238 INFO L136 LiptonReduction]: Total number of compositions: 335 [2023-08-26 22:44:33,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:44:33,240 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;@1169f37c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:44:33,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-26 22:44:33,241 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:44:33,241 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 22:44:33,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:44:33,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:44:33,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 22:44:33,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 22:44:33,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:44:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash 63799, now seen corresponding path program 1 times [2023-08-26 22:44:33,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:44:33,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678310271] [2023-08-26 22:44:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:33,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:44:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:33,266 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 22:44:33,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:44:33,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678310271] [2023-08-26 22:44:33,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678310271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:44:33,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:44:33,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:44:33,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154588180] [2023-08-26 22:44:33,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:44:33,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:44:33,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:44:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:44:33,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:44:33,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 724 [2023-08-26 22:44:33,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 165 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 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 22:44:33,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:44:33,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 724 [2023-08-26 22:44:33,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:44:38,551 INFO L124 PetriNetUnfolderBase]: 60569/91515 cut-off events. [2023-08-26 22:44:38,551 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2023-08-26 22:44:38,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179154 conditions, 91515 events. 60569/91515 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 2866. Compared 714372 event pairs, 54836 based on Foata normal form. 9653/68298 useless extension candidates. Maximal degree in co-relation 81150. Up to 87493 conditions per place. [2023-08-26 22:44:39,197 INFO L140 encePairwiseOnDemand]: 677/724 looper letters, 106 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-08-26 22:44:39,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 123 transitions, 480 flow [2023-08-26 22:44:39,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:44:39,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:44:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1111 transitions. [2023-08-26 22:44:39,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115101289134438 [2023-08-26 22:44:39,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1111 transitions. [2023-08-26 22:44:39,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1111 transitions. [2023-08-26 22:44:39,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:44:39,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1111 transitions. [2023-08-26 22:44:39,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.3333333333333) internal successors, (1111), 3 states have internal predecessors, (1111), 0 states have call successors, (0), 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 22:44:39,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 724.0) internal successors, (2896), 4 states have internal predecessors, (2896), 0 states have call successors, (0), 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 22:44:39,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 724.0) internal successors, (2896), 4 states have internal predecessors, (2896), 0 states have call successors, (0), 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 22:44:39,209 INFO L175 Difference]: Start difference. First operand has 118 places, 165 transitions, 348 flow. Second operand 3 states and 1111 transitions. [2023-08-26 22:44:39,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 123 transitions, 480 flow [2023-08-26 22:44:39,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 123 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:44:39,213 INFO L231 Difference]: Finished difference. Result has 120 places, 123 transitions, 276 flow [2023-08-26 22:44:39,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=724, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=120, PETRI_TRANSITIONS=123} [2023-08-26 22:44:39,215 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2023-08-26 22:44:39,215 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 123 transitions, 276 flow [2023-08-26 22:44:39,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 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 22:44:39,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:44:39,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 22:44:39,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:44:39,216 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 22:44:39,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:44:39,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1981676, now seen corresponding path program 1 times [2023-08-26 22:44:39,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:44:39,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981608430] [2023-08-26 22:44:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:39,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:44:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:39,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:44:39,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:44:39,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981608430] [2023-08-26 22:44:39,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981608430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:44:39,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:44:39,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:44:39,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374012940] [2023-08-26 22:44:39,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:44:39,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:44:39,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:44:39,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:44:39,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:44:39,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 724 [2023-08-26 22:44:39,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 123 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 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 22:44:39,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:44:39,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 724 [2023-08-26 22:44:39,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:44:44,247 INFO L124 PetriNetUnfolderBase]: 60569/91514 cut-off events. [2023-08-26 22:44:44,247 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2023-08-26 22:44:44,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179159 conditions, 91514 events. 60569/91514 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 2866. Compared 714455 event pairs, 54836 based on Foata normal form. 0/58645 useless extension candidates. Maximal degree in co-relation 179146. Up to 87490 conditions per place. [2023-08-26 22:44:44,712 INFO L140 encePairwiseOnDemand]: 721/724 looper letters, 105 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2023-08-26 22:44:44,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 122 transitions, 486 flow [2023-08-26 22:44:44,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:44:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:44:44,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1064 transitions. [2023-08-26 22:44:44,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48987108655616945 [2023-08-26 22:44:44,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1064 transitions. [2023-08-26 22:44:44,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1064 transitions. [2023-08-26 22:44:44,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:44:44,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1064 transitions. [2023-08-26 22:44:44,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 354.6666666666667) internal successors, (1064), 3 states have internal predecessors, (1064), 0 states have call successors, (0), 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 22:44:44,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 724.0) internal successors, (2896), 4 states have internal predecessors, (2896), 0 states have call successors, (0), 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 22:44:44,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 724.0) internal successors, (2896), 4 states have internal predecessors, (2896), 0 states have call successors, (0), 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 22:44:44,725 INFO L175 Difference]: Start difference. First operand has 120 places, 123 transitions, 276 flow. Second operand 3 states and 1064 transitions. [2023-08-26 22:44:44,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 122 transitions, 486 flow [2023-08-26 22:44:44,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 122 transitions, 482 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 22:44:44,729 INFO L231 Difference]: Finished difference. Result has 120 places, 122 transitions, 272 flow [2023-08-26 22:44:44,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=724, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=120, PETRI_TRANSITIONS=122} [2023-08-26 22:44:44,730 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2023-08-26 22:44:44,730 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 122 transitions, 272 flow [2023-08-26 22:44:44,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 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 22:44:44,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:44:44,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:44:44,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:44:44,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 22:44:44,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:44:44,731 INFO L85 PathProgramCache]: Analyzing trace with hash 543765506, now seen corresponding path program 1 times [2023-08-26 22:44:44,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:44:44,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420263063] [2023-08-26 22:44:44,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:44,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:44:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:44,776 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 22:44:44,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:44:44,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420263063] [2023-08-26 22:44:44,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420263063] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:44:44,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430961491] [2023-08-26 22:44:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:44,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:44:44,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:44:44,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:44:44,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 22:44:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:44,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:44:44,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:44:44,858 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 22:44:44,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:44:44,872 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 22:44:44,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430961491] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:44:44,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:44:44,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:44:44,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380913994] [2023-08-26 22:44:44,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:44:44,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:44:44,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:44:44,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:44:44,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:44:44,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 724 [2023-08-26 22:44:44,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 122 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 320.57142857142856) internal successors, (2244), 7 states have internal predecessors, (2244), 0 states have call successors, (0), 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 22:44:44,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:44:44,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 724 [2023-08-26 22:44:44,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:44:49,760 INFO L124 PetriNetUnfolderBase]: 60569/91517 cut-off events. [2023-08-26 22:44:49,760 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2023-08-26 22:44:49,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179168 conditions, 91517 events. 60569/91517 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 2866. Compared 714417 event pairs, 54836 based on Foata normal form. 3/58652 useless extension candidates. Maximal degree in co-relation 179140. Up to 87492 conditions per place. [2023-08-26 22:44:50,151 INFO L140 encePairwiseOnDemand]: 721/724 looper letters, 105 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2023-08-26 22:44:50,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 125 transitions, 504 flow [2023-08-26 22:44:50,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:44:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:44:50,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2027 transitions. [2023-08-26 22:44:50,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666206261510129 [2023-08-26 22:44:50,156 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2027 transitions. [2023-08-26 22:44:50,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2027 transitions. [2023-08-26 22:44:50,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:44:50,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2027 transitions. [2023-08-26 22:44:50,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 337.8333333333333) internal successors, (2027), 6 states have internal predecessors, (2027), 0 states have call successors, (0), 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 22:44:50,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 724.0) internal successors, (5068), 7 states have internal predecessors, (5068), 0 states have call successors, (0), 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 22:44:50,168 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 724.0) internal successors, (5068), 7 states have internal predecessors, (5068), 0 states have call successors, (0), 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 22:44:50,168 INFO L175 Difference]: Start difference. First operand has 120 places, 122 transitions, 272 flow. Second operand 6 states and 2027 transitions. [2023-08-26 22:44:50,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 125 transitions, 504 flow [2023-08-26 22:44:50,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 125 transitions, 500 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:44:50,171 INFO L231 Difference]: Finished difference. Result has 126 places, 125 transitions, 304 flow [2023-08-26 22:44:50,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=724, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=126, PETRI_TRANSITIONS=125} [2023-08-26 22:44:50,172 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, 8 predicate places. [2023-08-26 22:44:50,172 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 125 transitions, 304 flow [2023-08-26 22:44:50,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 320.57142857142856) internal successors, (2244), 7 states have internal predecessors, (2244), 0 states have call successors, (0), 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 22:44:50,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:44:50,173 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-26 22:44:50,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 22:44:50,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:44:50,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 22:44:50,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:44:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash 148371469, now seen corresponding path program 2 times [2023-08-26 22:44:50,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:44:50,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140828447] [2023-08-26 22:44:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:50,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:44:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 22:44:50,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:44:50,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140828447] [2023-08-26 22:44:50,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140828447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:44:50,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:44:50,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:44:50,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260551786] [2023-08-26 22:44:50,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:44:50,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:44:50,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:44:50,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:44:50,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:44:50,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 724 [2023-08-26 22:44:50,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 125 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 0 states have call successors, (0), 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 22:44:50,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:44:50,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 724 [2023-08-26 22:44:50,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:44:55,211 INFO L124 PetriNetUnfolderBase]: 60129/91507 cut-off events. [2023-08-26 22:44:55,212 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-08-26 22:44:55,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179066 conditions, 91507 events. 60129/91507 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 2870. Compared 727193 event pairs, 26588 based on Foata normal form. 0/58568 useless extension candidates. Maximal degree in co-relation 179031. Up to 87327 conditions per place. [2023-08-26 22:44:55,633 INFO L140 encePairwiseOnDemand]: 719/724 looper letters, 135 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2023-08-26 22:44:55,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 152 transitions, 632 flow [2023-08-26 22:44:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:44:55,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:44:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1093 transitions. [2023-08-26 22:44:55,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032228360957642 [2023-08-26 22:44:55,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1093 transitions. [2023-08-26 22:44:55,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1093 transitions. [2023-08-26 22:44:55,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:44:55,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1093 transitions. [2023-08-26 22:44:55,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 364.3333333333333) internal successors, (1093), 3 states have internal predecessors, (1093), 0 states have call successors, (0), 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 22:44:55,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 724.0) internal successors, (2896), 4 states have internal predecessors, (2896), 0 states have call successors, (0), 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 22:44:55,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 724.0) internal successors, (2896), 4 states have internal predecessors, (2896), 0 states have call successors, (0), 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 22:44:55,643 INFO L175 Difference]: Start difference. First operand has 126 places, 125 transitions, 304 flow. Second operand 3 states and 1093 transitions. [2023-08-26 22:44:55,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 152 transitions, 632 flow [2023-08-26 22:44:55,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 152 transitions, 618 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 22:44:55,647 INFO L231 Difference]: Finished difference. Result has 128 places, 126 transitions, 306 flow [2023-08-26 22:44:55,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=724, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=128, PETRI_TRANSITIONS=126} [2023-08-26 22:44:55,647 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, 10 predicate places. [2023-08-26 22:44:55,648 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 126 transitions, 306 flow [2023-08-26 22:44:55,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 0 states have call successors, (0), 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 22:44:55,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:44:55,648 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:44:55,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 22:44:55,649 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 22:44:55,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:44:55,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1166757136, now seen corresponding path program 1 times [2023-08-26 22:44:55,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:44:55,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750706841] [2023-08-26 22:44:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:55,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:44:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:44:55,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:44:55,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750706841] [2023-08-26 22:44:55,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750706841] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:44:55,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625662496] [2023-08-26 22:44:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:55,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:44:55,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:44:55,727 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:44:55,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 22:44:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:55,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:44:55,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:44:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:44:55,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:44:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:44:55,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625662496] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:44:55,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:44:55,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 22:44:55,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706416361] [2023-08-26 22:44:55,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:44:55,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 22:44:55,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:44:55,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 22:44:55,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 22:44:55,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 724 [2023-08-26 22:44:55,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 126 transitions, 306 flow. Second operand has 13 states, 13 states have (on average 320.61538461538464) internal successors, (4168), 13 states have internal predecessors, (4168), 0 states have call successors, (0), 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 22:44:55,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:44:55,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 724 [2023-08-26 22:44:55,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:45:01,213 INFO L124 PetriNetUnfolderBase]: 60943/91616 cut-off events. [2023-08-26 22:45:01,214 INFO L125 PetriNetUnfolderBase]: For 1481/1481 co-relation queries the response was YES. [2023-08-26 22:45:01,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181628 conditions, 91616 events. 60943/91616 cut-off events. For 1481/1481 co-relation queries the response was YES. Maximal size of possible extension queue 2876. Compared 709074 event pairs, 54788 based on Foata normal form. 6/59355 useless extension candidates. Maximal degree in co-relation 181574. Up to 87351 conditions per place. [2023-08-26 22:45:01,744 INFO L140 encePairwiseOnDemand]: 721/724 looper letters, 106 selfloop transitions, 11 changer transitions 0/132 dead transitions. [2023-08-26 22:45:01,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 132 transitions, 576 flow [2023-08-26 22:45:01,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 22:45:01,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 22:45:01,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3950 transitions. [2023-08-26 22:45:01,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4546500920810313 [2023-08-26 22:45:01,753 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3950 transitions. [2023-08-26 22:45:01,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3950 transitions. [2023-08-26 22:45:01,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:45:01,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3950 transitions. [2023-08-26 22:45:01,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 329.1666666666667) internal successors, (3950), 12 states have internal predecessors, (3950), 0 states have call successors, (0), 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 22:45:01,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 724.0) internal successors, (9412), 13 states have internal predecessors, (9412), 0 states have call successors, (0), 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 22:45:01,773 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 724.0) internal successors, (9412), 13 states have internal predecessors, (9412), 0 states have call successors, (0), 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 22:45:01,773 INFO L175 Difference]: Start difference. First operand has 128 places, 126 transitions, 306 flow. Second operand 12 states and 3950 transitions. [2023-08-26 22:45:01,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 132 transitions, 576 flow [2023-08-26 22:45:01,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 132 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:45:01,778 INFO L231 Difference]: Finished difference. Result has 144 places, 132 transitions, 388 flow [2023-08-26 22:45:01,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=724, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=388, PETRI_PLACES=144, PETRI_TRANSITIONS=132} [2023-08-26 22:45:01,779 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2023-08-26 22:45:01,779 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 132 transitions, 388 flow [2023-08-26 22:45:01,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 320.61538461538464) internal successors, (4168), 13 states have internal predecessors, (4168), 0 states have call successors, (0), 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 22:45:01,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:45:01,780 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:45:01,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 22:45:01,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-26 22:45:01,985 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 22:45:01,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:45:01,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1680788176, now seen corresponding path program 2 times [2023-08-26 22:45:01,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:45:01,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702166042] [2023-08-26 22:45:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:45:01,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:45:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:45:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:45:02,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:45:02,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702166042] [2023-08-26 22:45:02,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702166042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:45:02,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:45:02,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 22:45:02,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991039548] [2023-08-26 22:45:02,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:45:02,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:45:02,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:45:02,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:45:02,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:45:02,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 724 [2023-08-26 22:45:02,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 132 transitions, 388 flow. Second operand has 6 states, 6 states have (on average 280.6666666666667) internal successors, (1684), 6 states have internal predecessors, (1684), 0 states have call successors, (0), 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 22:45:02,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:45:02,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 724 [2023-08-26 22:45:02,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:45:12,259 INFO L124 PetriNetUnfolderBase]: 106725/161952 cut-off events. [2023-08-26 22:45:12,259 INFO L125 PetriNetUnfolderBase]: For 2953/2953 co-relation queries the response was YES. [2023-08-26 22:45:12,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324262 conditions, 161952 events. 106725/161952 cut-off events. For 2953/2953 co-relation queries the response was YES. Maximal size of possible extension queue 4762. Compared 1384346 event pairs, 21319 based on Foata normal form. 0/104665 useless extension candidates. Maximal degree in co-relation 324184. Up to 89972 conditions per place. [2023-08-26 22:45:13,505 INFO L140 encePairwiseOnDemand]: 705/724 looper letters, 380 selfloop transitions, 30 changer transitions 0/425 dead transitions. [2023-08-26 22:45:13,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 425 transitions, 1857 flow [2023-08-26 22:45:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:45:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:45:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2361 transitions. [2023-08-26 22:45:13,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658642462509866 [2023-08-26 22:45:13,511 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2361 transitions. [2023-08-26 22:45:13,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2361 transitions. [2023-08-26 22:45:13,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:45:13,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2361 transitions. [2023-08-26 22:45:13,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 337.2857142857143) internal successors, (2361), 7 states have internal predecessors, (2361), 0 states have call successors, (0), 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 22:45:13,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 724.0) internal successors, (5792), 8 states have internal predecessors, (5792), 0 states have call successors, (0), 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 22:45:13,523 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 724.0) internal successors, (5792), 8 states have internal predecessors, (5792), 0 states have call successors, (0), 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 22:45:13,523 INFO L175 Difference]: Start difference. First operand has 144 places, 132 transitions, 388 flow. Second operand 7 states and 2361 transitions. [2023-08-26 22:45:13,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 425 transitions, 1857 flow [2023-08-26 22:45:13,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 425 transitions, 1809 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-26 22:45:13,532 INFO L231 Difference]: Finished difference. Result has 150 places, 161 transitions, 552 flow [2023-08-26 22:45:13,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=724, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=552, PETRI_PLACES=150, PETRI_TRANSITIONS=161} [2023-08-26 22:45:13,533 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, 32 predicate places. [2023-08-26 22:45:13,533 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 161 transitions, 552 flow [2023-08-26 22:45:13,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 280.6666666666667) internal successors, (1684), 6 states have internal predecessors, (1684), 0 states have call successors, (0), 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 22:45:13,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:45:13,534 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-26 22:45:13,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 22:45:13,534 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 22:45:13,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:45:13,534 INFO L85 PathProgramCache]: Analyzing trace with hash -449876906, now seen corresponding path program 1 times [2023-08-26 22:45:13,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:45:13,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395319972] [2023-08-26 22:45:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:45:13,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:45:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:45:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:45:13,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:45:13,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395319972] [2023-08-26 22:45:13,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395319972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:45:13,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:45:13,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:45:13,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629381006] [2023-08-26 22:45:13,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:45:13,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:45:13,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:45:13,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:45:13,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:45:13,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 724 [2023-08-26 22:45:13,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 161 transitions, 552 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 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 22:45:13,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:45:13,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 724 [2023-08-26 22:45:13,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:45:24,080 INFO L124 PetriNetUnfolderBase]: 105051/162361 cut-off events. [2023-08-26 22:45:24,080 INFO L125 PetriNetUnfolderBase]: For 39255/39255 co-relation queries the response was YES. [2023-08-26 22:45:24,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365379 conditions, 162361 events. 105051/162361 cut-off events. For 39255/39255 co-relation queries the response was YES. Maximal size of possible extension queue 4458. Compared 1438976 event pairs, 14021 based on Foata normal form. 0/116381 useless extension candidates. Maximal degree in co-relation 365319. Up to 140617 conditions per place. [2023-08-26 22:45:25,260 INFO L140 encePairwiseOnDemand]: 721/724 looper letters, 202 selfloop transitions, 2 changer transitions 0/219 dead transitions. [2023-08-26 22:45:25,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 219 transitions, 1132 flow [2023-08-26 22:45:25,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:45:25,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:45:25,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1112 transitions. [2023-08-26 22:45:25,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119705340699816 [2023-08-26 22:45:25,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1112 transitions. [2023-08-26 22:45:25,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1112 transitions. [2023-08-26 22:45:25,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:45:25,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1112 transitions. [2023-08-26 22:45:25,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.6666666666667) internal successors, (1112), 3 states have internal predecessors, (1112), 0 states have call successors, (0), 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 22:45:25,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 724.0) internal successors, (2896), 4 states have internal predecessors, (2896), 0 states have call successors, (0), 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 22:45:25,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 724.0) internal successors, (2896), 4 states have internal predecessors, (2896), 0 states have call successors, (0), 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 22:45:25,268 INFO L175 Difference]: Start difference. First operand has 150 places, 161 transitions, 552 flow. Second operand 3 states and 1112 transitions. [2023-08-26 22:45:25,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 219 transitions, 1132 flow [2023-08-26 22:45:25,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 219 transitions, 1132 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:45:25,413 INFO L231 Difference]: Finished difference. Result has 151 places, 160 transitions, 552 flow [2023-08-26 22:45:25,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=724, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=552, PETRI_PLACES=151, PETRI_TRANSITIONS=160} [2023-08-26 22:45:25,413 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, 33 predicate places. [2023-08-26 22:45:25,413 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 160 transitions, 552 flow [2023-08-26 22:45:25,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 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 22:45:25,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:45:25,414 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-26 22:45:25,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 22:45:25,414 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 22:45:25,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:45:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash -449876904, now seen corresponding path program 1 times [2023-08-26 22:45:25,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:45:25,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890172210] [2023-08-26 22:45:25,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:45:25,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:45:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:45:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 22:45:25,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:45:25,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890172210] [2023-08-26 22:45:25,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890172210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:45:25,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:45:25,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:45:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973853470] [2023-08-26 22:45:25,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:45:25,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:45:25,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:45:25,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:45:25,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:45:25,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 724 [2023-08-26 22:45:25,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 160 transitions, 552 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 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 22:45:25,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:45:25,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 724 [2023-08-26 22:45:25,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:45:35,527 INFO L124 PetriNetUnfolderBase]: 102595/158541 cut-off events. [2023-08-26 22:45:35,527 INFO L125 PetriNetUnfolderBase]: For 35953/35953 co-relation queries the response was YES. [2023-08-26 22:45:36,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357401 conditions, 158541 events. 102595/158541 cut-off events. For 35953/35953 co-relation queries the response was YES. Maximal size of possible extension queue 4344. Compared 1397089 event pairs, 9552 based on Foata normal form. 0/114546 useless extension candidates. Maximal degree in co-relation 357340. Up to 144528 conditions per place. [2023-08-26 22:45:36,909 INFO L140 encePairwiseOnDemand]: 720/724 looper letters, 198 selfloop transitions, 6 changer transitions 0/219 dead transitions. [2023-08-26 22:45:36,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 219 transitions, 1138 flow [2023-08-26 22:45:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:45:36,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:45:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1112 transitions. [2023-08-26 22:45:36,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119705340699816 [2023-08-26 22:45:36,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1112 transitions. [2023-08-26 22:45:36,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1112 transitions. [2023-08-26 22:45:36,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:45:36,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1112 transitions. [2023-08-26 22:45:36,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.6666666666667) internal successors, (1112), 3 states have internal predecessors, (1112), 0 states have call successors, (0), 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 22:45:36,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 724.0) internal successors, (2896), 4 states have internal predecessors, (2896), 0 states have call successors, (0), 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 22:45:36,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 724.0) internal successors, (2896), 4 states have internal predecessors, (2896), 0 states have call successors, (0), 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 22:45:36,917 INFO L175 Difference]: Start difference. First operand has 151 places, 160 transitions, 552 flow. Second operand 3 states and 1112 transitions. [2023-08-26 22:45:36,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 219 transitions, 1138 flow [2023-08-26 22:45:37,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 219 transitions, 1134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:45:37,180 INFO L231 Difference]: Finished difference. Result has 151 places, 160 transitions, 570 flow [2023-08-26 22:45:37,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=724, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=570, PETRI_PLACES=151, PETRI_TRANSITIONS=160} [2023-08-26 22:45:37,180 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, 33 predicate places. [2023-08-26 22:45:37,180 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 160 transitions, 570 flow [2023-08-26 22:45:37,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 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 22:45:37,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:45:37,181 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:45:37,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 22:45:37,181 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 22:45:37,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:45:37,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1029072270, now seen corresponding path program 1 times [2023-08-26 22:45:37,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:45:37,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531702136] [2023-08-26 22:45:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:45:37,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:45:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:45:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:45:37,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:45:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531702136] [2023-08-26 22:45:37,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531702136] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:45:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015544035] [2023-08-26 22:45:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:45:37,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:45:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:45:37,241 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:45:37,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 22:45:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:45:37,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:45:37,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:45:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:45:37,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:45:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:45:37,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015544035] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:45:37,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:45:37,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-26 22:45:37,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985915432] [2023-08-26 22:45:37,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:45:37,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:45:37,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:45:37,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:45:37,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:45:37,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 724 [2023-08-26 22:45:37,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 160 transitions, 570 flow. Second operand has 7 states, 7 states have (on average 321.85714285714283) internal successors, (2253), 7 states have internal predecessors, (2253), 0 states have call successors, (0), 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 22:45:37,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:45:37,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 724 [2023-08-26 22:45:37,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:45:38,436 INFO L124 PetriNetUnfolderBase]: 6684/11588 cut-off events. [2023-08-26 22:45:38,436 INFO L125 PetriNetUnfolderBase]: For 11859/11859 co-relation queries the response was YES. [2023-08-26 22:45:38,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34087 conditions, 11588 events. 6684/11588 cut-off events. For 11859/11859 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 83020 event pairs, 496 based on Foata normal form. 1292/10433 useless extension candidates. Maximal degree in co-relation 34026. Up to 7675 conditions per place. [2023-08-26 22:45:38,481 INFO L140 encePairwiseOnDemand]: 721/724 looper letters, 168 selfloop transitions, 3 changer transitions 0/178 dead transitions. [2023-08-26 22:45:38,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 178 transitions, 975 flow [2023-08-26 22:45:38,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:45:38,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:45:38,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1730 transitions. [2023-08-26 22:45:38,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47790055248618785 [2023-08-26 22:45:38,484 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1730 transitions. [2023-08-26 22:45:38,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1730 transitions. [2023-08-26 22:45:38,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:45:38,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1730 transitions. [2023-08-26 22:45:38,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 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 22:45:38,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 724.0) internal successors, (4344), 6 states have internal predecessors, (4344), 0 states have call successors, (0), 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 22:45:38,490 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 724.0) internal successors, (4344), 6 states have internal predecessors, (4344), 0 states have call successors, (0), 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 22:45:38,490 INFO L175 Difference]: Start difference. First operand has 151 places, 160 transitions, 570 flow. Second operand 5 states and 1730 transitions. [2023-08-26 22:45:38,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 178 transitions, 975 flow [2023-08-26 22:45:38,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 178 transitions, 936 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-26 22:45:38,539 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 324 flow [2023-08-26 22:45:38,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=724, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2023-08-26 22:45:38,540 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -19 predicate places. [2023-08-26 22:45:38,540 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 324 flow [2023-08-26 22:45:38,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 321.85714285714283) internal successors, (2253), 7 states have internal predecessors, (2253), 0 states have call successors, (0), 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 22:45:38,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:45:38,541 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:45:38,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 22:45:38,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 22:45:38,749 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 22:45:38,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:45:38,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1460095025, now seen corresponding path program 1 times [2023-08-26 22:45:38,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:45:38,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328999034] [2023-08-26 22:45:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:45:38,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:45:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:45:38,776 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:45:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:45:38,795 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:45:38,795 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:45:38,795 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (39 of 40 remaining) [2023-08-26 22:45:38,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 40 remaining) [2023-08-26 22:45:38,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 40 remaining) [2023-08-26 22:45:38,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 40 remaining) [2023-08-26 22:45:38,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 40 remaining) [2023-08-26 22:45:38,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 40 remaining) [2023-08-26 22:45:38,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 40 remaining) [2023-08-26 22:45:38,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 40 remaining) [2023-08-26 22:45:38,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 40 remaining) [2023-08-26 22:45:38,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 40 remaining) [2023-08-26 22:45:38,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 40 remaining) [2023-08-26 22:45:38,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 40 remaining) [2023-08-26 22:45:38,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 40 remaining) [2023-08-26 22:45:38,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONASSERT (26 of 40 remaining) [2023-08-26 22:45:38,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 40 remaining) [2023-08-26 22:45:38,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 40 remaining) [2023-08-26 22:45:38,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 40 remaining) [2023-08-26 22:45:38,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 40 remaining) [2023-08-26 22:45:38,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONASSERT (21 of 40 remaining) [2023-08-26 22:45:38,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 40 remaining) [2023-08-26 22:45:38,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 40 remaining) [2023-08-26 22:45:38,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 40 remaining) [2023-08-26 22:45:38,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 40 remaining) [2023-08-26 22:45:38,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 40 remaining) [2023-08-26 22:45:38,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 40 remaining) [2023-08-26 22:45:38,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (14 of 40 remaining) [2023-08-26 22:45:38,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 40 remaining) [2023-08-26 22:45:38,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 40 remaining) [2023-08-26 22:45:38,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 40 remaining) [2023-08-26 22:45:38,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 40 remaining) [2023-08-26 22:45:38,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 40 remaining) [2023-08-26 22:45:38,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 40 remaining) [2023-08-26 22:45:38,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (7 of 40 remaining) [2023-08-26 22:45:38,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 40 remaining) [2023-08-26 22:45:38,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 40 remaining) [2023-08-26 22:45:38,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 40 remaining) [2023-08-26 22:45:38,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 40 remaining) [2023-08-26 22:45:38,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 40 remaining) [2023-08-26 22:45:38,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 40 remaining) [2023-08-26 22:45:38,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (0 of 40 remaining) [2023-08-26 22:45:38,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 22:45:38,799 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-26 22:45:38,800 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:45:38,800 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:45:38,840 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:45:38,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 403 places, 476 transitions, 982 flow [2023-08-26 22:45:38,968 INFO L124 PetriNetUnfolderBase]: 179/1077 cut-off events. [2023-08-26 22:45:38,968 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:45:38,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1105 conditions, 1077 events. 179/1077 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6237 event pairs, 1 based on Foata normal form. 0/803 useless extension candidates. Maximal degree in co-relation 758. Up to 16 conditions per place. [2023-08-26 22:45:38,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 403 places, 476 transitions, 982 flow [2023-08-26 22:45:39,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 403 places, 476 transitions, 982 flow [2023-08-26 22:45:39,004 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:45:39,004 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 403 places, 476 transitions, 982 flow [2023-08-26 22:45:39,004 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 403 places, 476 transitions, 982 flow [2023-08-26 22:45:39,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 403 places, 476 transitions, 982 flow [2023-08-26 22:45:39,113 INFO L124 PetriNetUnfolderBase]: 179/1077 cut-off events. [2023-08-26 22:45:39,114 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:45:39,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1105 conditions, 1077 events. 179/1077 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6237 event pairs, 1 based on Foata normal form. 0/803 useless extension candidates. Maximal degree in co-relation 758. Up to 16 conditions per place. [2023-08-26 22:45:39,178 INFO L119 LiptonReduction]: Number of co-enabled transitions 136680 [2023-08-26 22:45:43,543 INFO L134 LiptonReduction]: Checked pairs total: 246388 [2023-08-26 22:45:43,543 INFO L136 LiptonReduction]: Total number of compositions: 418 [2023-08-26 22:45:43,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:45:43,545 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;@1169f37c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:45:43,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2023-08-26 22:45:43,546 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:45:43,546 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-08-26 22:45:43,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:45:43,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:45:43,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 22:45:43,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-26 22:45:43,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:45:43,547 INFO L85 PathProgramCache]: Analyzing trace with hash 95138, now seen corresponding path program 1 times [2023-08-26 22:45:43,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:45:43,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047642312] [2023-08-26 22:45:43,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:45:43,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:45:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:45:43,567 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 22:45:43,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:45:43,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047642312] [2023-08-26 22:45:43,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047642312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:45:43,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:45:43,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:45:43,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555343555] [2023-08-26 22:45:43,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:45:43,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:45:43,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:45:43,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:45:43,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:45:43,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 894 [2023-08-26 22:45:43,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 204 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 390.6666666666667) internal successors, (1172), 3 states have internal predecessors, (1172), 0 states have call successors, (0), 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 22:45:43,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:45:43,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 894 [2023-08-26 22:45:43,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand