/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 INSUFFICIENT_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/triangular-longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:57:02,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:57:02,664 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 02:57:02,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:57:02,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:57:02,700 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:57:02,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:57:02,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:57:02,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:57:02,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:57:02,705 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:57:02,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:57:02,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:57:02,706 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:57:02,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:57:02,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:57:02,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:57:02,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:57:02,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:57:02,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:57:02,707 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:57:02,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:57:02,708 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:57:02,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:57:02,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:57:02,708 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:57:02,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:57:02,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:57:02,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:57:02,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:57:02,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:57:02,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:57:02,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:57:02,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:57:02,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:57:02,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:57:02,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:57:02,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:57:02,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:57:02,971 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:57:02,972 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:57:02,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-27 02:57:03,912 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:57:04,065 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:57:04,066 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-27 02:57:04,077 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428e736e1/25175b9987ed4b63a5980e0bdda75034/FLAGa4bdb2d51 [2023-08-27 02:57:04,085 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428e736e1/25175b9987ed4b63a5980e0bdda75034 [2023-08-27 02:57:04,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:57:04,087 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:57:04,088 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:57:04,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:57:04,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:57:04,090 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:57:04" (1/1) ... [2023-08-27 02:57:04,091 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f9eda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04, skipping insertion in model container [2023-08-27 02:57:04,091 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:57:04" (1/1) ... [2023-08-27 02:57:04,121 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:57:04,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:57:04,363 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:57:04,385 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-27 02:57:04,386 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-27 02:57:04,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:57:04,426 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:57:04,427 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:57:04,431 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:57:04,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04 WrapperNode [2023-08-27 02:57:04,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:57:04,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:57:04,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:57:04,433 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:57:04,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04" (1/1) ... [2023-08-27 02:57:04,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04" (1/1) ... [2023-08-27 02:57:04,467 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2023-08-27 02:57:04,467 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:57:04,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:57:04,468 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:57:04,468 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:57:04,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04" (1/1) ... [2023-08-27 02:57:04,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04" (1/1) ... [2023-08-27 02:57:04,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04" (1/1) ... [2023-08-27 02:57:04,484 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04" (1/1) ... [2023-08-27 02:57:04,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04" (1/1) ... [2023-08-27 02:57:04,493 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04" (1/1) ... [2023-08-27 02:57:04,493 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04" (1/1) ... [2023-08-27 02:57:04,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04" (1/1) ... [2023-08-27 02:57:04,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:57:04,496 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:57:04,496 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:57:04,496 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:57:04,497 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04" (1/1) ... [2023-08-27 02:57:04,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:57:04,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:04,523 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 02:57:04,536 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 02:57:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-27 02:57:04,553 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-27 02:57:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-27 02:57:04,554 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-27 02:57:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:57:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 02:57:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:57:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:57:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:57:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:57:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 02:57:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:57:04,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:57:04,556 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 02:57:04,671 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:57:04,674 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:57:04,810 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:57:04,823 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:57:04,823 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 02:57:04,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:57:04 BoogieIcfgContainer [2023-08-27 02:57:04,829 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:57:04,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:57:04,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:57:04,832 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:57:04,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:57:04" (1/3) ... [2023-08-27 02:57:04,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f619f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:57:04, skipping insertion in model container [2023-08-27 02:57:04,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:04" (2/3) ... [2023-08-27 02:57:04,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f619f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:57:04, skipping insertion in model container [2023-08-27 02:57:04,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:57:04" (3/3) ... [2023-08-27 02:57:04,834 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-08-27 02:57:04,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:57:04,847 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 02:57:04,847 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:57:04,900 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 02:57:04,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 84 transitions, 178 flow [2023-08-27 02:57:04,952 INFO L124 PetriNetUnfolderBase]: 6/82 cut-off events. [2023-08-27 02:57:04,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:57:04,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 82 events. 6/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 157 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-27 02:57:04,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 84 transitions, 178 flow [2023-08-27 02:57:04,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 82 transitions, 170 flow [2023-08-27 02:57:04,968 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:57:04,974 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 82 transitions, 170 flow [2023-08-27 02:57:04,975 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 82 transitions, 170 flow [2023-08-27 02:57:04,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 170 flow [2023-08-27 02:57:04,991 INFO L124 PetriNetUnfolderBase]: 6/82 cut-off events. [2023-08-27 02:57:04,991 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:57:04,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 82 events. 6/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-27 02:57:04,993 INFO L119 LiptonReduction]: Number of co-enabled transitions 2304 [2023-08-27 02:57:06,914 INFO L134 LiptonReduction]: Checked pairs total: 2595 [2023-08-27 02:57:06,915 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-27 02:57:06,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:57:06,927 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;@fdf612c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:57:06,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 02:57:06,929 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:57:06,929 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-27 02:57:06,929 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:57:06,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:06,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:57:06,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:06,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash 10934624, now seen corresponding path program 1 times [2023-08-27 02:57:06,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:06,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896349188] [2023-08-27 02:57:06,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:06,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:07,079 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 02:57:07,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:07,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896349188] [2023-08-27 02:57:07,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896349188] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:07,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:07,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:57:07,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170188197] [2023-08-27 02:57:07,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:07,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:57:07,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:07,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:57:07,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:57:07,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 02:57:07,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 02:57:07,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:07,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 02:57:07,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:07,224 INFO L124 PetriNetUnfolderBase]: 415/650 cut-off events. [2023-08-27 02:57:07,224 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 02:57:07,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 650 events. 415/650 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2587 event pairs, 159 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 1306. Up to 351 conditions per place. [2023-08-27 02:57:07,232 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 28 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2023-08-27 02:57:07,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 134 flow [2023-08-27 02:57:07,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-08-27 02:57:07,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2023-08-27 02:57:07,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-08-27 02:57:07,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-08-27 02:57:07,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:07,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-08-27 02:57:07,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 02:57:07,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:07,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:07,256 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 3 states and 249 transitions. [2023-08-27 02:57:07,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 134 flow [2023-08-27 02:57:07,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:57:07,259 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 72 flow [2023-08-27 02:57:07,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-08-27 02:57:07,264 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-08-27 02:57:07,264 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 72 flow [2023-08-27 02:57:07,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 02:57:07,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:07,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:57:07,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:57:07,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:07,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash 10934666, now seen corresponding path program 1 times [2023-08-27 02:57:07,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:07,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878854458] [2023-08-27 02:57:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:07,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:07,369 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 02:57:07,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:07,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878854458] [2023-08-27 02:57:07,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878854458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:07,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:07,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:07,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761446803] [2023-08-27 02:57:07,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:07,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:57:07,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:07,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:57:07,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:57:07,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:07,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 02:57:07,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:07,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:07,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:07,457 INFO L124 PetriNetUnfolderBase]: 601/944 cut-off events. [2023-08-27 02:57:07,458 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-27 02:57:07,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 944 events. 601/944 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4286 event pairs, 309 based on Foata normal form. 0/586 useless extension candidates. Maximal degree in co-relation 2246. Up to 651 conditions per place. [2023-08-27 02:57:07,462 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 37 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-27 02:57:07,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 39 transitions, 206 flow [2023-08-27 02:57:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:07,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-08-27 02:57:07,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4600389863547758 [2023-08-27 02:57:07,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-08-27 02:57:07,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-08-27 02:57:07,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:07,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-08-27 02:57:07,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 02:57:07,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:07,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:07,470 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 72 flow. Second operand 3 states and 236 transitions. [2023-08-27 02:57:07,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 39 transitions, 206 flow [2023-08-27 02:57:07,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 39 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:57:07,474 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 78 flow [2023-08-27 02:57:07,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-08-27 02:57:07,474 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-27 02:57:07,474 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 78 flow [2023-08-27 02:57:07,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 02:57:07,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:07,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:57:07,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:57:07,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:07,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:07,475 INFO L85 PathProgramCache]: Analyzing trace with hash 10934625, now seen corresponding path program 1 times [2023-08-27 02:57:07,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:07,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758023762] [2023-08-27 02:57:07,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:07,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:07,512 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 02:57:07,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:07,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758023762] [2023-08-27 02:57:07,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758023762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:07,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:07,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:57:07,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734100630] [2023-08-27 02:57:07,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:07,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:57:07,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:07,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:57:07,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:57:07,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 02:57:07,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 02:57:07,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:07,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 02:57:07,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:07,583 INFO L124 PetriNetUnfolderBase]: 581/952 cut-off events. [2023-08-27 02:57:07,583 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-08-27 02:57:07,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 952 events. 581/952 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4441 event pairs, 198 based on Foata normal form. 44/566 useless extension candidates. Maximal degree in co-relation 2386. Up to 582 conditions per place. [2023-08-27 02:57:07,587 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 31 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2023-08-27 02:57:07,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 198 flow [2023-08-27 02:57:07,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:07,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-08-27 02:57:07,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47173489278752434 [2023-08-27 02:57:07,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-08-27 02:57:07,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-08-27 02:57:07,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:07,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-08-27 02:57:07,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 02:57:07,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:07,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:07,591 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 78 flow. Second operand 3 states and 242 transitions. [2023-08-27 02:57:07,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 198 flow [2023-08-27 02:57:07,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 37 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:57:07,592 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 114 flow [2023-08-27 02:57:07,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2023-08-27 02:57:07,593 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-27 02:57:07,594 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 114 flow [2023-08-27 02:57:07,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 02:57:07,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:07,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 02:57:07,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:57:07,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:07,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:07,599 INFO L85 PathProgramCache]: Analyzing trace with hash 338975209, now seen corresponding path program 1 times [2023-08-27 02:57:07,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:07,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770490449] [2023-08-27 02:57:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:07,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:07,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:07,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770490449] [2023-08-27 02:57:07,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770490449] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:07,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810975641] [2023-08-27 02:57:07,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:07,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:07,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:07,668 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 02:57:07,671 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 02:57:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:07,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:57:07,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:07,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:57:07,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810975641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:07,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:57:07,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 02:57:07,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812339404] [2023-08-27 02:57:07,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:07,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:07,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:07,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:07,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:57:07,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:07,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 02:57:07,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:07,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:07,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:07,841 INFO L124 PetriNetUnfolderBase]: 505/834 cut-off events. [2023-08-27 02:57:07,841 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2023-08-27 02:57:07,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 834 events. 505/834 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3981 event pairs, 95 based on Foata normal form. 0/520 useless extension candidates. Maximal degree in co-relation 2264. Up to 340 conditions per place. [2023-08-27 02:57:07,844 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-27 02:57:07,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 57 transitions, 353 flow [2023-08-27 02:57:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:57:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:57:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-08-27 02:57:07,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2023-08-27 02:57:07,846 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-08-27 02:57:07,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-08-27 02:57:07,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:07,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-08-27 02:57:07,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 02:57:07,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 02:57:07,848 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 02:57:07,848 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 114 flow. Second operand 4 states and 312 transitions. [2023-08-27 02:57:07,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 57 transitions, 353 flow [2023-08-27 02:57:07,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 57 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:57:07,849 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 110 flow [2023-08-27 02:57:07,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-08-27 02:57:07,850 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-08-27 02:57:07,850 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 110 flow [2023-08-27 02:57:07,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 02:57:07,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:07,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:57:07,857 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 02:57:08,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:08,057 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:08,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:08,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1919052570, now seen corresponding path program 1 times [2023-08-27 02:57:08,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:08,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603288586] [2023-08-27 02:57:08,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:08,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:08,139 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 02:57:08,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:08,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603288586] [2023-08-27 02:57:08,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603288586] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:08,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:08,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:08,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076908396] [2023-08-27 02:57:08,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:08,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:08,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:08,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:08,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:57:08,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:08,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 02:57:08,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:08,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:08,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:08,251 INFO L124 PetriNetUnfolderBase]: 441/738 cut-off events. [2023-08-27 02:57:08,251 INFO L125 PetriNetUnfolderBase]: For 497/497 co-relation queries the response was YES. [2023-08-27 02:57:08,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2092 conditions, 738 events. 441/738 cut-off events. For 497/497 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3325 event pairs, 115 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 2078. Up to 605 conditions per place. [2023-08-27 02:57:08,254 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 34 selfloop transitions, 6 changer transitions 2/42 dead transitions. [2023-08-27 02:57:08,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 264 flow [2023-08-27 02:57:08,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:57:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:57:08,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2023-08-27 02:57:08,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2023-08-27 02:57:08,256 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 294 transitions. [2023-08-27 02:57:08,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 294 transitions. [2023-08-27 02:57:08,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:08,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 294 transitions. [2023-08-27 02:57:08,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 02:57:08,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 02:57:08,258 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 02:57:08,258 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 110 flow. Second operand 4 states and 294 transitions. [2023-08-27 02:57:08,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 264 flow [2023-08-27 02:57:08,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:57:08,259 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 147 flow [2023-08-27 02:57:08,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-08-27 02:57:08,262 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-27 02:57:08,262 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 147 flow [2023-08-27 02:57:08,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 02:57:08,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:08,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:57:08,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 02:57:08,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:08,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:08,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1919051912, now seen corresponding path program 1 times [2023-08-27 02:57:08,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:08,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298397078] [2023-08-27 02:57:08,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:08,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:08,293 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 02:57:08,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:08,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298397078] [2023-08-27 02:57:08,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298397078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:08,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:08,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:57:08,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959416383] [2023-08-27 02:57:08,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:08,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:57:08,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:08,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:57:08,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:57:08,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 02:57:08,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 02:57:08,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:08,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 02:57:08,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:08,362 INFO L124 PetriNetUnfolderBase]: 409/692 cut-off events. [2023-08-27 02:57:08,362 INFO L125 PetriNetUnfolderBase]: For 503/503 co-relation queries the response was YES. [2023-08-27 02:57:08,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2210 conditions, 692 events. 409/692 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3253 event pairs, 121 based on Foata normal form. 0/602 useless extension candidates. Maximal degree in co-relation 2193. Up to 370 conditions per place. [2023-08-27 02:57:08,365 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 47 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-08-27 02:57:08,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 51 transitions, 372 flow [2023-08-27 02:57:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-08-27 02:57:08,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-08-27 02:57:08,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-08-27 02:57:08,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-08-27 02:57:08,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:08,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-08-27 02:57:08,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states 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 02:57:08,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:08,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:08,370 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 147 flow. Second operand 3 states and 243 transitions. [2023-08-27 02:57:08,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 51 transitions, 372 flow [2023-08-27 02:57:08,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 51 transitions, 363 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:57:08,372 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 174 flow [2023-08-27 02:57:08,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-27 02:57:08,374 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-08-27 02:57:08,374 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 174 flow [2023-08-27 02:57:08,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 02:57:08,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:08,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:08,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:57:08,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:08,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash -638931166, now seen corresponding path program 1 times [2023-08-27 02:57:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:08,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325667914] [2023-08-27 02:57:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:08,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:08,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:08,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325667914] [2023-08-27 02:57:08,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325667914] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:08,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264876977] [2023-08-27 02:57:08,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:08,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:08,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:08,418 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 02:57:08,420 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 02:57:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:08,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:57:08,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:08,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:57:08,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264876977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:08,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:57:08,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 02:57:08,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439808963] [2023-08-27 02:57:08,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:08,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:08,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:08,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:08,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:57:08,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:08,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 02:57:08,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:08,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:08,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:08,556 INFO L124 PetriNetUnfolderBase]: 329/564 cut-off events. [2023-08-27 02:57:08,557 INFO L125 PetriNetUnfolderBase]: For 797/797 co-relation queries the response was YES. [2023-08-27 02:57:08,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 564 events. 329/564 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2497 event pairs, 107 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 1899. Up to 330 conditions per place. [2023-08-27 02:57:08,559 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 37 selfloop transitions, 4 changer transitions 1/42 dead transitions. [2023-08-27 02:57:08,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 306 flow [2023-08-27 02:57:08,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:57:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:57:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2023-08-27 02:57:08,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2023-08-27 02:57:08,561 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 303 transitions. [2023-08-27 02:57:08,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 303 transitions. [2023-08-27 02:57:08,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:08,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 303 transitions. [2023-08-27 02:57:08,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 02:57:08,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 02:57:08,563 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 02:57:08,563 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 174 flow. Second operand 4 states and 303 transitions. [2023-08-27 02:57:08,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 306 flow [2023-08-27 02:57:08,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:57:08,565 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 140 flow [2023-08-27 02:57:08,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-08-27 02:57:08,565 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-08-27 02:57:08,566 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 140 flow [2023-08-27 02:57:08,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 02:57:08,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:08,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:08,573 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 02:57:08,770 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 02:57:08,771 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:08,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:08,771 INFO L85 PathProgramCache]: Analyzing trace with hash -638931208, now seen corresponding path program 1 times [2023-08-27 02:57:08,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:08,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740981186] [2023-08-27 02:57:08,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:08,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:57:08,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:08,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740981186] [2023-08-27 02:57:08,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740981186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:08,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:08,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:57:08,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967531999] [2023-08-27 02:57:08,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:08,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:57:08,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:08,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:57:08,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:57:08,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 02:57:08,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 02:57:08,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:08,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 02:57:08,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:08,836 INFO L124 PetriNetUnfolderBase]: 291/512 cut-off events. [2023-08-27 02:57:08,836 INFO L125 PetriNetUnfolderBase]: For 664/664 co-relation queries the response was YES. [2023-08-27 02:57:08,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 512 events. 291/512 cut-off events. For 664/664 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2308 event pairs, 77 based on Foata normal form. 24/536 useless extension candidates. Maximal degree in co-relation 1720. Up to 304 conditions per place. [2023-08-27 02:57:08,839 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 37 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-27 02:57:08,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 303 flow [2023-08-27 02:57:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:08,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:08,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-08-27 02:57:08,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2023-08-27 02:57:08,840 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-08-27 02:57:08,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-08-27 02:57:08,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:08,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-08-27 02:57:08,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 02:57:08,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:08,843 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:08,843 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 140 flow. Second operand 3 states and 240 transitions. [2023-08-27 02:57:08,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 303 flow [2023-08-27 02:57:08,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:57:08,844 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 150 flow [2023-08-27 02:57:08,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2023-08-27 02:57:08,846 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-08-27 02:57:08,846 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 150 flow [2023-08-27 02:57:08,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 02:57:08,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:08,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:08,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 02:57:08,846 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:08,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:08,847 INFO L85 PathProgramCache]: Analyzing trace with hash 928422853, now seen corresponding path program 1 times [2023-08-27 02:57:08,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:08,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479758860] [2023-08-27 02:57:08,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:08,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:08,877 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 02:57:08,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:08,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479758860] [2023-08-27 02:57:08,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479758860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:08,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:08,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267901603] [2023-08-27 02:57:08,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:08,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:08,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:08,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:08,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:57:08,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:08,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 02:57:08,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:08,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:08,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:08,950 INFO L124 PetriNetUnfolderBase]: 359/624 cut-off events. [2023-08-27 02:57:08,950 INFO L125 PetriNetUnfolderBase]: For 999/999 co-relation queries the response was YES. [2023-08-27 02:57:08,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 624 events. 359/624 cut-off events. For 999/999 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 2844 event pairs, 104 based on Foata normal form. 38/662 useless extension candidates. Maximal degree in co-relation 2136. Up to 296 conditions per place. [2023-08-27 02:57:08,952 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 46 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2023-08-27 02:57:08,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 56 transitions, 420 flow [2023-08-27 02:57:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:57:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:57:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2023-08-27 02:57:08,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44678362573099417 [2023-08-27 02:57:08,954 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2023-08-27 02:57:08,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2023-08-27 02:57:08,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:08,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2023-08-27 02:57:08,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 02:57:08,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 02:57:08,956 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 02:57:08,956 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 150 flow. Second operand 5 states and 382 transitions. [2023-08-27 02:57:08,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 56 transitions, 420 flow [2023-08-27 02:57:08,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 56 transitions, 406 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 02:57:08,958 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 254 flow [2023-08-27 02:57:08,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-27 02:57:08,958 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2023-08-27 02:57:08,958 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 254 flow [2023-08-27 02:57:08,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 02:57:08,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:08,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:08,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 02:57:08,959 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:08,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:08,959 INFO L85 PathProgramCache]: Analyzing trace with hash 928422549, now seen corresponding path program 1 times [2023-08-27 02:57:08,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:08,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215517639] [2023-08-27 02:57:08,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:08,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:08,979 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 02:57:08,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:08,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215517639] [2023-08-27 02:57:08,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215517639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:08,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:08,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:08,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261408929] [2023-08-27 02:57:08,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:08,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:08,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:08,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:08,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:57:08,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:08,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 02:57:08,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:08,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:08,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:09,063 INFO L124 PetriNetUnfolderBase]: 431/728 cut-off events. [2023-08-27 02:57:09,064 INFO L125 PetriNetUnfolderBase]: For 1752/1752 co-relation queries the response was YES. [2023-08-27 02:57:09,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2783 conditions, 728 events. 431/728 cut-off events. For 1752/1752 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3262 event pairs, 82 based on Foata normal form. 32/760 useless extension candidates. Maximal degree in co-relation 2758. Up to 386 conditions per place. [2023-08-27 02:57:09,068 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 52 selfloop transitions, 13 changer transitions 0/65 dead transitions. [2023-08-27 02:57:09,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 547 flow [2023-08-27 02:57:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:57:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:57:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2023-08-27 02:57:09,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44912280701754387 [2023-08-27 02:57:09,069 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 384 transitions. [2023-08-27 02:57:09,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 384 transitions. [2023-08-27 02:57:09,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:09,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 384 transitions. [2023-08-27 02:57:09,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 02:57:09,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 02:57:09,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 02:57:09,071 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 254 flow. Second operand 5 states and 384 transitions. [2023-08-27 02:57:09,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 547 flow [2023-08-27 02:57:09,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 547 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 02:57:09,075 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 364 flow [2023-08-27 02:57:09,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=364, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-27 02:57:09,076 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2023-08-27 02:57:09,076 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 364 flow [2023-08-27 02:57:09,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 02:57:09,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:09,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:09,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:57:09,076 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:09,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash 928422548, now seen corresponding path program 1 times [2023-08-27 02:57:09,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:09,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151476256] [2023-08-27 02:57:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:09,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:09,107 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 02:57:09,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:09,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151476256] [2023-08-27 02:57:09,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151476256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:09,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:09,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:09,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119822174] [2023-08-27 02:57:09,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:09,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:09,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:09,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:09,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:57:09,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:09,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 02:57:09,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:09,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:09,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:09,166 INFO L124 PetriNetUnfolderBase]: 288/485 cut-off events. [2023-08-27 02:57:09,166 INFO L125 PetriNetUnfolderBase]: For 2152/2152 co-relation queries the response was YES. [2023-08-27 02:57:09,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1965 conditions, 485 events. 288/485 cut-off events. For 2152/2152 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1858 event pairs, 163 based on Foata normal form. 64/549 useless extension candidates. Maximal degree in co-relation 1934. Up to 485 conditions per place. [2023-08-27 02:57:09,169 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 30 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-08-27 02:57:09,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 31 transitions, 324 flow [2023-08-27 02:57:09,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-08-27 02:57:09,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249512670565302 [2023-08-27 02:57:09,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-08-27 02:57:09,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-08-27 02:57:09,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:09,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-08-27 02:57:09,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 02:57:09,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:09,171 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:09,171 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 364 flow. Second operand 3 states and 218 transitions. [2023-08-27 02:57:09,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 31 transitions, 324 flow [2023-08-27 02:57:09,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 286 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-27 02:57:09,173 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 226 flow [2023-08-27 02:57:09,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-08-27 02:57:09,174 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2023-08-27 02:57:09,174 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 226 flow [2023-08-27 02:57:09,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 02:57:09,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:09,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:09,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 02:57:09,174 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:09,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:09,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1668520394, now seen corresponding path program 1 times [2023-08-27 02:57:09,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:09,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903162001] [2023-08-27 02:57:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:09,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:09,226 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 02:57:09,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:09,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903162001] [2023-08-27 02:57:09,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903162001] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:09,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:09,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:57:09,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609117315] [2023-08-27 02:57:09,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:09,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:57:09,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:09,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:57:09,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:57:09,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:09,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 02:57:09,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:09,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:09,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:09,302 INFO L124 PetriNetUnfolderBase]: 330/563 cut-off events. [2023-08-27 02:57:09,303 INFO L125 PetriNetUnfolderBase]: For 1204/1204 co-relation queries the response was YES. [2023-08-27 02:57:09,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2068 conditions, 563 events. 330/563 cut-off events. For 1204/1204 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2354 event pairs, 90 based on Foata normal form. 12/575 useless extension candidates. Maximal degree in co-relation 2046. Up to 422 conditions per place. [2023-08-27 02:57:09,305 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 47 selfloop transitions, 11 changer transitions 0/58 dead transitions. [2023-08-27 02:57:09,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 474 flow [2023-08-27 02:57:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:57:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:57:09,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 426 transitions. [2023-08-27 02:57:09,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152046783625731 [2023-08-27 02:57:09,306 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 426 transitions. [2023-08-27 02:57:09,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 426 transitions. [2023-08-27 02:57:09,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:09,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 426 transitions. [2023-08-27 02:57:09,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states 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 02:57:09,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states 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 02:57:09,309 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states 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 02:57:09,309 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 226 flow. Second operand 6 states and 426 transitions. [2023-08-27 02:57:09,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 474 flow [2023-08-27 02:57:09,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:57:09,311 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 322 flow [2023-08-27 02:57:09,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=322, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2023-08-27 02:57:09,312 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2023-08-27 02:57:09,312 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 322 flow [2023-08-27 02:57:09,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 02:57:09,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:09,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:09,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 02:57:09,312 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:09,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:09,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1667969834, now seen corresponding path program 2 times [2023-08-27 02:57:09,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:09,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066990219] [2023-08-27 02:57:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:09,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:09,359 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 02:57:09,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:09,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066990219] [2023-08-27 02:57:09,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066990219] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:09,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:09,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:57:09,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272771769] [2023-08-27 02:57:09,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:09,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:57:09,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:09,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:57:09,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:57:09,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:09,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 322 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 02:57:09,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:09,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:09,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:09,447 INFO L124 PetriNetUnfolderBase]: 345/603 cut-off events. [2023-08-27 02:57:09,447 INFO L125 PetriNetUnfolderBase]: For 1952/1952 co-relation queries the response was YES. [2023-08-27 02:57:09,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 603 events. 345/603 cut-off events. For 1952/1952 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2676 event pairs, 89 based on Foata normal form. 20/623 useless extension candidates. Maximal degree in co-relation 2426. Up to 363 conditions per place. [2023-08-27 02:57:09,450 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 47 selfloop transitions, 15 changer transitions 1/63 dead transitions. [2023-08-27 02:57:09,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 596 flow [2023-08-27 02:57:09,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:57:09,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:57:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 358 transitions. [2023-08-27 02:57:09,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41871345029239765 [2023-08-27 02:57:09,451 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 358 transitions. [2023-08-27 02:57:09,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 358 transitions. [2023-08-27 02:57:09,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:09,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 358 transitions. [2023-08-27 02:57:09,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:09,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 02:57:09,453 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 02:57:09,453 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 322 flow. Second operand 5 states and 358 transitions. [2023-08-27 02:57:09,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 596 flow [2023-08-27 02:57:09,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 588 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 02:57:09,457 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 433 flow [2023-08-27 02:57:09,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=433, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2023-08-27 02:57:09,458 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2023-08-27 02:57:09,458 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 433 flow [2023-08-27 02:57:09,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 02:57:09,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:09,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:09,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 02:57:09,458 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:09,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:09,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1283660965, now seen corresponding path program 1 times [2023-08-27 02:57:09,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:09,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572991352] [2023-08-27 02:57:09,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:09,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:09,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572991352] [2023-08-27 02:57:09,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572991352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:09,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:09,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:09,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762840739] [2023-08-27 02:57:09,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:09,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:57:09,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:57:09,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:57:09,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 02:57:09,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 433 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 02:57:09,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:09,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 02:57:09,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:09,536 INFO L124 PetriNetUnfolderBase]: 431/739 cut-off events. [2023-08-27 02:57:09,536 INFO L125 PetriNetUnfolderBase]: For 3433/3433 co-relation queries the response was YES. [2023-08-27 02:57:09,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3356 conditions, 739 events. 431/739 cut-off events. For 3433/3433 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3342 event pairs, 107 based on Foata normal form. 40/779 useless extension candidates. Maximal degree in co-relation 3325. Up to 448 conditions per place. [2023-08-27 02:57:09,539 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 43 selfloop transitions, 19 changer transitions 0/62 dead transitions. [2023-08-27 02:57:09,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 697 flow [2023-08-27 02:57:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-08-27 02:57:09,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2023-08-27 02:57:09,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-08-27 02:57:09,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-08-27 02:57:09,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:09,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-08-27 02:57:09,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 02:57:09,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:09,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:57:09,542 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 433 flow. Second operand 3 states and 237 transitions. [2023-08-27 02:57:09,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 697 flow [2023-08-27 02:57:09,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 670 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-27 02:57:09,548 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 580 flow [2023-08-27 02:57:09,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2023-08-27 02:57:09,548 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2023-08-27 02:57:09,548 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 580 flow [2023-08-27 02:57:09,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 02:57:09,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:09,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:09,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 02:57:09,549 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:09,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:09,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1283660960, now seen corresponding path program 1 times [2023-08-27 02:57:09,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:09,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399225813] [2023-08-27 02:57:09,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:09,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:09,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:09,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399225813] [2023-08-27 02:57:09,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399225813] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:09,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905802058] [2023-08-27 02:57:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:09,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:09,577 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 02:57:09,604 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 02:57:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:09,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:57:09,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:09,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:09,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:09,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905802058] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:09,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:09,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 02:57:09,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177068950] [2023-08-27 02:57:09,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:09,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 02:57:09,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:09,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 02:57:09,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-27 02:57:09,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:09,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 580 flow. Second operand has 8 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 0 states 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 02:57:09,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:09,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:09,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:09,787 INFO L124 PetriNetUnfolderBase]: 485/822 cut-off events. [2023-08-27 02:57:09,788 INFO L125 PetriNetUnfolderBase]: For 4230/4230 co-relation queries the response was YES. [2023-08-27 02:57:09,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3825 conditions, 822 events. 485/822 cut-off events. For 4230/4230 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3507 event pairs, 57 based on Foata normal form. 92/914 useless extension candidates. Maximal degree in co-relation 3792. Up to 279 conditions per place. [2023-08-27 02:57:09,791 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 61 selfloop transitions, 31 changer transitions 1/93 dead transitions. [2023-08-27 02:57:09,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 1035 flow [2023-08-27 02:57:09,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:57:09,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:57:09,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2023-08-27 02:57:09,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.433398310591293 [2023-08-27 02:57:09,793 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2023-08-27 02:57:09,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2023-08-27 02:57:09,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:09,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2023-08-27 02:57:09,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.11111111111111) internal successors, (667), 9 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 02:57:09,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 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 02:57:09,796 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 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 02:57:09,796 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 580 flow. Second operand 9 states and 667 transitions. [2023-08-27 02:57:09,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 1035 flow [2023-08-27 02:57:09,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 977 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-27 02:57:09,803 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 739 flow [2023-08-27 02:57:09,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=739, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2023-08-27 02:57:09,803 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2023-08-27 02:57:09,803 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 739 flow [2023-08-27 02:57:09,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 0 states 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 02:57:09,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:09,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:09,810 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 02:57:10,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:10,008 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:10,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:10,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1157182881, now seen corresponding path program 1 times [2023-08-27 02:57:10,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:10,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121608510] [2023-08-27 02:57:10,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:10,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:10,147 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 02:57:10,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:10,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121608510] [2023-08-27 02:57:10,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121608510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:10,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:10,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:57:10,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758441703] [2023-08-27 02:57:10,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:10,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:57:10,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:10,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:57:10,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:57:10,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:10,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 739 flow. Second operand has 6 states, 6 states have (on average 65.66666666666667) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 02:57:10,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:10,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:10,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:10,275 INFO L124 PetriNetUnfolderBase]: 509/862 cut-off events. [2023-08-27 02:57:10,276 INFO L125 PetriNetUnfolderBase]: For 5158/5158 co-relation queries the response was YES. [2023-08-27 02:57:10,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4435 conditions, 862 events. 509/862 cut-off events. For 5158/5158 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3772 event pairs, 115 based on Foata normal form. 8/870 useless extension candidates. Maximal degree in co-relation 4395. Up to 485 conditions per place. [2023-08-27 02:57:10,283 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 62 selfloop transitions, 36 changer transitions 1/99 dead transitions. [2023-08-27 02:57:10,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 1256 flow [2023-08-27 02:57:10,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:57:10,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:57:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 564 transitions. [2023-08-27 02:57:10,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2023-08-27 02:57:10,285 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 564 transitions. [2023-08-27 02:57:10,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 564 transitions. [2023-08-27 02:57:10,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:10,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 564 transitions. [2023-08-27 02:57:10,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.5) internal successors, (564), 8 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 02:57:10,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states 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 02:57:10,288 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states 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 02:57:10,288 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 739 flow. Second operand 8 states and 564 transitions. [2023-08-27 02:57:10,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 1256 flow [2023-08-27 02:57:10,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 99 transitions, 1220 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-27 02:57:10,298 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 990 flow [2023-08-27 02:57:10,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=990, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2023-08-27 02:57:10,299 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 58 predicate places. [2023-08-27 02:57:10,299 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 990 flow [2023-08-27 02:57:10,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.66666666666667) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 02:57:10,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:10,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:10,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 02:57:10,300 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:10,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1157208921, now seen corresponding path program 2 times [2023-08-27 02:57:10,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:10,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872525669] [2023-08-27 02:57:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:10,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:10,368 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 02:57:10,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:10,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872525669] [2023-08-27 02:57:10,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872525669] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:10,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:10,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:57:10,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086974250] [2023-08-27 02:57:10,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:10,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:57:10,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:10,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:57:10,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:57:10,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:10,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 990 flow. Second operand has 6 states, 6 states have (on average 65.66666666666667) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 02:57:10,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:10,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:10,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:10,508 INFO L124 PetriNetUnfolderBase]: 477/810 cut-off events. [2023-08-27 02:57:10,508 INFO L125 PetriNetUnfolderBase]: For 6562/6562 co-relation queries the response was YES. [2023-08-27 02:57:10,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4605 conditions, 810 events. 477/810 cut-off events. For 6562/6562 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3462 event pairs, 131 based on Foata normal form. 12/822 useless extension candidates. Maximal degree in co-relation 4559. Up to 519 conditions per place. [2023-08-27 02:57:10,512 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 64 selfloop transitions, 27 changer transitions 8/99 dead transitions. [2023-08-27 02:57:10,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 99 transitions, 1395 flow [2023-08-27 02:57:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:57:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:57:10,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 561 transitions. [2023-08-27 02:57:10,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4100877192982456 [2023-08-27 02:57:10,514 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 561 transitions. [2023-08-27 02:57:10,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 561 transitions. [2023-08-27 02:57:10,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:10,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 561 transitions. [2023-08-27 02:57:10,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states 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 02:57:10,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states 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 02:57:10,517 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states 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 02:57:10,517 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 990 flow. Second operand 8 states and 561 transitions. [2023-08-27 02:57:10,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 99 transitions, 1395 flow [2023-08-27 02:57:10,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 99 transitions, 1363 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-27 02:57:10,531 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 1080 flow [2023-08-27 02:57:10,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1080, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2023-08-27 02:57:10,531 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2023-08-27 02:57:10,531 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 1080 flow [2023-08-27 02:57:10,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.66666666666667) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 02:57:10,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:10,532 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:10,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 02:57:10,532 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:10,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:10,532 INFO L85 PathProgramCache]: Analyzing trace with hash -977605308, now seen corresponding path program 3 times [2023-08-27 02:57:10,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:10,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762420946] [2023-08-27 02:57:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:10,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:10,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:10,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762420946] [2023-08-27 02:57:10,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762420946] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:10,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967079888] [2023-08-27 02:57:10,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:57:10,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:10,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:10,617 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 02:57:10,619 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 02:57:10,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 02:57:10,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:10,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 02:57:10,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:10,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:10,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967079888] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:10,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:10,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 02:57:10,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983157516] [2023-08-27 02:57:10,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:10,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 02:57:10,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:10,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 02:57:10,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-27 02:57:10,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:10,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 1080 flow. Second operand has 12 states, 12 states have (on average 65.83333333333333) internal successors, (790), 12 states have internal predecessors, (790), 0 states have call successors, (0), 0 states 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 02:57:10,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:10,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:10,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:11,018 INFO L124 PetriNetUnfolderBase]: 593/1018 cut-off events. [2023-08-27 02:57:11,018 INFO L125 PetriNetUnfolderBase]: For 9917/9917 co-relation queries the response was YES. [2023-08-27 02:57:11,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5917 conditions, 1018 events. 593/1018 cut-off events. For 9917/9917 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4688 event pairs, 142 based on Foata normal form. 48/1066 useless extension candidates. Maximal degree in co-relation 5867. Up to 547 conditions per place. [2023-08-27 02:57:11,023 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 81 selfloop transitions, 50 changer transitions 16/147 dead transitions. [2023-08-27 02:57:11,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 147 transitions, 2071 flow [2023-08-27 02:57:11,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 02:57:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 02:57:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 917 transitions. [2023-08-27 02:57:11,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41250562303193883 [2023-08-27 02:57:11,026 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 917 transitions. [2023-08-27 02:57:11,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 917 transitions. [2023-08-27 02:57:11,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:11,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 917 transitions. [2023-08-27 02:57:11,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.53846153846153) internal successors, (917), 13 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 02:57:11,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 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 02:57:11,030 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 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 02:57:11,030 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 1080 flow. Second operand 13 states and 917 transitions. [2023-08-27 02:57:11,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 147 transitions, 2071 flow [2023-08-27 02:57:11,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 147 transitions, 1980 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-27 02:57:11,045 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 1553 flow [2023-08-27 02:57:11,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1553, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2023-08-27 02:57:11,046 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 79 predicate places. [2023-08-27 02:57:11,046 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 1553 flow [2023-08-27 02:57:11,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 65.83333333333333) internal successors, (790), 12 states have internal predecessors, (790), 0 states have call successors, (0), 0 states 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 02:57:11,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:11,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:11,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 02:57:11,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 02:57:11,251 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:11,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:11,251 INFO L85 PathProgramCache]: Analyzing trace with hash -952580868, now seen corresponding path program 4 times [2023-08-27 02:57:11,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:11,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628642330] [2023-08-27 02:57:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:11,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:11,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:11,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628642330] [2023-08-27 02:57:11,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628642330] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:11,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787762392] [2023-08-27 02:57:11,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 02:57:11,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:11,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:11,336 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 02:57:11,339 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 02:57:11,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 02:57:11,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:11,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 02:57:11,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:11,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:11,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787762392] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:11,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:11,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 02:57:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609124320] [2023-08-27 02:57:11,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:11,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 02:57:11,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:11,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 02:57:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-27 02:57:11,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:11,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 1553 flow. Second operand has 13 states, 13 states have (on average 65.84615384615384) internal successors, (856), 13 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 02:57:11,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:11,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:11,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:11,903 INFO L124 PetriNetUnfolderBase]: 773/1334 cut-off events. [2023-08-27 02:57:11,903 INFO L125 PetriNetUnfolderBase]: For 18605/18605 co-relation queries the response was YES. [2023-08-27 02:57:11,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8326 conditions, 1334 events. 773/1334 cut-off events. For 18605/18605 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6659 event pairs, 146 based on Foata normal form. 62/1396 useless extension candidates. Maximal degree in co-relation 8269. Up to 503 conditions per place. [2023-08-27 02:57:11,911 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 103 selfloop transitions, 84 changer transitions 22/209 dead transitions. [2023-08-27 02:57:11,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 209 transitions, 3214 flow [2023-08-27 02:57:11,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 02:57:11,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 02:57:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1264 transitions. [2023-08-27 02:57:11,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106562703053931 [2023-08-27 02:57:11,914 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1264 transitions. [2023-08-27 02:57:11,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1264 transitions. [2023-08-27 02:57:11,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:11,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1264 transitions. [2023-08-27 02:57:11,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 70.22222222222223) internal successors, (1264), 18 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states 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 02:57:11,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 171.0) internal successors, (3249), 19 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states 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 02:57:11,920 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 171.0) internal successors, (3249), 19 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states 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 02:57:11,920 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 1553 flow. Second operand 18 states and 1264 transitions. [2023-08-27 02:57:11,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 209 transitions, 3214 flow [2023-08-27 02:57:11,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 209 transitions, 3168 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-08-27 02:57:11,951 INFO L231 Difference]: Finished difference. Result has 128 places, 140 transitions, 2484 flow [2023-08-27 02:57:11,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2484, PETRI_PLACES=128, PETRI_TRANSITIONS=140} [2023-08-27 02:57:11,952 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 102 predicate places. [2023-08-27 02:57:11,952 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 140 transitions, 2484 flow [2023-08-27 02:57:11,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 65.84615384615384) internal successors, (856), 13 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 02:57:11,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:11,952 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:11,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:12,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:12,162 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:12,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:12,162 INFO L85 PathProgramCache]: Analyzing trace with hash 820767897, now seen corresponding path program 5 times [2023-08-27 02:57:12,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:12,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630548754] [2023-08-27 02:57:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:12,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:12,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:12,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630548754] [2023-08-27 02:57:12,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630548754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:12,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989826726] [2023-08-27 02:57:12,231 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 02:57:12,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:12,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:12,232 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 02:57:12,234 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 02:57:12,289 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:57:12,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:12,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 02:57:12,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:12,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:12,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989826726] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:12,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:12,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 02:57:12,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056916340] [2023-08-27 02:57:12,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:12,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:57:12,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:12,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:57:12,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:57:12,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:12,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 140 transitions, 2484 flow. Second operand has 14 states, 14 states have (on average 65.71428571428571) internal successors, (920), 14 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 02:57:12,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:12,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:12,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:12,824 INFO L124 PetriNetUnfolderBase]: 1011/1764 cut-off events. [2023-08-27 02:57:12,824 INFO L125 PetriNetUnfolderBase]: For 34360/34360 co-relation queries the response was YES. [2023-08-27 02:57:12,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12357 conditions, 1764 events. 1011/1764 cut-off events. For 34360/34360 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 9573 event pairs, 184 based on Foata normal form. 56/1820 useless extension candidates. Maximal degree in co-relation 12289. Up to 695 conditions per place. [2023-08-27 02:57:12,835 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 122 selfloop transitions, 117 changer transitions 19/258 dead transitions. [2023-08-27 02:57:12,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 258 transitions, 4593 flow [2023-08-27 02:57:12,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 02:57:12,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 02:57:12,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1330 transitions. [2023-08-27 02:57:12,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093567251461988 [2023-08-27 02:57:12,837 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1330 transitions. [2023-08-27 02:57:12,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1330 transitions. [2023-08-27 02:57:12,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:12,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1330 transitions. [2023-08-27 02:57:12,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 70.0) internal successors, (1330), 19 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states 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 02:57:12,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 171.0) internal successors, (3420), 20 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 02:57:12,843 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 171.0) internal successors, (3420), 20 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 02:57:12,843 INFO L175 Difference]: Start difference. First operand has 128 places, 140 transitions, 2484 flow. Second operand 19 states and 1330 transitions. [2023-08-27 02:57:12,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 258 transitions, 4593 flow [2023-08-27 02:57:12,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 258 transitions, 4410 flow, removed 65 selfloop flow, removed 8 redundant places. [2023-08-27 02:57:12,911 INFO L231 Difference]: Finished difference. Result has 149 places, 184 transitions, 3601 flow [2023-08-27 02:57:12,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3601, PETRI_PLACES=149, PETRI_TRANSITIONS=184} [2023-08-27 02:57:12,912 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 123 predicate places. [2023-08-27 02:57:12,912 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 184 transitions, 3601 flow [2023-08-27 02:57:12,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 65.71428571428571) internal successors, (920), 14 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 02:57:12,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:12,912 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:12,919 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 02:57:13,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:13,117 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:13,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:13,117 INFO L85 PathProgramCache]: Analyzing trace with hash -317607516, now seen corresponding path program 2 times [2023-08-27 02:57:13,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:13,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63855212] [2023-08-27 02:57:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:13,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:13,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:13,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63855212] [2023-08-27 02:57:13,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63855212] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:13,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830213472] [2023-08-27 02:57:13,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:57:13,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:13,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:13,174 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 02:57:13,176 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 02:57:13,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:57:13,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:13,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 02:57:13,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:13,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:13,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830213472] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:13,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:13,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 02:57:13,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292161543] [2023-08-27 02:57:13,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:13,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:57:13,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:13,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:57:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:57:13,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:13,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 184 transitions, 3601 flow. Second operand has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 02:57:13,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:13,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:13,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:13,751 INFO L124 PetriNetUnfolderBase]: 1493/2550 cut-off events. [2023-08-27 02:57:13,752 INFO L125 PetriNetUnfolderBase]: For 59410/59410 co-relation queries the response was YES. [2023-08-27 02:57:13,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19144 conditions, 2550 events. 1493/2550 cut-off events. For 59410/59410 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13446 event pairs, 153 based on Foata normal form. 142/2692 useless extension candidates. Maximal degree in co-relation 19069. Up to 999 conditions per place. [2023-08-27 02:57:13,769 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 144 selfloop transitions, 154 changer transitions 8/306 dead transitions. [2023-08-27 02:57:13,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 306 transitions, 6343 flow [2023-08-27 02:57:13,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 02:57:13,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 02:57:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1257 transitions. [2023-08-27 02:57:13,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324045407636739 [2023-08-27 02:57:13,771 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1257 transitions. [2023-08-27 02:57:13,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1257 transitions. [2023-08-27 02:57:13,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:13,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1257 transitions. [2023-08-27 02:57:13,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.94117647058823) internal successors, (1257), 17 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states 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 02:57:13,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 171.0) internal successors, (3078), 18 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 02:57:13,775 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 171.0) internal successors, (3078), 18 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 02:57:13,775 INFO L175 Difference]: Start difference. First operand has 149 places, 184 transitions, 3601 flow. Second operand 17 states and 1257 transitions. [2023-08-27 02:57:13,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 306 transitions, 6343 flow [2023-08-27 02:57:13,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 306 transitions, 6214 flow, removed 40 selfloop flow, removed 6 redundant places. [2023-08-27 02:57:13,887 INFO L231 Difference]: Finished difference. Result has 168 places, 237 transitions, 5213 flow [2023-08-27 02:57:13,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=3494, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5213, PETRI_PLACES=168, PETRI_TRANSITIONS=237} [2023-08-27 02:57:13,887 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 142 predicate places. [2023-08-27 02:57:13,888 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 237 transitions, 5213 flow [2023-08-27 02:57:13,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 02:57:13,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:13,888 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:13,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-27 02:57:14,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:14,090 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:14,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:14,090 INFO L85 PathProgramCache]: Analyzing trace with hash -317608657, now seen corresponding path program 6 times [2023-08-27 02:57:14,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:14,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059012599] [2023-08-27 02:57:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:14,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:14,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:14,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059012599] [2023-08-27 02:57:14,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059012599] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:14,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473560195] [2023-08-27 02:57:14,215 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 02:57:14,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:14,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:14,216 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 02:57:14,243 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 02:57:14,277 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 02:57:14,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:14,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 02:57:14,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:14,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:14,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473560195] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:14,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:14,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 02:57:14,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666682629] [2023-08-27 02:57:14,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:14,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:57:14,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:14,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:57:14,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:57:14,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:14,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 237 transitions, 5213 flow. Second operand has 14 states, 14 states have (on average 65.78571428571429) internal successors, (921), 14 states have internal predecessors, (921), 0 states have call successors, (0), 0 states 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 02:57:14,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:14,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:14,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:14,967 INFO L124 PetriNetUnfolderBase]: 1485/2550 cut-off events. [2023-08-27 02:57:14,968 INFO L125 PetriNetUnfolderBase]: For 63007/63007 co-relation queries the response was YES. [2023-08-27 02:57:14,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19913 conditions, 2550 events. 1485/2550 cut-off events. For 63007/63007 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13557 event pairs, 209 based on Foata normal form. 44/2594 useless extension candidates. Maximal degree in co-relation 19829. Up to 1007 conditions per place. [2023-08-27 02:57:14,985 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 135 selfloop transitions, 163 changer transitions 31/329 dead transitions. [2023-08-27 02:57:14,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 329 transitions, 7003 flow [2023-08-27 02:57:14,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-27 02:57:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-27 02:57:14,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1533 transitions. [2023-08-27 02:57:14,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40749601275917063 [2023-08-27 02:57:14,988 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1533 transitions. [2023-08-27 02:57:14,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1533 transitions. [2023-08-27 02:57:14,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:14,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1533 transitions. [2023-08-27 02:57:14,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 69.68181818181819) internal successors, (1533), 22 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states 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 02:57:14,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 171.0) internal successors, (3933), 23 states have internal predecessors, (3933), 0 states have call successors, (0), 0 states 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 02:57:14,992 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 171.0) internal successors, (3933), 23 states have internal predecessors, (3933), 0 states have call successors, (0), 0 states 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 02:57:14,992 INFO L175 Difference]: Start difference. First operand has 168 places, 237 transitions, 5213 flow. Second operand 22 states and 1533 transitions. [2023-08-27 02:57:14,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 329 transitions, 7003 flow [2023-08-27 02:57:15,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 329 transitions, 6889 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-08-27 02:57:15,141 INFO L231 Difference]: Finished difference. Result has 194 places, 255 transitions, 6081 flow [2023-08-27 02:57:15,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=5103, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6081, PETRI_PLACES=194, PETRI_TRANSITIONS=255} [2023-08-27 02:57:15,141 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 168 predicate places. [2023-08-27 02:57:15,141 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 255 transitions, 6081 flow [2023-08-27 02:57:15,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 65.78571428571429) internal successors, (921), 14 states have internal predecessors, (921), 0 states have call successors, (0), 0 states 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 02:57:15,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:15,142 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:15,149 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 02:57:15,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 02:57:15,346 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:15,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:15,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1112456953, now seen corresponding path program 7 times [2023-08-27 02:57:15,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:15,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36243028] [2023-08-27 02:57:15,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:15,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:15,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36243028] [2023-08-27 02:57:15,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36243028] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814712734] [2023-08-27 02:57:15,455 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 02:57:15,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:15,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:15,456 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 02:57:15,458 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 02:57:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:15,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 02:57:15,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:15,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:15,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814712734] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:15,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:15,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-08-27 02:57:15,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125084676] [2023-08-27 02:57:15,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:15,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 02:57:15,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:15,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 02:57:15,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-08-27 02:57:15,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:15,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 255 transitions, 6081 flow. Second operand has 22 states, 22 states have (on average 65.5) internal successors, (1441), 22 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states 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 02:57:15,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:15,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:15,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:16,646 INFO L124 PetriNetUnfolderBase]: 1757/3054 cut-off events. [2023-08-27 02:57:16,646 INFO L125 PetriNetUnfolderBase]: For 96046/96046 co-relation queries the response was YES. [2023-08-27 02:57:16,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24144 conditions, 3054 events. 1757/3054 cut-off events. For 96046/96046 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16116 event pairs, 162 based on Foata normal form. 112/3166 useless extension candidates. Maximal degree in co-relation 24051. Up to 1239 conditions per place. [2023-08-27 02:57:16,664 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 177 selfloop transitions, 233 changer transitions 60/470 dead transitions. [2023-08-27 02:57:16,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 470 transitions, 10231 flow [2023-08-27 02:57:16,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-27 02:57:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-27 02:57:16,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2581 transitions. [2023-08-27 02:57:16,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4079342500395132 [2023-08-27 02:57:16,668 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2581 transitions. [2023-08-27 02:57:16,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2581 transitions. [2023-08-27 02:57:16,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:16,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2581 transitions. [2023-08-27 02:57:16,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 69.75675675675676) internal successors, (2581), 37 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states 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 02:57:16,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 171.0) internal successors, (6498), 38 states have internal predecessors, (6498), 0 states have call successors, (0), 0 states 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 02:57:16,676 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 171.0) internal successors, (6498), 38 states have internal predecessors, (6498), 0 states have call successors, (0), 0 states 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 02:57:16,676 INFO L175 Difference]: Start difference. First operand has 194 places, 255 transitions, 6081 flow. Second operand 37 states and 2581 transitions. [2023-08-27 02:57:16,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 470 transitions, 10231 flow [2023-08-27 02:57:16,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 470 transitions, 9843 flow, removed 124 selfloop flow, removed 15 redundant places. [2023-08-27 02:57:16,875 INFO L231 Difference]: Finished difference. Result has 232 places, 331 transitions, 8034 flow [2023-08-27 02:57:16,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=5845, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8034, PETRI_PLACES=232, PETRI_TRANSITIONS=331} [2023-08-27 02:57:16,875 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 206 predicate places. [2023-08-27 02:57:16,876 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 331 transitions, 8034 flow [2023-08-27 02:57:16,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 65.5) internal successors, (1441), 22 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states 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 02:57:16,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:16,876 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:16,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:17,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:17,083 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:17,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:17,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1902151844, now seen corresponding path program 2 times [2023-08-27 02:57:17,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:17,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657825230] [2023-08-27 02:57:17,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:17,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:17,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:17,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657825230] [2023-08-27 02:57:17,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657825230] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:17,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448805929] [2023-08-27 02:57:17,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:57:17,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:17,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:17,212 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 02:57:17,226 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 02:57:17,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:57:17,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:17,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 02:57:17,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:17,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:17,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448805929] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:17,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:17,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2023-08-27 02:57:17,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804338770] [2023-08-27 02:57:17,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:17,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 02:57:17,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:17,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 02:57:17,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-08-27 02:57:17,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:17,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 331 transitions, 8034 flow. Second operand has 32 states, 32 states have (on average 68.3125) internal successors, (2186), 32 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states 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 02:57:17,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:17,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:17,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:18,841 INFO L124 PetriNetUnfolderBase]: 2617/4462 cut-off events. [2023-08-27 02:57:18,841 INFO L125 PetriNetUnfolderBase]: For 201867/201867 co-relation queries the response was YES. [2023-08-27 02:57:18,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38140 conditions, 4462 events. 2617/4462 cut-off events. For 201867/201867 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 22501 event pairs, 187 based on Foata normal form. 232/4694 useless extension candidates. Maximal degree in co-relation 38035. Up to 1787 conditions per place. [2023-08-27 02:57:18,878 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 240 selfloop transitions, 297 changer transitions 37/574 dead transitions. [2023-08-27 02:57:18,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 574 transitions, 13946 flow [2023-08-27 02:57:18,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-27 02:57:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-27 02:57:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2872 transitions. [2023-08-27 02:57:18,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4306492727545359 [2023-08-27 02:57:18,881 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2872 transitions. [2023-08-27 02:57:18,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2872 transitions. [2023-08-27 02:57:18,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:18,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2872 transitions. [2023-08-27 02:57:18,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 73.64102564102564) internal successors, (2872), 39 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states 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 02:57:18,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 171.0) internal successors, (6840), 40 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states 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 02:57:18,890 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 171.0) internal successors, (6840), 40 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states 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 02:57:18,891 INFO L175 Difference]: Start difference. First operand has 232 places, 331 transitions, 8034 flow. Second operand 39 states and 2872 transitions. [2023-08-27 02:57:18,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 574 transitions, 13946 flow [2023-08-27 02:57:19,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 574 transitions, 13608 flow, removed 145 selfloop flow, removed 10 redundant places. [2023-08-27 02:57:19,398 INFO L231 Difference]: Finished difference. Result has 283 places, 420 transitions, 11033 flow [2023-08-27 02:57:19,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=7846, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=11033, PETRI_PLACES=283, PETRI_TRANSITIONS=420} [2023-08-27 02:57:19,398 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 257 predicate places. [2023-08-27 02:57:19,398 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 420 transitions, 11033 flow [2023-08-27 02:57:19,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 68.3125) internal successors, (2186), 32 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states 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 02:57:19,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:19,399 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:19,405 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 02:57:19,603 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,SelfDestructingSolverStorable23 [2023-08-27 02:57:19,604 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:19,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2098503709, now seen corresponding path program 8 times [2023-08-27 02:57:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:19,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569744337] [2023-08-27 02:57:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:19,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:19,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:19,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569744337] [2023-08-27 02:57:19,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569744337] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:19,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895709043] [2023-08-27 02:57:19,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:57:19,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:19,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:19,911 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 02:57:19,911 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 02:57:19,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:57:19,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:19,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 02:57:19,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:20,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895709043] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:20,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:20,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-08-27 02:57:20,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253339590] [2023-08-27 02:57:20,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:20,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 02:57:20,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:20,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 02:57:20,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2023-08-27 02:57:20,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:20,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 420 transitions, 11033 flow. Second operand has 34 states, 34 states have (on average 65.32352941176471) internal successors, (2221), 34 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states 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 02:57:20,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:20,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:20,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:22,228 INFO L124 PetriNetUnfolderBase]: 3593/6254 cut-off events. [2023-08-27 02:57:22,228 INFO L125 PetriNetUnfolderBase]: For 255435/255435 co-relation queries the response was YES. [2023-08-27 02:57:22,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54032 conditions, 6254 events. 3593/6254 cut-off events. For 255435/255435 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 35984 event pairs, 758 based on Foata normal form. 48/6302 useless extension candidates. Maximal degree in co-relation 53905. Up to 2603 conditions per place. [2023-08-27 02:57:22,280 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 327 selfloop transitions, 362 changer transitions 70/759 dead transitions. [2023-08-27 02:57:22,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 759 transitions, 19884 flow [2023-08-27 02:57:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-27 02:57:22,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-27 02:57:22,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2705 transitions. [2023-08-27 02:57:22,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40560803718698457 [2023-08-27 02:57:22,283 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2705 transitions. [2023-08-27 02:57:22,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2705 transitions. [2023-08-27 02:57:22,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:22,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2705 transitions. [2023-08-27 02:57:22,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 69.35897435897436) internal successors, (2705), 39 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states 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 02:57:22,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 171.0) internal successors, (6840), 40 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states 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 02:57:22,291 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 171.0) internal successors, (6840), 40 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states 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 02:57:22,291 INFO L175 Difference]: Start difference. First operand has 283 places, 420 transitions, 11033 flow. Second operand 39 states and 2705 transitions. [2023-08-27 02:57:22,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 759 transitions, 19884 flow [2023-08-27 02:57:23,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 759 transitions, 19390 flow, removed 108 selfloop flow, removed 8 redundant places. [2023-08-27 02:57:23,227 INFO L231 Difference]: Finished difference. Result has 322 places, 598 transitions, 16898 flow [2023-08-27 02:57:23,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=10667, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=16898, PETRI_PLACES=322, PETRI_TRANSITIONS=598} [2023-08-27 02:57:23,227 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 296 predicate places. [2023-08-27 02:57:23,227 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 598 transitions, 16898 flow [2023-08-27 02:57:23,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 65.32352941176471) internal successors, (2221), 34 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states 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 02:57:23,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:23,228 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:23,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:23,432 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,SelfDestructingSolverStorable24 [2023-08-27 02:57:23,432 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:23,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:23,433 INFO L85 PathProgramCache]: Analyzing trace with hash -80623615, now seen corresponding path program 9 times [2023-08-27 02:57:23,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:23,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997846526] [2023-08-27 02:57:23,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:23,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:23,652 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:23,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:23,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997846526] [2023-08-27 02:57:23,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997846526] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:23,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445269974] [2023-08-27 02:57:23,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:57:23,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:23,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:23,653 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 02:57:23,655 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 02:57:23,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-27 02:57:23,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:23,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 02:57:23,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:23,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:24,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445269974] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:24,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:24,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-08-27 02:57:24,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362900515] [2023-08-27 02:57:24,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:24,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-27 02:57:24,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-27 02:57:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2023-08-27 02:57:24,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:24,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 598 transitions, 16898 flow. Second operand has 35 states, 35 states have (on average 65.34285714285714) internal successors, (2287), 35 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states 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 02:57:24,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:24,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:24,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:26,819 INFO L124 PetriNetUnfolderBase]: 4513/7930 cut-off events. [2023-08-27 02:57:26,820 INFO L125 PetriNetUnfolderBase]: For 353265/353265 co-relation queries the response was YES. [2023-08-27 02:57:26,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71042 conditions, 7930 events. 4513/7930 cut-off events. For 353265/353265 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 49495 event pairs, 739 based on Foata normal form. 40/7970 useless extension candidates. Maximal degree in co-relation 70905. Up to 3359 conditions per place. [2023-08-27 02:57:26,890 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 311 selfloop transitions, 549 changer transitions 76/936 dead transitions. [2023-08-27 02:57:26,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 936 transitions, 26261 flow [2023-08-27 02:57:26,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-27 02:57:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-27 02:57:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3052 transitions. [2023-08-27 02:57:26,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40563530037214246 [2023-08-27 02:57:26,894 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3052 transitions. [2023-08-27 02:57:26,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3052 transitions. [2023-08-27 02:57:26,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:26,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3052 transitions. [2023-08-27 02:57:26,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 69.36363636363636) internal successors, (3052), 44 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states 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 02:57:26,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 171.0) internal successors, (7695), 45 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states 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 02:57:26,903 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 171.0) internal successors, (7695), 45 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states 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 02:57:26,903 INFO L175 Difference]: Start difference. First operand has 322 places, 598 transitions, 16898 flow. Second operand 44 states and 3052 transitions. [2023-08-27 02:57:26,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 936 transitions, 26261 flow [2023-08-27 02:57:28,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 936 transitions, 26022 flow, removed 10 selfloop flow, removed 17 redundant places. [2023-08-27 02:57:28,268 INFO L231 Difference]: Finished difference. Result has 360 places, 766 transitions, 23472 flow [2023-08-27 02:57:28,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=16661, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=413, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=23472, PETRI_PLACES=360, PETRI_TRANSITIONS=766} [2023-08-27 02:57:28,269 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 334 predicate places. [2023-08-27 02:57:28,269 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 766 transitions, 23472 flow [2023-08-27 02:57:28,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 65.34285714285714) internal successors, (2287), 35 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states 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 02:57:28,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:28,270 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:28,274 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 02:57:28,470 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,SelfDestructingSolverStorable25 [2023-08-27 02:57:28,470 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:28,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:28,471 INFO L85 PathProgramCache]: Analyzing trace with hash 83875667, now seen corresponding path program 10 times [2023-08-27 02:57:28,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:28,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443059899] [2023-08-27 02:57:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:28,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:28,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:28,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443059899] [2023-08-27 02:57:28,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443059899] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:28,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780447461] [2023-08-27 02:57:28,653 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 02:57:28,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:28,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:28,653 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 02:57:28,654 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 02:57:28,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 02:57:28,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:28,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 02:57:28,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:28,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:28,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780447461] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:28,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:28,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-08-27 02:57:28,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936445295] [2023-08-27 02:57:28,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:28,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-27 02:57:28,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:28,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-27 02:57:28,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=995, Unknown=0, NotChecked=0, Total=1190 [2023-08-27 02:57:28,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:28,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 766 transitions, 23472 flow. Second operand has 35 states, 35 states have (on average 65.34285714285714) internal successors, (2287), 35 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states 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 02:57:28,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:28,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:28,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:32,403 INFO L124 PetriNetUnfolderBase]: 4873/8578 cut-off events. [2023-08-27 02:57:32,404 INFO L125 PetriNetUnfolderBase]: For 464810/464810 co-relation queries the response was YES. [2023-08-27 02:57:32,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82099 conditions, 8578 events. 4873/8578 cut-off events. For 464810/464810 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 54462 event pairs, 682 based on Foata normal form. 44/8622 useless extension candidates. Maximal degree in co-relation 81949. Up to 3647 conditions per place. [2023-08-27 02:57:32,491 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 273 selfloop transitions, 649 changer transitions 74/996 dead transitions. [2023-08-27 02:57:32,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 996 transitions, 29967 flow [2023-08-27 02:57:32,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-27 02:57:32,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-27 02:57:32,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3053 transitions. [2023-08-27 02:57:32,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40576820839978733 [2023-08-27 02:57:32,495 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3053 transitions. [2023-08-27 02:57:32,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3053 transitions. [2023-08-27 02:57:32,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:32,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3053 transitions. [2023-08-27 02:57:32,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 69.38636363636364) internal successors, (3053), 44 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states 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 02:57:32,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 171.0) internal successors, (7695), 45 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states 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 02:57:32,570 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 171.0) internal successors, (7695), 45 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states 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 02:57:32,570 INFO L175 Difference]: Start difference. First operand has 360 places, 766 transitions, 23472 flow. Second operand 44 states and 3053 transitions. [2023-08-27 02:57:32,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 996 transitions, 29967 flow [2023-08-27 02:57:34,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 996 transitions, 29488 flow, removed 44 selfloop flow, removed 20 redundant places. [2023-08-27 02:57:34,449 INFO L231 Difference]: Finished difference. Result has 396 places, 838 transitions, 27152 flow [2023-08-27 02:57:34,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=23003, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=580, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=27152, PETRI_PLACES=396, PETRI_TRANSITIONS=838} [2023-08-27 02:57:34,450 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 370 predicate places. [2023-08-27 02:57:34,450 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 838 transitions, 27152 flow [2023-08-27 02:57:34,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 65.34285714285714) internal successors, (2287), 35 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states 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 02:57:34,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:34,451 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:34,457 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 02:57:34,651 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,SelfDestructingSolverStorable26 [2023-08-27 02:57:34,651 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:34,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:34,651 INFO L85 PathProgramCache]: Analyzing trace with hash 794688513, now seen corresponding path program 11 times [2023-08-27 02:57:34,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:34,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51898449] [2023-08-27 02:57:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:34,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:34,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:34,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51898449] [2023-08-27 02:57:34,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51898449] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:34,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003413148] [2023-08-27 02:57:34,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 02:57:34,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:34,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:34,858 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:34,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 02:57:34,933 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-08-27 02:57:34,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:34,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 02:57:34,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:34,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:35,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003413148] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:35,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:35,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2023-08-27 02:57:35,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379343809] [2023-08-27 02:57:35,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:35,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-27 02:57:35,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:35,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-27 02:57:35,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2023-08-27 02:57:35,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:35,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 838 transitions, 27152 flow. Second operand has 38 states, 38 states have (on average 65.28947368421052) internal successors, (2481), 38 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states 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 02:57:35,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:35,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:35,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:38,723 INFO L124 PetriNetUnfolderBase]: 4909/8650 cut-off events. [2023-08-27 02:57:38,723 INFO L125 PetriNetUnfolderBase]: For 515929/515929 co-relation queries the response was YES. [2023-08-27 02:57:38,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87115 conditions, 8650 events. 4909/8650 cut-off events. For 515929/515929 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 54955 event pairs, 595 based on Foata normal form. 28/8678 useless extension candidates. Maximal degree in co-relation 86953. Up to 3683 conditions per place. [2023-08-27 02:57:38,814 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 261 selfloop transitions, 665 changer transitions 71/997 dead transitions. [2023-08-27 02:57:38,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 997 transitions, 31547 flow [2023-08-27 02:57:38,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-27 02:57:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-27 02:57:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2911 transitions. [2023-08-27 02:57:38,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40531885268727375 [2023-08-27 02:57:38,818 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2911 transitions. [2023-08-27 02:57:38,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2911 transitions. [2023-08-27 02:57:38,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:38,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2911 transitions. [2023-08-27 02:57:38,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 69.30952380952381) internal successors, (2911), 42 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states 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 02:57:38,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 171.0) internal successors, (7353), 43 states have internal predecessors, (7353), 0 states have call successors, (0), 0 states 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 02:57:38,826 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 171.0) internal successors, (7353), 43 states have internal predecessors, (7353), 0 states have call successors, (0), 0 states 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 02:57:38,826 INFO L175 Difference]: Start difference. First operand has 396 places, 838 transitions, 27152 flow. Second operand 42 states and 2911 transitions. [2023-08-27 02:57:38,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 997 transitions, 31547 flow [2023-08-27 02:57:41,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 997 transitions, 30600 flow, removed 83 selfloop flow, removed 28 redundant places. [2023-08-27 02:57:41,287 INFO L231 Difference]: Finished difference. Result has 415 places, 855 transitions, 28450 flow [2023-08-27 02:57:41,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=26229, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=649, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=28450, PETRI_PLACES=415, PETRI_TRANSITIONS=855} [2023-08-27 02:57:41,288 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 389 predicate places. [2023-08-27 02:57:41,288 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 855 transitions, 28450 flow [2023-08-27 02:57:41,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 65.28947368421052) internal successors, (2481), 38 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states 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 02:57:41,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:41,289 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:41,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:41,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:41,492 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:41,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:41,492 INFO L85 PathProgramCache]: Analyzing trace with hash 737196107, now seen corresponding path program 12 times [2023-08-27 02:57:41,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:41,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478442511] [2023-08-27 02:57:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:41,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:41,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:41,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478442511] [2023-08-27 02:57:41,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478442511] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:41,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647874429] [2023-08-27 02:57:41,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 02:57:41,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:41,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:41,699 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:41,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 02:57:41,781 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-08-27 02:57:41,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:41,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 02:57:41,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:41,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:42,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647874429] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:42,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:42,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 26 [2023-08-27 02:57:42,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346626196] [2023-08-27 02:57:42,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:42,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 02:57:42,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:42,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 02:57:42,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2023-08-27 02:57:42,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:42,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 855 transitions, 28450 flow. Second operand has 28 states, 28 states have (on average 65.42857142857143) internal successors, (1832), 28 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 02:57:42,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:42,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:42,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:45,758 INFO L124 PetriNetUnfolderBase]: 4933/8722 cut-off events. [2023-08-27 02:57:45,758 INFO L125 PetriNetUnfolderBase]: For 480280/480280 co-relation queries the response was YES. [2023-08-27 02:57:45,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87715 conditions, 8722 events. 4933/8722 cut-off events. For 480280/480280 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 55538 event pairs, 525 based on Foata normal form. 24/8746 useless extension candidates. Maximal degree in co-relation 87551. Up to 3731 conditions per place. [2023-08-27 02:57:45,848 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 330 selfloop transitions, 727 changer transitions 84/1141 dead transitions. [2023-08-27 02:57:45,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 1141 transitions, 36732 flow [2023-08-27 02:57:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-27 02:57:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-27 02:57:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3393 transitions. [2023-08-27 02:57:45,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40494092373791624 [2023-08-27 02:57:45,852 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 3393 transitions. [2023-08-27 02:57:45,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 3393 transitions. [2023-08-27 02:57:45,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:45,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 3393 transitions. [2023-08-27 02:57:45,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 69.24489795918367) internal successors, (3393), 49 states have internal predecessors, (3393), 0 states have call successors, (0), 0 states 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 02:57:45,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 171.0) internal successors, (8550), 50 states have internal predecessors, (8550), 0 states have call successors, (0), 0 states 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 02:57:45,861 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 171.0) internal successors, (8550), 50 states have internal predecessors, (8550), 0 states have call successors, (0), 0 states 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 02:57:45,861 INFO L175 Difference]: Start difference. First operand has 415 places, 855 transitions, 28450 flow. Second operand 49 states and 3393 transitions. [2023-08-27 02:57:45,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 1141 transitions, 36732 flow [2023-08-27 02:57:48,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 1141 transitions, 35587 flow, removed 37 selfloop flow, removed 35 redundant places. [2023-08-27 02:57:48,219 INFO L231 Difference]: Finished difference. Result has 435 places, 923 transitions, 31268 flow [2023-08-27 02:57:48,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=27331, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=668, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=31268, PETRI_PLACES=435, PETRI_TRANSITIONS=923} [2023-08-27 02:57:48,220 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 409 predicate places. [2023-08-27 02:57:48,221 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 923 transitions, 31268 flow [2023-08-27 02:57:48,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.42857142857143) internal successors, (1832), 28 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 02:57:48,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:48,221 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:48,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-27 02:57:48,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 02:57:48,425 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:48,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:48,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1429588969, now seen corresponding path program 13 times [2023-08-27 02:57:48,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:48,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214745547] [2023-08-27 02:57:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:48,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 02:57:48,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 02:57:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 02:57:48,466 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 02:57:48,466 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 02:57:48,466 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (18 of 19 remaining) [2023-08-27 02:57:48,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 19 remaining) [2023-08-27 02:57:48,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 02:57:48,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 02:57:48,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 02:57:48,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 02:57:48,469 INFO L445 BasicCegarLoop]: Path program histogram: [13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:48,472 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:57:48,472 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:57:48,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:57:48 BasicIcfg [2023-08-27 02:57:48,523 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:57:48,523 INFO L158 Benchmark]: Toolchain (without parser) took 44435.68ms. Allocated memory was 400.6MB in the beginning and 4.7GB in the end (delta: 4.3GB). Free memory was 354.6MB in the beginning and 3.1GB in the end (delta: -2.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.0GB. [2023-08-27 02:57:48,523 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 400.6MB. Free memory was 378.5MB in the beginning and 378.5MB in the end (delta: 91.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:57:48,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.82ms. Allocated memory is still 400.6MB. Free memory was 354.6MB in the beginning and 335.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 02:57:48,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.46ms. Allocated memory is still 400.6MB. Free memory was 335.8MB in the beginning and 333.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:57:48,524 INFO L158 Benchmark]: Boogie Preprocessor took 27.73ms. Allocated memory is still 400.6MB. Free memory was 333.7MB in the beginning and 332.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:57:48,524 INFO L158 Benchmark]: RCFGBuilder took 332.79ms. Allocated memory is still 400.6MB. Free memory was 332.6MB in the beginning and 315.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 02:57:48,524 INFO L158 Benchmark]: TraceAbstraction took 43692.58ms. Allocated memory was 400.6MB in the beginning and 4.7GB in the end (delta: 4.3GB). Free memory was 314.8MB in the beginning and 3.1GB in the end (delta: -2.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.0GB. [2023-08-27 02:57:48,529 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 400.6MB. Free memory was 378.5MB in the beginning and 378.5MB in the end (delta: 91.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 343.82ms. Allocated memory is still 400.6MB. Free memory was 354.6MB in the beginning and 335.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.46ms. Allocated memory is still 400.6MB. Free memory was 335.8MB in the beginning and 333.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.73ms. Allocated memory is still 400.6MB. Free memory was 333.7MB in the beginning and 332.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 332.79ms. Allocated memory is still 400.6MB. Free memory was 332.6MB in the beginning and 315.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 43692.58ms. Allocated memory was 400.6MB in the beginning and 4.7GB in the end (delta: 4.3GB). Free memory was 314.8MB in the beginning and 3.1GB in the end (delta: -2.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 83 PlacesBefore, 26 PlacesAfterwards, 82 TransitionsBefore, 22 TransitionsAfterwards, 2304 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 87 TotalNumberOfCompositions, 2595 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2174, independent: 2140, independent conditional: 0, independent unconditional: 2140, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1300, independent: 1287, independent conditional: 0, independent unconditional: 1287, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2174, independent: 853, independent conditional: 0, independent unconditional: 853, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 1300, unknown conditional: 0, unknown unconditional: 1300] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 693]: assertion can be violated assertion can be violated We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) [L693] 0 __assert_fail ("0", "triangular-longer-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 115 locations, 19 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: 43.6s, OverallIterations: 30, TraceHistogramMax: 10, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 32.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5601 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5601 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 460 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4352 IncrementalHoareTripleChecker+Invalid, 4812 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 460 mSolverCounterUnsat, 0 mSDtfsCounter, 4352 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 951 GetRequests, 281 SyntacticMatches, 14 SemanticMatches, 656 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10031 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31268occurred in iteration=29, InterpolantAutomatonStates: 462, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 592 NumberOfCodeBlocks, 592 NumberOfCodeBlocksAsserted, 74 NumberOfCheckSat, 727 ConstructedInterpolants, 0 QuantifiedInterpolants, 2833 SizeOfPredicates, 119 NumberOfNonLiveVariables, 2583 ConjunctsInSsa, 193 ConjunctsInUnsatCore, 57 InterpolantComputations, 16 PerfectInterpolantSequences, 4/990 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 proved your program to be incorrect! [2023-08-27 02:57:48,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...