/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/stack_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:47:18,943 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:47:19,025 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 02:47:19,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:47:19,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:47:19,059 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:47:19,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:47:19,060 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:47:19,061 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:47:19,064 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:47:19,065 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:47:19,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:47:19,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:47:19,066 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:47:19,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:47:19,067 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:47:19,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:47:19,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:47:19,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:47:19,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:47:19,068 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:47:19,068 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:47:19,068 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:47:19,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:47:19,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:47:19,069 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:47:19,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:47:19,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:47:19,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:47:19,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:47:19,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:47:19,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:47:19,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:47:19,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:47:19,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:47:19,072 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:47:19,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:47:19,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:47:19,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:47:19,386 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:47:19,387 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:47:19,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2023-08-27 02:47:20,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:47:20,795 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:47:20,796 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2023-08-27 02:47:20,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb9520f9e/6bb48fbd277c4bdcbfb5ece1938d19d0/FLAG6d7f727ab [2023-08-27 02:47:20,830 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb9520f9e/6bb48fbd277c4bdcbfb5ece1938d19d0 [2023-08-27 02:47:20,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:47:20,837 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:47:20,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:47:20,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:47:20,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:47:20,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:47:20" (1/1) ... [2023-08-27 02:47:20,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f70766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:20, skipping insertion in model container [2023-08-27 02:47:20,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:47:20" (1/1) ... [2023-08-27 02:47:20,897 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:47:21,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:47:21,330 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:47:21,349 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 02:47:21,351 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 02:47:21,358 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-27 02:47:21,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:47:21,421 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:47:21,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:21 WrapperNode [2023-08-27 02:47:21,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:47:21,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:47:21,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:47:21,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:47:21,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:21" (1/1) ... [2023-08-27 02:47:21,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:21" (1/1) ... [2023-08-27 02:47:21,470 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 163 [2023-08-27 02:47:21,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:47:21,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:47:21,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:47:21,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:47:21,482 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:21" (1/1) ... [2023-08-27 02:47:21,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:21" (1/1) ... [2023-08-27 02:47:21,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:21" (1/1) ... [2023-08-27 02:47:21,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:21" (1/1) ... [2023-08-27 02:47:21,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:21" (1/1) ... [2023-08-27 02:47:21,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:21" (1/1) ... [2023-08-27 02:47:21,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:21" (1/1) ... [2023-08-27 02:47:21,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:21" (1/1) ... [2023-08-27 02:47:21,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:47:21,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:47:21,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:47:21,523 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:47:21,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:21" (1/1) ... [2023-08-27 02:47:21,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:47:21,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:47:21,566 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 02:47:21,567 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 02:47:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-27 02:47:21,589 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-27 02:47:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-27 02:47:21,589 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-27 02:47:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:47:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:47:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:47:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:47:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 02:47:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:47:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:47:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:47:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:47:21,592 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 02:47:21,745 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:47:21,747 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:47:21,965 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:47:21,972 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:47:21,972 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 02:47:21,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:47:21 BoogieIcfgContainer [2023-08-27 02:47:21,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:47:21,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:47:21,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:47:21,978 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:47:21,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:47:20" (1/3) ... [2023-08-27 02:47:21,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecc1000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:47:21, skipping insertion in model container [2023-08-27 02:47:21,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:47:21" (2/3) ... [2023-08-27 02:47:21,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecc1000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:47:21, skipping insertion in model container [2023-08-27 02:47:21,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:47:21" (3/3) ... [2023-08-27 02:47:21,981 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2023-08-27 02:47:21,996 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:47:21,996 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-27 02:47:21,996 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:47:22,084 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 02:47:22,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 175 transitions, 366 flow [2023-08-27 02:47:22,180 INFO L124 PetriNetUnfolderBase]: 12/173 cut-off events. [2023-08-27 02:47:22,181 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:47:22,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 173 events. 12/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 472 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2023-08-27 02:47:22,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 175 transitions, 366 flow [2023-08-27 02:47:22,193 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 164 transitions, 337 flow [2023-08-27 02:47:22,197 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:47:22,207 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 164 transitions, 337 flow [2023-08-27 02:47:22,209 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 164 transitions, 337 flow [2023-08-27 02:47:22,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 164 transitions, 337 flow [2023-08-27 02:47:22,268 INFO L124 PetriNetUnfolderBase]: 12/164 cut-off events. [2023-08-27 02:47:22,268 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 02:47:22,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 164 events. 12/164 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 408 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2023-08-27 02:47:22,279 INFO L119 LiptonReduction]: Number of co-enabled transitions 9540 [2023-08-27 02:47:26,254 INFO L134 LiptonReduction]: Checked pairs total: 14007 [2023-08-27 02:47:26,254 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-27 02:47:26,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:47:26,278 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;@5054afb9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:47:26,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-27 02:47:26,284 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:47:26,284 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-27 02:47:26,284 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 02:47:26,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:26,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:47:26,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:26,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:26,292 INFO L85 PathProgramCache]: Analyzing trace with hash -91113708, now seen corresponding path program 1 times [2023-08-27 02:47:26,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:26,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838828068] [2023-08-27 02:47:26,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:26,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:26,549 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 02:47:26,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:26,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838828068] [2023-08-27 02:47:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838828068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:26,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:47:26,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:47:26,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935161071] [2023-08-27 02:47:26,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:26,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:47:26,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:26,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:47:26,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:47:26,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 342 [2023-08-27 02:47:26,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:26,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:26,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 342 [2023-08-27 02:47:26,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:26,800 INFO L124 PetriNetUnfolderBase]: 1254/2057 cut-off events. [2023-08-27 02:47:26,801 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-27 02:47:26,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 2057 events. 1254/2057 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9563 event pairs, 509 based on Foata normal form. 0/1322 useless extension candidates. Maximal degree in co-relation 3888. Up to 1368 conditions per place. [2023-08-27 02:47:26,816 INFO L140 encePairwiseOnDemand]: 335/342 looper letters, 62 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-27 02:47:26,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 277 flow [2023-08-27 02:47:26,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:47:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:47:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-27 02:47:26,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2023-08-27 02:47:26,836 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-27 02:47:26,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-27 02:47:26,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:26,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-27 02:47:26,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:26,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:26,849 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:26,850 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 91 flow. Second operand 3 states and 516 transitions. [2023-08-27 02:47:26,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 277 flow [2023-08-27 02:47:26,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 269 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 02:47:26,856 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 107 flow [2023-08-27 02:47:26,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-27 02:47:26,860 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2023-08-27 02:47:26,861 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 107 flow [2023-08-27 02:47:26,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:26,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:26,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:26,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:47:26,862 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:26,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:26,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1205944391, now seen corresponding path program 1 times [2023-08-27 02:47:26,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:26,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082242537] [2023-08-27 02:47:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:26,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:26,945 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 02:47:26,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:26,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082242537] [2023-08-27 02:47:26,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082242537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:26,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:47:26,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:47:26,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400352774] [2023-08-27 02:47:26,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:26,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:47:26,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:26,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:47:26,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:47:26,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:47:26,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:26,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:26,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:47:26,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:27,285 INFO L124 PetriNetUnfolderBase]: 1725/3028 cut-off events. [2023-08-27 02:47:27,286 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2023-08-27 02:47:27,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6284 conditions, 3028 events. 1725/3028 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16562 event pairs, 868 based on Foata normal form. 0/2262 useless extension candidates. Maximal degree in co-relation 5712. Up to 1760 conditions per place. [2023-08-27 02:47:27,301 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 70 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-27 02:47:27,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 332 flow [2023-08-27 02:47:27,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:47:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:47:27,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-08-27 02:47:27,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272904483430799 [2023-08-27 02:47:27,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-08-27 02:47:27,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-08-27 02:47:27,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:27,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-08-27 02:47:27,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:27,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:27,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:27,311 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 107 flow. Second operand 3 states and 541 transitions. [2023-08-27 02:47:27,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 332 flow [2023-08-27 02:47:27,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:47:27,316 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 120 flow [2023-08-27 02:47:27,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-08-27 02:47:27,317 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-27 02:47:27,317 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 120 flow [2023-08-27 02:47:27,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:27,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:27,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:27,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:47:27,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:27,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:27,323 INFO L85 PathProgramCache]: Analyzing trace with hash -34630795, now seen corresponding path program 1 times [2023-08-27 02:47:27,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:27,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547144682] [2023-08-27 02:47:27,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:27,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:27,452 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 02:47:27,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:27,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547144682] [2023-08-27 02:47:27,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547144682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:27,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:47:27,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:47:27,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282248984] [2023-08-27 02:47:27,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:27,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:47:27,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:27,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:47:27,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:47:27,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:47:27,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:27,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:27,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:47:27,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:27,814 INFO L124 PetriNetUnfolderBase]: 2247/3682 cut-off events. [2023-08-27 02:47:27,815 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2023-08-27 02:47:27,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8469 conditions, 3682 events. 2247/3682 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 21545 event pairs, 979 based on Foata normal form. 0/2720 useless extension candidates. Maximal degree in co-relation 6652. Up to 3011 conditions per place. [2023-08-27 02:47:27,834 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 68 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-27 02:47:27,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 340 flow [2023-08-27 02:47:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:47:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:47:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-27 02:47:27,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243664717348928 [2023-08-27 02:47:27,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-27 02:47:27,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-27 02:47:27,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:27,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-27 02:47:27,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:27,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:27,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:27,842 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 120 flow. Second operand 3 states and 538 transitions. [2023-08-27 02:47:27,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 340 flow [2023-08-27 02:47:27,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:47:27,847 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 134 flow [2023-08-27 02:47:27,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-27 02:47:27,848 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-08-27 02:47:27,848 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 134 flow [2023-08-27 02:47:27,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:27,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:27,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:27,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:47:27,849 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:27,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:27,850 INFO L85 PathProgramCache]: Analyzing trace with hash -34630820, now seen corresponding path program 1 times [2023-08-27 02:47:27,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:27,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861253201] [2023-08-27 02:47:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:27,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:27,929 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 02:47:27,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:27,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861253201] [2023-08-27 02:47:27,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861253201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:27,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:47:27,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:47:27,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879106684] [2023-08-27 02:47:27,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:27,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:47:27,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:27,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:47:27,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:47:27,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:47:27,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:27,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:27,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:47:27,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:28,274 INFO L124 PetriNetUnfolderBase]: 2386/3851 cut-off events. [2023-08-27 02:47:28,274 INFO L125 PetriNetUnfolderBase]: For 589/589 co-relation queries the response was YES. [2023-08-27 02:47:28,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9370 conditions, 3851 events. 2386/3851 cut-off events. For 589/589 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22091 event pairs, 1048 based on Foata normal form. 160/3143 useless extension candidates. Maximal degree in co-relation 8980. Up to 3410 conditions per place. [2023-08-27 02:47:28,296 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 60 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-27 02:47:28,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 338 flow [2023-08-27 02:47:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:47:28,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:47:28,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-27 02:47:28,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2023-08-27 02:47:28,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-27 02:47:28,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-27 02:47:28,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:28,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-27 02:47:28,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:28,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:28,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:28,303 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 134 flow. Second operand 3 states and 531 transitions. [2023-08-27 02:47:28,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 338 flow [2023-08-27 02:47:28,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:47:28,307 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 170 flow [2023-08-27 02:47:28,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2023-08-27 02:47:28,308 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2023-08-27 02:47:28,308 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 170 flow [2023-08-27 02:47:28,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:28,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:28,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:28,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 02:47:28,309 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:28,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:28,310 INFO L85 PathProgramCache]: Analyzing trace with hash 28326508, now seen corresponding path program 1 times [2023-08-27 02:47:28,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:28,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425998336] [2023-08-27 02:47:28,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:28,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:28,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:28,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425998336] [2023-08-27 02:47:28,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425998336] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:47:28,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396939720] [2023-08-27 02:47:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:28,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:47:28,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:47:28,381 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 02:47:28,428 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 02:47:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:28,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:47:28,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:47:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:28,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:47:28,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396939720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:28,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:47:28,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 02:47:28,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118098762] [2023-08-27 02:47:28,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:28,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:47:28,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:28,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:47:28,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:47:28,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:47:28,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:28,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:28,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:47:28,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:28,926 INFO L124 PetriNetUnfolderBase]: 2074/3553 cut-off events. [2023-08-27 02:47:28,927 INFO L125 PetriNetUnfolderBase]: For 1490/1490 co-relation queries the response was YES. [2023-08-27 02:47:28,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9141 conditions, 3553 events. 2074/3553 cut-off events. For 1490/1490 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 19973 event pairs, 75 based on Foata normal form. 0/2887 useless extension candidates. Maximal degree in co-relation 8738. Up to 1861 conditions per place. [2023-08-27 02:47:28,951 INFO L140 encePairwiseOnDemand]: 339/342 looper letters, 100 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-08-27 02:47:28,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 104 transitions, 600 flow [2023-08-27 02:47:28,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:47:28,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:47:28,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 712 transitions. [2023-08-27 02:47:28,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2023-08-27 02:47:28,954 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 712 transitions. [2023-08-27 02:47:28,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 712 transitions. [2023-08-27 02:47:28,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:28,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 712 transitions. [2023-08-27 02:47:28,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:28,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:28,960 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:28,960 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 170 flow. Second operand 4 states and 712 transitions. [2023-08-27 02:47:28,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 104 transitions, 600 flow [2023-08-27 02:47:28,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 104 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:47:28,965 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 164 flow [2023-08-27 02:47:28,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-27 02:47:28,967 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2023-08-27 02:47:28,967 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 164 flow [2023-08-27 02:47:28,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:28,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:28,968 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:28,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 02:47:29,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:47:29,173 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:29,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:29,173 INFO L85 PathProgramCache]: Analyzing trace with hash 28326621, now seen corresponding path program 1 times [2023-08-27 02:47:29,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:29,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463832775] [2023-08-27 02:47:29,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:29,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:47:29,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:29,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463832775] [2023-08-27 02:47:29,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463832775] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:29,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:47:29,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:47:29,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95195397] [2023-08-27 02:47:29,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:29,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:47:29,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:29,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:47:29,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:47:29,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:47:29,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:29,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:29,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:47:29,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:29,482 INFO L124 PetriNetUnfolderBase]: 2000/3401 cut-off events. [2023-08-27 02:47:29,483 INFO L125 PetriNetUnfolderBase]: For 1381/1381 co-relation queries the response was YES. [2023-08-27 02:47:29,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8555 conditions, 3401 events. 2000/3401 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18660 event pairs, 313 based on Foata normal form. 0/2823 useless extension candidates. Maximal degree in co-relation 8170. Up to 2507 conditions per place. [2023-08-27 02:47:29,498 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 63 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-27 02:47:29,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 391 flow [2023-08-27 02:47:29,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:47:29,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:47:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-27 02:47:29,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116959064327485 [2023-08-27 02:47:29,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-27 02:47:29,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-27 02:47:29,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:29,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-27 02:47:29,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:29,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:29,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:29,504 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 164 flow. Second operand 3 states and 525 transitions. [2023-08-27 02:47:29,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 391 flow [2023-08-27 02:47:29,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:47:29,507 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 173 flow [2023-08-27 02:47:29,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-27 02:47:29,508 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2023-08-27 02:47:29,508 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 173 flow [2023-08-27 02:47:29,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:29,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:29,509 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:29,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:47:29,509 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:29,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:29,509 INFO L85 PathProgramCache]: Analyzing trace with hash -893196287, now seen corresponding path program 1 times [2023-08-27 02:47:29,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:29,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567998290] [2023-08-27 02:47:29,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:29,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:29,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:29,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567998290] [2023-08-27 02:47:29,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567998290] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:47:29,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345844581] [2023-08-27 02:47:29,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:29,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:47:29,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:47:29,571 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 02:47:29,627 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 02:47:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:29,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:47:29,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:47:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:29,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:47:29,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:29,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345844581] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:47:29,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:47:29,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-27 02:47:29,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555941506] [2023-08-27 02:47:29,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:47:29,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 02:47:29,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:29,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 02:47:29,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-27 02:47:29,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-27 02:47:29,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 173 flow. Second operand has 10 states, 10 states have (on average 146.4) internal successors, (1464), 10 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:29,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:29,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-27 02:47:29,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:30,615 INFO L124 PetriNetUnfolderBase]: 4546/7433 cut-off events. [2023-08-27 02:47:30,616 INFO L125 PetriNetUnfolderBase]: For 4672/4672 co-relation queries the response was YES. [2023-08-27 02:47:30,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20217 conditions, 7433 events. 4546/7433 cut-off events. For 4672/4672 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 42899 event pairs, 667 based on Foata normal form. 154/6537 useless extension candidates. Maximal degree in co-relation 19594. Up to 2360 conditions per place. [2023-08-27 02:47:30,652 INFO L140 encePairwiseOnDemand]: 330/342 looper letters, 232 selfloop transitions, 40 changer transitions 0/273 dead transitions. [2023-08-27 02:47:30,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 273 transitions, 1577 flow [2023-08-27 02:47:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 02:47:30,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 02:47:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2254 transitions. [2023-08-27 02:47:30,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2023-08-27 02:47:30,658 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2254 transitions. [2023-08-27 02:47:30,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2254 transitions. [2023-08-27 02:47:30,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:30,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2254 transitions. [2023-08-27 02:47:30,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 161.0) internal successors, (2254), 14 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:30,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 342.0) internal successors, (5130), 15 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:30,671 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 342.0) internal successors, (5130), 15 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:30,671 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 173 flow. Second operand 14 states and 2254 transitions. [2023-08-27 02:47:30,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 273 transitions, 1577 flow [2023-08-27 02:47:30,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 273 transitions, 1531 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:47:30,690 INFO L231 Difference]: Finished difference. Result has 71 places, 85 transitions, 496 flow [2023-08-27 02:47:30,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=496, PETRI_PLACES=71, PETRI_TRANSITIONS=85} [2023-08-27 02:47:30,691 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2023-08-27 02:47:30,691 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 85 transitions, 496 flow [2023-08-27 02:47:30,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 146.4) internal successors, (1464), 10 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:30,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:30,692 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:30,698 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 02:47:30,898 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 02:47:30,899 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:30,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:30,899 INFO L85 PathProgramCache]: Analyzing trace with hash 630126791, now seen corresponding path program 1 times [2023-08-27 02:47:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:30,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770282964] [2023-08-27 02:47:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:30,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:30,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:30,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770282964] [2023-08-27 02:47:30,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770282964] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:47:30,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036089862] [2023-08-27 02:47:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:30,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:47:30,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:47:30,990 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 02:47:31,011 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 02:47:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:31,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 02:47:31,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:47:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:31,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:47:31,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036089862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:31,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:47:31,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-27 02:47:31,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902140379] [2023-08-27 02:47:31,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:31,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:47:31,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:47:31,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:47:31,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-27 02:47:31,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 85 transitions, 496 flow. Second operand has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:31,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:31,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-27 02:47:31,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:32,009 INFO L124 PetriNetUnfolderBase]: 5121/8506 cut-off events. [2023-08-27 02:47:32,009 INFO L125 PetriNetUnfolderBase]: For 12491/12491 co-relation queries the response was YES. [2023-08-27 02:47:32,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26672 conditions, 8506 events. 5121/8506 cut-off events. For 12491/12491 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 47604 event pairs, 1166 based on Foata normal form. 598/8220 useless extension candidates. Maximal degree in co-relation 26008. Up to 4022 conditions per place. [2023-08-27 02:47:32,065 INFO L140 encePairwiseOnDemand]: 330/342 looper letters, 152 selfloop transitions, 38 changer transitions 0/191 dead transitions. [2023-08-27 02:47:32,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 191 transitions, 1398 flow [2023-08-27 02:47:32,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:47:32,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:47:32,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1135 transitions. [2023-08-27 02:47:32,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4741019214703425 [2023-08-27 02:47:32,068 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1135 transitions. [2023-08-27 02:47:32,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1135 transitions. [2023-08-27 02:47:32,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:32,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1135 transitions. [2023-08-27 02:47:32,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.14285714285714) internal successors, (1135), 7 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:32,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 342.0) internal successors, (2736), 8 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:32,074 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 342.0) internal successors, (2736), 8 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:32,075 INFO L175 Difference]: Start difference. First operand has 71 places, 85 transitions, 496 flow. Second operand 7 states and 1135 transitions. [2023-08-27 02:47:32,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 191 transitions, 1398 flow [2023-08-27 02:47:32,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 191 transitions, 1380 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 02:47:32,101 INFO L231 Difference]: Finished difference. Result has 79 places, 102 transitions, 825 flow [2023-08-27 02:47:32,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=825, PETRI_PLACES=79, PETRI_TRANSITIONS=102} [2023-08-27 02:47:32,102 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-08-27 02:47:32,102 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 102 transitions, 825 flow [2023-08-27 02:47:32,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:32,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:32,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 02:47:32,110 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 02:47:32,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:47:32,310 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:32,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:32,311 INFO L85 PathProgramCache]: Analyzing trace with hash -38520247, now seen corresponding path program 1 times [2023-08-27 02:47:32,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:32,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184759345] [2023-08-27 02:47:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:32,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:32,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:32,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184759345] [2023-08-27 02:47:32,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184759345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:32,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:47:32,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:47:32,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19634461] [2023-08-27 02:47:32,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:32,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:47:32,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:32,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:47:32,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:47:32,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:47:32,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 102 transitions, 825 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:32,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:32,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:47:32,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:33,004 INFO L124 PetriNetUnfolderBase]: 4552/7689 cut-off events. [2023-08-27 02:47:33,004 INFO L125 PetriNetUnfolderBase]: For 17785/17785 co-relation queries the response was YES. [2023-08-27 02:47:33,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26239 conditions, 7689 events. 4552/7689 cut-off events. For 17785/17785 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 44097 event pairs, 1795 based on Foata normal form. 0/7135 useless extension candidates. Maximal degree in co-relation 25716. Up to 7471 conditions per place. [2023-08-27 02:47:33,053 INFO L140 encePairwiseOnDemand]: 340/342 looper letters, 100 selfloop transitions, 1 changer transitions 0/109 dead transitions. [2023-08-27 02:47:33,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 1054 flow [2023-08-27 02:47:33,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:47:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:47:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-27 02:47:33,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49902534113060426 [2023-08-27 02:47:33,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-27 02:47:33,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-27 02:47:33,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:33,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-27 02:47:33,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:33,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:33,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:33,059 INFO L175 Difference]: Start difference. First operand has 79 places, 102 transitions, 825 flow. Second operand 3 states and 512 transitions. [2023-08-27 02:47:33,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 1054 flow [2023-08-27 02:47:33,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 1038 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 02:47:33,098 INFO L231 Difference]: Finished difference. Result has 78 places, 100 transitions, 799 flow [2023-08-27 02:47:33,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=799, PETRI_PLACES=78, PETRI_TRANSITIONS=100} [2023-08-27 02:47:33,100 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2023-08-27 02:47:33,100 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 100 transitions, 799 flow [2023-08-27 02:47:33,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:33,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:33,101 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 02:47:33,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 02:47:33,101 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:33,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:33,101 INFO L85 PathProgramCache]: Analyzing trace with hash -38520246, now seen corresponding path program 1 times [2023-08-27 02:47:33,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:33,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188853990] [2023-08-27 02:47:33,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:33,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:47:33,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:33,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188853990] [2023-08-27 02:47:33,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188853990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:33,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:47:33,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:47:33,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975639694] [2023-08-27 02:47:33,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:33,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:47:33,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:33,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:47:33,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:47:33,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 342 [2023-08-27 02:47:33,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 100 transitions, 799 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:33,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:33,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 342 [2023-08-27 02:47:33,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:33,669 INFO L124 PetriNetUnfolderBase]: 4112/6983 cut-off events. [2023-08-27 02:47:33,669 INFO L125 PetriNetUnfolderBase]: For 16069/16083 co-relation queries the response was YES. [2023-08-27 02:47:33,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23603 conditions, 6983 events. 4112/6983 cut-off events. For 16069/16083 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 39569 event pairs, 1293 based on Foata normal form. 0/6753 useless extension candidates. Maximal degree in co-relation 17262. Up to 5055 conditions per place. [2023-08-27 02:47:33,708 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 114 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2023-08-27 02:47:33,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 1210 flow [2023-08-27 02:47:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:47:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:47:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2023-08-27 02:47:33,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5097465886939572 [2023-08-27 02:47:33,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2023-08-27 02:47:33,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2023-08-27 02:47:33,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:33,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2023-08-27 02:47:33,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:33,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:33,713 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:33,713 INFO L175 Difference]: Start difference. First operand has 78 places, 100 transitions, 799 flow. Second operand 3 states and 523 transitions. [2023-08-27 02:47:33,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 1210 flow [2023-08-27 02:47:33,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 1201 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 02:47:33,742 INFO L231 Difference]: Finished difference. Result has 79 places, 99 transitions, 801 flow [2023-08-27 02:47:33,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=801, PETRI_PLACES=79, PETRI_TRANSITIONS=99} [2023-08-27 02:47:33,742 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-08-27 02:47:33,743 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 99 transitions, 801 flow [2023-08-27 02:47:33,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:33,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:33,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:33,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:47:33,743 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:33,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:33,744 INFO L85 PathProgramCache]: Analyzing trace with hash -333694767, now seen corresponding path program 1 times [2023-08-27 02:47:33,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:33,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306328333] [2023-08-27 02:47:33,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:33,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:33,804 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 02:47:33,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:33,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306328333] [2023-08-27 02:47:33,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306328333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:33,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:47:33,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:47:33,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199707189] [2023-08-27 02:47:33,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:33,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:47:33,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:33,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:47:33,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:47:33,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 342 [2023-08-27 02:47:33,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 99 transitions, 801 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:33,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:33,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 342 [2023-08-27 02:47:33,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:34,002 INFO L124 PetriNetUnfolderBase]: 1208/2207 cut-off events. [2023-08-27 02:47:34,002 INFO L125 PetriNetUnfolderBase]: For 4162/4162 co-relation queries the response was YES. [2023-08-27 02:47:34,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7595 conditions, 2207 events. 1208/2207 cut-off events. For 4162/4162 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 10648 event pairs, 203 based on Foata normal form. 232/2421 useless extension candidates. Maximal degree in co-relation 7156. Up to 1695 conditions per place. [2023-08-27 02:47:34,010 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 63 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2023-08-27 02:47:34,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 663 flow [2023-08-27 02:47:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:47:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:47:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-27 02:47:34,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48635477582846004 [2023-08-27 02:47:34,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-27 02:47:34,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-27 02:47:34,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:34,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-27 02:47:34,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:34,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:34,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:34,016 INFO L175 Difference]: Start difference. First operand has 79 places, 99 transitions, 801 flow. Second operand 3 states and 499 transitions. [2023-08-27 02:47:34,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 663 flow [2023-08-27 02:47:34,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 609 flow, removed 15 selfloop flow, removed 8 redundant places. [2023-08-27 02:47:34,028 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 436 flow [2023-08-27 02:47:34,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-08-27 02:47:34,028 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2023-08-27 02:47:34,029 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 436 flow [2023-08-27 02:47:34,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:34,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:34,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:34,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 02:47:34,029 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:34,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash -434025252, now seen corresponding path program 1 times [2023-08-27 02:47:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:34,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102046999] [2023-08-27 02:47:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:34,644 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 02:47:34,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:34,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102046999] [2023-08-27 02:47:34,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102046999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:34,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:47:34,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-27 02:47:34,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706066534] [2023-08-27 02:47:34,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:34,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 02:47:34,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:34,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 02:47:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-27 02:47:34,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 342 [2023-08-27 02:47:34,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 436 flow. Second operand has 11 states, 11 states have (on average 128.9090909090909) internal successors, (1418), 11 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:34,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:34,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 342 [2023-08-27 02:47:34,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:35,315 INFO L124 PetriNetUnfolderBase]: 1567/2884 cut-off events. [2023-08-27 02:47:35,315 INFO L125 PetriNetUnfolderBase]: For 3992/3992 co-relation queries the response was YES. [2023-08-27 02:47:35,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9549 conditions, 2884 events. 1567/2884 cut-off events. For 3992/3992 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 14927 event pairs, 476 based on Foata normal form. 12/2890 useless extension candidates. Maximal degree in co-relation 7066. Up to 1840 conditions per place. [2023-08-27 02:47:35,328 INFO L140 encePairwiseOnDemand]: 332/342 looper letters, 130 selfloop transitions, 11 changer transitions 0/146 dead transitions. [2023-08-27 02:47:35,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 146 transitions, 1089 flow [2023-08-27 02:47:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:47:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:47:35,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1249 transitions. [2023-08-27 02:47:35,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40578297595841456 [2023-08-27 02:47:35,332 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1249 transitions. [2023-08-27 02:47:35,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1249 transitions. [2023-08-27 02:47:35,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:35,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1249 transitions. [2023-08-27 02:47:35,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.77777777777777) internal successors, (1249), 9 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:35,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:35,339 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:35,339 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 436 flow. Second operand 9 states and 1249 transitions. [2023-08-27 02:47:35,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 146 transitions, 1089 flow [2023-08-27 02:47:35,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 146 transitions, 1070 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:47:35,347 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 504 flow [2023-08-27 02:47:35,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=504, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-08-27 02:47:35,348 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-08-27 02:47:35,348 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 504 flow [2023-08-27 02:47:35,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.9090909090909) internal successors, (1418), 11 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:35,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:35,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:35,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 02:47:35,349 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:35,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:35,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1363493086, now seen corresponding path program 2 times [2023-08-27 02:47:35,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:35,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717331129] [2023-08-27 02:47:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:35,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:35,822 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 02:47:35,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:35,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717331129] [2023-08-27 02:47:35,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717331129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:35,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:47:35,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-27 02:47:35,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514846570] [2023-08-27 02:47:35,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:35,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 02:47:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 02:47:35,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-27 02:47:35,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 342 [2023-08-27 02:47:35,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 504 flow. Second operand has 11 states, 11 states have (on average 128.9090909090909) internal successors, (1418), 11 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:35,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:35,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 342 [2023-08-27 02:47:35,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:36,584 INFO L124 PetriNetUnfolderBase]: 1850/3399 cut-off events. [2023-08-27 02:47:36,585 INFO L125 PetriNetUnfolderBase]: For 4833/4833 co-relation queries the response was YES. [2023-08-27 02:47:36,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11525 conditions, 3399 events. 1850/3399 cut-off events. For 4833/4833 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 18172 event pairs, 486 based on Foata normal form. 0/3381 useless extension candidates. Maximal degree in co-relation 8991. Up to 1719 conditions per place. [2023-08-27 02:47:36,597 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 128 selfloop transitions, 16 changer transitions 0/149 dead transitions. [2023-08-27 02:47:36,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 149 transitions, 1150 flow [2023-08-27 02:47:36,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:47:36,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:47:36,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1249 transitions. [2023-08-27 02:47:36,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40578297595841456 [2023-08-27 02:47:36,601 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1249 transitions. [2023-08-27 02:47:36,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1249 transitions. [2023-08-27 02:47:36,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:36,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1249 transitions. [2023-08-27 02:47:36,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.77777777777777) internal successors, (1249), 9 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:36,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:36,608 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:36,608 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 504 flow. Second operand 9 states and 1249 transitions. [2023-08-27 02:47:36,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 149 transitions, 1150 flow [2023-08-27 02:47:36,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 149 transitions, 1146 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-27 02:47:36,619 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 596 flow [2023-08-27 02:47:36,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=596, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2023-08-27 02:47:36,620 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2023-08-27 02:47:36,620 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 596 flow [2023-08-27 02:47:36,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.9090909090909) internal successors, (1418), 11 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:36,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:36,621 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:36,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 02:47:36,621 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:36,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:36,622 INFO L85 PathProgramCache]: Analyzing trace with hash 829151540, now seen corresponding path program 1 times [2023-08-27 02:47:36,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:36,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911108439] [2023-08-27 02:47:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:36,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:36,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:36,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911108439] [2023-08-27 02:47:36,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911108439] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:47:36,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294272566] [2023-08-27 02:47:36,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:36,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:47:36,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:47:36,715 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 02:47:36,728 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 02:47:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:36,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 02:47:36,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:47:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:47:36,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:47:36,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294272566] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:36,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:47:36,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-08-27 02:47:36,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394431269] [2023-08-27 02:47:36,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:36,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:47:36,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:36,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:47:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-27 02:47:36,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 342 [2023-08-27 02:47:36,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 596 flow. Second operand has 6 states, 6 states have (on average 140.83333333333334) internal successors, (845), 6 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:36,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:36,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 342 [2023-08-27 02:47:36,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:37,266 INFO L124 PetriNetUnfolderBase]: 1806/3315 cut-off events. [2023-08-27 02:47:37,266 INFO L125 PetriNetUnfolderBase]: For 5564/5564 co-relation queries the response was YES. [2023-08-27 02:47:37,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11649 conditions, 3315 events. 1806/3315 cut-off events. For 5564/5564 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 17114 event pairs, 527 based on Foata normal form. 68/3359 useless extension candidates. Maximal degree in co-relation 9964. Up to 1313 conditions per place. [2023-08-27 02:47:37,277 INFO L140 encePairwiseOnDemand]: 331/342 looper letters, 117 selfloop transitions, 23 changer transitions 0/141 dead transitions. [2023-08-27 02:47:37,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 141 transitions, 1186 flow [2023-08-27 02:47:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:47:37,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:47:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 917 transitions. [2023-08-27 02:47:37,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468810916179337 [2023-08-27 02:47:37,280 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 917 transitions. [2023-08-27 02:47:37,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 917 transitions. [2023-08-27 02:47:37,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:37,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 917 transitions. [2023-08-27 02:47:37,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 152.83333333333334) internal successors, (917), 6 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:37,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 342.0) internal successors, (2394), 7 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:37,292 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 342.0) internal successors, (2394), 7 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:37,292 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 596 flow. Second operand 6 states and 917 transitions. [2023-08-27 02:47:37,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 141 transitions, 1186 flow [2023-08-27 02:47:37,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 141 transitions, 1154 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-08-27 02:47:37,306 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 740 flow [2023-08-27 02:47:37,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=740, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-08-27 02:47:37,307 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2023-08-27 02:47:37,307 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 740 flow [2023-08-27 02:47:37,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.83333333333334) internal successors, (845), 6 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:37,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:37,307 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:37,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 02:47:37,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:47:37,522 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:37,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:37,522 INFO L85 PathProgramCache]: Analyzing trace with hash 87113741, now seen corresponding path program 1 times [2023-08-27 02:47:37,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:37,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648151134] [2023-08-27 02:47:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:37,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:37,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:37,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648151134] [2023-08-27 02:47:37,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648151134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:37,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:47:37,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:47:37,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883338632] [2023-08-27 02:47:37,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:37,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:47:37,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:37,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:47:37,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:47:37,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-27 02:47:37,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 740 flow. Second operand has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:37,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:37,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-27 02:47:37,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:37,986 INFO L124 PetriNetUnfolderBase]: 2145/3906 cut-off events. [2023-08-27 02:47:37,986 INFO L125 PetriNetUnfolderBase]: For 7190/7190 co-relation queries the response was YES. [2023-08-27 02:47:37,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14157 conditions, 3906 events. 2145/3906 cut-off events. For 7190/7190 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 20950 event pairs, 495 based on Foata normal form. 16/3898 useless extension candidates. Maximal degree in co-relation 12374. Up to 1765 conditions per place. [2023-08-27 02:47:38,034 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 114 selfloop transitions, 24 changer transitions 0/139 dead transitions. [2023-08-27 02:47:38,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 139 transitions, 1311 flow [2023-08-27 02:47:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:47:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:47:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 794 transitions. [2023-08-27 02:47:38,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.464327485380117 [2023-08-27 02:47:38,036 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 794 transitions. [2023-08-27 02:47:38,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 794 transitions. [2023-08-27 02:47:38,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:38,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 794 transitions. [2023-08-27 02:47:38,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.8) internal successors, (794), 5 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:38,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:38,040 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:38,040 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 740 flow. Second operand 5 states and 794 transitions. [2023-08-27 02:47:38,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 139 transitions, 1311 flow [2023-08-27 02:47:38,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 139 transitions, 1307 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-27 02:47:38,055 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 944 flow [2023-08-27 02:47:38,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=944, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2023-08-27 02:47:38,056 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2023-08-27 02:47:38,056 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 944 flow [2023-08-27 02:47:38,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:38,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:38,057 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 02:47:38,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 02:47:38,057 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:38,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:38,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2073686424, now seen corresponding path program 1 times [2023-08-27 02:47:38,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:38,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707864535] [2023-08-27 02:47:38,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:38,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:38,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:38,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707864535] [2023-08-27 02:47:38,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707864535] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:47:38,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269809224] [2023-08-27 02:47:38,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:38,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:47:38,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:47:38,173 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 02:47:38,198 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 02:47:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:38,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 02:47:38,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:47:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:38,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:47:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:38,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269809224] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:47:38,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:47:38,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-27 02:47:38,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491668394] [2023-08-27 02:47:38,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:47:38,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 02:47:38,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:38,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 02:47:38,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-27 02:47:38,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-27 02:47:38,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 944 flow. Second operand has 18 states, 18 states have (on average 146.44444444444446) internal successors, (2636), 18 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:38,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:38,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-27 02:47:38,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:39,359 INFO L124 PetriNetUnfolderBase]: 3265/5954 cut-off events. [2023-08-27 02:47:39,359 INFO L125 PetriNetUnfolderBase]: For 18623/18623 co-relation queries the response was YES. [2023-08-27 02:47:39,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22330 conditions, 5954 events. 3265/5954 cut-off events. For 18623/18623 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 31025 event pairs, 745 based on Foata normal form. 208/6144 useless extension candidates. Maximal degree in co-relation 20277. Up to 2051 conditions per place. [2023-08-27 02:47:39,382 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 265 selfloop transitions, 52 changer transitions 3/321 dead transitions. [2023-08-27 02:47:39,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 321 transitions, 2924 flow [2023-08-27 02:47:39,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 02:47:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 02:47:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2683 transitions. [2023-08-27 02:47:39,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46147230822153423 [2023-08-27 02:47:39,388 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2683 transitions. [2023-08-27 02:47:39,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2683 transitions. [2023-08-27 02:47:39,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:39,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2683 transitions. [2023-08-27 02:47:39,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 157.8235294117647) internal successors, (2683), 17 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:39,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 342.0) internal successors, (6156), 18 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:39,402 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 342.0) internal successors, (6156), 18 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:39,402 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 944 flow. Second operand 17 states and 2683 transitions. [2023-08-27 02:47:39,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 321 transitions, 2924 flow [2023-08-27 02:47:39,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 321 transitions, 2903 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 02:47:39,437 INFO L231 Difference]: Finished difference. Result has 122 places, 125 transitions, 1423 flow [2023-08-27 02:47:39,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1423, PETRI_PLACES=122, PETRI_TRANSITIONS=125} [2023-08-27 02:47:39,438 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 79 predicate places. [2023-08-27 02:47:39,438 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 125 transitions, 1423 flow [2023-08-27 02:47:39,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 146.44444444444446) internal successors, (2636), 18 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:39,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:39,439 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:39,447 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 02:47:39,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 02:47:39,644 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:39,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:39,645 INFO L85 PathProgramCache]: Analyzing trace with hash -928121280, now seen corresponding path program 3 times [2023-08-27 02:47:39,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:39,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834984597] [2023-08-27 02:47:39,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:39,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:41,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:41,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:41,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834984597] [2023-08-27 02:47:41,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834984597] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:47:41,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825566635] [2023-08-27 02:47:41,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:47:41,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:47:41,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:47:41,100 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 02:47:41,125 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 02:47:41,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-27 02:47:41,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:47:41,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-27 02:47:41,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:47:41,426 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 02:47:41,785 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2023-08-27 02:47:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:47:41,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:47:41,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825566635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:47:41,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:47:41,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 32 [2023-08-27 02:47:41,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257634499] [2023-08-27 02:47:41,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:47:41,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 02:47:41,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:41,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 02:47:41,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1007, Unknown=0, NotChecked=0, Total=1122 [2023-08-27 02:47:41,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 342 [2023-08-27 02:47:41,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 125 transitions, 1423 flow. Second operand has 15 states, 15 states have (on average 104.86666666666666) internal successors, (1573), 15 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:41,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:41,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 342 [2023-08-27 02:47:41,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:44,469 INFO L124 PetriNetUnfolderBase]: 4383/8031 cut-off events. [2023-08-27 02:47:44,469 INFO L125 PetriNetUnfolderBase]: For 24772/24772 co-relation queries the response was YES. [2023-08-27 02:47:44,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31656 conditions, 8031 events. 4383/8031 cut-off events. For 24772/24772 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 46102 event pairs, 893 based on Foata normal form. 0/8019 useless extension candidates. Maximal degree in co-relation 31420. Up to 2212 conditions per place. [2023-08-27 02:47:44,512 INFO L140 encePairwiseOnDemand]: 321/342 looper letters, 193 selfloop transitions, 151 changer transitions 0/345 dead transitions. [2023-08-27 02:47:44,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 345 transitions, 3738 flow [2023-08-27 02:47:44,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-27 02:47:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-27 02:47:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2959 transitions. [2023-08-27 02:47:44,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32044617717132334 [2023-08-27 02:47:44,517 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2959 transitions. [2023-08-27 02:47:44,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2959 transitions. [2023-08-27 02:47:44,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:44,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2959 transitions. [2023-08-27 02:47:44,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 109.5925925925926) internal successors, (2959), 27 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:44,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 342.0) internal successors, (9576), 28 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:44,532 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 342.0) internal successors, (9576), 28 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:44,532 INFO L175 Difference]: Start difference. First operand has 122 places, 125 transitions, 1423 flow. Second operand 27 states and 2959 transitions. [2023-08-27 02:47:44,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 345 transitions, 3738 flow [2023-08-27 02:47:44,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 345 transitions, 3509 flow, removed 77 selfloop flow, removed 7 redundant places. [2023-08-27 02:47:44,606 INFO L231 Difference]: Finished difference. Result has 147 places, 219 transitions, 2660 flow [2023-08-27 02:47:44,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2660, PETRI_PLACES=147, PETRI_TRANSITIONS=219} [2023-08-27 02:47:44,607 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 104 predicate places. [2023-08-27 02:47:44,607 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 219 transitions, 2660 flow [2023-08-27 02:47:44,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.86666666666666) internal successors, (1573), 15 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:44,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:44,608 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:44,620 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 02:47:44,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 02:47:44,813 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:44,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:44,814 INFO L85 PathProgramCache]: Analyzing trace with hash -363086378, now seen corresponding path program 4 times [2023-08-27 02:47:44,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:44,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487462905] [2023-08-27 02:47:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:44,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:47:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:45,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:47:45,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487462905] [2023-08-27 02:47:45,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487462905] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:47:45,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454428011] [2023-08-27 02:47:45,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 02:47:45,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:47:45,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:47:45,748 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 02:47:45,750 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 02:47:45,873 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 02:47:45,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:47:45,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-27 02:47:45,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:47:45,902 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-27 02:47:45,902 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 02:47:46,260 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:47:46,305 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-27 02:47:46,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-08-27 02:47:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:47:46,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:47:47,152 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:47:47,153 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 02:47:47,162 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:47:47,162 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-08-27 02:47:47,167 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-08-27 02:47:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:47:47,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454428011] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:47:47,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:47:47,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 14] total 46 [2023-08-27 02:47:47,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149731899] [2023-08-27 02:47:47,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:47:47,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-27 02:47:47,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:47:47,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-27 02:47:47,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2093, Unknown=11, NotChecked=0, Total=2256 [2023-08-27 02:47:47,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 02:47:47,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 219 transitions, 2660 flow. Second operand has 48 states, 48 states have (on average 100.75) internal successors, (4836), 48 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:47,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:47:47,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 02:47:47,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:47:59,154 INFO L124 PetriNetUnfolderBase]: 6616/12011 cut-off events. [2023-08-27 02:47:59,154 INFO L125 PetriNetUnfolderBase]: For 45875/45875 co-relation queries the response was YES. [2023-08-27 02:47:59,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51691 conditions, 12011 events. 6616/12011 cut-off events. For 45875/45875 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 72244 event pairs, 716 based on Foata normal form. 82/12087 useless extension candidates. Maximal degree in co-relation 40802. Up to 2187 conditions per place. [2023-08-27 02:47:59,367 INFO L140 encePairwiseOnDemand]: 318/342 looper letters, 456 selfloop transitions, 340 changer transitions 12/809 dead transitions. [2023-08-27 02:47:59,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 809 transitions, 8354 flow [2023-08-27 02:47:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-08-27 02:47:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2023-08-27 02:47:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 8232 transitions. [2023-08-27 02:47:59,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30859199280251914 [2023-08-27 02:47:59,378 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 8232 transitions. [2023-08-27 02:47:59,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 8232 transitions. [2023-08-27 02:47:59,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:47:59,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 8232 transitions. [2023-08-27 02:47:59,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 105.53846153846153) internal successors, (8232), 78 states have internal predecessors, (8232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:59,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 342.0) internal successors, (27018), 79 states have internal predecessors, (27018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:59,432 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 342.0) internal successors, (27018), 79 states have internal predecessors, (27018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:59,432 INFO L175 Difference]: Start difference. First operand has 147 places, 219 transitions, 2660 flow. Second operand 78 states and 8232 transitions. [2023-08-27 02:47:59,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 809 transitions, 8354 flow [2023-08-27 02:47:59,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 809 transitions, 8139 flow, removed 58 selfloop flow, removed 5 redundant places. [2023-08-27 02:47:59,607 INFO L231 Difference]: Finished difference. Result has 230 places, 400 transitions, 5445 flow [2023-08-27 02:47:59,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=5445, PETRI_PLACES=230, PETRI_TRANSITIONS=400} [2023-08-27 02:47:59,608 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2023-08-27 02:47:59,608 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 400 transitions, 5445 flow [2023-08-27 02:47:59,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 100.75) internal successors, (4836), 48 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:47:59,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:47:59,609 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:47:59,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 02:47:59,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:47:59,810 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:47:59,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:47:59,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1385984681, now seen corresponding path program 2 times [2023-08-27 02:47:59,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:47:59,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726999924] [2023-08-27 02:47:59,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:47:59,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:47:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:48:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:48:00,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:48:00,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726999924] [2023-08-27 02:48:00,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726999924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:48:00,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:48:00,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 02:48:00,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848239456] [2023-08-27 02:48:00,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:48:00,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:48:00,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:48:00,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:48:00,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:48:00,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 342 [2023-08-27 02:48:00,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 400 transitions, 5445 flow. Second operand has 7 states, 7 states have (on average 136.71428571428572) internal successors, (957), 7 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:48:00,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:48:00,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 342 [2023-08-27 02:48:00,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:48:01,636 INFO L124 PetriNetUnfolderBase]: 5660/10397 cut-off events. [2023-08-27 02:48:01,636 INFO L125 PetriNetUnfolderBase]: For 41079/41079 co-relation queries the response was YES. [2023-08-27 02:48:01,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48117 conditions, 10397 events. 5660/10397 cut-off events. For 41079/41079 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 63317 event pairs, 1410 based on Foata normal form. 128/10525 useless extension candidates. Maximal degree in co-relation 45423. Up to 6468 conditions per place. [2023-08-27 02:48:01,702 INFO L140 encePairwiseOnDemand]: 329/342 looper letters, 213 selfloop transitions, 187 changer transitions 0/401 dead transitions. [2023-08-27 02:48:01,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 401 transitions, 5775 flow [2023-08-27 02:48:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:48:01,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:48:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1130 transitions. [2023-08-27 02:48:01,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130116959064328 [2023-08-27 02:48:01,703 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1130 transitions. [2023-08-27 02:48:01,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1130 transitions. [2023-08-27 02:48:01,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:48:01,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1130 transitions. [2023-08-27 02:48:01,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.25) internal successors, (1130), 8 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:48:01,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 342.0) internal successors, (3078), 9 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:48:01,707 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 342.0) internal successors, (3078), 9 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:48:01,707 INFO L175 Difference]: Start difference. First operand has 230 places, 400 transitions, 5445 flow. Second operand 8 states and 1130 transitions. [2023-08-27 02:48:01,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 401 transitions, 5775 flow [2023-08-27 02:48:01,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 401 transitions, 5093 flow, removed 297 selfloop flow, removed 11 redundant places. [2023-08-27 02:48:01,958 INFO L231 Difference]: Finished difference. Result has 226 places, 353 transitions, 4551 flow [2023-08-27 02:48:01,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=4045, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4551, PETRI_PLACES=226, PETRI_TRANSITIONS=353} [2023-08-27 02:48:01,958 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 183 predicate places. [2023-08-27 02:48:01,958 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 353 transitions, 4551 flow [2023-08-27 02:48:01,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.71428571428572) internal successors, (957), 7 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:48:01,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:48:01,959 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:48:01,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 02:48:01,959 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:48:01,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:48:01,959 INFO L85 PathProgramCache]: Analyzing trace with hash 118586386, now seen corresponding path program 1 times [2023-08-27 02:48:01,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:48:01,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578240717] [2023-08-27 02:48:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:48:01,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:48:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:48:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:48:03,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:48:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578240717] [2023-08-27 02:48:03,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578240717] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:48:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863592045] [2023-08-27 02:48:03,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:48:03,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:48:03,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:48:03,688 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 02:48:03,691 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 02:48:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:48:03,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 71 conjunts are in the unsatisfiable core [2023-08-27 02:48:03,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:48:04,123 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 02:48:04,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:48:04,408 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2023-08-27 02:48:04,812 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2023-08-27 02:48:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:48:04,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:48:06,388 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 02:48:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:48:06,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863592045] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:48:06,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:48:06,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2023-08-27 02:48:06,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131233903] [2023-08-27 02:48:06,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:48:06,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-27 02:48:06,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:48:06,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-27 02:48:06,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=3036, Unknown=0, NotChecked=0, Total=3306 [2023-08-27 02:48:06,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 02:48:06,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 353 transitions, 4551 flow. Second operand has 58 states, 58 states have (on average 100.91379310344827) internal successors, (5853), 58 states have internal predecessors, (5853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:48:06,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:48:06,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 02:48:06,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:48:35,868 INFO L124 PetriNetUnfolderBase]: 10144/18579 cut-off events. [2023-08-27 02:48:35,869 INFO L125 PetriNetUnfolderBase]: For 57733/57733 co-relation queries the response was YES. [2023-08-27 02:48:35,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84191 conditions, 18579 events. 10144/18579 cut-off events. For 57733/57733 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 127940 event pairs, 1405 based on Foata normal form. 12/18591 useless extension candidates. Maximal degree in co-relation 77747. Up to 3335 conditions per place. [2023-08-27 02:48:36,044 INFO L140 encePairwiseOnDemand]: 322/342 looper letters, 615 selfloop transitions, 534 changer transitions 15/1165 dead transitions. [2023-08-27 02:48:36,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 1165 transitions, 13241 flow [2023-08-27 02:48:36,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-08-27 02:48:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2023-08-27 02:48:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 10559 transitions. [2023-08-27 02:48:36,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30874269005847954 [2023-08-27 02:48:36,057 INFO L72 ComplementDD]: Start complementDD. Operand 100 states and 10559 transitions. [2023-08-27 02:48:36,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 100 states and 10559 transitions. [2023-08-27 02:48:36,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:48:36,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 100 states and 10559 transitions. [2023-08-27 02:48:36,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 101 states, 100 states have (on average 105.59) internal successors, (10559), 100 states have internal predecessors, (10559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:48:36,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 101 states, 101 states have (on average 342.0) internal successors, (34542), 101 states have internal predecessors, (34542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:48:36,098 INFO L81 ComplementDD]: Finished complementDD. Result has 101 states, 101 states have (on average 342.0) internal successors, (34542), 101 states have internal predecessors, (34542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:48:36,098 INFO L175 Difference]: Start difference. First operand has 226 places, 353 transitions, 4551 flow. Second operand 100 states and 10559 transitions. [2023-08-27 02:48:36,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 1165 transitions, 13241 flow [2023-08-27 02:48:36,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 1165 transitions, 12850 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-27 02:48:36,357 INFO L231 Difference]: Finished difference. Result has 333 places, 639 transitions, 9345 flow [2023-08-27 02:48:36,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=9345, PETRI_PLACES=333, PETRI_TRANSITIONS=639} [2023-08-27 02:48:36,357 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 290 predicate places. [2023-08-27 02:48:36,357 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 639 transitions, 9345 flow [2023-08-27 02:48:36,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 100.91379310344827) internal successors, (5853), 58 states have internal predecessors, (5853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:48:36,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:48:36,358 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:48:36,365 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 02:48:36,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:48:36,564 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:48:36,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:48:36,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1244370296, now seen corresponding path program 2 times [2023-08-27 02:48:36,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:48:36,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76146788] [2023-08-27 02:48:36,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:48:36,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:48:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:48:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:48:37,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:48:37,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76146788] [2023-08-27 02:48:37,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76146788] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:48:37,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672021828] [2023-08-27 02:48:37,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:48:37,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:48:37,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:48:37,997 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 02:48:38,028 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 02:48:38,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:48:38,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:48:38,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 88 conjunts are in the unsatisfiable core [2023-08-27 02:48:38,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:48:38,197 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:48:38,197 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-08-27 02:48:38,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:48:38,447 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-27 02:48:38,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:48:38,707 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-08-27 02:48:39,145 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-08-27 02:48:39,207 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:48:39,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:48:40,000 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_766 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_766) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2023-08-27 02:48:40,010 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:48:40,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 02:48:40,017 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:48:40,017 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-08-27 02:48:40,020 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-08-27 02:48:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:48:40,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672021828] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:48:40,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:48:40,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 20] total 62 [2023-08-27 02:48:40,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412490362] [2023-08-27 02:48:40,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:48:40,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-08-27 02:48:40,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:48:40,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-08-27 02:48:40,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3672, Unknown=1, NotChecked=122, Total=4032 [2023-08-27 02:48:40,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 02:48:40,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 639 transitions, 9345 flow. Second operand has 64 states, 64 states have (on average 100.734375) internal successors, (6447), 64 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:48:40,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:48:40,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 02:48:40,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:49:02,965 INFO L124 PetriNetUnfolderBase]: 13488/24791 cut-off events. [2023-08-27 02:49:02,966 INFO L125 PetriNetUnfolderBase]: For 100792/100792 co-relation queries the response was YES. [2023-08-27 02:49:03,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120518 conditions, 24791 events. 13488/24791 cut-off events. For 100792/100792 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 179688 event pairs, 1180 based on Foata normal form. 206/24997 useless extension candidates. Maximal degree in co-relation 120211. Up to 4722 conditions per place. [2023-08-27 02:49:03,134 INFO L140 encePairwiseOnDemand]: 321/342 looper letters, 447 selfloop transitions, 955 changer transitions 77/1480 dead transitions. [2023-08-27 02:49:03,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 1480 transitions, 20301 flow [2023-08-27 02:49:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-08-27 02:49:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2023-08-27 02:49:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 12537 transitions. [2023-08-27 02:49:03,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30548245614035086 [2023-08-27 02:49:03,150 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 12537 transitions. [2023-08-27 02:49:03,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 12537 transitions. [2023-08-27 02:49:03,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:49:03,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 12537 transitions. [2023-08-27 02:49:03,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 104.475) internal successors, (12537), 120 states have internal predecessors, (12537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:03,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 342.0) internal successors, (41382), 121 states have internal predecessors, (41382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:03,199 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 342.0) internal successors, (41382), 121 states have internal predecessors, (41382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:03,200 INFO L175 Difference]: Start difference. First operand has 333 places, 639 transitions, 9345 flow. Second operand 120 states and 12537 transitions. [2023-08-27 02:49:03,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 1480 transitions, 20301 flow [2023-08-27 02:49:03,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1480 transitions, 19799 flow, removed 122 selfloop flow, removed 14 redundant places. [2023-08-27 02:49:03,739 INFO L231 Difference]: Finished difference. Result has 447 places, 1011 transitions, 16954 flow [2023-08-27 02:49:03,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=8830, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=120, PETRI_FLOW=16954, PETRI_PLACES=447, PETRI_TRANSITIONS=1011} [2023-08-27 02:49:03,739 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 404 predicate places. [2023-08-27 02:49:03,739 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 1011 transitions, 16954 flow [2023-08-27 02:49:03,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 100.734375) internal successors, (6447), 64 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:03,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:49:03,740 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:49:03,745 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 02:49:03,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:49:03,941 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:49:03,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:49:03,942 INFO L85 PathProgramCache]: Analyzing trace with hash -358638984, now seen corresponding path program 2 times [2023-08-27 02:49:03,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:49:03,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521891043] [2023-08-27 02:49:03,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:49:03,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:49:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:49:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:49:04,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:49:04,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521891043] [2023-08-27 02:49:04,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521891043] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:49:04,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351924438] [2023-08-27 02:49:04,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:49:04,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:49:04,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:49:04,105 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 02:49:04,109 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 02:49:04,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:49:04,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:49:04,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 02:49:04,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:49:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:49:04,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:49:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:49:04,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351924438] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:49:04,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:49:04,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-27 02:49:04,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583958185] [2023-08-27 02:49:04,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:49:04,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 02:49:04,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:49:04,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 02:49:04,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-08-27 02:49:04,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 342 [2023-08-27 02:49:04,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1011 transitions, 16954 flow. Second operand has 20 states, 20 states have (on average 141.25) internal successors, (2825), 20 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:04,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:49:04,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 342 [2023-08-27 02:49:04,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:49:11,491 INFO L124 PetriNetUnfolderBase]: 14085/26174 cut-off events. [2023-08-27 02:49:11,492 INFO L125 PetriNetUnfolderBase]: For 124088/124088 co-relation queries the response was YES. [2023-08-27 02:49:11,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132292 conditions, 26174 events. 14085/26174 cut-off events. For 124088/124088 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 192889 event pairs, 3290 based on Foata normal form. 616/26790 useless extension candidates. Maximal degree in co-relation 126062. Up to 5677 conditions per place. [2023-08-27 02:49:11,675 INFO L140 encePairwiseOnDemand]: 332/342 looper letters, 1038 selfloop transitions, 517 changer transitions 9/1565 dead transitions. [2023-08-27 02:49:11,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1565 transitions, 25402 flow [2023-08-27 02:49:11,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 02:49:11,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 02:49:11,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3392 transitions. [2023-08-27 02:49:11,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312229849987287 [2023-08-27 02:49:11,678 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3392 transitions. [2023-08-27 02:49:11,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3392 transitions. [2023-08-27 02:49:11,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:49:11,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3392 transitions. [2023-08-27 02:49:11,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 147.47826086956522) internal successors, (3392), 23 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:11,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 342.0) internal successors, (8208), 24 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:11,688 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 342.0) internal successors, (8208), 24 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:11,688 INFO L175 Difference]: Start difference. First operand has 447 places, 1011 transitions, 16954 flow. Second operand 23 states and 3392 transitions. [2023-08-27 02:49:11,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 1565 transitions, 25402 flow [2023-08-27 02:49:12,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1565 transitions, 23074 flow, removed 501 selfloop flow, removed 28 redundant places. [2023-08-27 02:49:12,376 INFO L231 Difference]: Finished difference. Result has 443 places, 1007 transitions, 15948 flow [2023-08-27 02:49:12,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=12872, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=905, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=415, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=15948, PETRI_PLACES=443, PETRI_TRANSITIONS=1007} [2023-08-27 02:49:12,376 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 400 predicate places. [2023-08-27 02:49:12,376 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 1007 transitions, 15948 flow [2023-08-27 02:49:12,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 141.25) internal successors, (2825), 20 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:12,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:49:12,377 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:49:12,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-27 02:49:12,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 02:49:12,577 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:49:12,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:49:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash 192384570, now seen corresponding path program 3 times [2023-08-27 02:49:12,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:49:12,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890916769] [2023-08-27 02:49:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:49:12,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:49:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:49:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 02:49:12,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:49:12,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890916769] [2023-08-27 02:49:12,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890916769] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:49:12,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522940494] [2023-08-27 02:49:12,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:49:12,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:49:12,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:49:12,841 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 02:49:12,851 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 02:49:13,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-27 02:49:13,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:49:13,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 02:49:13,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:49:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 02:49:13,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:49:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 02:49:13,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522940494] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:49:13,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:49:13,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2023-08-27 02:49:13,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764075184] [2023-08-27 02:49:13,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:49:13,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 02:49:13,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:49:13,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 02:49:13,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2023-08-27 02:49:13,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 342 [2023-08-27 02:49:13,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 1007 transitions, 15948 flow. Second operand has 25 states, 25 states have (on average 136.12) internal successors, (3403), 25 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:13,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:49:13,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 342 [2023-08-27 02:49:13,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:49:22,068 INFO L124 PetriNetUnfolderBase]: 18708/34715 cut-off events. [2023-08-27 02:49:22,069 INFO L125 PetriNetUnfolderBase]: For 134633/134633 co-relation queries the response was YES. [2023-08-27 02:49:22,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173993 conditions, 34715 events. 18708/34715 cut-off events. For 134633/134633 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 255078 event pairs, 4666 based on Foata normal form. 158/34873 useless extension candidates. Maximal degree in co-relation 159163. Up to 6613 conditions per place. [2023-08-27 02:49:22,353 INFO L140 encePairwiseOnDemand]: 333/342 looper letters, 1542 selfloop transitions, 607 changer transitions 9/2159 dead transitions. [2023-08-27 02:49:22,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 2159 transitions, 33687 flow [2023-08-27 02:49:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-27 02:49:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-27 02:49:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4289 transitions. [2023-08-27 02:49:22,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41803118908382064 [2023-08-27 02:49:22,358 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4289 transitions. [2023-08-27 02:49:22,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4289 transitions. [2023-08-27 02:49:22,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:49:22,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4289 transitions. [2023-08-27 02:49:22,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 142.96666666666667) internal successors, (4289), 30 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:22,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 342.0) internal successors, (10602), 31 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:22,370 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 342.0) internal successors, (10602), 31 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:22,370 INFO L175 Difference]: Start difference. First operand has 443 places, 1007 transitions, 15948 flow. Second operand 30 states and 4289 transitions. [2023-08-27 02:49:22,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 2159 transitions, 33687 flow [2023-08-27 02:49:23,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 2159 transitions, 32821 flow, removed 245 selfloop flow, removed 9 redundant places. [2023-08-27 02:49:23,443 INFO L231 Difference]: Finished difference. Result has 473 places, 1188 transitions, 20764 flow [2023-08-27 02:49:23,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=15391, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1007, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=477, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=20764, PETRI_PLACES=473, PETRI_TRANSITIONS=1188} [2023-08-27 02:49:23,444 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 430 predicate places. [2023-08-27 02:49:23,444 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 1188 transitions, 20764 flow [2023-08-27 02:49:23,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 136.12) internal successors, (3403), 25 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:23,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:49:23,445 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:49:23,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-27 02:49:23,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-27 02:49:23,646 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:49:23,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:49:23,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1141465516, now seen corresponding path program 3 times [2023-08-27 02:49:23,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:49:23,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009156219] [2023-08-27 02:49:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:49:23,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:49:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:49:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:49:27,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:49:27,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009156219] [2023-08-27 02:49:27,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009156219] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:49:27,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612654991] [2023-08-27 02:49:27,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:49:27,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:49:27,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:49:27,688 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 02:49:27,689 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 02:49:27,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 02:49:27,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:49:27,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 89 conjunts are in the unsatisfiable core [2023-08-27 02:49:27,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:49:28,054 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 02:49:28,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:49:28,356 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2023-08-27 02:49:28,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:49:28,650 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2023-08-27 02:49:29,264 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2023-08-27 02:49:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:49:29,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:49:34,333 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 02:49:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:49:34,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612654991] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:49:34,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:49:34,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 78 [2023-08-27 02:49:34,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617851334] [2023-08-27 02:49:34,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:49:34,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-08-27 02:49:34,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:49:34,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-08-27 02:49:34,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=5717, Unknown=1, NotChecked=0, Total=6162 [2023-08-27 02:49:34,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 02:49:34,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 1188 transitions, 20764 flow. Second operand has 79 states, 79 states have (on average 101.0126582278481) internal successors, (7980), 79 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:49:34,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:49:34,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 02:49:34,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:54,797 INFO L124 PetriNetUnfolderBase]: 33156/61596 cut-off events. [2023-08-27 02:55:54,798 INFO L125 PetriNetUnfolderBase]: For 257069/257069 co-relation queries the response was YES. [2023-08-27 02:55:55,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314688 conditions, 61596 events. 33156/61596 cut-off events. For 257069/257069 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 488516 event pairs, 3691 based on Foata normal form. 66/61662 useless extension candidates. Maximal degree in co-relation 298397. Up to 11579 conditions per place. [2023-08-27 02:55:55,810 INFO L140 encePairwiseOnDemand]: 324/342 looper letters, 1301 selfloop transitions, 1932 changer transitions 209/3443 dead transitions. [2023-08-27 02:55:55,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 3443 transitions, 50181 flow [2023-08-27 02:55:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2023-08-27 02:55:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2023-08-27 02:55:55,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 30058 transitions. [2023-08-27 02:55:55,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3062330623306233 [2023-08-27 02:55:55,838 INFO L72 ComplementDD]: Start complementDD. Operand 287 states and 30058 transitions. [2023-08-27 02:55:55,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 287 states and 30058 transitions. [2023-08-27 02:55:55,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:55,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 287 states and 30058 transitions. [2023-08-27 02:55:55,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 288 states, 287 states have (on average 104.73170731707317) internal successors, (30058), 287 states have internal predecessors, (30058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:55,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 288 states, 288 states have (on average 342.0) internal successors, (98496), 288 states have internal predecessors, (98496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:55,951 INFO L81 ComplementDD]: Finished complementDD. Result has 288 states, 288 states have (on average 342.0) internal successors, (98496), 288 states have internal predecessors, (98496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:55,952 INFO L175 Difference]: Start difference. First operand has 473 places, 1188 transitions, 20764 flow. Second operand 287 states and 30058 transitions. [2023-08-27 02:55:55,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 3443 transitions, 50181 flow [2023-08-27 02:55:58,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 749 places, 3443 transitions, 49163 flow, removed 241 selfloop flow, removed 10 redundant places. [2023-08-27 02:55:58,522 INFO L231 Difference]: Finished difference. Result has 762 places, 2106 transitions, 40483 flow [2023-08-27 02:55:58,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=20258, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1031, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=287, PETRI_FLOW=40483, PETRI_PLACES=762, PETRI_TRANSITIONS=2106} [2023-08-27 02:55:58,523 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 719 predicate places. [2023-08-27 02:55:58,524 INFO L495 AbstractCegarLoop]: Abstraction has has 762 places, 2106 transitions, 40483 flow [2023-08-27 02:55:58,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 101.0126582278481) internal successors, (7980), 79 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:58,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:58,525 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:58,531 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 02:55:58,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-27 02:55:58,732 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:58,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:58,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1125369112, now seen corresponding path program 4 times [2023-08-27 02:55:58,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:58,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117018763] [2023-08-27 02:55:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:58,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:05,622 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:05,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:05,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117018763] [2023-08-27 02:56:05,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117018763] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:56:05,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296120677] [2023-08-27 02:56:05,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 02:56:05,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:56:05,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:56:05,623 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 02:56:05,625 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 02:56:05,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 02:56:05,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:56:05,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 103 conjunts are in the unsatisfiable core [2023-08-27 02:56:05,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:56:05,799 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:56:05,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-08-27 02:56:06,414 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:56:06,578 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-27 02:56:07,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:56:07,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-08-27 02:56:07,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:56:07,950 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-08-27 02:56:09,667 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-08-27 02:56:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:09,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:56:15,867 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1122 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1122) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2023-08-27 02:56:15,876 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:56:15,876 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 02:56:15,889 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:56:15,890 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-08-27 02:56:15,895 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-08-27 02:56:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:16,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296120677] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:56:16,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:56:16,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 26] total 81 [2023-08-27 02:56:16,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409777843] [2023-08-27 02:56:16,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:56:16,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-08-27 02:56:16,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:16,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-08-27 02:56:16,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=6189, Unknown=1, NotChecked=160, Total=6806 [2023-08-27 02:56:16,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 342 [2023-08-27 02:56:16,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 762 places, 2106 transitions, 40483 flow. Second operand has 83 states, 83 states have (on average 100.91566265060241) internal successors, (8376), 83 states have internal predecessors, (8376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:16,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:16,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 342 [2023-08-27 02:56:16,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:00:52,926 WARN L234 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 175 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-08-27 03:01:00,396 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 03:01:00,396 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 03:01:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-08-27 03:01:00,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err2ASSERT_VIOLATIONASSERT (21 of 22 remaining) [2023-08-27 03:01:00,450 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 03:01:00,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 03:01:00,645 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 197 known predicates. [2023-08-27 03:01:00,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 22 remaining) [2023-08-27 03:01:00,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 22 remaining) [2023-08-27 03:01:00,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err2ASSERT_VIOLATIONASSERT (18 of 22 remaining) [2023-08-27 03:01:00,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-27 03:01:00,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-27 03:01:00,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-27 03:01:00,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-27 03:01:00,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-27 03:01:00,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-27 03:01:00,648 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-27 03:01:00,648 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-27 03:01:00,648 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err2ASSERT_VIOLATIONASSERT (9 of 22 remaining) [2023-08-27 03:01:00,648 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err2ASSERT_VIOLATIONASSERT (8 of 22 remaining) [2023-08-27 03:01:00,648 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-27 03:01:00,648 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-27 03:01:00,648 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-27 03:01:00,648 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-27 03:01:00,648 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-27 03:01:00,648 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-27 03:01:00,648 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-27 03:01:00,648 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-27 03:01:00,649 INFO L445 BasicCegarLoop]: Path program histogram: [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:01:00,653 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 03:01:00,653 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 03:01:00,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:01:00 BasicIcfg [2023-08-27 03:01:00,656 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 03:01:00,656 INFO L158 Benchmark]: Toolchain (without parser) took 819819.67ms. Allocated memory was 356.5MB in the beginning and 8.9GB in the end (delta: 8.6GB). Free memory was 330.3MB in the beginning and 5.6GB in the end (delta: -5.3GB). Peak memory consumption was 3.3GB. Max. memory is 16.0GB. [2023-08-27 03:01:00,657 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 356.5MB. Free memory was 333.9MB in the beginning and 333.8MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 03:01:00,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 582.98ms. Allocated memory is still 356.5MB. Free memory was 330.3MB in the beginning and 301.0MB in the end (delta: 29.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-27 03:01:00,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.61ms. Allocated memory is still 356.5MB. Free memory was 301.0MB in the beginning and 298.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:01:00,658 INFO L158 Benchmark]: Boogie Preprocessor took 51.51ms. Allocated memory is still 356.5MB. Free memory was 298.4MB in the beginning and 296.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:01:00,659 INFO L158 Benchmark]: RCFGBuilder took 450.78ms. Allocated memory is still 356.5MB. Free memory was 296.3MB in the beginning and 277.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 03:01:00,659 INFO L158 Benchmark]: TraceAbstraction took 818680.37ms. Allocated memory was 356.5MB in the beginning and 8.9GB in the end (delta: 8.6GB). Free memory was 276.9MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 3.2GB. Max. memory is 16.0GB. [2023-08-27 03:01:00,660 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 356.5MB. Free memory was 333.9MB in the beginning and 333.8MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 582.98ms. Allocated memory is still 356.5MB. Free memory was 330.3MB in the beginning and 301.0MB in the end (delta: 29.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.61ms. Allocated memory is still 356.5MB. Free memory was 301.0MB in the beginning and 298.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 51.51ms. Allocated memory is still 356.5MB. Free memory was 298.4MB in the beginning and 296.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 450.78ms. Allocated memory is still 356.5MB. Free memory was 296.3MB in the beginning and 277.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 818680.37ms. Allocated memory was 356.5MB in the beginning and 8.9GB in the end (delta: 8.6GB). Free memory was 276.9MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 3.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 753]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [753] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 159 PlacesBefore, 43 PlacesAfterwards, 164 TransitionsBefore, 41 TransitionsAfterwards, 9540 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 112 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 7 ChoiceCompositions, 167 TotalNumberOfCompositions, 14007 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10772, independent: 10556, independent conditional: 0, independent unconditional: 10556, dependent: 216, dependent conditional: 0, dependent unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5647, independent: 5590, independent conditional: 0, independent unconditional: 5590, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10772, independent: 4966, independent conditional: 0, independent unconditional: 4966, dependent: 159, dependent conditional: 0, dependent unconditional: 159, unknown: 5647, unknown conditional: 0, unknown unconditional: 5647] , Statistics on independence cache: Total cache size (in pairs): 242, Positive cache size: 222, Positive conditional cache size: 0, Positive unconditional cache size: 222, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 197 known predicates. - TimeoutResultAtElement [Line: 1021]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 197 known predicates. - TimeoutResultAtElement [Line: 1022]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 197 known predicates. - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 197 known predicates. - TimeoutResultAtElement [Line: 991]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 197 known predicates. - TimeoutResultAtElement [Line: 945]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 197 known predicates. - TimeoutResultAtElement [Line: 991]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 197 known predicates. - TimeoutResultAtElement [Line: 945]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 197 known predicates. - TimeoutResultAtElement [Line: 1005]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 197 known predicates. - TimeoutResultAtElement [Line: 1005]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 197 known predicates. - TimeoutResultAtElement [Line: 949]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 197 known predicates. - TimeoutResultAtElement [Line: 949]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 197 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 280 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 818.5s, OverallIterations: 25, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 764.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 174 mSolverCounterUnknown, 17965 SdHoareTripleChecker+Valid, 110.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17965 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 103.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1156 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 1381 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41731 IncrementalHoareTripleChecker+Invalid, 44442 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1381 mSolverCounterUnsat, 4 mSDtfsCounter, 41731 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1886 GetRequests, 620 SyntacticMatches, 28 SemanticMatches, 1237 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 84419 ImplicationChecksByTransitivity, 620.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40483occurred in iteration=24, InterpolantAutomatonStates: 768, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 43.8s InterpolantComputationTime, 1039 NumberOfCodeBlocks, 1031 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 1330 ConstructedInterpolants, 21 QuantifiedInterpolants, 35714 SizeOfPredicates, 207 NumberOfNonLiveVariables, 4027 ConjunctsInSsa, 527 ConjunctsInUnsatCore, 47 InterpolantComputations, 16 PerfectInterpolantSequences, 161/909 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown