/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/pthread/stack_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 20:48:11,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 20:48:12,053 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 20:48:12,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 20:48:12,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 20:48:12,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 20:48:12,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 20:48:12,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 20:48:12,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 20:48:12,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 20:48:12,095 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 20:48:12,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 20:48:12,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 20:48:12,097 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 20:48:12,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 20:48:12,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 20:48:12,098 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 20:48:12,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 20:48:12,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 20:48:12,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 20:48:12,098 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 20:48:12,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 20:48:12,099 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 20:48:12,100 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 20:48:12,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 20:48:12,100 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 20:48:12,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 20:48:12,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:48:12,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 20:48:12,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 20:48:12,102 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 20:48:12,102 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 20:48:12,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 20:48:12,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 20:48:12,103 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 20:48:12,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 20:48:12,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 20:48:12,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 20:48:12,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 20:48:12,412 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 20:48:12,412 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 20:48:12,414 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2023-08-26 20:48:13,499 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 20:48:13,770 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 20:48:13,771 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2023-08-26 20:48:13,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/471495b35/40ec00a36d484682a57ca0d27b58232c/FLAG8096c5138 [2023-08-26 20:48:13,805 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/471495b35/40ec00a36d484682a57ca0d27b58232c [2023-08-26 20:48:13,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 20:48:13,808 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 20:48:13,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 20:48:13,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 20:48:13,811 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 20:48:13,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:48:13" (1/1) ... [2023-08-26 20:48:13,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb7ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:13, skipping insertion in model container [2023-08-26 20:48:13,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:48:13" (1/1) ... [2023-08-26 20:48:13,864 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 20:48:14,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:48:14,289 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 20:48:14,316 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 20:48:14,317 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 20:48:14,322 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-26 20:48:14,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:48:14,421 INFO L206 MainTranslator]: Completed translation [2023-08-26 20:48:14,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:14 WrapperNode [2023-08-26 20:48:14,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 20:48:14,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 20:48:14,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 20:48:14,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 20:48:14,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:14" (1/1) ... [2023-08-26 20:48:14,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:14" (1/1) ... [2023-08-26 20:48:14,496 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 163 [2023-08-26 20:48:14,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 20:48:14,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 20:48:14,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 20:48:14,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 20:48:14,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:14" (1/1) ... [2023-08-26 20:48:14,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:14" (1/1) ... [2023-08-26 20:48:14,522 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:14" (1/1) ... [2023-08-26 20:48:14,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:14" (1/1) ... [2023-08-26 20:48:14,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:14" (1/1) ... [2023-08-26 20:48:14,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:14" (1/1) ... [2023-08-26 20:48:14,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:14" (1/1) ... [2023-08-26 20:48:14,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:14" (1/1) ... [2023-08-26 20:48:14,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 20:48:14,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 20:48:14,553 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 20:48:14,553 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 20:48:14,554 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:14" (1/1) ... [2023-08-26 20:48:14,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:48:14,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:14,581 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 20:48:14,607 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 20:48:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-26 20:48:14,624 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-26 20:48:14,624 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-26 20:48:14,624 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-26 20:48:14,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 20:48:14,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 20:48:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 20:48:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 20:48:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 20:48:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 20:48:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 20:48:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 20:48:14,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 20:48:14,627 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 20:48:14,802 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 20:48:14,804 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 20:48:15,110 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 20:48:15,147 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 20:48:15,147 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-26 20:48:15,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:48:15 BoogieIcfgContainer [2023-08-26 20:48:15,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 20:48:15,150 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 20:48:15,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 20:48:15,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 20:48:15,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:48:13" (1/3) ... [2023-08-26 20:48:15,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67408eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:48:15, skipping insertion in model container [2023-08-26 20:48:15,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:48:14" (2/3) ... [2023-08-26 20:48:15,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67408eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:48:15, skipping insertion in model container [2023-08-26 20:48:15,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:48:15" (3/3) ... [2023-08-26 20:48:15,155 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2023-08-26 20:48:15,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 20:48:15,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-26 20:48:15,171 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 20:48:15,234 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 20:48:15,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 175 transitions, 366 flow [2023-08-26 20:48:15,315 INFO L124 PetriNetUnfolderBase]: 12/173 cut-off events. [2023-08-26 20:48:15,315 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 20:48:15,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 173 events. 12/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 472 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2023-08-26 20:48:15,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 175 transitions, 366 flow [2023-08-26 20:48:15,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 164 transitions, 337 flow [2023-08-26 20:48:15,330 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 20:48:15,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 164 transitions, 337 flow [2023-08-26 20:48:15,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 164 transitions, 337 flow [2023-08-26 20:48:15,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 164 transitions, 337 flow [2023-08-26 20:48:15,374 INFO L124 PetriNetUnfolderBase]: 12/164 cut-off events. [2023-08-26 20:48:15,374 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 20:48:15,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 164 events. 12/164 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 408 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2023-08-26 20:48:15,384 INFO L119 LiptonReduction]: Number of co-enabled transitions 9540 [2023-08-26 20:48:19,525 INFO L134 LiptonReduction]: Checked pairs total: 14007 [2023-08-26 20:48:19,525 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-26 20:48:19,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 20:48:19,542 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;@71d56296, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 20:48:19,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-26 20:48:19,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 20:48:19,548 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-26 20:48:19,548 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 20:48:19,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:19,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 20:48:19,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:19,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash -91113708, now seen corresponding path program 1 times [2023-08-26 20:48:19,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:19,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441177504] [2023-08-26 20:48:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:19,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:19,831 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 20:48:19,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:19,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441177504] [2023-08-26 20:48:19,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441177504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:19,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:19,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:19,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589311998] [2023-08-26 20:48:19,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:19,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:19,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:19,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:19,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:19,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 342 [2023-08-26 20:48:19,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 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 20:48:19,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:19,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 342 [2023-08-26 20:48:19,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:20,145 INFO L124 PetriNetUnfolderBase]: 1254/2057 cut-off events. [2023-08-26 20:48:20,146 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-26 20:48:20,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 2057 events. 1254/2057 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9563 event pairs, 509 based on Foata normal form. 0/1322 useless extension candidates. Maximal degree in co-relation 3888. Up to 1368 conditions per place. [2023-08-26 20:48:20,159 INFO L140 encePairwiseOnDemand]: 335/342 looper letters, 62 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-26 20:48:20,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 277 flow [2023-08-26 20:48:20,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:20,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-26 20:48:20,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2023-08-26 20:48:20,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-26 20:48:20,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-26 20:48:20,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:20,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-26 20:48:20,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 20:48:20,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:20,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:20,188 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 91 flow. Second operand 3 states and 516 transitions. [2023-08-26 20:48:20,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 277 flow [2023-08-26 20:48:20,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 269 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 20:48:20,194 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 107 flow [2023-08-26 20:48:20,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-26 20:48:20,198 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2023-08-26 20:48:20,198 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 107 flow [2023-08-26 20:48:20,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 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 20:48:20,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:20,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:20,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 20:48:20,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:20,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:20,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1205944391, now seen corresponding path program 1 times [2023-08-26 20:48:20,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:20,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821287884] [2023-08-26 20:48:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:20,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:20,328 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 20:48:20,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:20,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821287884] [2023-08-26 20:48:20,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821287884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:20,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:20,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:20,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958026252] [2023-08-26 20:48:20,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:20,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:20,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:20,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:20,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:20,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-26 20:48:20,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:48:20,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:20,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-26 20:48:20,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:20,675 INFO L124 PetriNetUnfolderBase]: 1725/3028 cut-off events. [2023-08-26 20:48:20,675 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2023-08-26 20:48:20,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6284 conditions, 3028 events. 1725/3028 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16562 event pairs, 868 based on Foata normal form. 0/2262 useless extension candidates. Maximal degree in co-relation 5712. Up to 1760 conditions per place. [2023-08-26 20:48:20,691 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 70 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-26 20:48:20,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 332 flow [2023-08-26 20:48:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:20,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-08-26 20:48:20,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272904483430799 [2023-08-26 20:48:20,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-08-26 20:48:20,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-08-26 20:48:20,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:20,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-08-26 20:48:20,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 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 20:48:20,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:20,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:20,703 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 107 flow. Second operand 3 states and 541 transitions. [2023-08-26 20:48:20,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 332 flow [2023-08-26 20:48:20,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:20,708 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 120 flow [2023-08-26 20:48:20,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-08-26 20:48:20,709 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-26 20:48:20,709 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 120 flow [2023-08-26 20:48:20,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:48:20,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:20,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:20,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 20:48:20,714 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:20,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:20,716 INFO L85 PathProgramCache]: Analyzing trace with hash -34630795, now seen corresponding path program 1 times [2023-08-26 20:48:20,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:20,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890567356] [2023-08-26 20:48:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:20,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:20,811 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 20:48:20,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:20,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890567356] [2023-08-26 20:48:20,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890567356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:20,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:20,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:20,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717133732] [2023-08-26 20:48:20,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:20,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:20,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:20,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:20,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:20,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-26 20:48:20,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 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 20:48:20,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:20,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-26 20:48:20,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:21,129 INFO L124 PetriNetUnfolderBase]: 2247/3682 cut-off events. [2023-08-26 20:48:21,129 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2023-08-26 20:48:21,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8469 conditions, 3682 events. 2247/3682 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 21545 event pairs, 979 based on Foata normal form. 0/2720 useless extension candidates. Maximal degree in co-relation 6652. Up to 3011 conditions per place. [2023-08-26 20:48:21,152 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 68 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-26 20:48:21,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 340 flow [2023-08-26 20:48:21,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:21,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:21,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-26 20:48:21,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243664717348928 [2023-08-26 20:48:21,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-26 20:48:21,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-26 20:48:21,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:21,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-26 20:48:21,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 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 20:48:21,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:21,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:21,159 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 120 flow. Second operand 3 states and 538 transitions. [2023-08-26 20:48:21,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 340 flow [2023-08-26 20:48:21,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:21,161 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 134 flow [2023-08-26 20:48:21,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-26 20:48:21,162 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-08-26 20:48:21,162 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 134 flow [2023-08-26 20:48:21,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 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 20:48:21,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:21,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:21,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 20:48:21,163 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:21,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:21,164 INFO L85 PathProgramCache]: Analyzing trace with hash -34630820, now seen corresponding path program 1 times [2023-08-26 20:48:21,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:21,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051192689] [2023-08-26 20:48:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:21,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:21,222 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 20:48:21,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:21,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051192689] [2023-08-26 20:48:21,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051192689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:21,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:21,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:21,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780447461] [2023-08-26 20:48:21,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:21,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:21,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:21,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:21,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:21,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-26 20:48:21,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 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 20:48:21,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:21,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-26 20:48:21,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:21,629 INFO L124 PetriNetUnfolderBase]: 2386/3851 cut-off events. [2023-08-26 20:48:21,629 INFO L125 PetriNetUnfolderBase]: For 589/589 co-relation queries the response was YES. [2023-08-26 20:48:21,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9370 conditions, 3851 events. 2386/3851 cut-off events. For 589/589 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22091 event pairs, 1048 based on Foata normal form. 160/3143 useless extension candidates. Maximal degree in co-relation 8980. Up to 3410 conditions per place. [2023-08-26 20:48:21,652 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 60 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-26 20:48:21,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 338 flow [2023-08-26 20:48:21,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:21,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:21,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-26 20:48:21,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2023-08-26 20:48:21,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-26 20:48:21,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-26 20:48:21,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:21,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-26 20:48:21,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:48:21,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:21,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:21,659 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 134 flow. Second operand 3 states and 531 transitions. [2023-08-26 20:48:21,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 338 flow [2023-08-26 20:48:21,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:21,661 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 170 flow [2023-08-26 20:48:21,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2023-08-26 20:48:21,662 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2023-08-26 20:48:21,662 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 170 flow [2023-08-26 20:48:21,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 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 20:48:21,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:21,663 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:21,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 20:48:21,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:21,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:21,664 INFO L85 PathProgramCache]: Analyzing trace with hash 28326508, now seen corresponding path program 1 times [2023-08-26 20:48:21,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:21,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532737759] [2023-08-26 20:48:21,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:21,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:21,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:21,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532737759] [2023-08-26 20:48:21,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532737759] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:48:21,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616721659] [2023-08-26 20:48:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:21,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:21,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:21,737 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 20:48:21,763 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 20:48:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:21,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 20:48:21,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:48:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:21,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 20:48:21,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616721659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:21,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 20:48:21,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-26 20:48:21,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930720867] [2023-08-26 20:48:21,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:21,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:48:21,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:48:21,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 20:48:21,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-26 20:48:21,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 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 20:48:21,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:21,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-26 20:48:21,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:22,314 INFO L124 PetriNetUnfolderBase]: 2074/3553 cut-off events. [2023-08-26 20:48:22,315 INFO L125 PetriNetUnfolderBase]: For 1490/1490 co-relation queries the response was YES. [2023-08-26 20:48:22,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9141 conditions, 3553 events. 2074/3553 cut-off events. For 1490/1490 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 19973 event pairs, 75 based on Foata normal form. 0/2887 useless extension candidates. Maximal degree in co-relation 8738. Up to 1861 conditions per place. [2023-08-26 20:48:22,339 INFO L140 encePairwiseOnDemand]: 339/342 looper letters, 100 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-08-26 20:48:22,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 104 transitions, 600 flow [2023-08-26 20:48:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 20:48:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 20:48:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 712 transitions. [2023-08-26 20:48:22,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2023-08-26 20:48:22,342 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 712 transitions. [2023-08-26 20:48:22,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 712 transitions. [2023-08-26 20:48:22,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:22,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 712 transitions. [2023-08-26 20:48:22,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 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 20:48:22,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 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 20:48:22,347 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 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 20:48:22,347 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 170 flow. Second operand 4 states and 712 transitions. [2023-08-26 20:48:22,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 104 transitions, 600 flow [2023-08-26 20:48:22,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 104 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:22,352 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 164 flow [2023-08-26 20:48:22,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-26 20:48:22,354 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2023-08-26 20:48:22,354 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 164 flow [2023-08-26 20:48:22,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 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 20:48:22,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:22,355 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:22,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 20:48:22,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:22,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:22,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:22,563 INFO L85 PathProgramCache]: Analyzing trace with hash 28326621, now seen corresponding path program 1 times [2023-08-26 20:48:22,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:22,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111159314] [2023-08-26 20:48:22,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:22,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 20:48:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111159314] [2023-08-26 20:48:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111159314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:22,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:22,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:22,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493868232] [2023-08-26 20:48:22,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:22,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:22,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:22,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:22,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-26 20:48:22,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 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 20:48:22,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:22,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-26 20:48:22,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:22,905 INFO L124 PetriNetUnfolderBase]: 2000/3401 cut-off events. [2023-08-26 20:48:22,905 INFO L125 PetriNetUnfolderBase]: For 1381/1381 co-relation queries the response was YES. [2023-08-26 20:48:22,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8555 conditions, 3401 events. 2000/3401 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18660 event pairs, 313 based on Foata normal form. 0/2823 useless extension candidates. Maximal degree in co-relation 8170. Up to 2507 conditions per place. [2023-08-26 20:48:22,924 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 63 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-26 20:48:22,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 391 flow [2023-08-26 20:48:22,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:22,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-26 20:48:22,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116959064327485 [2023-08-26 20:48:22,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-26 20:48:22,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-26 20:48:22,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:22,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-26 20:48:22,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 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 20:48:22,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:22,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:22,930 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 164 flow. Second operand 3 states and 525 transitions. [2023-08-26 20:48:22,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 391 flow [2023-08-26 20:48:22,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 20:48:22,934 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 173 flow [2023-08-26 20:48:22,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-26 20:48:22,936 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2023-08-26 20:48:22,936 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 173 flow [2023-08-26 20:48:22,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 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 20:48:22,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:22,937 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:22,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 20:48:22,937 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:22,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:22,938 INFO L85 PathProgramCache]: Analyzing trace with hash -893196287, now seen corresponding path program 1 times [2023-08-26 20:48:22,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:22,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441909751] [2023-08-26 20:48:22,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:22,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:23,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:23,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:23,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441909751] [2023-08-26 20:48:23,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441909751] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:48:23,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287137040] [2023-08-26 20:48:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:23,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:23,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:23,007 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 20:48:23,009 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 20:48:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:23,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 20:48:23,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:48:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:23,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:48:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:23,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287137040] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:48:23,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:48:23,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-26 20:48:23,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289219675] [2023-08-26 20:48:23,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:48:23,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 20:48:23,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:23,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 20:48:23,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-26 20:48:23,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-26 20:48:23,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 173 flow. Second operand has 10 states, 10 states have (on average 146.4) internal successors, (1464), 10 states have internal predecessors, (1464), 0 states have call successors, (0), 0 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 20:48:23,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:23,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-26 20:48:23,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:24,008 INFO L124 PetriNetUnfolderBase]: 4546/7433 cut-off events. [2023-08-26 20:48:24,009 INFO L125 PetriNetUnfolderBase]: For 4672/4672 co-relation queries the response was YES. [2023-08-26 20:48:24,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20217 conditions, 7433 events. 4546/7433 cut-off events. For 4672/4672 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 42899 event pairs, 667 based on Foata normal form. 154/6537 useless extension candidates. Maximal degree in co-relation 19594. Up to 2360 conditions per place. [2023-08-26 20:48:24,058 INFO L140 encePairwiseOnDemand]: 330/342 looper letters, 232 selfloop transitions, 40 changer transitions 0/273 dead transitions. [2023-08-26 20:48:24,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 273 transitions, 1577 flow [2023-08-26 20:48:24,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 20:48:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 20:48:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2254 transitions. [2023-08-26 20:48:24,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2023-08-26 20:48:24,064 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2254 transitions. [2023-08-26 20:48:24,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2254 transitions. [2023-08-26 20:48:24,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:24,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2254 transitions. [2023-08-26 20:48:24,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 161.0) internal successors, (2254), 14 states have internal predecessors, (2254), 0 states have call successors, (0), 0 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 20:48:24,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 342.0) internal successors, (5130), 15 states have internal predecessors, (5130), 0 states have call successors, (0), 0 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 20:48:24,076 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 342.0) internal successors, (5130), 15 states have internal predecessors, (5130), 0 states have call successors, (0), 0 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 20:48:24,076 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 173 flow. Second operand 14 states and 2254 transitions. [2023-08-26 20:48:24,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 273 transitions, 1577 flow [2023-08-26 20:48:24,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 273 transitions, 1531 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:24,103 INFO L231 Difference]: Finished difference. Result has 71 places, 85 transitions, 496 flow [2023-08-26 20:48:24,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=496, PETRI_PLACES=71, PETRI_TRANSITIONS=85} [2023-08-26 20:48:24,104 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2023-08-26 20:48:24,104 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 85 transitions, 496 flow [2023-08-26 20:48:24,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 146.4) internal successors, (1464), 10 states have internal predecessors, (1464), 0 states have call successors, (0), 0 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 20:48:24,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:24,105 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:24,113 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 20:48:24,310 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,SelfDestructingSolverStorable6 [2023-08-26 20:48:24,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:24,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash 630126791, now seen corresponding path program 1 times [2023-08-26 20:48:24,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:24,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536399176] [2023-08-26 20:48:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:24,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:24,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:24,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536399176] [2023-08-26 20:48:24,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536399176] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:48:24,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979929908] [2023-08-26 20:48:24,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:24,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:24,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:24,452 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 20:48:24,454 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 20:48:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:24,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 20:48:24,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:48:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:24,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 20:48:24,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979929908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:24,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 20:48:24,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-26 20:48:24,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119385172] [2023-08-26 20:48:24,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:24,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 20:48:24,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:24,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 20:48:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-26 20:48:24,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-26 20:48:24,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 85 transitions, 496 flow. Second operand has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 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 20:48:24,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:24,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-26 20:48:24,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:25,473 INFO L124 PetriNetUnfolderBase]: 5121/8506 cut-off events. [2023-08-26 20:48:25,473 INFO L125 PetriNetUnfolderBase]: For 12491/12491 co-relation queries the response was YES. [2023-08-26 20:48:25,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26672 conditions, 8506 events. 5121/8506 cut-off events. For 12491/12491 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 47604 event pairs, 1166 based on Foata normal form. 598/8220 useless extension candidates. Maximal degree in co-relation 26008. Up to 4022 conditions per place. [2023-08-26 20:48:25,529 INFO L140 encePairwiseOnDemand]: 330/342 looper letters, 152 selfloop transitions, 38 changer transitions 0/191 dead transitions. [2023-08-26 20:48:25,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 191 transitions, 1398 flow [2023-08-26 20:48:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 20:48:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 20:48:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1135 transitions. [2023-08-26 20:48:25,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4741019214703425 [2023-08-26 20:48:25,532 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1135 transitions. [2023-08-26 20:48:25,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1135 transitions. [2023-08-26 20:48:25,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:25,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1135 transitions. [2023-08-26 20:48:25,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.14285714285714) internal successors, (1135), 7 states have internal predecessors, (1135), 0 states have call successors, (0), 0 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 20:48:25,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 342.0) internal successors, (2736), 8 states have internal predecessors, (2736), 0 states have call successors, (0), 0 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 20:48:25,538 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 342.0) internal successors, (2736), 8 states have internal predecessors, (2736), 0 states have call successors, (0), 0 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 20:48:25,538 INFO L175 Difference]: Start difference. First operand has 71 places, 85 transitions, 496 flow. Second operand 7 states and 1135 transitions. [2023-08-26 20:48:25,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 191 transitions, 1398 flow [2023-08-26 20:48:25,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 191 transitions, 1380 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:25,565 INFO L231 Difference]: Finished difference. Result has 79 places, 102 transitions, 825 flow [2023-08-26 20:48:25,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=825, PETRI_PLACES=79, PETRI_TRANSITIONS=102} [2023-08-26 20:48:25,566 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-08-26 20:48:25,566 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 102 transitions, 825 flow [2023-08-26 20:48:25,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 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 20:48:25,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:25,567 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-26 20:48:25,575 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 20:48:25,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:25,772 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:25,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:25,773 INFO L85 PathProgramCache]: Analyzing trace with hash -38520247, now seen corresponding path program 1 times [2023-08-26 20:48:25,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:25,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831767327] [2023-08-26 20:48:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:25,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:25,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:25,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831767327] [2023-08-26 20:48:25,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831767327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:25,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:25,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:25,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281852978] [2023-08-26 20:48:25,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:25,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:25,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:25,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:25,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:25,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-26 20:48:25,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 102 transitions, 825 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 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 20:48:25,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:25,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-26 20:48:25,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:26,585 INFO L124 PetriNetUnfolderBase]: 4552/7689 cut-off events. [2023-08-26 20:48:26,585 INFO L125 PetriNetUnfolderBase]: For 17785/17785 co-relation queries the response was YES. [2023-08-26 20:48:26,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26239 conditions, 7689 events. 4552/7689 cut-off events. For 17785/17785 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 44097 event pairs, 1795 based on Foata normal form. 0/7135 useless extension candidates. Maximal degree in co-relation 25716. Up to 7471 conditions per place. [2023-08-26 20:48:26,640 INFO L140 encePairwiseOnDemand]: 340/342 looper letters, 100 selfloop transitions, 1 changer transitions 0/109 dead transitions. [2023-08-26 20:48:26,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 1054 flow [2023-08-26 20:48:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-26 20:48:26,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49902534113060426 [2023-08-26 20:48:26,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-26 20:48:26,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-26 20:48:26,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:26,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-26 20:48:26,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 20:48:26,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:26,646 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:26,646 INFO L175 Difference]: Start difference. First operand has 79 places, 102 transitions, 825 flow. Second operand 3 states and 512 transitions. [2023-08-26 20:48:26,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 1054 flow [2023-08-26 20:48:26,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 1038 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-26 20:48:26,682 INFO L231 Difference]: Finished difference. Result has 78 places, 100 transitions, 799 flow [2023-08-26 20:48:26,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=799, PETRI_PLACES=78, PETRI_TRANSITIONS=100} [2023-08-26 20:48:26,683 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2023-08-26 20:48:26,683 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 100 transitions, 799 flow [2023-08-26 20:48:26,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 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 20:48:26,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:26,683 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-26 20:48:26,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 20:48:26,683 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:26,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash -38520246, now seen corresponding path program 1 times [2023-08-26 20:48:26,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:26,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922070315] [2023-08-26 20:48:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:26,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 20:48:26,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:26,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922070315] [2023-08-26 20:48:26,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922070315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:26,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:26,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:48:26,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134192484] [2023-08-26 20:48:26,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:26,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:26,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:26,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:26,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:26,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-26 20:48:26,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 100 transitions, 799 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 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 20:48:26,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:26,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-26 20:48:26,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:27,301 INFO L124 PetriNetUnfolderBase]: 4112/6983 cut-off events. [2023-08-26 20:48:27,301 INFO L125 PetriNetUnfolderBase]: For 16069/16083 co-relation queries the response was YES. [2023-08-26 20:48:27,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23603 conditions, 6983 events. 4112/6983 cut-off events. For 16069/16083 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 39569 event pairs, 1293 based on Foata normal form. 0/6753 useless extension candidates. Maximal degree in co-relation 17262. Up to 5055 conditions per place. [2023-08-26 20:48:27,346 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 114 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2023-08-26 20:48:27,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 1210 flow [2023-08-26 20:48:27,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2023-08-26 20:48:27,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5097465886939572 [2023-08-26 20:48:27,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2023-08-26 20:48:27,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2023-08-26 20:48:27,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:27,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2023-08-26 20:48:27,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 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 20:48:27,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:27,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:27,356 INFO L175 Difference]: Start difference. First operand has 78 places, 100 transitions, 799 flow. Second operand 3 states and 523 transitions. [2023-08-26 20:48:27,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 1210 flow [2023-08-26 20:48:27,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 1201 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:27,386 INFO L231 Difference]: Finished difference. Result has 79 places, 99 transitions, 801 flow [2023-08-26 20:48:27,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=801, PETRI_PLACES=79, PETRI_TRANSITIONS=99} [2023-08-26 20:48:27,387 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-08-26 20:48:27,387 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 99 transitions, 801 flow [2023-08-26 20:48:27,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 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 20:48:27,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:27,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:27,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 20:48:27,388 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:27,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:27,388 INFO L85 PathProgramCache]: Analyzing trace with hash -333694767, now seen corresponding path program 1 times [2023-08-26 20:48:27,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:27,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391318768] [2023-08-26 20:48:27,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:27,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:27,466 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 20:48:27,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:27,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391318768] [2023-08-26 20:48:27,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391318768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:27,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:27,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:48:27,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316603508] [2023-08-26 20:48:27,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:27,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:48:27,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:27,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:48:27,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:48:27,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 342 [2023-08-26 20:48:27,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 99 transitions, 801 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 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 20:48:27,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:27,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 342 [2023-08-26 20:48:27,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:27,728 INFO L124 PetriNetUnfolderBase]: 1208/2207 cut-off events. [2023-08-26 20:48:27,728 INFO L125 PetriNetUnfolderBase]: For 4162/4162 co-relation queries the response was YES. [2023-08-26 20:48:27,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7595 conditions, 2207 events. 1208/2207 cut-off events. For 4162/4162 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 10648 event pairs, 203 based on Foata normal form. 232/2421 useless extension candidates. Maximal degree in co-relation 7156. Up to 1695 conditions per place. [2023-08-26 20:48:27,739 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 63 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2023-08-26 20:48:27,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 663 flow [2023-08-26 20:48:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:48:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:48:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-26 20:48:27,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48635477582846004 [2023-08-26 20:48:27,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-26 20:48:27,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-26 20:48:27,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:27,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-26 20:48:27,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 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 20:48:27,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:27,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 20:48:27,746 INFO L175 Difference]: Start difference. First operand has 79 places, 99 transitions, 801 flow. Second operand 3 states and 499 transitions. [2023-08-26 20:48:27,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 663 flow [2023-08-26 20:48:27,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 609 flow, removed 15 selfloop flow, removed 8 redundant places. [2023-08-26 20:48:27,758 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 436 flow [2023-08-26 20:48:27,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-08-26 20:48:27,759 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2023-08-26 20:48:27,759 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 436 flow [2023-08-26 20:48:27,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 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 20:48:27,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:27,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:27,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 20:48:27,759 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:27,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:27,760 INFO L85 PathProgramCache]: Analyzing trace with hash -434025252, now seen corresponding path program 1 times [2023-08-26 20:48:27,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:27,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425961285] [2023-08-26 20:48:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:27,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:28,333 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 20:48:28,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:28,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425961285] [2023-08-26 20:48:28,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425961285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:28,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:28,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-26 20:48:28,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420922995] [2023-08-26 20:48:28,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:28,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 20:48:28,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:28,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 20:48:28,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-26 20:48:28,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 342 [2023-08-26 20:48:28,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 436 flow. Second operand has 11 states, 11 states have (on average 128.9090909090909) internal successors, (1418), 11 states have internal predecessors, (1418), 0 states have call successors, (0), 0 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 20:48:28,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:28,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 342 [2023-08-26 20:48:28,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:28,975 INFO L124 PetriNetUnfolderBase]: 1567/2884 cut-off events. [2023-08-26 20:48:28,976 INFO L125 PetriNetUnfolderBase]: For 3992/3992 co-relation queries the response was YES. [2023-08-26 20:48:28,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9549 conditions, 2884 events. 1567/2884 cut-off events. For 3992/3992 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 14927 event pairs, 476 based on Foata normal form. 12/2890 useless extension candidates. Maximal degree in co-relation 7066. Up to 1840 conditions per place. [2023-08-26 20:48:28,991 INFO L140 encePairwiseOnDemand]: 332/342 looper letters, 130 selfloop transitions, 11 changer transitions 0/146 dead transitions. [2023-08-26 20:48:28,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 146 transitions, 1089 flow [2023-08-26 20:48:28,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 20:48:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 20:48:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1249 transitions. [2023-08-26 20:48:28,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40578297595841456 [2023-08-26 20:48:28,995 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1249 transitions. [2023-08-26 20:48:28,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1249 transitions. [2023-08-26 20:48:28,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:28,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1249 transitions. [2023-08-26 20:48:28,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.77777777777777) internal successors, (1249), 9 states have internal predecessors, (1249), 0 states have call successors, (0), 0 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 20:48:29,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 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 20:48:29,002 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 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 20:48:29,002 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 436 flow. Second operand 9 states and 1249 transitions. [2023-08-26 20:48:29,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 146 transitions, 1089 flow [2023-08-26 20:48:29,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 146 transitions, 1070 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:29,011 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 504 flow [2023-08-26 20:48:29,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=504, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-08-26 20:48:29,012 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-08-26 20:48:29,012 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 504 flow [2023-08-26 20:48:29,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.9090909090909) internal successors, (1418), 11 states have internal predecessors, (1418), 0 states have call successors, (0), 0 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 20:48:29,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:29,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:29,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 20:48:29,013 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:29,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:29,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1363493086, now seen corresponding path program 2 times [2023-08-26 20:48:29,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:29,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658782386] [2023-08-26 20:48:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:29,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:29,584 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 20:48:29,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:29,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658782386] [2023-08-26 20:48:29,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658782386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:29,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:29,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-26 20:48:29,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107167880] [2023-08-26 20:48:29,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:29,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 20:48:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 20:48:29,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-26 20:48:29,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 342 [2023-08-26 20:48:29,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 504 flow. Second operand has 11 states, 11 states have (on average 128.9090909090909) internal successors, (1418), 11 states have internal predecessors, (1418), 0 states have call successors, (0), 0 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 20:48:29,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:29,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 342 [2023-08-26 20:48:29,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:30,443 INFO L124 PetriNetUnfolderBase]: 1850/3399 cut-off events. [2023-08-26 20:48:30,444 INFO L125 PetriNetUnfolderBase]: For 4833/4833 co-relation queries the response was YES. [2023-08-26 20:48:30,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11525 conditions, 3399 events. 1850/3399 cut-off events. For 4833/4833 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 18172 event pairs, 486 based on Foata normal form. 0/3381 useless extension candidates. Maximal degree in co-relation 8991. Up to 1719 conditions per place. [2023-08-26 20:48:30,460 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 128 selfloop transitions, 16 changer transitions 0/149 dead transitions. [2023-08-26 20:48:30,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 149 transitions, 1150 flow [2023-08-26 20:48:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 20:48:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 20:48:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1249 transitions. [2023-08-26 20:48:30,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40578297595841456 [2023-08-26 20:48:30,468 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1249 transitions. [2023-08-26 20:48:30,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1249 transitions. [2023-08-26 20:48:30,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:30,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1249 transitions. [2023-08-26 20:48:30,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.77777777777777) internal successors, (1249), 9 states have internal predecessors, (1249), 0 states have call successors, (0), 0 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 20:48:30,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 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 20:48:30,476 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 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 20:48:30,476 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 504 flow. Second operand 9 states and 1249 transitions. [2023-08-26 20:48:30,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 149 transitions, 1150 flow [2023-08-26 20:48:30,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 149 transitions, 1146 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-26 20:48:30,487 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 596 flow [2023-08-26 20:48:30,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=596, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2023-08-26 20:48:30,488 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2023-08-26 20:48:30,488 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 596 flow [2023-08-26 20:48:30,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.9090909090909) internal successors, (1418), 11 states have internal predecessors, (1418), 0 states have call successors, (0), 0 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 20:48:30,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:30,489 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:30,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 20:48:30,489 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:30,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash 829151540, now seen corresponding path program 1 times [2023-08-26 20:48:30,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:30,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026342308] [2023-08-26 20:48:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:30,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:30,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:30,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026342308] [2023-08-26 20:48:30,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026342308] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:48:30,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349575490] [2023-08-26 20:48:30,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:30,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:30,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:30,583 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 20:48:30,585 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 20:48:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:30,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 20:48:30,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:48:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:48:30,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 20:48:30,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349575490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:30,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 20:48:30,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-08-26 20:48:30,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51501806] [2023-08-26 20:48:30,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:30,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 20:48:30,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:30,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 20:48:30,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-26 20:48:30,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 342 [2023-08-26 20:48:30,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 596 flow. Second operand has 6 states, 6 states have (on average 140.83333333333334) internal successors, (845), 6 states have internal predecessors, (845), 0 states have call successors, (0), 0 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 20:48:30,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:30,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 342 [2023-08-26 20:48:30,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:31,196 INFO L124 PetriNetUnfolderBase]: 1806/3315 cut-off events. [2023-08-26 20:48:31,196 INFO L125 PetriNetUnfolderBase]: For 5564/5564 co-relation queries the response was YES. [2023-08-26 20:48:31,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11649 conditions, 3315 events. 1806/3315 cut-off events. For 5564/5564 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 17114 event pairs, 527 based on Foata normal form. 68/3359 useless extension candidates. Maximal degree in co-relation 9964. Up to 1313 conditions per place. [2023-08-26 20:48:31,214 INFO L140 encePairwiseOnDemand]: 331/342 looper letters, 117 selfloop transitions, 23 changer transitions 0/141 dead transitions. [2023-08-26 20:48:31,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 141 transitions, 1186 flow [2023-08-26 20:48:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 20:48:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 20:48:31,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 917 transitions. [2023-08-26 20:48:31,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468810916179337 [2023-08-26 20:48:31,218 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 917 transitions. [2023-08-26 20:48:31,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 917 transitions. [2023-08-26 20:48:31,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:31,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 917 transitions. [2023-08-26 20:48:31,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 152.83333333333334) internal successors, (917), 6 states have internal predecessors, (917), 0 states have call successors, (0), 0 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 20:48:31,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 342.0) internal successors, (2394), 7 states have internal predecessors, (2394), 0 states have call successors, (0), 0 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 20:48:31,235 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 342.0) internal successors, (2394), 7 states have internal predecessors, (2394), 0 states have call successors, (0), 0 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 20:48:31,236 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 596 flow. Second operand 6 states and 917 transitions. [2023-08-26 20:48:31,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 141 transitions, 1186 flow [2023-08-26 20:48:31,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 141 transitions, 1154 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-08-26 20:48:31,248 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 740 flow [2023-08-26 20:48:31,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=740, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-08-26 20:48:31,249 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2023-08-26 20:48:31,249 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 740 flow [2023-08-26 20:48:31,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.83333333333334) internal successors, (845), 6 states have internal predecessors, (845), 0 states have call successors, (0), 0 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 20:48:31,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:31,250 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:31,260 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 20:48:31,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:31,455 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:31,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:31,456 INFO L85 PathProgramCache]: Analyzing trace with hash 87113741, now seen corresponding path program 1 times [2023-08-26 20:48:31,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:31,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141200366] [2023-08-26 20:48:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:31,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:31,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:31,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141200366] [2023-08-26 20:48:31,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141200366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:31,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:31,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 20:48:31,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129069396] [2023-08-26 20:48:31,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:31,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 20:48:31,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:31,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 20:48:31,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 20:48:31,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-26 20:48:31,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 740 flow. Second operand has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 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 20:48:31,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:31,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-26 20:48:31,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:31,978 INFO L124 PetriNetUnfolderBase]: 2145/3906 cut-off events. [2023-08-26 20:48:31,978 INFO L125 PetriNetUnfolderBase]: For 7190/7190 co-relation queries the response was YES. [2023-08-26 20:48:31,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14157 conditions, 3906 events. 2145/3906 cut-off events. For 7190/7190 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 20950 event pairs, 495 based on Foata normal form. 16/3898 useless extension candidates. Maximal degree in co-relation 12374. Up to 1765 conditions per place. [2023-08-26 20:48:31,997 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 114 selfloop transitions, 24 changer transitions 0/139 dead transitions. [2023-08-26 20:48:31,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 139 transitions, 1311 flow [2023-08-26 20:48:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 20:48:31,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 20:48:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 794 transitions. [2023-08-26 20:48:32,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.464327485380117 [2023-08-26 20:48:32,000 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 794 transitions. [2023-08-26 20:48:32,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 794 transitions. [2023-08-26 20:48:32,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:32,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 794 transitions. [2023-08-26 20:48:32,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.8) internal successors, (794), 5 states have internal predecessors, (794), 0 states have call successors, (0), 0 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 20:48:32,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 20:48:32,005 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 20:48:32,005 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 740 flow. Second operand 5 states and 794 transitions. [2023-08-26 20:48:32,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 139 transitions, 1311 flow [2023-08-26 20:48:32,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 139 transitions, 1307 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-26 20:48:32,023 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 944 flow [2023-08-26 20:48:32,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=944, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2023-08-26 20:48:32,023 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2023-08-26 20:48:32,024 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 944 flow [2023-08-26 20:48:32,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 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 20:48:32,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:32,024 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 20:48:32,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 20:48:32,024 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:32,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:32,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2073686424, now seen corresponding path program 1 times [2023-08-26 20:48:32,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:32,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382344585] [2023-08-26 20:48:32,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:32,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:32,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:32,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382344585] [2023-08-26 20:48:32,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382344585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:48:32,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634682852] [2023-08-26 20:48:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:32,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:32,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:32,144 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 20:48:32,147 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 20:48:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:32,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 20:48:32,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:48:32,315 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:32,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:48:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:32,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634682852] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:48:32,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:48:32,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-26 20:48:32,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167386046] [2023-08-26 20:48:32,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:48:32,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 20:48:32,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:32,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 20:48:32,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-26 20:48:32,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-26 20:48:32,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 944 flow. Second operand has 18 states, 18 states have (on average 146.44444444444446) internal successors, (2636), 18 states have internal predecessors, (2636), 0 states have call successors, (0), 0 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 20:48:32,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:32,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-26 20:48:32,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:33,348 INFO L124 PetriNetUnfolderBase]: 3265/5954 cut-off events. [2023-08-26 20:48:33,349 INFO L125 PetriNetUnfolderBase]: For 18623/18623 co-relation queries the response was YES. [2023-08-26 20:48:33,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22330 conditions, 5954 events. 3265/5954 cut-off events. For 18623/18623 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 31025 event pairs, 745 based on Foata normal form. 208/6144 useless extension candidates. Maximal degree in co-relation 20277. Up to 2051 conditions per place. [2023-08-26 20:48:33,380 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 265 selfloop transitions, 52 changer transitions 3/321 dead transitions. [2023-08-26 20:48:33,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 321 transitions, 2924 flow [2023-08-26 20:48:33,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 20:48:33,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 20:48:33,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2683 transitions. [2023-08-26 20:48:33,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46147230822153423 [2023-08-26 20:48:33,387 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2683 transitions. [2023-08-26 20:48:33,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2683 transitions. [2023-08-26 20:48:33,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:33,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2683 transitions. [2023-08-26 20:48:33,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 157.8235294117647) internal successors, (2683), 17 states have internal predecessors, (2683), 0 states have call successors, (0), 0 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 20:48:33,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 342.0) internal successors, (6156), 18 states have internal predecessors, (6156), 0 states have call successors, (0), 0 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 20:48:33,402 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 342.0) internal successors, (6156), 18 states have internal predecessors, (6156), 0 states have call successors, (0), 0 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 20:48:33,402 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 944 flow. Second operand 17 states and 2683 transitions. [2023-08-26 20:48:33,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 321 transitions, 2924 flow [2023-08-26 20:48:33,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 321 transitions, 2903 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 20:48:33,433 INFO L231 Difference]: Finished difference. Result has 122 places, 125 transitions, 1423 flow [2023-08-26 20:48:33,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1423, PETRI_PLACES=122, PETRI_TRANSITIONS=125} [2023-08-26 20:48:33,434 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 79 predicate places. [2023-08-26 20:48:33,434 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 125 transitions, 1423 flow [2023-08-26 20:48:33,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 146.44444444444446) internal successors, (2636), 18 states have internal predecessors, (2636), 0 states have call successors, (0), 0 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 20:48:33,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:33,435 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:33,441 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 20:48:33,640 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,SelfDestructingSolverStorable15 [2023-08-26 20:48:33,641 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:33,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:33,641 INFO L85 PathProgramCache]: Analyzing trace with hash -928121280, now seen corresponding path program 3 times [2023-08-26 20:48:33,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:33,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193975540] [2023-08-26 20:48:33,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:33,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:35,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:35,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193975540] [2023-08-26 20:48:35,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193975540] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:48:35,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015694388] [2023-08-26 20:48:35,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 20:48:35,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:35,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:35,080 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 20:48:35,103 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 20:48:35,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-26 20:48:35,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 20:48:35,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-26 20:48:35,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:48:35,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 20:48:35,741 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2023-08-26 20:48:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 20:48:35,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 20:48:35,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015694388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:35,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 20:48:35,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 32 [2023-08-26 20:48:35,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782978308] [2023-08-26 20:48:35,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:35,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 20:48:35,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:35,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 20:48:35,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1007, Unknown=0, NotChecked=0, Total=1122 [2023-08-26 20:48:35,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 342 [2023-08-26 20:48:35,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 125 transitions, 1423 flow. Second operand has 15 states, 15 states have (on average 104.86666666666666) internal successors, (1573), 15 states have internal predecessors, (1573), 0 states have call successors, (0), 0 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 20:48:35,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:35,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 342 [2023-08-26 20:48:35,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:38,425 INFO L124 PetriNetUnfolderBase]: 4383/8031 cut-off events. [2023-08-26 20:48:38,425 INFO L125 PetriNetUnfolderBase]: For 24772/24772 co-relation queries the response was YES. [2023-08-26 20:48:38,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31656 conditions, 8031 events. 4383/8031 cut-off events. For 24772/24772 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 46102 event pairs, 893 based on Foata normal form. 0/8019 useless extension candidates. Maximal degree in co-relation 31420. Up to 2212 conditions per place. [2023-08-26 20:48:38,472 INFO L140 encePairwiseOnDemand]: 321/342 looper letters, 193 selfloop transitions, 151 changer transitions 0/345 dead transitions. [2023-08-26 20:48:38,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 345 transitions, 3738 flow [2023-08-26 20:48:38,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-26 20:48:38,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-26 20:48:38,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2959 transitions. [2023-08-26 20:48:38,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32044617717132334 [2023-08-26 20:48:38,479 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2959 transitions. [2023-08-26 20:48:38,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2959 transitions. [2023-08-26 20:48:38,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:38,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2959 transitions. [2023-08-26 20:48:38,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 109.5925925925926) internal successors, (2959), 27 states have internal predecessors, (2959), 0 states have call successors, (0), 0 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 20:48:38,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 342.0) internal successors, (9576), 28 states have internal predecessors, (9576), 0 states have call successors, (0), 0 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 20:48:38,497 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 342.0) internal successors, (9576), 28 states have internal predecessors, (9576), 0 states have call successors, (0), 0 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 20:48:38,497 INFO L175 Difference]: Start difference. First operand has 122 places, 125 transitions, 1423 flow. Second operand 27 states and 2959 transitions. [2023-08-26 20:48:38,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 345 transitions, 3738 flow [2023-08-26 20:48:38,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 345 transitions, 3509 flow, removed 77 selfloop flow, removed 7 redundant places. [2023-08-26 20:48:38,568 INFO L231 Difference]: Finished difference. Result has 147 places, 219 transitions, 2660 flow [2023-08-26 20:48:38,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2660, PETRI_PLACES=147, PETRI_TRANSITIONS=219} [2023-08-26 20:48:38,569 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 104 predicate places. [2023-08-26 20:48:38,569 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 219 transitions, 2660 flow [2023-08-26 20:48:38,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.86666666666666) internal successors, (1573), 15 states have internal predecessors, (1573), 0 states have call successors, (0), 0 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 20:48:38,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:38,570 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:38,578 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 20:48:38,775 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,SelfDestructingSolverStorable16 [2023-08-26 20:48:38,776 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:38,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:38,776 INFO L85 PathProgramCache]: Analyzing trace with hash -363086378, now seen corresponding path program 4 times [2023-08-26 20:48:38,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:38,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041900129] [2023-08-26 20:48:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:38,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:39,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:39,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041900129] [2023-08-26 20:48:39,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041900129] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:48:39,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476480753] [2023-08-26 20:48:39,739 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 20:48:39,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:39,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:39,741 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 20:48:39,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 20:48:39,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 20:48:39,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 20:48:39,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-26 20:48:39,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:48:39,924 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-26 20:48:39,925 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-08-26 20:48:40,270 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 20:48:40,322 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-26 20:48:40,712 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-08-26 20:48:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:40,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:48:41,247 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 20:48:41,248 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-26 20:48:41,258 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 20:48:41,258 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-08-26 20:48:41,264 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-08-26 20:48:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 20:48:41,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476480753] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:48:41,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:48:41,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 14] total 46 [2023-08-26 20:48:41,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566826599] [2023-08-26 20:48:41,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:48:41,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-26 20:48:41,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:41,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-26 20:48:41,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2093, Unknown=11, NotChecked=0, Total=2256 [2023-08-26 20:48:41,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-26 20:48:41,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 219 transitions, 2660 flow. Second operand has 48 states, 48 states have (on average 100.75) internal successors, (4836), 48 states have internal predecessors, (4836), 0 states have call successors, (0), 0 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 20:48:41,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:41,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-26 20:48:41,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:53,625 INFO L124 PetriNetUnfolderBase]: 6616/12011 cut-off events. [2023-08-26 20:48:53,625 INFO L125 PetriNetUnfolderBase]: For 45875/45875 co-relation queries the response was YES. [2023-08-26 20:48:53,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51691 conditions, 12011 events. 6616/12011 cut-off events. For 45875/45875 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 72244 event pairs, 716 based on Foata normal form. 82/12087 useless extension candidates. Maximal degree in co-relation 40802. Up to 2187 conditions per place. [2023-08-26 20:48:53,697 INFO L140 encePairwiseOnDemand]: 318/342 looper letters, 456 selfloop transitions, 340 changer transitions 12/809 dead transitions. [2023-08-26 20:48:53,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 809 transitions, 8354 flow [2023-08-26 20:48:53,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-08-26 20:48:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2023-08-26 20:48:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 8232 transitions. [2023-08-26 20:48:53,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30859199280251914 [2023-08-26 20:48:53,709 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 8232 transitions. [2023-08-26 20:48:53,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 8232 transitions. [2023-08-26 20:48:53,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:53,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 8232 transitions. [2023-08-26 20:48:53,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 105.53846153846153) internal successors, (8232), 78 states have internal predecessors, (8232), 0 states have call successors, (0), 0 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 20:48:53,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 342.0) internal successors, (27018), 79 states have internal predecessors, (27018), 0 states have call successors, (0), 0 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 20:48:53,901 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 342.0) internal successors, (27018), 79 states have internal predecessors, (27018), 0 states have call successors, (0), 0 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 20:48:53,901 INFO L175 Difference]: Start difference. First operand has 147 places, 219 transitions, 2660 flow. Second operand 78 states and 8232 transitions. [2023-08-26 20:48:53,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 809 transitions, 8354 flow [2023-08-26 20:48:54,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 809 transitions, 8139 flow, removed 58 selfloop flow, removed 5 redundant places. [2023-08-26 20:48:54,046 INFO L231 Difference]: Finished difference. Result has 230 places, 400 transitions, 5445 flow [2023-08-26 20:48:54,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=5445, PETRI_PLACES=230, PETRI_TRANSITIONS=400} [2023-08-26 20:48:54,046 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2023-08-26 20:48:54,046 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 400 transitions, 5445 flow [2023-08-26 20:48:54,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 100.75) internal successors, (4836), 48 states have internal predecessors, (4836), 0 states have call successors, (0), 0 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 20:48:54,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:54,048 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:54,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-26 20:48:54,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:54,258 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:54,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:54,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1385984681, now seen corresponding path program 2 times [2023-08-26 20:48:54,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:54,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219491135] [2023-08-26 20:48:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:54,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:54,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219491135] [2023-08-26 20:48:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219491135] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:48:54,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:48:54,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 20:48:54,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161606852] [2023-08-26 20:48:54,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:48:54,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 20:48:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:48:54,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 20:48:54,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 20:48:54,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 342 [2023-08-26 20:48:54,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 400 transitions, 5445 flow. Second operand has 7 states, 7 states have (on average 136.71428571428572) internal successors, (957), 7 states have internal predecessors, (957), 0 states have call successors, (0), 0 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 20:48:54,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:48:54,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 342 [2023-08-26 20:48:54,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:48:56,686 INFO L124 PetriNetUnfolderBase]: 5660/10397 cut-off events. [2023-08-26 20:48:56,686 INFO L125 PetriNetUnfolderBase]: For 41079/41079 co-relation queries the response was YES. [2023-08-26 20:48:56,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48117 conditions, 10397 events. 5660/10397 cut-off events. For 41079/41079 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 63317 event pairs, 1410 based on Foata normal form. 128/10525 useless extension candidates. Maximal degree in co-relation 45423. Up to 6468 conditions per place. [2023-08-26 20:48:56,767 INFO L140 encePairwiseOnDemand]: 329/342 looper letters, 213 selfloop transitions, 187 changer transitions 0/401 dead transitions. [2023-08-26 20:48:56,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 401 transitions, 5775 flow [2023-08-26 20:48:56,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 20:48:56,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 20:48:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1130 transitions. [2023-08-26 20:48:56,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130116959064328 [2023-08-26 20:48:56,770 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1130 transitions. [2023-08-26 20:48:56,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1130 transitions. [2023-08-26 20:48:56,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:48:56,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1130 transitions. [2023-08-26 20:48:56,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.25) internal successors, (1130), 8 states have internal predecessors, (1130), 0 states have call successors, (0), 0 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 20:48:56,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 342.0) internal successors, (3078), 9 states have internal predecessors, (3078), 0 states have call successors, (0), 0 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 20:48:56,774 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 342.0) internal successors, (3078), 9 states have internal predecessors, (3078), 0 states have call successors, (0), 0 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 20:48:56,774 INFO L175 Difference]: Start difference. First operand has 230 places, 400 transitions, 5445 flow. Second operand 8 states and 1130 transitions. [2023-08-26 20:48:56,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 401 transitions, 5775 flow [2023-08-26 20:48:56,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 401 transitions, 5093 flow, removed 297 selfloop flow, removed 11 redundant places. [2023-08-26 20:48:56,990 INFO L231 Difference]: Finished difference. Result has 226 places, 353 transitions, 4551 flow [2023-08-26 20:48:56,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=4045, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4551, PETRI_PLACES=226, PETRI_TRANSITIONS=353} [2023-08-26 20:48:56,990 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 183 predicate places. [2023-08-26 20:48:56,990 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 353 transitions, 4551 flow [2023-08-26 20:48:56,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.71428571428572) internal successors, (957), 7 states have internal predecessors, (957), 0 states have call successors, (0), 0 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 20:48:56,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:48:56,991 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:48:56,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 20:48:56,991 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:48:56,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:48:56,991 INFO L85 PathProgramCache]: Analyzing trace with hash 118586386, now seen corresponding path program 1 times [2023-08-26 20:48:56,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:48:56,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388364403] [2023-08-26 20:48:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:56,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:48:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:48:58,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:48:58,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388364403] [2023-08-26 20:48:58,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388364403] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:48:58,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529269243] [2023-08-26 20:48:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:48:58,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:48:58,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:48:58,979 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 20:48:58,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 20:48:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:48:59,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 71 conjunts are in the unsatisfiable core [2023-08-26 20:48:59,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:48:59,501 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 20:48:59,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 20:48:59,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2023-08-26 20:49:00,234 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2023-08-26 20:49:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:00,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:49:01,791 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-26 20:49:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:01,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529269243] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:49:01,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:49:01,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2023-08-26 20:49:01,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959573303] [2023-08-26 20:49:01,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:49:01,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-26 20:49:01,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-26 20:49:01,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=3036, Unknown=0, NotChecked=0, Total=3306 [2023-08-26 20:49:01,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-26 20:49:01,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 353 transitions, 4551 flow. Second operand has 58 states, 58 states have (on average 100.91379310344827) internal successors, (5853), 58 states have internal predecessors, (5853), 0 states have call successors, (0), 0 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 20:49:01,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:01,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-26 20:49:01,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:31,820 INFO L124 PetriNetUnfolderBase]: 10144/18579 cut-off events. [2023-08-26 20:49:31,820 INFO L125 PetriNetUnfolderBase]: For 57733/57733 co-relation queries the response was YES. [2023-08-26 20:49:31,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84191 conditions, 18579 events. 10144/18579 cut-off events. For 57733/57733 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 127940 event pairs, 1405 based on Foata normal form. 12/18591 useless extension candidates. Maximal degree in co-relation 77747. Up to 3335 conditions per place. [2023-08-26 20:49:31,956 INFO L140 encePairwiseOnDemand]: 322/342 looper letters, 615 selfloop transitions, 534 changer transitions 15/1165 dead transitions. [2023-08-26 20:49:31,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 1165 transitions, 13241 flow [2023-08-26 20:49:31,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-08-26 20:49:31,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2023-08-26 20:49:31,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 10559 transitions. [2023-08-26 20:49:31,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30874269005847954 [2023-08-26 20:49:31,972 INFO L72 ComplementDD]: Start complementDD. Operand 100 states and 10559 transitions. [2023-08-26 20:49:31,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 100 states and 10559 transitions. [2023-08-26 20:49:31,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:49:31,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 100 states and 10559 transitions. [2023-08-26 20:49:31,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 101 states, 100 states have (on average 105.59) internal successors, (10559), 100 states have internal predecessors, (10559), 0 states have call successors, (0), 0 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 20:49:32,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 101 states, 101 states have (on average 342.0) internal successors, (34542), 101 states have internal predecessors, (34542), 0 states have call successors, (0), 0 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 20:49:32,038 INFO L81 ComplementDD]: Finished complementDD. Result has 101 states, 101 states have (on average 342.0) internal successors, (34542), 101 states have internal predecessors, (34542), 0 states have call successors, (0), 0 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 20:49:32,038 INFO L175 Difference]: Start difference. First operand has 226 places, 353 transitions, 4551 flow. Second operand 100 states and 10559 transitions. [2023-08-26 20:49:32,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 1165 transitions, 13241 flow [2023-08-26 20:49:32,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 1165 transitions, 12850 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-26 20:49:32,382 INFO L231 Difference]: Finished difference. Result has 333 places, 639 transitions, 9345 flow [2023-08-26 20:49:32,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=9345, PETRI_PLACES=333, PETRI_TRANSITIONS=639} [2023-08-26 20:49:32,383 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 290 predicate places. [2023-08-26 20:49:32,383 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 639 transitions, 9345 flow [2023-08-26 20:49:32,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 100.91379310344827) internal successors, (5853), 58 states have internal predecessors, (5853), 0 states have call successors, (0), 0 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 20:49:32,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:49:32,384 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:49:32,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 20:49:32,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:49:32,590 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:49:32,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:49:32,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1244370296, now seen corresponding path program 2 times [2023-08-26 20:49:32,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:49:32,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630709258] [2023-08-26 20:49:32,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:49:32,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:49:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:49:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:33,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:49:33,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630709258] [2023-08-26 20:49:33,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630709258] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:49:33,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143521107] [2023-08-26 20:49:33,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 20:49:33,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:49:33,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:49:33,882 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 20:49:33,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 20:49:34,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 20:49:34,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 20:49:34,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 88 conjunts are in the unsatisfiable core [2023-08-26 20:49:34,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:49:34,104 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 20:49:34,105 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-08-26 20:49:34,301 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 20:49:34,344 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-26 20:49:34,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 20:49:34,609 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-08-26 20:49:35,102 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-08-26 20:49:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:35,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:49:36,006 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_766 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_766) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2023-08-26 20:49:36,012 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 20:49:36,012 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-26 20:49:36,019 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 20:49:36,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-08-26 20:49:36,022 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-08-26 20:49:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:49:36,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143521107] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:49:36,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:49:36,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 20] total 62 [2023-08-26 20:49:36,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681952715] [2023-08-26 20:49:36,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:49:36,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-08-26 20:49:36,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:49:36,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-08-26 20:49:36,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3672, Unknown=1, NotChecked=122, Total=4032 [2023-08-26 20:49:36,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-26 20:49:36,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 639 transitions, 9345 flow. Second operand has 64 states, 64 states have (on average 100.734375) internal successors, (6447), 64 states have internal predecessors, (6447), 0 states have call successors, (0), 0 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 20:49:36,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:49:36,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-26 20:49:36,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:49:59,827 INFO L124 PetriNetUnfolderBase]: 13488/24791 cut-off events. [2023-08-26 20:49:59,827 INFO L125 PetriNetUnfolderBase]: For 100792/100792 co-relation queries the response was YES. [2023-08-26 20:50:00,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120518 conditions, 24791 events. 13488/24791 cut-off events. For 100792/100792 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 179688 event pairs, 1180 based on Foata normal form. 206/24997 useless extension candidates. Maximal degree in co-relation 120211. Up to 4722 conditions per place. [2023-08-26 20:50:00,081 INFO L140 encePairwiseOnDemand]: 321/342 looper letters, 447 selfloop transitions, 955 changer transitions 77/1480 dead transitions. [2023-08-26 20:50:00,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 1480 transitions, 20301 flow [2023-08-26 20:50:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-08-26 20:50:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2023-08-26 20:50:00,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 12537 transitions. [2023-08-26 20:50:00,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30548245614035086 [2023-08-26 20:50:00,097 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 12537 transitions. [2023-08-26 20:50:00,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 12537 transitions. [2023-08-26 20:50:00,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:50:00,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 12537 transitions. [2023-08-26 20:50:00,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 104.475) internal successors, (12537), 120 states have internal predecessors, (12537), 0 states have call successors, (0), 0 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 20:50:00,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 342.0) internal successors, (41382), 121 states have internal predecessors, (41382), 0 states have call successors, (0), 0 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 20:50:00,154 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 342.0) internal successors, (41382), 121 states have internal predecessors, (41382), 0 states have call successors, (0), 0 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 20:50:00,155 INFO L175 Difference]: Start difference. First operand has 333 places, 639 transitions, 9345 flow. Second operand 120 states and 12537 transitions. [2023-08-26 20:50:00,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 1480 transitions, 20301 flow [2023-08-26 20:50:00,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1480 transitions, 19799 flow, removed 122 selfloop flow, removed 14 redundant places. [2023-08-26 20:50:00,698 INFO L231 Difference]: Finished difference. Result has 447 places, 1011 transitions, 16954 flow [2023-08-26 20:50:00,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=8830, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=120, PETRI_FLOW=16954, PETRI_PLACES=447, PETRI_TRANSITIONS=1011} [2023-08-26 20:50:00,698 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 404 predicate places. [2023-08-26 20:50:00,698 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 1011 transitions, 16954 flow [2023-08-26 20:50:00,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 100.734375) internal successors, (6447), 64 states have internal predecessors, (6447), 0 states have call successors, (0), 0 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 20:50:00,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:50:00,699 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:50:00,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 20:50:00,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:50:00,901 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:50:00,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:50:00,901 INFO L85 PathProgramCache]: Analyzing trace with hash -358638984, now seen corresponding path program 2 times [2023-08-26 20:50:00,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:50:00,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346387906] [2023-08-26 20:50:00,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:50:00,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:50:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:50:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:50:01,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:50:01,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346387906] [2023-08-26 20:50:01,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346387906] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:50:01,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770521311] [2023-08-26 20:50:01,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 20:50:01,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:50:01,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:50:01,057 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 20:50:01,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 20:50:01,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 20:50:01,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 20:50:01,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 20:50:01,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:50:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:50:01,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:50:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:50:01,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770521311] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:50:01,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:50:01,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-26 20:50:01,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004160192] [2023-08-26 20:50:01,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:50:01,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 20:50:01,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:50:01,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 20:50:01,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-08-26 20:50:01,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 342 [2023-08-26 20:50:01,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1011 transitions, 16954 flow. Second operand has 20 states, 20 states have (on average 141.25) internal successors, (2825), 20 states have internal predecessors, (2825), 0 states have call successors, (0), 0 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 20:50:01,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:50:01,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 342 [2023-08-26 20:50:01,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:50:08,975 INFO L124 PetriNetUnfolderBase]: 14085/26174 cut-off events. [2023-08-26 20:50:08,976 INFO L125 PetriNetUnfolderBase]: For 124088/124088 co-relation queries the response was YES. [2023-08-26 20:50:09,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132292 conditions, 26174 events. 14085/26174 cut-off events. For 124088/124088 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 192889 event pairs, 3290 based on Foata normal form. 616/26790 useless extension candidates. Maximal degree in co-relation 126062. Up to 5677 conditions per place. [2023-08-26 20:50:09,322 INFO L140 encePairwiseOnDemand]: 332/342 looper letters, 1038 selfloop transitions, 517 changer transitions 9/1565 dead transitions. [2023-08-26 20:50:09,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1565 transitions, 25402 flow [2023-08-26 20:50:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 20:50:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 20:50:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3392 transitions. [2023-08-26 20:50:09,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312229849987287 [2023-08-26 20:50:09,325 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3392 transitions. [2023-08-26 20:50:09,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3392 transitions. [2023-08-26 20:50:09,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:50:09,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3392 transitions. [2023-08-26 20:50:09,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 147.47826086956522) internal successors, (3392), 23 states have internal predecessors, (3392), 0 states have call successors, (0), 0 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 20:50:09,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 342.0) internal successors, (8208), 24 states have internal predecessors, (8208), 0 states have call successors, (0), 0 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 20:50:09,335 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 342.0) internal successors, (8208), 24 states have internal predecessors, (8208), 0 states have call successors, (0), 0 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 20:50:09,335 INFO L175 Difference]: Start difference. First operand has 447 places, 1011 transitions, 16954 flow. Second operand 23 states and 3392 transitions. [2023-08-26 20:50:09,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 1565 transitions, 25402 flow [2023-08-26 20:50:10,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1565 transitions, 23074 flow, removed 501 selfloop flow, removed 28 redundant places. [2023-08-26 20:50:10,050 INFO L231 Difference]: Finished difference. Result has 443 places, 1007 transitions, 15948 flow [2023-08-26 20:50:10,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=12872, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=905, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=415, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=15948, PETRI_PLACES=443, PETRI_TRANSITIONS=1007} [2023-08-26 20:50:10,051 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 400 predicate places. [2023-08-26 20:50:10,051 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 1007 transitions, 15948 flow [2023-08-26 20:50:10,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 141.25) internal successors, (2825), 20 states have internal predecessors, (2825), 0 states have call successors, (0), 0 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 20:50:10,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:50:10,052 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:50:10,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 20:50:10,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-26 20:50:10,252 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:50:10,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:50:10,253 INFO L85 PathProgramCache]: Analyzing trace with hash 192384570, now seen corresponding path program 3 times [2023-08-26 20:50:10,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:50:10,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66571113] [2023-08-26 20:50:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:50:10,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:50:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:50:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 20:50:10,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:50:10,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66571113] [2023-08-26 20:50:10,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66571113] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:50:10,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68322014] [2023-08-26 20:50:10,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 20:50:10,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:50:10,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:50:10,662 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 20:50:10,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 20:50:10,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-26 20:50:10,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 20:50:10,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-26 20:50:10,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:50:11,010 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 20:50:11,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:50:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 20:50:11,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68322014] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:50:11,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:50:11,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2023-08-26 20:50:11,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933897279] [2023-08-26 20:50:11,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:50:11,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 20:50:11,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:50:11,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 20:50:11,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2023-08-26 20:50:11,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 342 [2023-08-26 20:50:11,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 1007 transitions, 15948 flow. Second operand has 25 states, 25 states have (on average 136.12) internal successors, (3403), 25 states have internal predecessors, (3403), 0 states have call successors, (0), 0 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 20:50:11,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:50:11,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 342 [2023-08-26 20:50:11,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:50:19,992 INFO L124 PetriNetUnfolderBase]: 18708/34715 cut-off events. [2023-08-26 20:50:19,992 INFO L125 PetriNetUnfolderBase]: For 134633/134633 co-relation queries the response was YES. [2023-08-26 20:50:20,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173993 conditions, 34715 events. 18708/34715 cut-off events. For 134633/134633 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 255078 event pairs, 4666 based on Foata normal form. 158/34873 useless extension candidates. Maximal degree in co-relation 159163. Up to 6613 conditions per place. [2023-08-26 20:50:20,629 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 1542 selfloop transitions, 607 changer transitions 9/2159 dead transitions. [2023-08-26 20:50:20,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 2159 transitions, 33687 flow [2023-08-26 20:50:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-26 20:50:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-26 20:50:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4289 transitions. [2023-08-26 20:50:20,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41803118908382064 [2023-08-26 20:50:20,634 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4289 transitions. [2023-08-26 20:50:20,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4289 transitions. [2023-08-26 20:50:20,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:50:20,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4289 transitions. [2023-08-26 20:50:20,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 142.96666666666667) internal successors, (4289), 30 states have internal predecessors, (4289), 0 states have call successors, (0), 0 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 20:50:20,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 342.0) internal successors, (10602), 31 states have internal predecessors, (10602), 0 states have call successors, (0), 0 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 20:50:20,651 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 342.0) internal successors, (10602), 31 states have internal predecessors, (10602), 0 states have call successors, (0), 0 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 20:50:20,651 INFO L175 Difference]: Start difference. First operand has 443 places, 1007 transitions, 15948 flow. Second operand 30 states and 4289 transitions. [2023-08-26 20:50:20,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 2159 transitions, 33687 flow [2023-08-26 20:50:21,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 2159 transitions, 32821 flow, removed 245 selfloop flow, removed 9 redundant places. [2023-08-26 20:50:21,861 INFO L231 Difference]: Finished difference. Result has 473 places, 1188 transitions, 20764 flow [2023-08-26 20:50:21,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=15391, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1007, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=477, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=20764, PETRI_PLACES=473, PETRI_TRANSITIONS=1188} [2023-08-26 20:50:21,863 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 430 predicate places. [2023-08-26 20:50:21,863 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 1188 transitions, 20764 flow [2023-08-26 20:50:21,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 136.12) internal successors, (3403), 25 states have internal predecessors, (3403), 0 states have call successors, (0), 0 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 20:50:21,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:50:21,864 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:50:21,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-26 20:50:22,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-26 20:50:22,065 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:50:22,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:50:22,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1141465516, now seen corresponding path program 3 times [2023-08-26 20:50:22,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:50:22,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667388839] [2023-08-26 20:50:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:50:22,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:50:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:50:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:50:25,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:50:25,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667388839] [2023-08-26 20:50:25,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667388839] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:50:25,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088512837] [2023-08-26 20:50:25,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 20:50:25,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:50:25,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:50:25,869 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 20:50:25,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 20:50:26,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 20:50:26,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 20:50:26,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 89 conjunts are in the unsatisfiable core [2023-08-26 20:50:26,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:50:26,272 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 20:50:26,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 20:50:26,600 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2023-08-26 20:50:26,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 20:50:26,919 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2023-08-26 20:50:27,541 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2023-08-26 20:50:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:50:27,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:50:34,493 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-26 20:50:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:50:34,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088512837] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:50:34,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:50:34,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 78 [2023-08-26 20:50:34,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744298398] [2023-08-26 20:50:34,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:50:34,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-08-26 20:50:34,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:50:34,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-08-26 20:50:34,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=5716, Unknown=2, NotChecked=0, Total=6162 [2023-08-26 20:50:34,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-26 20:50:34,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 1188 transitions, 20764 flow. Second operand has 79 states, 79 states have (on average 101.0126582278481) internal successors, (7980), 79 states have internal predecessors, (7980), 0 states have call successors, (0), 0 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 20:50:34,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:50:34,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-26 20:50:34,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:52:35,228 WARN L234 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 161 DAG size of output: 142 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 20:55:42,754 INFO L124 PetriNetUnfolderBase]: 33156/61596 cut-off events. [2023-08-26 20:55:42,754 INFO L125 PetriNetUnfolderBase]: For 257069/257069 co-relation queries the response was YES. [2023-08-26 20:55:43,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314688 conditions, 61596 events. 33156/61596 cut-off events. For 257069/257069 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 488516 event pairs, 3691 based on Foata normal form. 66/61662 useless extension candidates. Maximal degree in co-relation 298397. Up to 11579 conditions per place. [2023-08-26 20:55:43,991 INFO L140 encePairwiseOnDemand]: 324/342 looper letters, 1301 selfloop transitions, 1932 changer transitions 209/3443 dead transitions. [2023-08-26 20:55:43,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 3443 transitions, 50181 flow [2023-08-26 20:55:43,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2023-08-26 20:55:43,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2023-08-26 20:55:44,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 30058 transitions. [2023-08-26 20:55:44,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3062330623306233 [2023-08-26 20:55:44,020 INFO L72 ComplementDD]: Start complementDD. Operand 287 states and 30058 transitions. [2023-08-26 20:55:44,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 287 states and 30058 transitions. [2023-08-26 20:55:44,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:44,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 287 states and 30058 transitions. [2023-08-26 20:55:44,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 288 states, 287 states have (on average 104.73170731707317) internal successors, (30058), 287 states have internal predecessors, (30058), 0 states have call successors, (0), 0 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 20:55:44,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 288 states, 288 states have (on average 342.0) internal successors, (98496), 288 states have internal predecessors, (98496), 0 states have call successors, (0), 0 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 20:55:44,136 INFO L81 ComplementDD]: Finished complementDD. Result has 288 states, 288 states have (on average 342.0) internal successors, (98496), 288 states have internal predecessors, (98496), 0 states have call successors, (0), 0 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 20:55:44,137 INFO L175 Difference]: Start difference. First operand has 473 places, 1188 transitions, 20764 flow. Second operand 287 states and 30058 transitions. [2023-08-26 20:55:44,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 3443 transitions, 50181 flow [2023-08-26 20:55:46,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 749 places, 3443 transitions, 49163 flow, removed 241 selfloop flow, removed 10 redundant places. [2023-08-26 20:55:46,610 INFO L231 Difference]: Finished difference. Result has 762 places, 2106 transitions, 40483 flow [2023-08-26 20:55:46,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=20258, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1031, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=287, PETRI_FLOW=40483, PETRI_PLACES=762, PETRI_TRANSITIONS=2106} [2023-08-26 20:55:46,612 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 719 predicate places. [2023-08-26 20:55:46,612 INFO L495 AbstractCegarLoop]: Abstraction has has 762 places, 2106 transitions, 40483 flow [2023-08-26 20:55:46,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 101.0126582278481) internal successors, (7980), 79 states have internal predecessors, (7980), 0 states have call successors, (0), 0 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 20:55:46,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:46,614 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:46,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 20:55:46,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-26 20:55:46,820 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-26 20:55:46,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:46,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1125369112, now seen corresponding path program 4 times [2023-08-26 20:55:46,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:46,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889928316] [2023-08-26 20:55:46,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:46,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:55:52,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:52,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889928316] [2023-08-26 20:55:52,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889928316] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:55:52,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021691516] [2023-08-26 20:55:52,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 20:55:52,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:55:52,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:55:52,393 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 20:55:52,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 20:55:52,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 20:55:52,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 20:55:52,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 103 conjunts are in the unsatisfiable core [2023-08-26 20:55:52,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:55:52,590 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 20:55:52,591 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-08-26 20:55:53,042 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 20:55:53,161 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-26 20:55:53,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 20:55:53,917 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-08-26 20:55:54,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 20:55:54,435 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-08-26 20:55:55,491 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-08-26 20:55:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:55:55,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:55:59,454 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 20:55:59,455 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-26 20:55:59,464 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 20:55:59,464 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-08-26 20:55:59,468 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-08-26 20:56:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:56:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021691516] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:56:00,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:56:00,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 26] total 81 [2023-08-26 20:56:00,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356056254] [2023-08-26 20:56:00,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:56:00,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-08-26 20:56:00,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:56:00,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-08-26 20:56:00,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=6337, Unknown=6, NotChecked=0, Total=6806 [2023-08-26 20:56:00,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-26 20:56:00,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 762 places, 2106 transitions, 40483 flow. Second operand has 83 states, 83 states have (on average 100.91566265060241) internal successors, (8376), 83 states have internal predecessors, (8376), 0 states have call successors, (0), 0 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 20:56:00,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:56:00,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-26 20:56:00,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:57:24,557 WARN L234 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 230 DAG size of output: 128 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 21:00:34,167 WARN L234 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 188 DAG size of output: 104 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 21:01:14,970 WARN L234 SmtUtils]: Spent 7.57s on a formula simplification. DAG size of input: 185 DAG size of output: 103 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 21:01:39,893 WARN L234 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 188 DAG size of output: 105 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-08-26 21:01:47,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-08-26 21:01:47,898 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err2ASSERT_VIOLATIONASSERT (21 of 22 remaining) [2023-08-26 21:01:47,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-26 21:01:47,905 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 21:01:47,905 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 21:01:48,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-26 21:01:48,099 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 224 known predicates. [2023-08-26 21:01:48,100 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 22 remaining) [2023-08-26 21:01:48,101 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 22 remaining) [2023-08-26 21:01:48,101 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err2ASSERT_VIOLATIONASSERT (18 of 22 remaining) [2023-08-26 21:01:48,101 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-26 21:01:48,101 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-26 21:01:48,101 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-26 21:01:48,101 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-26 21:01:48,101 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-26 21:01:48,101 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-26 21:01:48,101 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-26 21:01:48,101 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-26 21:01:48,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err2ASSERT_VIOLATIONASSERT (9 of 22 remaining) [2023-08-26 21:01:48,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err2ASSERT_VIOLATIONASSERT (8 of 22 remaining) [2023-08-26 21:01:48,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-26 21:01:48,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-26 21:01:48,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-26 21:01:48,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-26 21:01:48,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-26 21:01:48,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-26 21:01:48,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-26 21:01:48,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-26 21:01:48,103 INFO L445 BasicCegarLoop]: Path program histogram: [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:01:48,107 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 21:01:48,107 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 21:01:48,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:01:48 BasicIcfg [2023-08-26 21:01:48,109 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 21:01:48,110 INFO L158 Benchmark]: Toolchain (without parser) took 814301.49ms. Allocated memory was 348.1MB in the beginning and 8.8GB in the end (delta: 8.5GB). Free memory was 323.0MB in the beginning and 5.8GB in the end (delta: -5.5GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2023-08-26 21:01:48,110 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 348.1MB. Free memory is still 324.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 21:01:48,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 613.83ms. Allocated memory is still 348.1MB. Free memory was 323.0MB in the beginning and 293.6MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-26 21:01:48,110 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.90ms. Allocated memory is still 348.1MB. Free memory was 293.6MB in the beginning and 290.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:01:48,110 INFO L158 Benchmark]: Boogie Preprocessor took 54.73ms. Allocated memory is still 348.1MB. Free memory was 290.7MB in the beginning and 289.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:01:48,111 INFO L158 Benchmark]: RCFGBuilder took 595.88ms. Allocated memory is still 348.1MB. Free memory was 289.1MB in the beginning and 324.8MB in the end (delta: -35.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-26 21:01:48,111 INFO L158 Benchmark]: TraceAbstraction took 812958.93ms. Allocated memory was 348.1MB in the beginning and 8.8GB in the end (delta: 8.5GB). Free memory was 323.9MB in the beginning and 5.8GB in the end (delta: -5.5GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2023-08-26 21:01:48,112 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 348.1MB. Free memory is still 324.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 613.83ms. Allocated memory is still 348.1MB. Free memory was 323.0MB in the beginning and 293.6MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 72.90ms. Allocated memory is still 348.1MB. Free memory was 293.6MB in the beginning and 290.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 54.73ms. Allocated memory is still 348.1MB. Free memory was 290.7MB in the beginning and 289.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 595.88ms. Allocated memory is still 348.1MB. Free memory was 289.1MB in the beginning and 324.8MB in the end (delta: -35.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 812958.93ms. Allocated memory was 348.1MB in the beginning and 8.8GB in the end (delta: 8.5GB). Free memory was 323.9MB in the beginning and 5.8GB in the end (delta: -5.5GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 753]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [753] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 159 PlacesBefore, 43 PlacesAfterwards, 164 TransitionsBefore, 41 TransitionsAfterwards, 9540 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 112 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 7 ChoiceCompositions, 167 TotalNumberOfCompositions, 14007 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10772, independent: 10556, independent conditional: 0, independent unconditional: 10556, dependent: 216, dependent conditional: 0, dependent unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5647, independent: 5590, independent conditional: 0, independent unconditional: 5590, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10772, independent: 4966, independent conditional: 0, independent unconditional: 4966, dependent: 159, dependent conditional: 0, dependent unconditional: 159, unknown: 5647, unknown conditional: 0, unknown unconditional: 5647] , Statistics on independence cache: Total cache size (in pairs): 242, Positive cache size: 222, Positive conditional cache size: 0, Positive unconditional cache size: 222, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 224 known predicates. - TimeoutResultAtElement [Line: 1021]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 224 known predicates. - TimeoutResultAtElement [Line: 1022]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 224 known predicates. - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 224 known predicates. - TimeoutResultAtElement [Line: 991]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 224 known predicates. - TimeoutResultAtElement [Line: 945]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 224 known predicates. - TimeoutResultAtElement [Line: 991]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 224 known predicates. - TimeoutResultAtElement [Line: 945]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 224 known predicates. - TimeoutResultAtElement [Line: 1005]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 224 known predicates. - TimeoutResultAtElement [Line: 1005]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 224 known predicates. - TimeoutResultAtElement [Line: 949]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 224 known predicates. - TimeoutResultAtElement [Line: 949]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 224 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 280 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 812.8s, OverallIterations: 25, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 761.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 315 mSolverCounterUnknown, 19146 SdHoareTripleChecker+Valid, 118.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19146 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 110.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 624 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 1463 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44900 IncrementalHoareTripleChecker+Invalid, 47302 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1463 mSolverCounterUnsat, 4 mSDtfsCounter, 44900 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1911 GetRequests, 620 SyntacticMatches, 26 SemanticMatches, 1264 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 88367 ImplicationChecksByTransitivity, 601.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40483occurred in iteration=24, InterpolantAutomatonStates: 768, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 41.7s InterpolantComputationTime, 1039 NumberOfCodeBlocks, 1031 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 1330 ConstructedInterpolants, 21 QuantifiedInterpolants, 35714 SizeOfPredicates, 207 NumberOfNonLiveVariables, 4027 ConjunctsInSsa, 527 ConjunctsInUnsatCore, 47 InterpolantComputations, 16 PerfectInterpolantSequences, 161/909 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown