/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/stack_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:28:38,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:28:38,676 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 09:28:38,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:28:38,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:28:38,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:28:38,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:28:38,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:28:38,725 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:28:38,725 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:28:38,725 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:28:38,726 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:28:38,726 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:28:38,726 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:28:38,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:28:38,727 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:28:38,727 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:28:38,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:28:38,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:28:38,728 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:28:38,729 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:28:38,732 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:28:38,732 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:28:38,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:28:38,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:28:38,736 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:28:38,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:28:38,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:28:38,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:28:38,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:28:38,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:28:38,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:28:38,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:28:38,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:28:38,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:28:38,738 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:28:39,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:28:39,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:28:39,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:28:39,063 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:28:39,063 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:28:39,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2023-08-27 09:28:40,151 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:28:40,448 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:28:40,449 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2023-08-27 09:28:40,473 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2646e5c6/b5fd892b214842a29f5361ffdca3083e/FLAG854ffa9b0 [2023-08-27 09:28:40,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2646e5c6/b5fd892b214842a29f5361ffdca3083e [2023-08-27 09:28:40,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:28:40,488 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:28:40,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:28:40,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:28:40,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:28:40,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:28:40" (1/1) ... [2023-08-27 09:28:40,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d1af15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:40, skipping insertion in model container [2023-08-27 09:28:40,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:28:40" (1/1) ... [2023-08-27 09:28:40,552 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:28:40,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:28:40,995 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:28:41,022 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 09:28:41,023 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 09:28:41,028 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-27 09:28:41,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:28:41,115 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:28:41,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:41 WrapperNode [2023-08-27 09:28:41,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:28:41,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:28:41,117 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:28:41,117 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:28:41,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:41" (1/1) ... [2023-08-27 09:28:41,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:41" (1/1) ... [2023-08-27 09:28:41,188 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 163 [2023-08-27 09:28:41,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:28:41,190 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:28:41,190 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:28:41,190 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:28:41,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:41" (1/1) ... [2023-08-27 09:28:41,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:41" (1/1) ... [2023-08-27 09:28:41,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:41" (1/1) ... [2023-08-27 09:28:41,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:41" (1/1) ... [2023-08-27 09:28:41,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:41" (1/1) ... [2023-08-27 09:28:41,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:41" (1/1) ... [2023-08-27 09:28:41,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:41" (1/1) ... [2023-08-27 09:28:41,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:41" (1/1) ... [2023-08-27 09:28:41,245 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:28:41,245 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:28:41,246 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:28:41,246 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:28:41,246 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:41" (1/1) ... [2023-08-27 09:28:41,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:28:41,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:28:41,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 09:28:41,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 09:28:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-27 09:28:41,312 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-27 09:28:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-27 09:28:41,312 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-27 09:28:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:28:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:28:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 09:28:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:28:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 09:28:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:28:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:28:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:28:41,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:28:41,314 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 09:28:41,427 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:28:41,429 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:28:41,719 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:28:41,732 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:28:41,732 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 09:28:41,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:28:41 BoogieIcfgContainer [2023-08-27 09:28:41,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:28:41,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:28:41,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:28:41,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:28:41,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:28:40" (1/3) ... [2023-08-27 09:28:41,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2816e69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:28:41, skipping insertion in model container [2023-08-27 09:28:41,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:28:41" (2/3) ... [2023-08-27 09:28:41,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2816e69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:28:41, skipping insertion in model container [2023-08-27 09:28:41,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:28:41" (3/3) ... [2023-08-27 09:28:41,765 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2023-08-27 09:28:41,780 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:28:41,781 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-27 09:28:41,781 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:28:41,894 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 09:28:41,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 175 transitions, 366 flow [2023-08-27 09:28:41,978 INFO L124 PetriNetUnfolderBase]: 12/173 cut-off events. [2023-08-27 09:28:41,978 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:28:41,985 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. [2023-08-27 09:28:41,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 175 transitions, 366 flow [2023-08-27 09:28:41,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 164 transitions, 337 flow [2023-08-27 09:28:41,992 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:28:42,000 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 164 transitions, 337 flow [2023-08-27 09:28:42,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 164 transitions, 337 flow [2023-08-27 09:28:42,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 164 transitions, 337 flow [2023-08-27 09:28:42,039 INFO L124 PetriNetUnfolderBase]: 12/164 cut-off events. [2023-08-27 09:28:42,039 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 09:28:42,041 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. [2023-08-27 09:28:42,045 INFO L119 LiptonReduction]: Number of co-enabled transitions 9540 [2023-08-27 09:28:46,016 INFO L134 LiptonReduction]: Checked pairs total: 14007 [2023-08-27 09:28:46,016 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-27 09:28:46,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:28:46,032 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;@6f54d5fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:28:46,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-27 09:28:46,036 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:28:46,036 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-27 09:28:46,037 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 09:28:46,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:46,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 09:28:46,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:46,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:46,042 INFO L85 PathProgramCache]: Analyzing trace with hash -91113708, now seen corresponding path program 1 times [2023-08-27 09:28:46,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:46,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282787888] [2023-08-27 09:28:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:46,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:46,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:46,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282787888] [2023-08-27 09:28:46,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282787888] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:46,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:46,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:28:46,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363021455] [2023-08-27 09:28:46,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:46,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:28:46,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:46,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:28:46,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:28:46,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 342 [2023-08-27 09:28:46,360 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) [2023-08-27 09:28:46,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:46,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 342 [2023-08-27 09:28:46,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:46,665 INFO L124 PetriNetUnfolderBase]: 1254/2057 cut-off events. [2023-08-27 09:28:46,665 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-27 09:28:46,670 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. [2023-08-27 09:28:46,681 INFO L140 encePairwiseOnDemand]: 335/342 looper letters, 62 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-27 09:28:46,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 277 flow [2023-08-27 09:28:46,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:28:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:28:46,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-27 09:28:46,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2023-08-27 09:28:46,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-27 09:28:46,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-27 09:28:46,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:46,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-27 09:28:46,706 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) [2023-08-27 09:28:46,710 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) [2023-08-27 09:28:46,711 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) [2023-08-27 09:28:46,712 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 91 flow. Second operand 3 states and 516 transitions. [2023-08-27 09:28:46,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 277 flow [2023-08-27 09:28:46,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 269 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 09:28:46,718 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 107 flow [2023-08-27 09:28:46,719 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} [2023-08-27 09:28:46,722 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2023-08-27 09:28:46,722 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 107 flow [2023-08-27 09:28:46,722 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) [2023-08-27 09:28:46,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:46,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:28:46,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:28:46,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:46,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:46,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1205944391, now seen corresponding path program 1 times [2023-08-27 09:28:46,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:46,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499285304] [2023-08-27 09:28:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:46,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:46,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:46,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499285304] [2023-08-27 09:28:46,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499285304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:46,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:46,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:28:46,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723247392] [2023-08-27 09:28:46,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:46,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:28:46,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:46,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:28:46,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:28:46,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 09:28:46,800 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) [2023-08-27 09:28:46,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:46,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 09:28:46,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:47,084 INFO L124 PetriNetUnfolderBase]: 1725/3028 cut-off events. [2023-08-27 09:28:47,085 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2023-08-27 09:28:47,089 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. [2023-08-27 09:28:47,102 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 70 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-27 09:28:47,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 332 flow [2023-08-27 09:28:47,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:28:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:28:47,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-08-27 09:28:47,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272904483430799 [2023-08-27 09:28:47,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-08-27 09:28:47,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-08-27 09:28:47,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:47,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-08-27 09:28:47,109 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) [2023-08-27 09:28:47,112 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) [2023-08-27 09:28:47,112 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) [2023-08-27 09:28:47,113 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 107 flow. Second operand 3 states and 541 transitions. [2023-08-27 09:28:47,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 332 flow [2023-08-27 09:28:47,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:28:47,118 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 120 flow [2023-08-27 09:28:47,118 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} [2023-08-27 09:28:47,118 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-27 09:28:47,119 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 120 flow [2023-08-27 09:28:47,119 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) [2023-08-27 09:28:47,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:47,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:28:47,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 09:28:47,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:47,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:47,126 INFO L85 PathProgramCache]: Analyzing trace with hash -34630795, now seen corresponding path program 1 times [2023-08-27 09:28:47,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:47,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036814925] [2023-08-27 09:28:47,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:47,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:47,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:47,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036814925] [2023-08-27 09:28:47,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036814925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:47,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:47,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:28:47,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943797005] [2023-08-27 09:28:47,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:47,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:28:47,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:28:47,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:28:47,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 09:28:47,255 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) [2023-08-27 09:28:47,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:47,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 09:28:47,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:47,597 INFO L124 PetriNetUnfolderBase]: 2247/3682 cut-off events. [2023-08-27 09:28:47,597 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2023-08-27 09:28:47,601 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. [2023-08-27 09:28:47,615 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 68 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-27 09:28:47,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 340 flow [2023-08-27 09:28:47,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:28:47,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:28:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-27 09:28:47,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243664717348928 [2023-08-27 09:28:47,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-27 09:28:47,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-27 09:28:47,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:47,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-27 09:28:47,619 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) [2023-08-27 09:28:47,621 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) [2023-08-27 09:28:47,622 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) [2023-08-27 09:28:47,622 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 120 flow. Second operand 3 states and 538 transitions. [2023-08-27 09:28:47,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 340 flow [2023-08-27 09:28:47,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:28:47,626 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 134 flow [2023-08-27 09:28:47,626 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} [2023-08-27 09:28:47,627 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-08-27 09:28:47,628 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 134 flow [2023-08-27 09:28:47,628 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) [2023-08-27 09:28:47,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:47,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:28:47,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 09:28:47,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:47,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:47,629 INFO L85 PathProgramCache]: Analyzing trace with hash -34630820, now seen corresponding path program 1 times [2023-08-27 09:28:47,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:47,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794386427] [2023-08-27 09:28:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:47,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:47,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:47,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794386427] [2023-08-27 09:28:47,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794386427] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:47,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:47,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:28:47,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153709590] [2023-08-27 09:28:47,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:47,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:28:47,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:47,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:28:47,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:28:47,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 09:28:47,695 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) [2023-08-27 09:28:47,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:47,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 09:28:47,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:48,064 INFO L124 PetriNetUnfolderBase]: 2386/3851 cut-off events. [2023-08-27 09:28:48,064 INFO L125 PetriNetUnfolderBase]: For 589/589 co-relation queries the response was YES. [2023-08-27 09:28:48,069 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. [2023-08-27 09:28:48,084 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 60 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-27 09:28:48,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 338 flow [2023-08-27 09:28:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:28:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:28:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-27 09:28:48,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2023-08-27 09:28:48,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-27 09:28:48,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-27 09:28:48,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:48,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-27 09:28:48,089 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) [2023-08-27 09:28:48,091 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) [2023-08-27 09:28:48,091 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) [2023-08-27 09:28:48,091 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 134 flow. Second operand 3 states and 531 transitions. [2023-08-27 09:28:48,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 338 flow [2023-08-27 09:28:48,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:28:48,094 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 170 flow [2023-08-27 09:28:48,094 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} [2023-08-27 09:28:48,095 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2023-08-27 09:28:48,095 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 170 flow [2023-08-27 09:28:48,095 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) [2023-08-27 09:28:48,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:48,095 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:28:48,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 09:28:48,096 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:48,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:48,096 INFO L85 PathProgramCache]: Analyzing trace with hash 28326508, now seen corresponding path program 1 times [2023-08-27 09:28:48,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:48,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571850271] [2023-08-27 09:28:48,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:48,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:48,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:48,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571850271] [2023-08-27 09:28:48,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571850271] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:28:48,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086003989] [2023-08-27 09:28:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:48,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:28:48,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:28:48,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:28:48,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 09:28:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:48,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 09:28:48,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:28:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:48,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:28:48,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086003989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:48,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:28:48,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 09:28:48,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731358612] [2023-08-27 09:28:48,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:48,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:28:48,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:48,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:28:48,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:28:48,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 09:28:48,332 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) [2023-08-27 09:28:48,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:48,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 09:28:48,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:48,676 INFO L124 PetriNetUnfolderBase]: 2074/3553 cut-off events. [2023-08-27 09:28:48,677 INFO L125 PetriNetUnfolderBase]: For 1490/1490 co-relation queries the response was YES. [2023-08-27 09:28:48,682 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. [2023-08-27 09:28:48,698 INFO L140 encePairwiseOnDemand]: 339/342 looper letters, 100 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-08-27 09:28:48,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 104 transitions, 600 flow [2023-08-27 09:28:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:28:48,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:28:48,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 712 transitions. [2023-08-27 09:28:48,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2023-08-27 09:28:48,701 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 712 transitions. [2023-08-27 09:28:48,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 712 transitions. [2023-08-27 09:28:48,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:48,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 712 transitions. [2023-08-27 09:28:48,703 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) [2023-08-27 09:28:48,706 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) [2023-08-27 09:28:48,707 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) [2023-08-27 09:28:48,707 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 170 flow. Second operand 4 states and 712 transitions. [2023-08-27 09:28:48,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 104 transitions, 600 flow [2023-08-27 09:28:48,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 104 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:28:48,716 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 164 flow [2023-08-27 09:28:48,716 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} [2023-08-27 09:28:48,718 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2023-08-27 09:28:48,718 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 164 flow [2023-08-27 09:28:48,719 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) [2023-08-27 09:28:48,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:48,719 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:28:48,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 09:28:48,924 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 [2023-08-27 09:28:48,924 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:48,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:48,924 INFO L85 PathProgramCache]: Analyzing trace with hash 28326621, now seen corresponding path program 1 times [2023-08-27 09:28:48,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:48,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793291537] [2023-08-27 09:28:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:48,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:28:48,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:48,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793291537] [2023-08-27 09:28:48,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793291537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:48,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:48,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:28:48,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685663006] [2023-08-27 09:28:48,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:48,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:28:48,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:48,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:28:48,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:28:48,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 09:28:48,985 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) [2023-08-27 09:28:48,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:48,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 09:28:48,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:49,272 INFO L124 PetriNetUnfolderBase]: 2000/3401 cut-off events. [2023-08-27 09:28:49,273 INFO L125 PetriNetUnfolderBase]: For 1381/1381 co-relation queries the response was YES. [2023-08-27 09:28:49,278 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. [2023-08-27 09:28:49,288 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 63 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-27 09:28:49,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 391 flow [2023-08-27 09:28:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:28:49,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:28:49,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-27 09:28:49,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116959064327485 [2023-08-27 09:28:49,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-27 09:28:49,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-27 09:28:49,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:49,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-27 09:28:49,293 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) [2023-08-27 09:28:49,295 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) [2023-08-27 09:28:49,295 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) [2023-08-27 09:28:49,296 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 164 flow. Second operand 3 states and 525 transitions. [2023-08-27 09:28:49,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 391 flow [2023-08-27 09:28:49,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:28:49,298 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 173 flow [2023-08-27 09:28:49,299 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} [2023-08-27 09:28:49,299 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2023-08-27 09:28:49,299 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 173 flow [2023-08-27 09:28:49,299 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) [2023-08-27 09:28:49,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:49,300 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:28:49,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 09:28:49,300 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:49,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:49,300 INFO L85 PathProgramCache]: Analyzing trace with hash -893196287, now seen corresponding path program 1 times [2023-08-27 09:28:49,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:49,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607115007] [2023-08-27 09:28:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:49,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:49,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:49,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607115007] [2023-08-27 09:28:49,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607115007] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:28:49,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865264078] [2023-08-27 09:28:49,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:49,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:28:49,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:28:49,368 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:28:49,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 09:28:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:49,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 09:28:49,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:28:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:49,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:28:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:49,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865264078] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:28:49,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:28:49,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-27 09:28:49,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830845787] [2023-08-27 09:28:49,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:28:49,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 09:28:49,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:49,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 09:28:49,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-27 09:28:49,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-27 09:28:49,549 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) [2023-08-27 09:28:49,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:49,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-27 09:28:49,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:50,359 INFO L124 PetriNetUnfolderBase]: 4546/7433 cut-off events. [2023-08-27 09:28:50,359 INFO L125 PetriNetUnfolderBase]: For 4672/4672 co-relation queries the response was YES. [2023-08-27 09:28:50,371 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. [2023-08-27 09:28:50,401 INFO L140 encePairwiseOnDemand]: 330/342 looper letters, 232 selfloop transitions, 40 changer transitions 0/273 dead transitions. [2023-08-27 09:28:50,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 273 transitions, 1577 flow [2023-08-27 09:28:50,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 09:28:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 09:28:50,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2254 transitions. [2023-08-27 09:28:50,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2023-08-27 09:28:50,408 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2254 transitions. [2023-08-27 09:28:50,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2254 transitions. [2023-08-27 09:28:50,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:50,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2254 transitions. [2023-08-27 09:28:50,413 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) [2023-08-27 09:28:50,420 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) [2023-08-27 09:28:50,421 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) [2023-08-27 09:28:50,421 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 173 flow. Second operand 14 states and 2254 transitions. [2023-08-27 09:28:50,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 273 transitions, 1577 flow [2023-08-27 09:28:50,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 273 transitions, 1531 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:28:50,441 INFO L231 Difference]: Finished difference. Result has 71 places, 85 transitions, 496 flow [2023-08-27 09:28:50,441 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} [2023-08-27 09:28:50,441 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2023-08-27 09:28:50,442 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 85 transitions, 496 flow [2023-08-27 09:28:50,442 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) [2023-08-27 09:28:50,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:50,442 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:28:50,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 09:28:50,648 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 [2023-08-27 09:28:50,648 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:50,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:50,649 INFO L85 PathProgramCache]: Analyzing trace with hash 630126791, now seen corresponding path program 1 times [2023-08-27 09:28:50,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:50,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062519104] [2023-08-27 09:28:50,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:50,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:50,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:50,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062519104] [2023-08-27 09:28:50,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062519104] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:28:50,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639337358] [2023-08-27 09:28:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:50,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:28:50,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:28:50,717 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:28:50,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 09:28:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:50,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 09:28:50,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:28:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:50,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:28:50,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639337358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:50,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:28:50,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-27 09:28:50,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134508149] [2023-08-27 09:28:50,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:50,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:28:50,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:50,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:28:50,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:28:50,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-27 09:28:50,848 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) [2023-08-27 09:28:50,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:50,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-27 09:28:50,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:51,743 INFO L124 PetriNetUnfolderBase]: 5121/8506 cut-off events. [2023-08-27 09:28:51,744 INFO L125 PetriNetUnfolderBase]: For 12491/12491 co-relation queries the response was YES. [2023-08-27 09:28:51,768 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. [2023-08-27 09:28:51,802 INFO L140 encePairwiseOnDemand]: 330/342 looper letters, 152 selfloop transitions, 38 changer transitions 0/191 dead transitions. [2023-08-27 09:28:51,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 191 transitions, 1398 flow [2023-08-27 09:28:51,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 09:28:51,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 09:28:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1135 transitions. [2023-08-27 09:28:51,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4741019214703425 [2023-08-27 09:28:51,806 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1135 transitions. [2023-08-27 09:28:51,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1135 transitions. [2023-08-27 09:28:51,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:51,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1135 transitions. [2023-08-27 09:28:51,809 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) [2023-08-27 09:28:51,812 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) [2023-08-27 09:28:51,812 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) [2023-08-27 09:28:51,812 INFO L175 Difference]: Start difference. First operand has 71 places, 85 transitions, 496 flow. Second operand 7 states and 1135 transitions. [2023-08-27 09:28:51,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 191 transitions, 1398 flow [2023-08-27 09:28:51,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 191 transitions, 1380 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 09:28:51,841 INFO L231 Difference]: Finished difference. Result has 79 places, 102 transitions, 825 flow [2023-08-27 09:28:51,841 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} [2023-08-27 09:28:51,841 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-08-27 09:28:51,842 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 102 transitions, 825 flow [2023-08-27 09:28:51,842 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) [2023-08-27 09:28:51,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:51,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 09:28:51,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 09:28:52,047 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 [2023-08-27 09:28:52,048 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:52,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:52,048 INFO L85 PathProgramCache]: Analyzing trace with hash -38520247, now seen corresponding path program 1 times [2023-08-27 09:28:52,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:52,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452096888] [2023-08-27 09:28:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:52,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:52,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:52,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452096888] [2023-08-27 09:28:52,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452096888] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:52,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:52,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:28:52,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15726199] [2023-08-27 09:28:52,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:52,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:28:52,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:52,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:28:52,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:28:52,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 09:28:52,122 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) [2023-08-27 09:28:52,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:52,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 09:28:52,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:52,780 INFO L124 PetriNetUnfolderBase]: 4552/7689 cut-off events. [2023-08-27 09:28:52,781 INFO L125 PetriNetUnfolderBase]: For 17785/17785 co-relation queries the response was YES. [2023-08-27 09:28:52,799 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. [2023-08-27 09:28:52,827 INFO L140 encePairwiseOnDemand]: 340/342 looper letters, 100 selfloop transitions, 1 changer transitions 0/109 dead transitions. [2023-08-27 09:28:52,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 1054 flow [2023-08-27 09:28:52,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:28:52,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:28:52,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-27 09:28:52,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49902534113060426 [2023-08-27 09:28:52,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-27 09:28:52,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-27 09:28:52,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:52,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-27 09:28:52,831 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) [2023-08-27 09:28:52,832 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) [2023-08-27 09:28:52,832 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) [2023-08-27 09:28:52,832 INFO L175 Difference]: Start difference. First operand has 79 places, 102 transitions, 825 flow. Second operand 3 states and 512 transitions. [2023-08-27 09:28:52,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 1054 flow [2023-08-27 09:28:52,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 1038 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 09:28:52,871 INFO L231 Difference]: Finished difference. Result has 78 places, 100 transitions, 799 flow [2023-08-27 09:28:52,872 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} [2023-08-27 09:28:52,872 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2023-08-27 09:28:52,872 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 100 transitions, 799 flow [2023-08-27 09:28:52,873 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) [2023-08-27 09:28:52,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:52,873 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 09:28:52,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 09:28:52,873 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:52,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:52,873 INFO L85 PathProgramCache]: Analyzing trace with hash -38520246, now seen corresponding path program 1 times [2023-08-27 09:28:52,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:52,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105633130] [2023-08-27 09:28:52,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:52,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:28:52,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:52,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105633130] [2023-08-27 09:28:52,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105633130] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:52,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:52,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:28:52,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399357778] [2023-08-27 09:28:52,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:52,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:28:52,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:52,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:28:52,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:28:52,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 09:28:52,922 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) [2023-08-27 09:28:52,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:52,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 09:28:52,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:53,509 INFO L124 PetriNetUnfolderBase]: 4112/6983 cut-off events. [2023-08-27 09:28:53,509 INFO L125 PetriNetUnfolderBase]: For 16069/16083 co-relation queries the response was YES. [2023-08-27 09:28:53,526 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. [2023-08-27 09:28:53,549 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 114 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2023-08-27 09:28:53,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 1210 flow [2023-08-27 09:28:53,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:28:53,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:28:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2023-08-27 09:28:53,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5097465886939572 [2023-08-27 09:28:53,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2023-08-27 09:28:53,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2023-08-27 09:28:53,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:53,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2023-08-27 09:28:53,553 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) [2023-08-27 09:28:53,555 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) [2023-08-27 09:28:53,555 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) [2023-08-27 09:28:53,555 INFO L175 Difference]: Start difference. First operand has 78 places, 100 transitions, 799 flow. Second operand 3 states and 523 transitions. [2023-08-27 09:28:53,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 1210 flow [2023-08-27 09:28:53,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 1201 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 09:28:53,587 INFO L231 Difference]: Finished difference. Result has 79 places, 99 transitions, 801 flow [2023-08-27 09:28:53,587 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} [2023-08-27 09:28:53,587 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-08-27 09:28:53,588 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 99 transitions, 801 flow [2023-08-27 09:28:53,588 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) [2023-08-27 09:28:53,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:53,588 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] [2023-08-27 09:28:53,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 09:28:53,588 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:53,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:53,589 INFO L85 PathProgramCache]: Analyzing trace with hash -333694767, now seen corresponding path program 1 times [2023-08-27 09:28:53,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:53,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390588964] [2023-08-27 09:28:53,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:53,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:53,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:53,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:53,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390588964] [2023-08-27 09:28:53,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390588964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:53,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:53,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:28:53,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018354082] [2023-08-27 09:28:53,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:53,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:28:53,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:53,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:28:53,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:28:53,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 342 [2023-08-27 09:28:53,652 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) [2023-08-27 09:28:53,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:53,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 342 [2023-08-27 09:28:53,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:53,850 INFO L124 PetriNetUnfolderBase]: 1208/2207 cut-off events. [2023-08-27 09:28:53,850 INFO L125 PetriNetUnfolderBase]: For 4162/4162 co-relation queries the response was YES. [2023-08-27 09:28:53,854 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. [2023-08-27 09:28:53,857 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 63 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2023-08-27 09:28:53,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 663 flow [2023-08-27 09:28:53,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:28:53,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:28:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-27 09:28:53,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48635477582846004 [2023-08-27 09:28:53,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-27 09:28:53,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-27 09:28:53,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:53,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-27 09:28:53,861 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) [2023-08-27 09:28:53,862 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) [2023-08-27 09:28:53,863 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) [2023-08-27 09:28:53,863 INFO L175 Difference]: Start difference. First operand has 79 places, 99 transitions, 801 flow. Second operand 3 states and 499 transitions. [2023-08-27 09:28:53,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 663 flow [2023-08-27 09:28:53,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 609 flow, removed 15 selfloop flow, removed 8 redundant places. [2023-08-27 09:28:53,875 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 436 flow [2023-08-27 09:28:53,876 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} [2023-08-27 09:28:53,876 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2023-08-27 09:28:53,876 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 436 flow [2023-08-27 09:28:53,876 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) [2023-08-27 09:28:53,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:53,877 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] [2023-08-27 09:28:53,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 09:28:53,877 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:53,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:53,877 INFO L85 PathProgramCache]: Analyzing trace with hash -434025252, now seen corresponding path program 1 times [2023-08-27 09:28:53,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:53,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655852477] [2023-08-27 09:28:53,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:53,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:54,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:54,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655852477] [2023-08-27 09:28:54,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655852477] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:54,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:54,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-27 09:28:54,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990250158] [2023-08-27 09:28:54,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:54,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 09:28:54,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:54,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 09:28:54,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-27 09:28:54,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 342 [2023-08-27 09:28:54,425 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) [2023-08-27 09:28:54,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:54,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 342 [2023-08-27 09:28:54,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:55,031 INFO L124 PetriNetUnfolderBase]: 1567/2884 cut-off events. [2023-08-27 09:28:55,032 INFO L125 PetriNetUnfolderBase]: For 3992/3992 co-relation queries the response was YES. [2023-08-27 09:28:55,038 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. [2023-08-27 09:28:55,045 INFO L140 encePairwiseOnDemand]: 332/342 looper letters, 130 selfloop transitions, 11 changer transitions 0/146 dead transitions. [2023-08-27 09:28:55,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 146 transitions, 1089 flow [2023-08-27 09:28:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:28:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:28:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1249 transitions. [2023-08-27 09:28:55,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40578297595841456 [2023-08-27 09:28:55,049 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1249 transitions. [2023-08-27 09:28:55,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1249 transitions. [2023-08-27 09:28:55,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:55,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1249 transitions. [2023-08-27 09:28:55,052 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) [2023-08-27 09:28:55,056 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) [2023-08-27 09:28:55,056 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) [2023-08-27 09:28:55,056 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 436 flow. Second operand 9 states and 1249 transitions. [2023-08-27 09:28:55,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 146 transitions, 1089 flow [2023-08-27 09:28:55,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 146 transitions, 1070 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:28:55,065 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 504 flow [2023-08-27 09:28:55,065 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} [2023-08-27 09:28:55,066 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-08-27 09:28:55,066 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 504 flow [2023-08-27 09:28:55,067 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) [2023-08-27 09:28:55,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:55,067 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] [2023-08-27 09:28:55,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 09:28:55,067 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:55,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:55,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1363493086, now seen corresponding path program 2 times [2023-08-27 09:28:55,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:55,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252601793] [2023-08-27 09:28:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:55,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:55,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252601793] [2023-08-27 09:28:55,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252601793] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:55,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:55,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-27 09:28:55,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921026283] [2023-08-27 09:28:55,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:55,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 09:28:55,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:55,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 09:28:55,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-27 09:28:55,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 342 [2023-08-27 09:28:55,557 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) [2023-08-27 09:28:55,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:55,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 342 [2023-08-27 09:28:55,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:56,234 INFO L124 PetriNetUnfolderBase]: 1850/3399 cut-off events. [2023-08-27 09:28:56,234 INFO L125 PetriNetUnfolderBase]: For 4833/4833 co-relation queries the response was YES. [2023-08-27 09:28:56,242 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. [2023-08-27 09:28:56,248 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 128 selfloop transitions, 16 changer transitions 0/149 dead transitions. [2023-08-27 09:28:56,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 149 transitions, 1150 flow [2023-08-27 09:28:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:28:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:28:56,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1249 transitions. [2023-08-27 09:28:56,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40578297595841456 [2023-08-27 09:28:56,252 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1249 transitions. [2023-08-27 09:28:56,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1249 transitions. [2023-08-27 09:28:56,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:56,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1249 transitions. [2023-08-27 09:28:56,255 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) [2023-08-27 09:28:56,258 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) [2023-08-27 09:28:56,259 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) [2023-08-27 09:28:56,259 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 504 flow. Second operand 9 states and 1249 transitions. [2023-08-27 09:28:56,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 149 transitions, 1150 flow [2023-08-27 09:28:56,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 149 transitions, 1146 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-27 09:28:56,270 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 596 flow [2023-08-27 09:28:56,270 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} [2023-08-27 09:28:56,270 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2023-08-27 09:28:56,271 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 596 flow [2023-08-27 09:28:56,271 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) [2023-08-27 09:28:56,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:56,271 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] [2023-08-27 09:28:56,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 09:28:56,272 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:56,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:56,272 INFO L85 PathProgramCache]: Analyzing trace with hash 829151540, now seen corresponding path program 1 times [2023-08-27 09:28:56,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:56,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288815375] [2023-08-27 09:28:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:56,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:56,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:56,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288815375] [2023-08-27 09:28:56,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288815375] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:28:56,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093343889] [2023-08-27 09:28:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:56,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:28:56,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:28:56,369 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:28:56,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 09:28:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:56,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 09:28:56,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:28:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:28:56,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:28:56,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093343889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:56,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:28:56,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-08-27 09:28:56,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140067243] [2023-08-27 09:28:56,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:56,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:28:56,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:56,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:28:56,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-27 09:28:56,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 342 [2023-08-27 09:28:56,549 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) [2023-08-27 09:28:56,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:56,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 342 [2023-08-27 09:28:56,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:56,993 INFO L124 PetriNetUnfolderBase]: 1806/3315 cut-off events. [2023-08-27 09:28:56,993 INFO L125 PetriNetUnfolderBase]: For 5564/5564 co-relation queries the response was YES. [2023-08-27 09:28:56,999 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. [2023-08-27 09:28:57,003 INFO L140 encePairwiseOnDemand]: 331/342 looper letters, 117 selfloop transitions, 23 changer transitions 0/141 dead transitions. [2023-08-27 09:28:57,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 141 transitions, 1186 flow [2023-08-27 09:28:57,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:28:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:28:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 917 transitions. [2023-08-27 09:28:57,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468810916179337 [2023-08-27 09:28:57,006 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 917 transitions. [2023-08-27 09:28:57,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 917 transitions. [2023-08-27 09:28:57,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:57,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 917 transitions. [2023-08-27 09:28:57,008 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) [2023-08-27 09:28:57,011 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) [2023-08-27 09:28:57,011 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) [2023-08-27 09:28:57,011 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 596 flow. Second operand 6 states and 917 transitions. [2023-08-27 09:28:57,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 141 transitions, 1186 flow [2023-08-27 09:28:57,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 141 transitions, 1154 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-08-27 09:28:57,023 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 740 flow [2023-08-27 09:28:57,024 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} [2023-08-27 09:28:57,024 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2023-08-27 09:28:57,024 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 740 flow [2023-08-27 09:28:57,025 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) [2023-08-27 09:28:57,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:57,025 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] [2023-08-27 09:28:57,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 09:28:57,230 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 [2023-08-27 09:28:57,230 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:57,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:57,231 INFO L85 PathProgramCache]: Analyzing trace with hash 87113741, now seen corresponding path program 1 times [2023-08-27 09:28:57,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:57,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778775610] [2023-08-27 09:28:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:57,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:57,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:57,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778775610] [2023-08-27 09:28:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778775610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:57,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:57,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:28:57,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825388595] [2023-08-27 09:28:57,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:57,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:28:57,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:28:57,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:28:57,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-27 09:28:57,296 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) [2023-08-27 09:28:57,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:57,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-27 09:28:57,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:57,752 INFO L124 PetriNetUnfolderBase]: 2145/3906 cut-off events. [2023-08-27 09:28:57,752 INFO L125 PetriNetUnfolderBase]: For 7190/7190 co-relation queries the response was YES. [2023-08-27 09:28:57,765 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. [2023-08-27 09:28:57,772 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 114 selfloop transitions, 24 changer transitions 0/139 dead transitions. [2023-08-27 09:28:57,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 139 transitions, 1311 flow [2023-08-27 09:28:57,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:28:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:28:57,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 794 transitions. [2023-08-27 09:28:57,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.464327485380117 [2023-08-27 09:28:57,774 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 794 transitions. [2023-08-27 09:28:57,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 794 transitions. [2023-08-27 09:28:57,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:57,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 794 transitions. [2023-08-27 09:28:57,776 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) [2023-08-27 09:28:57,778 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) [2023-08-27 09:28:57,779 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) [2023-08-27 09:28:57,779 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 740 flow. Second operand 5 states and 794 transitions. [2023-08-27 09:28:57,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 139 transitions, 1311 flow [2023-08-27 09:28:57,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 139 transitions, 1307 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-27 09:28:57,796 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 944 flow [2023-08-27 09:28:57,796 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} [2023-08-27 09:28:57,796 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2023-08-27 09:28:57,796 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 944 flow [2023-08-27 09:28:57,797 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) [2023-08-27 09:28:57,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:57,797 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 09:28:57,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 09:28:57,797 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:57,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:57,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2073686424, now seen corresponding path program 1 times [2023-08-27 09:28:57,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:57,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891742010] [2023-08-27 09:28:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:57,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:57,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:57,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891742010] [2023-08-27 09:28:57,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891742010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:28:57,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538570226] [2023-08-27 09:28:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:57,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:28:57,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:28:57,928 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:28:57,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 09:28:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:58,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 09:28:58,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:28:58,103 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:58,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:28:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:58,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538570226] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:28:58,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:28:58,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-27 09:28:58,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439791317] [2023-08-27 09:28:58,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:28:58,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 09:28:58,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:58,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 09:28:58,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-27 09:28:58,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-27 09:28:58,199 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) [2023-08-27 09:28:58,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:58,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-27 09:28:58,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:59,168 INFO L124 PetriNetUnfolderBase]: 3265/5954 cut-off events. [2023-08-27 09:28:59,168 INFO L125 PetriNetUnfolderBase]: For 18623/18623 co-relation queries the response was YES. [2023-08-27 09:28:59,188 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. [2023-08-27 09:28:59,201 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 265 selfloop transitions, 52 changer transitions 3/321 dead transitions. [2023-08-27 09:28:59,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 321 transitions, 2924 flow [2023-08-27 09:28:59,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 09:28:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 09:28:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2683 transitions. [2023-08-27 09:28:59,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46147230822153423 [2023-08-27 09:28:59,205 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2683 transitions. [2023-08-27 09:28:59,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2683 transitions. [2023-08-27 09:28:59,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:59,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2683 transitions. [2023-08-27 09:28:59,210 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) [2023-08-27 09:28:59,216 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) [2023-08-27 09:28:59,217 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) [2023-08-27 09:28:59,218 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 944 flow. Second operand 17 states and 2683 transitions. [2023-08-27 09:28:59,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 321 transitions, 2924 flow [2023-08-27 09:28:59,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 321 transitions, 2903 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 09:28:59,250 INFO L231 Difference]: Finished difference. Result has 122 places, 125 transitions, 1423 flow [2023-08-27 09:28:59,250 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} [2023-08-27 09:28:59,251 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 79 predicate places. [2023-08-27 09:28:59,251 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 125 transitions, 1423 flow [2023-08-27 09:28:59,251 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) [2023-08-27 09:28:59,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:59,252 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] [2023-08-27 09:28:59,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-27 09:28:59,457 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 [2023-08-27 09:28:59,457 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:59,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:59,457 INFO L85 PathProgramCache]: Analyzing trace with hash -928121280, now seen corresponding path program 3 times [2023-08-27 09:28:59,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:59,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450663168] [2023-08-27 09:28:59,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:59,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:29:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:29:00,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:29:00,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450663168] [2023-08-27 09:29:00,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450663168] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:29:00,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914362150] [2023-08-27 09:29:00,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 09:29:00,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:29:00,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:29:00,863 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:29:00,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 09:29:00,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-27 09:29:00,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:29:00,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-27 09:29:00,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:29:01,194 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 [2023-08-27 09:29:01,550 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 [2023-08-27 09:29:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:29:01,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:29:01,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914362150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:29:01,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:29:01,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 32 [2023-08-27 09:29:01,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037063416] [2023-08-27 09:29:01,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:29:01,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 09:29:01,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:29:01,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 09:29:01,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1007, Unknown=0, NotChecked=0, Total=1122 [2023-08-27 09:29:01,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 342 [2023-08-27 09:29:01,626 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) [2023-08-27 09:29:01,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:29:01,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 342 [2023-08-27 09:29:01,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:29:04,284 INFO L124 PetriNetUnfolderBase]: 4383/8031 cut-off events. [2023-08-27 09:29:04,284 INFO L125 PetriNetUnfolderBase]: For 24772/24772 co-relation queries the response was YES. [2023-08-27 09:29:04,317 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. [2023-08-27 09:29:04,334 INFO L140 encePairwiseOnDemand]: 321/342 looper letters, 193 selfloop transitions, 151 changer transitions 0/345 dead transitions. [2023-08-27 09:29:04,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 345 transitions, 3738 flow [2023-08-27 09:29:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-27 09:29:04,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-27 09:29:04,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2959 transitions. [2023-08-27 09:29:04,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32044617717132334 [2023-08-27 09:29:04,339 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2959 transitions. [2023-08-27 09:29:04,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2959 transitions. [2023-08-27 09:29:04,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:29:04,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2959 transitions. [2023-08-27 09:29:04,344 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) [2023-08-27 09:29:04,352 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) [2023-08-27 09:29:04,354 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) [2023-08-27 09:29:04,354 INFO L175 Difference]: Start difference. First operand has 122 places, 125 transitions, 1423 flow. Second operand 27 states and 2959 transitions. [2023-08-27 09:29:04,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 345 transitions, 3738 flow [2023-08-27 09:29:04,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 345 transitions, 3509 flow, removed 77 selfloop flow, removed 7 redundant places. [2023-08-27 09:29:04,420 INFO L231 Difference]: Finished difference. Result has 147 places, 219 transitions, 2660 flow [2023-08-27 09:29:04,421 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} [2023-08-27 09:29:04,421 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 104 predicate places. [2023-08-27 09:29:04,421 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 219 transitions, 2660 flow [2023-08-27 09:29:04,422 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) [2023-08-27 09:29:04,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:29:04,422 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] [2023-08-27 09:29:04,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 09:29:04,627 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 [2023-08-27 09:29:04,627 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:29:04,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:29:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash -363086378, now seen corresponding path program 4 times [2023-08-27 09:29:04,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:29:04,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497135545] [2023-08-27 09:29:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:29:04,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:29:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:29:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:29:05,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:29:05,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497135545] [2023-08-27 09:29:05,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497135545] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:29:05,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150957884] [2023-08-27 09:29:05,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 09:29:05,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:29:05,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:29:05,539 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) [2023-08-27 09:29:05,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 09:29:05,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 09:29:05,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:29:05,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-27 09:29:05,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:29:05,704 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-27 09:29:05,704 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 [2023-08-27 09:29:06,008 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 [2023-08-27 09:29:06,055 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 [2023-08-27 09:29:06,398 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 [2023-08-27 09:29:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:29:06,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:29:06,899 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:29:06,900 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 [2023-08-27 09:29:06,908 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:29:06,908 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 [2023-08-27 09:29:06,915 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 [2023-08-27 09:29:07,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:29:07,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150957884] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:29:07,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:29:07,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 14] total 46 [2023-08-27 09:29:07,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51253901] [2023-08-27 09:29:07,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:29:07,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-27 09:29:07,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:29:07,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-27 09:29:07,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2093, Unknown=11, NotChecked=0, Total=2256 [2023-08-27 09:29:07,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 09:29:07,166 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) [2023-08-27 09:29:07,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:29:07,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 09:29:07,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:29:18,594 INFO L124 PetriNetUnfolderBase]: 6616/12011 cut-off events. [2023-08-27 09:29:18,594 INFO L125 PetriNetUnfolderBase]: For 45875/45875 co-relation queries the response was YES. [2023-08-27 09:29:18,645 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. [2023-08-27 09:29:18,675 INFO L140 encePairwiseOnDemand]: 318/342 looper letters, 456 selfloop transitions, 340 changer transitions 12/809 dead transitions. [2023-08-27 09:29:18,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 809 transitions, 8354 flow [2023-08-27 09:29:18,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-08-27 09:29:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2023-08-27 09:29:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 8232 transitions. [2023-08-27 09:29:18,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30859199280251914 [2023-08-27 09:29:18,683 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 8232 transitions. [2023-08-27 09:29:18,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 8232 transitions. [2023-08-27 09:29:18,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:29:18,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 8232 transitions. [2023-08-27 09:29:18,693 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) [2023-08-27 09:29:18,714 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) [2023-08-27 09:29:18,718 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) [2023-08-27 09:29:18,719 INFO L175 Difference]: Start difference. First operand has 147 places, 219 transitions, 2660 flow. Second operand 78 states and 8232 transitions. [2023-08-27 09:29:18,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 809 transitions, 8354 flow [2023-08-27 09:29:18,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 809 transitions, 8139 flow, removed 58 selfloop flow, removed 5 redundant places. [2023-08-27 09:29:18,879 INFO L231 Difference]: Finished difference. Result has 230 places, 400 transitions, 5445 flow [2023-08-27 09:29:18,879 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} [2023-08-27 09:29:18,880 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2023-08-27 09:29:18,880 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 400 transitions, 5445 flow [2023-08-27 09:29:18,881 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) [2023-08-27 09:29:18,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:29:18,881 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] [2023-08-27 09:29:18,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 09:29:19,081 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 [2023-08-27 09:29:19,082 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:29:19,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:29:19,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1385984681, now seen corresponding path program 2 times [2023-08-27 09:29:19,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:29:19,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137865985] [2023-08-27 09:29:19,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:29:19,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:29:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:29:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:29:19,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:29:19,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137865985] [2023-08-27 09:29:19,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137865985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:29:19,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:29:19,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 09:29:19,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324145590] [2023-08-27 09:29:19,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:29:19,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 09:29:19,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:29:19,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 09:29:19,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:29:19,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 342 [2023-08-27 09:29:19,227 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) [2023-08-27 09:29:19,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:29:19,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 342 [2023-08-27 09:29:19,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:29:21,293 INFO L124 PetriNetUnfolderBase]: 5660/10397 cut-off events. [2023-08-27 09:29:21,293 INFO L125 PetriNetUnfolderBase]: For 41079/41079 co-relation queries the response was YES. [2023-08-27 09:29:21,336 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. [2023-08-27 09:29:21,357 INFO L140 encePairwiseOnDemand]: 329/342 looper letters, 213 selfloop transitions, 187 changer transitions 0/401 dead transitions. [2023-08-27 09:29:21,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 401 transitions, 5775 flow [2023-08-27 09:29:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 09:29:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 09:29:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1130 transitions. [2023-08-27 09:29:21,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130116959064328 [2023-08-27 09:29:21,359 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1130 transitions. [2023-08-27 09:29:21,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1130 transitions. [2023-08-27 09:29:21,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:29:21,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1130 transitions. [2023-08-27 09:29:21,361 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) [2023-08-27 09:29:21,363 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) [2023-08-27 09:29:21,363 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) [2023-08-27 09:29:21,363 INFO L175 Difference]: Start difference. First operand has 230 places, 400 transitions, 5445 flow. Second operand 8 states and 1130 transitions. [2023-08-27 09:29:21,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 401 transitions, 5775 flow [2023-08-27 09:29:21,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 401 transitions, 5093 flow, removed 297 selfloop flow, removed 11 redundant places. [2023-08-27 09:29:21,589 INFO L231 Difference]: Finished difference. Result has 226 places, 353 transitions, 4551 flow [2023-08-27 09:29:21,590 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} [2023-08-27 09:29:21,590 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 183 predicate places. [2023-08-27 09:29:21,590 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 353 transitions, 4551 flow [2023-08-27 09:29:21,591 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) [2023-08-27 09:29:21,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:29:21,591 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] [2023-08-27 09:29:21,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 09:29:21,591 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:29:21,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:29:21,591 INFO L85 PathProgramCache]: Analyzing trace with hash 118586386, now seen corresponding path program 1 times [2023-08-27 09:29:21,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:29:21,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507169568] [2023-08-27 09:29:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:29:21,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:29:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:29:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:29:23,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:29:23,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507169568] [2023-08-27 09:29:23,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507169568] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:29:23,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296326340] [2023-08-27 09:29:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:29:23,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:29:23,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:29:23,421 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) [2023-08-27 09:29:23,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 09:29:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:29:23,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 71 conjunts are in the unsatisfiable core [2023-08-27 09:29:23,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:29:23,846 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 [2023-08-27 09:29:24,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:29:24,105 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 [2023-08-27 09:29:24,493 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 80 treesize of output 32 [2023-08-27 09:29:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:29:24,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:29:25,999 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 [2023-08-27 09:29:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:29:26,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296326340] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:29:26,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:29:26,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2023-08-27 09:29:26,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581729539] [2023-08-27 09:29:26,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:29:26,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-27 09:29:26,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:29:26,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-27 09:29:26,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=3036, Unknown=0, NotChecked=0, Total=3306 [2023-08-27 09:29:26,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 09:29:26,219 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) [2023-08-27 09:29:26,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:29:26,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 09:29:26,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:29:55,578 INFO L124 PetriNetUnfolderBase]: 10144/18579 cut-off events. [2023-08-27 09:29:55,578 INFO L125 PetriNetUnfolderBase]: For 57733/57733 co-relation queries the response was YES. [2023-08-27 09:29:55,661 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. [2023-08-27 09:29:55,763 INFO L140 encePairwiseOnDemand]: 322/342 looper letters, 615 selfloop transitions, 534 changer transitions 15/1165 dead transitions. [2023-08-27 09:29:55,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 1165 transitions, 13241 flow [2023-08-27 09:29:55,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-08-27 09:29:55,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2023-08-27 09:29:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 10559 transitions. [2023-08-27 09:29:55,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30874269005847954 [2023-08-27 09:29:55,776 INFO L72 ComplementDD]: Start complementDD. Operand 100 states and 10559 transitions. [2023-08-27 09:29:55,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 100 states and 10559 transitions. [2023-08-27 09:29:55,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:29:55,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 100 states and 10559 transitions. [2023-08-27 09:29:55,790 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) [2023-08-27 09:29:55,819 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) [2023-08-27 09:29:55,823 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) [2023-08-27 09:29:55,823 INFO L175 Difference]: Start difference. First operand has 226 places, 353 transitions, 4551 flow. Second operand 100 states and 10559 transitions. [2023-08-27 09:29:55,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 1165 transitions, 13241 flow [2023-08-27 09:29:56,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 1165 transitions, 12850 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-27 09:29:56,097 INFO L231 Difference]: Finished difference. Result has 333 places, 639 transitions, 9345 flow [2023-08-27 09:29:56,097 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} [2023-08-27 09:29:56,098 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 290 predicate places. [2023-08-27 09:29:56,098 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 639 transitions, 9345 flow [2023-08-27 09:29:56,098 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) [2023-08-27 09:29:56,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:29:56,099 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] [2023-08-27 09:29:56,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 09:29:56,299 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 [2023-08-27 09:29:56,299 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:29:56,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:29:56,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1244370296, now seen corresponding path program 2 times [2023-08-27 09:29:56,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:29:56,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430109697] [2023-08-27 09:29:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:29:56,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:29:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:29:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:29:57,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:29:57,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430109697] [2023-08-27 09:29:57,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430109697] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:29:57,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854671129] [2023-08-27 09:29:57,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 09:29:57,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:29:57,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:29:57,689 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) [2023-08-27 09:29:57,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 09:29:57,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 09:29:57,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:29:57,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 88 conjunts are in the unsatisfiable core [2023-08-27 09:29:57,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:29:57,858 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 09:29:57,858 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 [2023-08-27 09:29:58,087 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 [2023-08-27 09:29:58,143 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 [2023-08-27 09:29:58,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:29:58,448 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 [2023-08-27 09:29:58,918 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 [2023-08-27 09:29:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:29:58,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:29:59,808 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 [2023-08-27 09:29:59,816 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:29:59,816 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 [2023-08-27 09:29:59,823 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:29:59,823 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 [2023-08-27 09:29:59,827 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 [2023-08-27 09:30:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:30:00,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854671129] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:30:00,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:30:00,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 20] total 62 [2023-08-27 09:30:00,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170303234] [2023-08-27 09:30:00,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:30:00,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-08-27 09:30:00,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:30:00,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-08-27 09:30:00,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3672, Unknown=1, NotChecked=122, Total=4032 [2023-08-27 09:30:00,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 09:30:00,072 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) [2023-08-27 09:30:00,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:30:00,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 09:30:00,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:30:24,209 INFO L124 PetriNetUnfolderBase]: 13488/24791 cut-off events. [2023-08-27 09:30:24,209 INFO L125 PetriNetUnfolderBase]: For 100792/100792 co-relation queries the response was YES. [2023-08-27 09:30:24,393 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. [2023-08-27 09:30:24,461 INFO L140 encePairwiseOnDemand]: 321/342 looper letters, 447 selfloop transitions, 955 changer transitions 77/1480 dead transitions. [2023-08-27 09:30:24,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 1480 transitions, 20301 flow [2023-08-27 09:30:24,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-08-27 09:30:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2023-08-27 09:30:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 12537 transitions. [2023-08-27 09:30:24,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30548245614035086 [2023-08-27 09:30:24,480 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 12537 transitions. [2023-08-27 09:30:24,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 12537 transitions. [2023-08-27 09:30:24,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:30:24,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 12537 transitions. [2023-08-27 09:30:24,501 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) [2023-08-27 09:30:24,533 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) [2023-08-27 09:30:24,539 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) [2023-08-27 09:30:24,539 INFO L175 Difference]: Start difference. First operand has 333 places, 639 transitions, 9345 flow. Second operand 120 states and 12537 transitions. [2023-08-27 09:30:24,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 1480 transitions, 20301 flow [2023-08-27 09:30:25,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1480 transitions, 19799 flow, removed 122 selfloop flow, removed 14 redundant places. [2023-08-27 09:30:25,091 INFO L231 Difference]: Finished difference. Result has 447 places, 1011 transitions, 16954 flow [2023-08-27 09:30:25,092 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} [2023-08-27 09:30:25,092 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 404 predicate places. [2023-08-27 09:30:25,092 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 1011 transitions, 16954 flow [2023-08-27 09:30:25,093 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) [2023-08-27 09:30:25,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:30:25,094 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] [2023-08-27 09:30:25,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-27 09:30:25,294 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 [2023-08-27 09:30:25,294 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:30:25,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:30:25,295 INFO L85 PathProgramCache]: Analyzing trace with hash -358638984, now seen corresponding path program 2 times [2023-08-27 09:30:25,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:30:25,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794610550] [2023-08-27 09:30:25,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:30:25,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:30:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:30:25,452 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:30:25,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:30:25,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794610550] [2023-08-27 09:30:25,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794610550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:30:25,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799482294] [2023-08-27 09:30:25,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 09:30:25,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:30:25,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:30:25,457 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) [2023-08-27 09:30:25,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 09:30:25,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 09:30:25,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:30:25,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 09:30:25,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:30:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:30:25,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:30:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:30:25,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799482294] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:30:25,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:30:25,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-27 09:30:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522211267] [2023-08-27 09:30:25,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:30:25,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 09:30:25,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:30:25,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 09:30:25,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-08-27 09:30:25,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 342 [2023-08-27 09:30:25,830 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) [2023-08-27 09:30:25,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:30:25,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 342 [2023-08-27 09:30:25,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:30:32,791 INFO L124 PetriNetUnfolderBase]: 14085/26174 cut-off events. [2023-08-27 09:30:32,791 INFO L125 PetriNetUnfolderBase]: For 124088/124088 co-relation queries the response was YES. [2023-08-27 09:30:32,985 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. [2023-08-27 09:30:33,045 INFO L140 encePairwiseOnDemand]: 332/342 looper letters, 1038 selfloop transitions, 517 changer transitions 9/1565 dead transitions. [2023-08-27 09:30:33,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1565 transitions, 25402 flow [2023-08-27 09:30:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 09:30:33,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 09:30:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3392 transitions. [2023-08-27 09:30:33,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312229849987287 [2023-08-27 09:30:33,048 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3392 transitions. [2023-08-27 09:30:33,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3392 transitions. [2023-08-27 09:30:33,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:30:33,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3392 transitions. [2023-08-27 09:30:33,053 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) [2023-08-27 09:30:33,058 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) [2023-08-27 09:30:33,058 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) [2023-08-27 09:30:33,058 INFO L175 Difference]: Start difference. First operand has 447 places, 1011 transitions, 16954 flow. Second operand 23 states and 3392 transitions. [2023-08-27 09:30:33,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 1565 transitions, 25402 flow [2023-08-27 09:30:33,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1565 transitions, 23074 flow, removed 501 selfloop flow, removed 28 redundant places. [2023-08-27 09:30:33,882 INFO L231 Difference]: Finished difference. Result has 443 places, 1007 transitions, 15948 flow [2023-08-27 09:30:33,883 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} [2023-08-27 09:30:33,883 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 400 predicate places. [2023-08-27 09:30:33,884 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 1007 transitions, 15948 flow [2023-08-27 09:30:33,884 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) [2023-08-27 09:30:33,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:30:33,884 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] [2023-08-27 09:30:33,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 09:30:34,085 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 [2023-08-27 09:30:34,085 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:30:34,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:30:34,086 INFO L85 PathProgramCache]: Analyzing trace with hash 192384570, now seen corresponding path program 3 times [2023-08-27 09:30:34,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:30:34,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120862817] [2023-08-27 09:30:34,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:30:34,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:30:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:30:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 09:30:34,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:30:34,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120862817] [2023-08-27 09:30:34,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120862817] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:30:34,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224943471] [2023-08-27 09:30:34,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 09:30:34,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:30:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:30:34,357 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) [2023-08-27 09:30:34,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 09:30:34,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-27 09:30:34,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:30:34,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 09:30:34,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:30:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 09:30:34,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:30:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 09:30:34,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224943471] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:30:34,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:30:34,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2023-08-27 09:30:34,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91402626] [2023-08-27 09:30:34,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:30:34,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 09:30:34,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:30:34,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 09:30:34,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2023-08-27 09:30:34,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 342 [2023-08-27 09:30:34,850 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) [2023-08-27 09:30:34,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:30:34,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 342 [2023-08-27 09:30:34,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:30:43,604 INFO L124 PetriNetUnfolderBase]: 18708/34715 cut-off events. [2023-08-27 09:30:43,604 INFO L125 PetriNetUnfolderBase]: For 134633/134633 co-relation queries the response was YES. [2023-08-27 09:30:43,922 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. [2023-08-27 09:30:44,178 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 1542 selfloop transitions, 607 changer transitions 9/2159 dead transitions. [2023-08-27 09:30:44,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 2159 transitions, 33687 flow [2023-08-27 09:30:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-27 09:30:44,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-27 09:30:44,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4289 transitions. [2023-08-27 09:30:44,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41803118908382064 [2023-08-27 09:30:44,183 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4289 transitions. [2023-08-27 09:30:44,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4289 transitions. [2023-08-27 09:30:44,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:30:44,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4289 transitions. [2023-08-27 09:30:44,189 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) [2023-08-27 09:30:44,196 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) [2023-08-27 09:30:44,197 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) [2023-08-27 09:30:44,197 INFO L175 Difference]: Start difference. First operand has 443 places, 1007 transitions, 15948 flow. Second operand 30 states and 4289 transitions. [2023-08-27 09:30:44,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 2159 transitions, 33687 flow [2023-08-27 09:30:45,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 2159 transitions, 32821 flow, removed 245 selfloop flow, removed 9 redundant places. [2023-08-27 09:30:45,279 INFO L231 Difference]: Finished difference. Result has 473 places, 1188 transitions, 20764 flow [2023-08-27 09:30:45,280 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} [2023-08-27 09:30:45,281 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 430 predicate places. [2023-08-27 09:30:45,281 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 1188 transitions, 20764 flow [2023-08-27 09:30:45,281 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) [2023-08-27 09:30:45,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:30:45,281 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] [2023-08-27 09:30:45,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-27 09:30:45,485 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 [2023-08-27 09:30:45,485 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:30:45,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:30:45,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1141465516, now seen corresponding path program 3 times [2023-08-27 09:30:45,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:30:45,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812768975] [2023-08-27 09:30:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:30:45,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:30:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:30:49,585 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:30:49,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:30:49,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812768975] [2023-08-27 09:30:49,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812768975] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:30:49,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184435333] [2023-08-27 09:30:49,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 09:30:49,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:30:49,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:30:49,587 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) [2023-08-27 09:30:49,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 09:30:49,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 09:30:49,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:30:49,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 89 conjunts are in the unsatisfiable core [2023-08-27 09:30:49,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:30:50,052 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 [2023-08-27 09:30:50,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:30:50,461 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 [2023-08-27 09:30:50,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:30:50,847 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 [2023-08-27 09:30:51,569 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 [2023-08-27 09:30:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:30:51,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:30:55,877 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 [2023-08-27 09:30:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:30:56,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184435333] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:30:56,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:30:56,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 78 [2023-08-27 09:30:56,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406657080] [2023-08-27 09:30:56,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:30:56,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-08-27 09:30:56,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:30:56,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-08-27 09:30:56,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=5717, Unknown=1, NotChecked=0, Total=6162 [2023-08-27 09:30:56,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 09:30:56,138 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) [2023-08-27 09:30:56,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:30:56,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 09:30:56,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:02,984 INFO L124 PetriNetUnfolderBase]: 33156/61596 cut-off events. [2023-08-27 09:37:02,984 INFO L125 PetriNetUnfolderBase]: For 257069/257069 co-relation queries the response was YES. [2023-08-27 09:37:03,894 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. [2023-08-27 09:37:04,048 INFO L140 encePairwiseOnDemand]: 324/342 looper letters, 1301 selfloop transitions, 1932 changer transitions 209/3443 dead transitions. [2023-08-27 09:37:04,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 3443 transitions, 50181 flow [2023-08-27 09:37:04,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2023-08-27 09:37:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2023-08-27 09:37:04,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 30058 transitions. [2023-08-27 09:37:04,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3062330623306233 [2023-08-27 09:37:04,076 INFO L72 ComplementDD]: Start complementDD. Operand 287 states and 30058 transitions. [2023-08-27 09:37:04,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 287 states and 30058 transitions. [2023-08-27 09:37:04,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:04,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 287 states and 30058 transitions. [2023-08-27 09:37:04,110 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) [2023-08-27 09:37:04,171 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) [2023-08-27 09:37:04,184 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) [2023-08-27 09:37:04,184 INFO L175 Difference]: Start difference. First operand has 473 places, 1188 transitions, 20764 flow. Second operand 287 states and 30058 transitions. [2023-08-27 09:37:04,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 3443 transitions, 50181 flow [2023-08-27 09:37:06,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 749 places, 3443 transitions, 49163 flow, removed 241 selfloop flow, removed 10 redundant places. [2023-08-27 09:37:06,644 INFO L231 Difference]: Finished difference. Result has 762 places, 2106 transitions, 40483 flow [2023-08-27 09:37:06,645 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} [2023-08-27 09:37:06,646 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 719 predicate places. [2023-08-27 09:37:06,646 INFO L495 AbstractCegarLoop]: Abstraction has has 762 places, 2106 transitions, 40483 flow [2023-08-27 09:37:06,647 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) [2023-08-27 09:37:06,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:06,647 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] [2023-08-27 09:37:06,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 09:37:06,857 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 [2023-08-27 09:37:06,857 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:37:06,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:06,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1125369112, now seen corresponding path program 4 times [2023-08-27 09:37:06,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:06,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636986810] [2023-08-27 09:37:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:06,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:37:13,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:13,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636986810] [2023-08-27 09:37:13,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636986810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:37:13,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933225804] [2023-08-27 09:37:13,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 09:37:13,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:37:13,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:37:13,059 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) [2023-08-27 09:37:13,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 09:37:13,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 09:37:13,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:37:13,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 103 conjunts are in the unsatisfiable core [2023-08-27 09:37:13,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:37:13,260 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 09:37:13,261 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 [2023-08-27 09:37:13,676 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 [2023-08-27 09:37:13,771 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 [2023-08-27 09:37:14,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:37:14,388 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 [2023-08-27 09:37:14,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:37:14,963 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 [2023-08-27 09:37:16,416 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 [2023-08-27 09:37:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:37:16,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:37:21,295 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:37:21,295 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 [2023-08-27 09:37:21,308 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 09:37:21,308 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 [2023-08-27 09:37:21,313 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 [2023-08-27 09:37:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:37:21,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933225804] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:37:21,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:37:21,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 26] total 81 [2023-08-27 09:37:21,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159465413] [2023-08-27 09:37:21,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:37:21,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-08-27 09:37:21,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:21,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-08-27 09:37:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=6334, Unknown=10, NotChecked=0, Total=6806 [2023-08-27 09:37:21,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 09:37:21,943 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) [2023-08-27 09:37:21,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:21,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 09:37:21,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:38:46,733 WARN L234 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 157 DAG size of output: 111 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 09:39:42,302 WARN L234 SmtUtils]: Spent 10.24s 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) Received shutdown request... [2023-08-27 09:42:17,895 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 [2023-08-27 09:42:17,898 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 09:42:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-08-27 09:42:17,900 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err2ASSERT_VIOLATIONASSERT (21 of 22 remaining) [2023-08-27 09:42:17,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 09:42:17,937 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 [2023-08-27 09:42:18,100 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 [2023-08-27 09:42:18,101 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 125 for 305ms.. [2023-08-27 09:42:18,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 22 remaining) [2023-08-27 09:42:18,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 22 remaining) [2023-08-27 09:42:18,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err2ASSERT_VIOLATIONASSERT (18 of 22 remaining) [2023-08-27 09:42:18,103 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-27 09:42:18,103 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-27 09:42:18,103 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-27 09:42:18,103 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-27 09:42:18,103 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-27 09:42:18,103 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-27 09:42:18,103 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-27 09:42:18,103 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-27 09:42:18,103 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err2ASSERT_VIOLATIONASSERT (9 of 22 remaining) [2023-08-27 09:42:18,103 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err2ASSERT_VIOLATIONASSERT (8 of 22 remaining) [2023-08-27 09:42:18,103 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-27 09:42:18,104 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-27 09:42:18,104 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-27 09:42:18,104 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-27 09:42:18,104 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-27 09:42:18,104 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-27 09:42:18,104 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-27 09:42:18,104 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-27 09:42:18,104 INFO L445 BasicCegarLoop]: Path program histogram: [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:42:18,108 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:42:18,108 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:42:18,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:42:18 BasicIcfg [2023-08-27 09:42:18,110 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:42:18,111 INFO L158 Benchmark]: Toolchain (without parser) took 817623.31ms. Allocated memory was 352.3MB in the beginning and 9.3GB in the end (delta: 9.0GB). Free memory was 328.0MB in the beginning and 6.5GB in the end (delta: -6.2GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. [2023-08-27 09:42:18,111 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 352.3MB. Free memory is still 328.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:42:18,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 627.53ms. Allocated memory is still 352.3MB. Free memory was 327.6MB in the beginning and 298.6MB in the end (delta: 28.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-27 09:42:18,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.72ms. Allocated memory is still 352.3MB. Free memory was 298.6MB in the beginning and 295.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 09:42:18,112 INFO L158 Benchmark]: Boogie Preprocessor took 55.20ms. Allocated memory is still 352.3MB. Free memory was 295.7MB in the beginning and 294.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:42:18,112 INFO L158 Benchmark]: RCFGBuilder took 488.42ms. Allocated memory is still 352.3MB. Free memory was 294.0MB in the beginning and 275.8MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 09:42:18,112 INFO L158 Benchmark]: TraceAbstraction took 816350.94ms. Allocated memory was 352.3MB in the beginning and 9.3GB in the end (delta: 9.0GB). Free memory was 329.3MB in the beginning and 6.5GB in the end (delta: -6.2GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. [2023-08-27 09:42:18,113 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 352.3MB. Free memory is still 328.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 627.53ms. Allocated memory is still 352.3MB. Free memory was 327.6MB in the beginning and 298.6MB in the end (delta: 28.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 71.72ms. Allocated memory is still 352.3MB. Free memory was 298.6MB in the beginning and 295.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 55.20ms. Allocated memory is still 352.3MB. Free memory was 295.7MB in the beginning and 294.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 488.42ms. Allocated memory is still 352.3MB. Free memory was 294.0MB in the beginning and 275.8MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 816350.94ms. Allocated memory was 352.3MB in the beginning and 9.3GB in the end (delta: 9.0GB). Free memory was 329.3MB in the beginning and 6.5GB in the end (delta: -6.2GB). Peak memory consumption was 2.8GB. 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: 4.0s, 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 125 for 305ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 125 for 305ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 125 for 305ms.. - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 125 for 305ms.. - TimeoutResultAtElement [Line: 991]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 125 for 305ms.. - TimeoutResultAtElement [Line: 945]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 125 for 305ms.. - TimeoutResultAtElement [Line: 991]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 125 for 305ms.. - TimeoutResultAtElement [Line: 945]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 125 for 305ms.. - TimeoutResultAtElement [Line: 1005]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 125 for 305ms.. - TimeoutResultAtElement [Line: 1005]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 125 for 305ms.. - TimeoutResultAtElement [Line: 949]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 125 for 305ms.. - TimeoutResultAtElement [Line: 949]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 125 for 305ms.. - 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: 816.2s, OverallIterations: 25, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 765.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 244 mSolverCounterUnknown, 18274 SdHoareTripleChecker+Valid, 106.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18274 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 100.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 624 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 1420 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41215 IncrementalHoareTripleChecker+Invalid, 43503 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1420 mSolverCounterUnsat, 4 mSDtfsCounter, 41215 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1885 GetRequests, 620 SyntacticMatches, 24 SemanticMatches, 1240 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 84812 ImplicationChecksByTransitivity, 619.1s 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, 1.1s SatisfiabilityAnalysisTime, 40.7s 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