/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/stack_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:35:47,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:35:47,910 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 09:35:47,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:35:47,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:35:47,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:35:47,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:35:47,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:35:47,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:35:47,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:35:47,958 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:35:47,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:35:47,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:35:47,959 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:35:47,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:35:47,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:35:47,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:35:47,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:35:47,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:35:47,961 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:35:47,961 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:35:47,962 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:35:47,962 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:35:47,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:35:47,963 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:35:47,963 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:35:47,963 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:35:47,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:35:47,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:35:47,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:35:47,965 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:35:47,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:35:47,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:35:47,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:35:47,965 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:35:47,966 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:35:48,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:35:48,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:35:48,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:35:48,277 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:35:48,277 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:35:48,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-1.i [2023-08-27 09:35:49,421 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:35:49,671 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:35:49,671 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i [2023-08-27 09:35:49,696 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36de70b97/a3168ad735c24f29bb30ef7aca7c7581/FLAG1b4787128 [2023-08-27 09:35:49,709 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36de70b97/a3168ad735c24f29bb30ef7aca7c7581 [2023-08-27 09:35:49,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:35:49,712 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:35:49,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:35:49,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:35:49,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:35:49,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:35:49" (1/1) ... [2023-08-27 09:35:49,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@340f4e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:49, skipping insertion in model container [2023-08-27 09:35:49,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:35:49" (1/1) ... [2023-08-27 09:35:49,761 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:35:50,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:35:50,223 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:35:50,251 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 09:35:50,253 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 09:35:50,258 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-27 09:35:50,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:35:50,359 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:35:50,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:50 WrapperNode [2023-08-27 09:35:50,360 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:35:50,361 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:35:50,361 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:35:50,361 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:35:50,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:50" (1/1) ... [2023-08-27 09:35:50,396 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:50" (1/1) ... [2023-08-27 09:35:50,435 INFO L138 Inliner]: procedures = 277, calls = 40, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 170 [2023-08-27 09:35:50,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:35:50,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:35:50,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:35:50,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:35:50,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:50" (1/1) ... [2023-08-27 09:35:50,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:50" (1/1) ... [2023-08-27 09:35:50,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:50" (1/1) ... [2023-08-27 09:35:50,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:50" (1/1) ... [2023-08-27 09:35:50,468 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:50" (1/1) ... [2023-08-27 09:35:50,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:50" (1/1) ... [2023-08-27 09:35:50,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:50" (1/1) ... [2023-08-27 09:35:50,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:50" (1/1) ... [2023-08-27 09:35:50,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:35:50,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:35:50,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:35:50,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:35:50,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:50" (1/1) ... [2023-08-27 09:35:50,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:35:50,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:35:50,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 09:35:50,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 09:35:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-27 09:35:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-27 09:35:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-27 09:35:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-27 09:35:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:35:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:35:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 09:35:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:35:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 09:35:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:35:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:35:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:35:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:35:50,568 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 09:35:50,749 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:35:50,750 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:35:50,973 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:35:50,981 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:35:50,981 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 09:35:50,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:35:50 BoogieIcfgContainer [2023-08-27 09:35:50,983 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:35:50,985 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:35:50,985 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:35:50,988 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:35:50,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:35:49" (1/3) ... [2023-08-27 09:35:50,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d00697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:35:50, skipping insertion in model container [2023-08-27 09:35:50,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:35:50" (2/3) ... [2023-08-27 09:35:50,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d00697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:35:50, skipping insertion in model container [2023-08-27 09:35:50,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:35:50" (3/3) ... [2023-08-27 09:35:50,990 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2023-08-27 09:35:51,004 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:35:51,005 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-27 09:35:51,005 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:35:51,113 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 09:35:51,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 182 transitions, 380 flow [2023-08-27 09:35:51,217 INFO L124 PetriNetUnfolderBase]: 12/180 cut-off events. [2023-08-27 09:35:51,217 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:35:51,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 180 events. 12/180 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 503 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2023-08-27 09:35:51,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 182 transitions, 380 flow [2023-08-27 09:35:51,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 171 transitions, 351 flow [2023-08-27 09:35:51,239 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:35:51,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 171 transitions, 351 flow [2023-08-27 09:35:51,266 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 171 transitions, 351 flow [2023-08-27 09:35:51,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 171 transitions, 351 flow [2023-08-27 09:35:51,327 INFO L124 PetriNetUnfolderBase]: 12/171 cut-off events. [2023-08-27 09:35:51,328 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 09:35:51,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 171 events. 12/171 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 433 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2023-08-27 09:35:51,338 INFO L119 LiptonReduction]: Number of co-enabled transitions 10550 [2023-08-27 09:35:55,093 INFO L134 LiptonReduction]: Checked pairs total: 14717 [2023-08-27 09:35:55,093 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-08-27 09:35:55,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:35:55,110 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;@78d03652, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:35:55,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-27 09:35:55,113 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:35:55,113 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-27 09:35:55,113 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 09:35:55,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:35:55,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 09:35:55,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:35:55,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:35:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash 731787429, now seen corresponding path program 1 times [2023-08-27 09:35:55,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:35:55,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772843760] [2023-08-27 09:35:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:35:55,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:35:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:35:55,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:35:55,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:35:55,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772843760] [2023-08-27 09:35:55,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772843760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:35:55,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:35:55,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:35:55,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122238424] [2023-08-27 09:35:55,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:35:55,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:35:55,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:35:55,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:35:55,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:35:55,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 351 [2023-08-27 09:35:55,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:55,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:35:55,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 351 [2023-08-27 09:35:55,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:35:55,776 INFO L124 PetriNetUnfolderBase]: 1600/2589 cut-off events. [2023-08-27 09:35:55,776 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-08-27 09:35:55,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 2589 events. 1600/2589 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12422 event pairs, 464 based on Foata normal form. 0/1716 useless extension candidates. Maximal degree in co-relation 4920. Up to 1581 conditions per place. [2023-08-27 09:35:55,796 INFO L140 encePairwiseOnDemand]: 342/351 looper letters, 69 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-08-27 09:35:55,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 74 transitions, 309 flow [2023-08-27 09:35:55,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:35:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:35:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2023-08-27 09:35:55,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270655270655271 [2023-08-27 09:35:55,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2023-08-27 09:35:55,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2023-08-27 09:35:55,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:35:55,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2023-08-27 09:35:55,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:55,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:55,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:55,834 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 93 flow. Second operand 3 states and 555 transitions. [2023-08-27 09:35:55,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 74 transitions, 309 flow [2023-08-27 09:35:55,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 301 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 09:35:55,841 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 126 flow [2023-08-27 09:35:55,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-08-27 09:35:55,846 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-08-27 09:35:55,846 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 126 flow [2023-08-27 09:35:55,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:55,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:35:55,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:35:55,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:35:55,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:35:55,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:35:55,856 INFO L85 PathProgramCache]: Analyzing trace with hash 236537514, now seen corresponding path program 1 times [2023-08-27 09:35:55,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:35:55,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430090655] [2023-08-27 09:35:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:35:55,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:35:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:35:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:35:55,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:35:55,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430090655] [2023-08-27 09:35:55,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430090655] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:35:55,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:35:55,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:35:55,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890247018] [2023-08-27 09:35:55,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:35:55,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:35:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:35:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:35:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:35:55,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 351 [2023-08-27 09:35:55,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:55,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:35:55,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 351 [2023-08-27 09:35:55,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:35:56,272 INFO L124 PetriNetUnfolderBase]: 1716/2801 cut-off events. [2023-08-27 09:35:56,273 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2023-08-27 09:35:56,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6080 conditions, 2801 events. 1716/2801 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13791 event pairs, 751 based on Foata normal form. 0/2034 useless extension candidates. Maximal degree in co-relation 5741. Up to 2357 conditions per place. [2023-08-27 09:35:56,287 INFO L140 encePairwiseOnDemand]: 348/351 looper letters, 63 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-27 09:35:56,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 305 flow [2023-08-27 09:35:56,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:35:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:35:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-08-27 09:35:56,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299145299145299 [2023-08-27 09:35:56,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-08-27 09:35:56,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-08-27 09:35:56,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:35:56,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-08-27 09:35:56,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:56,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:56,295 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:56,296 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 126 flow. Second operand 3 states and 558 transitions. [2023-08-27 09:35:56,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 305 flow [2023-08-27 09:35:56,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:35:56,303 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 130 flow [2023-08-27 09:35:56,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-08-27 09:35:56,304 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-08-27 09:35:56,304 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 130 flow [2023-08-27 09:35:56,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:56,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:35:56,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:35:56,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 09:35:56,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:35:56,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:35:56,311 INFO L85 PathProgramCache]: Analyzing trace with hash 236506715, now seen corresponding path program 1 times [2023-08-27 09:35:56,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:35:56,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797688535] [2023-08-27 09:35:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:35:56,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:35:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:35:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:35:56,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:35:56,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797688535] [2023-08-27 09:35:56,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797688535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:35:56,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:35:56,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:35:56,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749752436] [2023-08-27 09:35:56,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:35:56,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:35:56,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:35:56,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:35:56,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:35:56,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 09:35:56,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:56,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:35:56,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 09:35:56,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:35:56,789 INFO L124 PetriNetUnfolderBase]: 2514/4177 cut-off events. [2023-08-27 09:35:56,789 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-08-27 09:35:56,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9140 conditions, 4177 events. 2514/4177 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 23108 event pairs, 1358 based on Foata normal form. 0/3347 useless extension candidates. Maximal degree in co-relation 8764. Up to 2778 conditions per place. [2023-08-27 09:35:56,811 INFO L140 encePairwiseOnDemand]: 346/351 looper letters, 78 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-27 09:35:56,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 386 flow [2023-08-27 09:35:56,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:35:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:35:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-27 09:35:56,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375118708452041 [2023-08-27 09:35:56,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-27 09:35:56,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-27 09:35:56,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:35:56,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-27 09:35:56,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:56,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:56,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:56,819 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 130 flow. Second operand 3 states and 566 transitions. [2023-08-27 09:35:56,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 81 transitions, 386 flow [2023-08-27 09:35:56,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 81 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:35:56,822 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 144 flow [2023-08-27 09:35:56,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2023-08-27 09:35:56,823 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2023-08-27 09:35:56,823 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 144 flow [2023-08-27 09:35:56,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:56,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:35:56,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:35:56,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 09:35:56,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:35:56,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:35:56,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2104264202, now seen corresponding path program 1 times [2023-08-27 09:35:56,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:35:56,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801036294] [2023-08-27 09:35:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:35:56,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:35:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:35:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:35:56,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:35:56,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801036294] [2023-08-27 09:35:56,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801036294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:35:56,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:35:56,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:35:56,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885933101] [2023-08-27 09:35:56,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:35:56,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:35:56,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:35:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:35:56,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:35:56,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 09:35:56,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:56,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:35:56,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 09:35:56,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:35:57,270 INFO L124 PetriNetUnfolderBase]: 2712/4425 cut-off events. [2023-08-27 09:35:57,270 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2023-08-27 09:35:57,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10489 conditions, 4425 events. 2712/4425 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 24116 event pairs, 2085 based on Foata normal form. 114/3749 useless extension candidates. Maximal degree in co-relation 10098. Up to 4073 conditions per place. [2023-08-27 09:35:57,297 INFO L140 encePairwiseOnDemand]: 348/351 looper letters, 67 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-08-27 09:35:57,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 368 flow [2023-08-27 09:35:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:35:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:35:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2023-08-27 09:35:57,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251661918328585 [2023-08-27 09:35:57,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2023-08-27 09:35:57,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2023-08-27 09:35:57,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:35:57,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2023-08-27 09:35:57,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:57,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:57,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:57,303 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 144 flow. Second operand 3 states and 553 transitions. [2023-08-27 09:35:57,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 368 flow [2023-08-27 09:35:57,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:35:57,306 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 162 flow [2023-08-27 09:35:57,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-08-27 09:35:57,307 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2023-08-27 09:35:57,307 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 162 flow [2023-08-27 09:35:57,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:57,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:35:57,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:35:57,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 09:35:57,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:35:57,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:35:57,308 INFO L85 PathProgramCache]: Analyzing trace with hash 807682009, now seen corresponding path program 1 times [2023-08-27 09:35:57,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:35:57,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89913304] [2023-08-27 09:35:57,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:35:57,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:35:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:35:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:35:57,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:35:57,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89913304] [2023-08-27 09:35:57,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89913304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:35:57,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:35:57,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:35:57,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287949784] [2023-08-27 09:35:57,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:35:57,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:35:57,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:35:57,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:35:57,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:35:57,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 09:35:57,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:57,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:35:57,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 09:35:57,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:35:57,722 INFO L124 PetriNetUnfolderBase]: 2802/4545 cut-off events. [2023-08-27 09:35:57,722 INFO L125 PetriNetUnfolderBase]: For 1126/1126 co-relation queries the response was YES. [2023-08-27 09:35:57,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11222 conditions, 4545 events. 2802/4545 cut-off events. For 1126/1126 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26373 event pairs, 1307 based on Foata normal form. 0/3753 useless extension candidates. Maximal degree in co-relation 8704. Up to 3967 conditions per place. [2023-08-27 09:35:57,748 INFO L140 encePairwiseOnDemand]: 346/351 looper letters, 76 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-27 09:35:57,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 79 transitions, 413 flow [2023-08-27 09:35:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:35:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:35:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-08-27 09:35:57,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533713200379867 [2023-08-27 09:35:57,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-08-27 09:35:57,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-08-27 09:35:57,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:35:57,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-08-27 09:35:57,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:57,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:57,755 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:57,755 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 162 flow. Second operand 3 states and 562 transitions. [2023-08-27 09:35:57,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 79 transitions, 413 flow [2023-08-27 09:35:57,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:35:57,761 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 174 flow [2023-08-27 09:35:57,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-27 09:35:57,762 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2023-08-27 09:35:57,762 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 174 flow [2023-08-27 09:35:57,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:57,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:35:57,763 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:35:57,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 09:35:57,763 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:35:57,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:35:57,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1570101446, now seen corresponding path program 1 times [2023-08-27 09:35:57,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:35:57,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879764203] [2023-08-27 09:35:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:35:57,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:35:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:35:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:35:57,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:35:57,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879764203] [2023-08-27 09:35:57,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879764203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:35:57,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:35:57,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:35:57,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240633369] [2023-08-27 09:35:57,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:35:57,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:35:57,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:35:57,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:35:57,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:35:57,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 09:35:57,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:57,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:35:57,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 09:35:57,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:35:58,125 INFO L124 PetriNetUnfolderBase]: 2519/4206 cut-off events. [2023-08-27 09:35:58,125 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2023-08-27 09:35:58,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10525 conditions, 4206 events. 2519/4206 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 23802 event pairs, 343 based on Foata normal form. 0/3694 useless extension candidates. Maximal degree in co-relation 10102. Up to 3400 conditions per place. [2023-08-27 09:35:58,149 INFO L140 encePairwiseOnDemand]: 347/351 looper letters, 67 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-08-27 09:35:58,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 403 flow [2023-08-27 09:35:58,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:35:58,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:35:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 550 transitions. [2023-08-27 09:35:58,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223171889838556 [2023-08-27 09:35:58,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 550 transitions. [2023-08-27 09:35:58,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 550 transitions. [2023-08-27 09:35:58,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:35:58,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 550 transitions. [2023-08-27 09:35:58,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:58,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:58,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:58,156 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 174 flow. Second operand 3 states and 550 transitions. [2023-08-27 09:35:58,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 403 flow [2023-08-27 09:35:58,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:35:58,160 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 184 flow [2023-08-27 09:35:58,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-08-27 09:35:58,161 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2023-08-27 09:35:58,161 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 184 flow [2023-08-27 09:35:58,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:58,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:35:58,161 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:35:58,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 09:35:58,162 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:35:58,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:35:58,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1570101474, now seen corresponding path program 1 times [2023-08-27 09:35:58,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:35:58,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509362940] [2023-08-27 09:35:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:35:58,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:35:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:35:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:35:58,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:35:58,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509362940] [2023-08-27 09:35:58,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509362940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:35:58,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:35:58,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:35:58,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146724429] [2023-08-27 09:35:58,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:35:58,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:35:58,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:35:58,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:35:58,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:35:58,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 09:35:58,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:58,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:35:58,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 09:35:58,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:35:58,527 INFO L124 PetriNetUnfolderBase]: 2397/4000 cut-off events. [2023-08-27 09:35:58,528 INFO L125 PetriNetUnfolderBase]: For 2139/2139 co-relation queries the response was YES. [2023-08-27 09:35:58,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10367 conditions, 4000 events. 2397/4000 cut-off events. For 2139/2139 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 22381 event pairs, 119 based on Foata normal form. 84/3666 useless extension candidates. Maximal degree in co-relation 9946. Up to 3690 conditions per place. [2023-08-27 09:35:58,549 INFO L140 encePairwiseOnDemand]: 349/351 looper letters, 69 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-27 09:35:58,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 407 flow [2023-08-27 09:35:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:35:58,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:35:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2023-08-27 09:35:58,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204178537511871 [2023-08-27 09:35:58,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2023-08-27 09:35:58,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2023-08-27 09:35:58,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:35:58,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2023-08-27 09:35:58,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:58,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:58,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:58,556 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 184 flow. Second operand 3 states and 548 transitions. [2023-08-27 09:35:58,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 407 flow [2023-08-27 09:35:58,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 403 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:35:58,561 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 178 flow [2023-08-27 09:35:58,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-08-27 09:35:58,562 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2023-08-27 09:35:58,562 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 178 flow [2023-08-27 09:35:58,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:58,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:35:58,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:35:58,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 09:35:58,563 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:35:58,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:35:58,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1248618555, now seen corresponding path program 1 times [2023-08-27 09:35:58,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:35:58,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229162521] [2023-08-27 09:35:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:35:58,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:35:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:35:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:35:58,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:35:58,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229162521] [2023-08-27 09:35:58,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229162521] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:35:58,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444596023] [2023-08-27 09:35:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:35:58,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:35:58,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:35:58,637 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:35:58,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 09:35:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:35:58,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 09:35:58,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:35:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:35:58,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:35:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:35:58,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444596023] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:35:58,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:35:58,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-27 09:35:58,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365387684] [2023-08-27 09:35:58,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:35:58,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 09:35:58,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:35:58,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 09:35:58,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-27 09:35:58,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 351 [2023-08-27 09:35:58,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 178 flow. Second operand has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:58,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:35:58,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 351 [2023-08-27 09:35:58,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:35:59,788 INFO L124 PetriNetUnfolderBase]: 4759/7812 cut-off events. [2023-08-27 09:35:59,788 INFO L125 PetriNetUnfolderBase]: For 3425/3425 co-relation queries the response was YES. [2023-08-27 09:35:59,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20382 conditions, 7812 events. 4759/7812 cut-off events. For 3425/3425 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 45128 event pairs, 788 based on Foata normal form. 112/7186 useless extension candidates. Maximal degree in co-relation 19748. Up to 2453 conditions per place. [2023-08-27 09:35:59,832 INFO L140 encePairwiseOnDemand]: 341/351 looper letters, 264 selfloop transitions, 42 changer transitions 0/307 dead transitions. [2023-08-27 09:35:59,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 307 transitions, 1694 flow [2023-08-27 09:35:59,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 09:35:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 09:35:59,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2738 transitions. [2023-08-27 09:35:59,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48753561253561256 [2023-08-27 09:35:59,839 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2738 transitions. [2023-08-27 09:35:59,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2738 transitions. [2023-08-27 09:35:59,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:35:59,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2738 transitions. [2023-08-27 09:35:59,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.125) internal successors, (2738), 16 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:59,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 351.0) internal successors, (5967), 17 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:59,853 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 351.0) internal successors, (5967), 17 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:59,853 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 178 flow. Second operand 16 states and 2738 transitions. [2023-08-27 09:35:59,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 307 transitions, 1694 flow [2023-08-27 09:35:59,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 307 transitions, 1687 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:35:59,866 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 499 flow [2023-08-27 09:35:59,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=499, PETRI_PLACES=72, PETRI_TRANSITIONS=86} [2023-08-27 09:35:59,867 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2023-08-27 09:35:59,867 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 499 flow [2023-08-27 09:35:59,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:35:59,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:35:59,868 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:35:59,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 09:36:00,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:36:00,074 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:36:00,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:00,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1624937682, now seen corresponding path program 1 times [2023-08-27 09:36:00,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:00,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145203470] [2023-08-27 09:36:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:00,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 09:36:00,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:00,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145203470] [2023-08-27 09:36:00,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145203470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:00,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:00,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:36:00,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510794235] [2023-08-27 09:36:00,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:00,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:36:00,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:00,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:36:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:36:00,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 351 [2023-08-27 09:36:00,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:00,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:00,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 351 [2023-08-27 09:36:00,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:01,019 INFO L124 PetriNetUnfolderBase]: 5651/9290 cut-off events. [2023-08-27 09:36:01,019 INFO L125 PetriNetUnfolderBase]: For 10548/10548 co-relation queries the response was YES. [2023-08-27 09:36:01,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27192 conditions, 9290 events. 5651/9290 cut-off events. For 10548/10548 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 56049 event pairs, 1840 based on Foata normal form. 168/8670 useless extension candidates. Maximal degree in co-relation 26452. Up to 5073 conditions per place. [2023-08-27 09:36:01,118 INFO L140 encePairwiseOnDemand]: 341/351 looper letters, 115 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2023-08-27 09:36:01,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 145 transitions, 1052 flow [2023-08-27 09:36:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:36:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:36:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 705 transitions. [2023-08-27 09:36:01,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021367521367521 [2023-08-27 09:36:01,121 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 705 transitions. [2023-08-27 09:36:01,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 705 transitions. [2023-08-27 09:36:01,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:01,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 705 transitions. [2023-08-27 09:36:01,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:01,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:01,125 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:01,125 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 499 flow. Second operand 4 states and 705 transitions. [2023-08-27 09:36:01,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 145 transitions, 1052 flow [2023-08-27 09:36:01,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 145 transitions, 998 flow, removed 26 selfloop flow, removed 1 redundant places. [2023-08-27 09:36:01,200 INFO L231 Difference]: Finished difference. Result has 73 places, 91 transitions, 601 flow [2023-08-27 09:36:01,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=601, PETRI_PLACES=73, PETRI_TRANSITIONS=91} [2023-08-27 09:36:01,202 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2023-08-27 09:36:01,202 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 91 transitions, 601 flow [2023-08-27 09:36:01,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:01,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:01,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:01,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 09:36:01,203 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:36:01,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:01,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1568941201, now seen corresponding path program 1 times [2023-08-27 09:36:01,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:01,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049303852] [2023-08-27 09:36:01,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:01,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:01,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:01,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049303852] [2023-08-27 09:36:01,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049303852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:01,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:01,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:36:01,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606080346] [2023-08-27 09:36:01,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:01,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:36:01,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:01,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:36:01,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:36:01,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 351 [2023-08-27 09:36:01,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 91 transitions, 601 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:01,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:01,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 351 [2023-08-27 09:36:01,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:01,625 INFO L124 PetriNetUnfolderBase]: 1713/3112 cut-off events. [2023-08-27 09:36:01,626 INFO L125 PetriNetUnfolderBase]: For 3158/3158 co-relation queries the response was YES. [2023-08-27 09:36:01,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9713 conditions, 3112 events. 1713/3112 cut-off events. For 3158/3158 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 17171 event pairs, 361 based on Foata normal form. 264/3236 useless extension candidates. Maximal degree in co-relation 8908. Up to 2324 conditions per place. [2023-08-27 09:36:01,645 INFO L140 encePairwiseOnDemand]: 344/351 looper letters, 64 selfloop transitions, 9 changer transitions 0/73 dead transitions. [2023-08-27 09:36:01,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 544 flow [2023-08-27 09:36:01,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:36:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:36:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-27 09:36:01,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985754985754986 [2023-08-27 09:36:01,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-27 09:36:01,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-27 09:36:01,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:01,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-27 09:36:01,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:01,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:01,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:01,652 INFO L175 Difference]: Start difference. First operand has 73 places, 91 transitions, 601 flow. Second operand 3 states and 525 transitions. [2023-08-27 09:36:01,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 544 flow [2023-08-27 09:36:01,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 511 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-27 09:36:01,669 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 339 flow [2023-08-27 09:36:01,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2023-08-27 09:36:01,671 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 21 predicate places. [2023-08-27 09:36:01,671 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 339 flow [2023-08-27 09:36:01,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:01,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:01,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:01,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 09:36:01,672 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:36:01,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:01,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1810976696, now seen corresponding path program 1 times [2023-08-27 09:36:01,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:01,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698941377] [2023-08-27 09:36:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:01,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:01,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:01,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698941377] [2023-08-27 09:36:01,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698941377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:01,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:01,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:36:01,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536442102] [2023-08-27 09:36:01,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:01,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:36:01,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:01,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:36:01,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:36:01,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 351 [2023-08-27 09:36:01,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:01,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:01,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 351 [2023-08-27 09:36:01,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:02,154 INFO L124 PetriNetUnfolderBase]: 1875/3442 cut-off events. [2023-08-27 09:36:02,155 INFO L125 PetriNetUnfolderBase]: For 3127/3127 co-relation queries the response was YES. [2023-08-27 09:36:02,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10735 conditions, 3442 events. 1875/3442 cut-off events. For 3127/3127 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 19087 event pairs, 435 based on Foata normal form. 72/3414 useless extension candidates. Maximal degree in co-relation 9890. Up to 1545 conditions per place. [2023-08-27 09:36:02,175 INFO L140 encePairwiseOnDemand]: 342/351 looper letters, 105 selfloop transitions, 15 changer transitions 0/121 dead transitions. [2023-08-27 09:36:02,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 121 transitions, 835 flow [2023-08-27 09:36:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:36:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:36:02,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 863 transitions. [2023-08-27 09:36:02,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49173789173789173 [2023-08-27 09:36:02,178 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 863 transitions. [2023-08-27 09:36:02,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 863 transitions. [2023-08-27 09:36:02,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:02,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 863 transitions. [2023-08-27 09:36:02,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 351.0) internal successors, (2106), 6 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,183 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 351.0) internal successors, (2106), 6 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,183 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 339 flow. Second operand 5 states and 863 transitions. [2023-08-27 09:36:02,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 121 transitions, 835 flow [2023-08-27 09:36:02,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 121 transitions, 816 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:36:02,191 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 424 flow [2023-08-27 09:36:02,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=424, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2023-08-27 09:36:02,191 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-08-27 09:36:02,191 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 424 flow [2023-08-27 09:36:02,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:02,192 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 09:36:02,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 09:36:02,192 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:36:02,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:02,193 INFO L85 PathProgramCache]: Analyzing trace with hash -57190909, now seen corresponding path program 1 times [2023-08-27 09:36:02,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:02,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970849875] [2023-08-27 09:36:02,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:02,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:36:02,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:02,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970849875] [2023-08-27 09:36:02,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970849875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:02,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:02,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:36:02,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938779187] [2023-08-27 09:36:02,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:02,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:36:02,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:02,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:36:02,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:36:02,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 09:36:02,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:02,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 09:36:02,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:02,533 INFO L124 PetriNetUnfolderBase]: 1660/3019 cut-off events. [2023-08-27 09:36:02,534 INFO L125 PetriNetUnfolderBase]: For 4407/4411 co-relation queries the response was YES. [2023-08-27 09:36:02,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9755 conditions, 3019 events. 1660/3019 cut-off events. For 4407/4411 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 16065 event pairs, 689 based on Foata normal form. 4/2941 useless extension candidates. Maximal degree in co-relation 7328. Up to 1671 conditions per place. [2023-08-27 09:36:02,550 INFO L140 encePairwiseOnDemand]: 347/351 looper letters, 91 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-27 09:36:02,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 96 transitions, 799 flow [2023-08-27 09:36:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:36:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:36:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-08-27 09:36:02,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5194681861348528 [2023-08-27 09:36:02,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-08-27 09:36:02,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-08-27 09:36:02,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:02,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-08-27 09:36:02,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,555 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 424 flow. Second operand 3 states and 547 transitions. [2023-08-27 09:36:02,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 96 transitions, 799 flow [2023-08-27 09:36:02,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 761 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-27 09:36:02,564 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 410 flow [2023-08-27 09:36:02,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=410, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2023-08-27 09:36:02,566 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-08-27 09:36:02,566 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 410 flow [2023-08-27 09:36:02,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:02,566 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 09:36:02,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 09:36:02,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:36:02,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:02,567 INFO L85 PathProgramCache]: Analyzing trace with hash -57190908, now seen corresponding path program 1 times [2023-08-27 09:36:02,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:02,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303161554] [2023-08-27 09:36:02,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:02,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:02,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:02,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303161554] [2023-08-27 09:36:02,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303161554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:02,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:02,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:36:02,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959828096] [2023-08-27 09:36:02,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:02,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:36:02,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:02,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:36:02,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:36:02,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 09:36:02,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:02,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 09:36:02,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:02,861 INFO L124 PetriNetUnfolderBase]: 1493/2688 cut-off events. [2023-08-27 09:36:02,861 INFO L125 PetriNetUnfolderBase]: For 3640/3652 co-relation queries the response was YES. [2023-08-27 09:36:02,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8763 conditions, 2688 events. 1493/2688 cut-off events. For 3640/3652 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 13637 event pairs, 419 based on Foata normal form. 62/2726 useless extension candidates. Maximal degree in co-relation 8090. Up to 2628 conditions per place. [2023-08-27 09:36:02,878 INFO L140 encePairwiseOnDemand]: 349/351 looper letters, 72 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-08-27 09:36:02,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 594 flow [2023-08-27 09:36:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:36:02,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:36:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2023-08-27 09:36:02,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071225071225072 [2023-08-27 09:36:02,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2023-08-27 09:36:02,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2023-08-27 09:36:02,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:02,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2023-08-27 09:36:02,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,883 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 410 flow. Second operand 3 states and 534 transitions. [2023-08-27 09:36:02,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 594 flow [2023-08-27 09:36:02,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:36:02,891 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 403 flow [2023-08-27 09:36:02,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-08-27 09:36:02,893 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-08-27 09:36:02,893 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 403 flow [2023-08-27 09:36:02,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:02,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:02,893 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, 1] [2023-08-27 09:36:02,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 09:36:02,893 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:36:02,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:02,894 INFO L85 PathProgramCache]: Analyzing trace with hash -18492030, now seen corresponding path program 1 times [2023-08-27 09:36:02,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:02,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892091729] [2023-08-27 09:36:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:02,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:03,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:03,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892091729] [2023-08-27 09:36:03,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892091729] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:03,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:03,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-27 09:36:03,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471538924] [2023-08-27 09:36:03,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:03,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 09:36:03,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:03,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 09:36:03,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-27 09:36:03,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 351 [2023-08-27 09:36:03,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 403 flow. Second operand has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:03,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:03,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 351 [2023-08-27 09:36:03,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:04,351 INFO L124 PetriNetUnfolderBase]: 2093/3753 cut-off events. [2023-08-27 09:36:04,351 INFO L125 PetriNetUnfolderBase]: For 4709/4709 co-relation queries the response was YES. [2023-08-27 09:36:04,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11823 conditions, 3753 events. 2093/3753 cut-off events. For 4709/4709 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 20571 event pairs, 643 based on Foata normal form. 0/3723 useless extension candidates. Maximal degree in co-relation 8553. Up to 2424 conditions per place. [2023-08-27 09:36:04,375 INFO L140 encePairwiseOnDemand]: 341/351 looper letters, 145 selfloop transitions, 11 changer transitions 0/157 dead transitions. [2023-08-27 09:36:04,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 157 transitions, 1139 flow [2023-08-27 09:36:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:36:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:36:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1324 transitions. [2023-08-27 09:36:04,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911997467553025 [2023-08-27 09:36:04,379 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1324 transitions. [2023-08-27 09:36:04,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1324 transitions. [2023-08-27 09:36:04,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:04,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1324 transitions. [2023-08-27 09:36:04,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.11111111111111) internal successors, (1324), 9 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:04,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 351.0) internal successors, (3510), 10 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:04,387 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 351.0) internal successors, (3510), 10 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:04,387 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 403 flow. Second operand 9 states and 1324 transitions. [2023-08-27 09:36:04,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 157 transitions, 1139 flow [2023-08-27 09:36:04,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 157 transitions, 1138 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:36:04,397 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 481 flow [2023-08-27 09:36:04,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=481, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2023-08-27 09:36:04,398 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2023-08-27 09:36:04,398 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 481 flow [2023-08-27 09:36:04,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:04,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:04,399 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, 1] [2023-08-27 09:36:04,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 09:36:04,399 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:36:04,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1873595586, now seen corresponding path program 2 times [2023-08-27 09:36:04,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:04,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919485030] [2023-08-27 09:36:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:04,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:04,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:04,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:04,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919485030] [2023-08-27 09:36:04,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919485030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:04,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:36:04,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-27 09:36:04,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509868008] [2023-08-27 09:36:04,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:04,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 09:36:04,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:04,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 09:36:04,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-27 09:36:04,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 351 [2023-08-27 09:36:04,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 481 flow. Second operand has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:04,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:04,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 351 [2023-08-27 09:36:04,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:05,784 INFO L124 PetriNetUnfolderBase]: 2592/4636 cut-off events. [2023-08-27 09:36:05,784 INFO L125 PetriNetUnfolderBase]: For 5845/5845 co-relation queries the response was YES. [2023-08-27 09:36:05,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15149 conditions, 4636 events. 2592/4636 cut-off events. For 5845/5845 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 26181 event pairs, 726 based on Foata normal form. 0/4600 useless extension candidates. Maximal degree in co-relation 11386. Up to 2300 conditions per place. [2023-08-27 09:36:05,817 INFO L140 encePairwiseOnDemand]: 342/351 looper letters, 144 selfloop transitions, 16 changer transitions 0/161 dead transitions. [2023-08-27 09:36:05,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 161 transitions, 1233 flow [2023-08-27 09:36:05,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:36:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:36:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1324 transitions. [2023-08-27 09:36:05,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911997467553025 [2023-08-27 09:36:05,822 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1324 transitions. [2023-08-27 09:36:05,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1324 transitions. [2023-08-27 09:36:05,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:05,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1324 transitions. [2023-08-27 09:36:05,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.11111111111111) internal successors, (1324), 9 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:05,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 351.0) internal successors, (3510), 10 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:05,830 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 351.0) internal successors, (3510), 10 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:05,831 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 481 flow. Second operand 9 states and 1324 transitions. [2023-08-27 09:36:05,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 161 transitions, 1233 flow [2023-08-27 09:36:05,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 161 transitions, 1233 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:36:05,845 INFO L231 Difference]: Finished difference. Result has 94 places, 79 transitions, 578 flow [2023-08-27 09:36:05,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=578, PETRI_PLACES=94, PETRI_TRANSITIONS=79} [2023-08-27 09:36:05,846 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2023-08-27 09:36:05,846 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 79 transitions, 578 flow [2023-08-27 09:36:05,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:05,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:05,847 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, 1] [2023-08-27 09:36:05,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 09:36:05,847 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:36:05,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:05,847 INFO L85 PathProgramCache]: Analyzing trace with hash 140700202, now seen corresponding path program 1 times [2023-08-27 09:36:05,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:05,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340573186] [2023-08-27 09:36:05,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:05,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:05,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:05,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340573186] [2023-08-27 09:36:05,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340573186] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:36:05,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500016568] [2023-08-27 09:36:05,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:05,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:36:05,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:36:05,941 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:36:05,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 09:36:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:06,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 09:36:06,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:36:06,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:36:06,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:36:06,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500016568] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:06,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:36:06,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-08-27 09:36:06,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828288990] [2023-08-27 09:36:06,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:06,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:36:06,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:06,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:36:06,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-27 09:36:06,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 351 [2023-08-27 09:36:06,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 79 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:06,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:06,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 351 [2023-08-27 09:36:06,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:06,681 INFO L124 PetriNetUnfolderBase]: 2561/4605 cut-off events. [2023-08-27 09:36:06,682 INFO L125 PetriNetUnfolderBase]: For 6999/6999 co-relation queries the response was YES. [2023-08-27 09:36:06,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15631 conditions, 4605 events. 2561/4605 cut-off events. For 6999/6999 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 25881 event pairs, 830 based on Foata normal form. 70/4633 useless extension candidates. Maximal degree in co-relation 12574. Up to 1659 conditions per place. [2023-08-27 09:36:06,720 INFO L140 encePairwiseOnDemand]: 341/351 looper letters, 129 selfloop transitions, 21 changer transitions 0/151 dead transitions. [2023-08-27 09:36:06,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 151 transitions, 1240 flow [2023-08-27 09:36:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 09:36:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 09:36:06,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1137 transitions. [2023-08-27 09:36:06,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627594627594628 [2023-08-27 09:36:06,724 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1137 transitions. [2023-08-27 09:36:06,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1137 transitions. [2023-08-27 09:36:06,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:06,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1137 transitions. [2023-08-27 09:36:06,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.42857142857142) internal successors, (1137), 7 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:06,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:06,731 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:06,731 INFO L175 Difference]: Start difference. First operand has 94 places, 79 transitions, 578 flow. Second operand 7 states and 1137 transitions. [2023-08-27 09:36:06,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 151 transitions, 1240 flow [2023-08-27 09:36:06,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 151 transitions, 1212 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-08-27 09:36:06,752 INFO L231 Difference]: Finished difference. Result has 100 places, 90 transitions, 741 flow [2023-08-27 09:36:06,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=741, PETRI_PLACES=100, PETRI_TRANSITIONS=90} [2023-08-27 09:36:06,753 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 56 predicate places. [2023-08-27 09:36:06,753 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 90 transitions, 741 flow [2023-08-27 09:36:06,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:06,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:06,753 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:06,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 09:36:06,958 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,SelfDestructingSolverStorable15 [2023-08-27 09:36:06,959 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:36:06,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:06,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1185644252, now seen corresponding path program 2 times [2023-08-27 09:36:06,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:06,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921839389] [2023-08-27 09:36:06,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:06,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:07,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:07,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:07,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921839389] [2023-08-27 09:36:07,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921839389] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:36:07,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40186871] [2023-08-27 09:36:07,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 09:36:07,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:36:07,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:36:07,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:36:07,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 09:36:07,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 09:36:07,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:36:07,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 09:36:07,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:36:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 09:36:07,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:36:07,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40186871] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:07,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:36:07,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-27 09:36:07,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637162146] [2023-08-27 09:36:07,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:07,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:36:07,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:07,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:36:07,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-27 09:36:07,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 351 [2023-08-27 09:36:07,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 90 transitions, 741 flow. Second operand has 5 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:07,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:07,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 351 [2023-08-27 09:36:07,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:07,716 INFO L124 PetriNetUnfolderBase]: 2563/4623 cut-off events. [2023-08-27 09:36:07,716 INFO L125 PetriNetUnfolderBase]: For 8315/8315 co-relation queries the response was YES. [2023-08-27 09:36:07,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16272 conditions, 4623 events. 2563/4623 cut-off events. For 8315/8315 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 25971 event pairs, 1484 based on Foata normal form. 30/4611 useless extension candidates. Maximal degree in co-relation 13110. Up to 3174 conditions per place. [2023-08-27 09:36:07,747 INFO L140 encePairwiseOnDemand]: 342/351 looper letters, 97 selfloop transitions, 28 changer transitions 0/126 dead transitions. [2023-08-27 09:36:07,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 126 transitions, 1185 flow [2023-08-27 09:36:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:36:07,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:36:07,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 988 transitions. [2023-08-27 09:36:07,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2023-08-27 09:36:07,751 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 988 transitions. [2023-08-27 09:36:07,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 988 transitions. [2023-08-27 09:36:07,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:07,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 988 transitions. [2023-08-27 09:36:07,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:07,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:07,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:07,757 INFO L175 Difference]: Start difference. First operand has 100 places, 90 transitions, 741 flow. Second operand 6 states and 988 transitions. [2023-08-27 09:36:07,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 126 transitions, 1185 flow [2023-08-27 09:36:07,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 126 transitions, 1171 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-27 09:36:07,779 INFO L231 Difference]: Finished difference. Result has 107 places, 93 transitions, 867 flow [2023-08-27 09:36:07,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=867, PETRI_PLACES=107, PETRI_TRANSITIONS=93} [2023-08-27 09:36:07,780 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 63 predicate places. [2023-08-27 09:36:07,780 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 867 flow [2023-08-27 09:36:07,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:07,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:07,780 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:07,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 09:36:07,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:36:07,986 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:36:07,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:07,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1185643720, now seen corresponding path program 1 times [2023-08-27 09:36:07,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:07,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092741695] [2023-08-27 09:36:07,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:07,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:08,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:36:08,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092741695] [2023-08-27 09:36:08,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092741695] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:36:08,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583529961] [2023-08-27 09:36:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:08,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:36:08,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:36:08,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:36:08,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 09:36:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:36:08,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 09:36:08,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:36:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:36:08,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:36:08,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583529961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:36:08,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:36:08,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2023-08-27 09:36:08,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806615001] [2023-08-27 09:36:08,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:36:08,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 09:36:08,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:36:08,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 09:36:08,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-27 09:36:08,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 351 [2023-08-27 09:36:08,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 867 flow. Second operand has 7 states, 7 states have (on average 156.71428571428572) internal successors, (1097), 7 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:08,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:36:08,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 351 [2023-08-27 09:36:08,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:36:08,904 INFO L124 PetriNetUnfolderBase]: 2683/4823 cut-off events. [2023-08-27 09:36:08,904 INFO L125 PetriNetUnfolderBase]: For 10220/10220 co-relation queries the response was YES. [2023-08-27 09:36:08,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17515 conditions, 4823 events. 2683/4823 cut-off events. For 10220/10220 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 26505 event pairs, 757 based on Foata normal form. 24/4811 useless extension candidates. Maximal degree in co-relation 14273. Up to 1622 conditions per place. [2023-08-27 09:36:08,925 INFO L140 encePairwiseOnDemand]: 343/351 looper letters, 158 selfloop transitions, 27 changer transitions 0/186 dead transitions. [2023-08-27 09:36:08,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 186 transitions, 1723 flow [2023-08-27 09:36:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 09:36:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 09:36:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1349 transitions. [2023-08-27 09:36:08,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804131054131054 [2023-08-27 09:36:08,929 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1349 transitions. [2023-08-27 09:36:08,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1349 transitions. [2023-08-27 09:36:08,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:36:08,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1349 transitions. [2023-08-27 09:36:08,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 168.625) internal successors, (1349), 8 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:08,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:08,936 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:08,937 INFO L175 Difference]: Start difference. First operand has 107 places, 93 transitions, 867 flow. Second operand 8 states and 1349 transitions. [2023-08-27 09:36:08,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 186 transitions, 1723 flow [2023-08-27 09:36:08,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 186 transitions, 1708 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-27 09:36:08,958 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 1027 flow [2023-08-27 09:36:08,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1027, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2023-08-27 09:36:08,959 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2023-08-27 09:36:08,959 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 1027 flow [2023-08-27 09:36:08,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.71428571428572) internal successors, (1097), 7 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:36:08,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:36:08,960 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:08,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 09:36:09,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 09:36:09,168 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:36:09,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:36:09,168 INFO L85 PathProgramCache]: Analyzing trace with hash 239237544, now seen corresponding path program 1 times [2023-08-27 09:36:09,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:36:09,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782741897] [2023-08-27 09:36:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:36:09,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:36:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:36:09,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 09:36:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:36:09,252 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 09:36:09,252 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 09:36:09,253 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONASSERT (21 of 22 remaining) [2023-08-27 09:36:09,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 22 remaining) [2023-08-27 09:36:09,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 22 remaining) [2023-08-27 09:36:09,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONASSERT (18 of 22 remaining) [2023-08-27 09:36:09,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-27 09:36:09,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-27 09:36:09,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-27 09:36:09,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-27 09:36:09,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-27 09:36:09,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-27 09:36:09,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-27 09:36:09,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-27 09:36:09,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONASSERT (9 of 22 remaining) [2023-08-27 09:36:09,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONASSERT (8 of 22 remaining) [2023-08-27 09:36:09,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-27 09:36:09,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-27 09:36:09,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-27 09:36:09,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-27 09:36:09,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-27 09:36:09,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-27 09:36:09,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-27 09:36:09,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-27 09:36:09,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 09:36:09,257 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:36:09,264 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:36:09,264 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:36:09,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:36:09 BasicIcfg [2023-08-27 09:36:09,328 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:36:09,328 INFO L158 Benchmark]: Toolchain (without parser) took 19615.94ms. Allocated memory was 413.1MB in the beginning and 954.2MB in the end (delta: 541.1MB). Free memory was 387.0MB in the beginning and 794.7MB in the end (delta: -407.7MB). Peak memory consumption was 134.5MB. Max. memory is 16.0GB. [2023-08-27 09:36:09,328 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 413.1MB. Free memory is still 389.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:36:09,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 647.06ms. Allocated memory is still 413.1MB. Free memory was 387.0MB in the beginning and 357.1MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-27 09:36:09,329 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.27ms. Allocated memory is still 413.1MB. Free memory was 357.1MB in the beginning and 354.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 09:36:09,329 INFO L158 Benchmark]: Boogie Preprocessor took 39.49ms. Allocated memory is still 413.1MB. Free memory was 354.0MB in the beginning and 352.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:36:09,329 INFO L158 Benchmark]: RCFGBuilder took 494.65ms. Allocated memory is still 413.1MB. Free memory was 352.4MB in the beginning and 383.5MB in the end (delta: -31.1MB). Peak memory consumption was 20.3MB. Max. memory is 16.0GB. [2023-08-27 09:36:09,329 INFO L158 Benchmark]: TraceAbstraction took 18342.75ms. Allocated memory was 413.1MB in the beginning and 954.2MB in the end (delta: 541.1MB). Free memory was 383.5MB in the beginning and 794.7MB in the end (delta: -411.2MB). Peak memory consumption was 130.9MB. Max. memory is 16.0GB. [2023-08-27 09:36:09,331 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 413.1MB. Free memory is still 389.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 647.06ms. Allocated memory is still 413.1MB. Free memory was 387.0MB in the beginning and 357.1MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 74.27ms. Allocated memory is still 413.1MB. Free memory was 357.1MB in the beginning and 354.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.49ms. Allocated memory is still 413.1MB. Free memory was 354.0MB in the beginning and 352.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 494.65ms. Allocated memory is still 413.1MB. Free memory was 352.4MB in the beginning and 383.5MB in the end (delta: -31.1MB). Peak memory consumption was 20.3MB. Max. memory is 16.0GB. * TraceAbstraction took 18342.75ms. Allocated memory was 413.1MB in the beginning and 954.2MB in the end (delta: 541.1MB). Free memory was 383.5MB in the beginning and 794.7MB in the end (delta: -411.2MB). Peak memory consumption was 130.9MB. 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: 3.8s, 166 PlacesBefore, 44 PlacesAfterwards, 171 TransitionsBefore, 42 TransitionsAfterwards, 10550 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 115 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 7 ChoiceCompositions, 169 TotalNumberOfCompositions, 14717 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11495, independent: 11264, independent conditional: 0, independent unconditional: 11264, dependent: 231, dependent conditional: 0, dependent unconditional: 231, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6215, independent: 6152, independent conditional: 0, independent unconditional: 6152, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11495, independent: 5112, independent conditional: 0, independent unconditional: 5112, dependent: 168, dependent conditional: 0, dependent unconditional: 168, unknown: 6215, unknown conditional: 0, unknown unconditional: 6215] , Statistics on independence cache: Total cache size (in pairs): 315, Positive cache size: 292, Positive conditional cache size: 0, Positive unconditional cache size: 292, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 20]: assertion can be violated assertion can be violated We found a FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(800)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1020] 0 pthread_t id1, id2; [L1022] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1={7:0}, id2={5:0}, m={4:0}, pthread_create(&id1, ((void *)0), t1, ((void *)0))=9, top=0] [L989] 1 int i; [L990] 1 unsigned int tmp; [L991] 1 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L1023] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1={7:0}, id2={5:0}, m={4:0}, pthread_create(&id2, ((void *)0), t2, ((void *)0))=10, top=0] [L991] COND TRUE 1 i<(800) [L994] 1 tmp = __VERIFIER_nondet_uint() [L995] CALL 1 assume_abort_if_not(tmp < (800)) [L23] COND FALSE 1 !(!cond) [L995] RET 1 assume_abort_if_not(tmp < (800)) [L996] CALL, EXPR 1 push(arr,tmp) [L1005] 2 int i; [L1006] 2 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L961] COND FALSE 1 !(top==(800)) [L968] CALL, EXPR 1 get_top() [L953] 1 return top; [L968] RET, EXPR 1 get_top() [L968] 1 stack[get_top()] = x [L969] CALL 1 inc_top() [L945] 1 top++ [L969] RET 1 inc_top() [L971] 1 return 0; [L996] RET, EXPR 1 push(arr,tmp) [L996] COND FALSE 1 !(push(arr,tmp)==(-1)) [L998] 1 flag=(1) VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=799, top=1] [L991] 1 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, tmp=799, top=1] [L1006] COND TRUE 2 i<(800) [L1009] COND TRUE 2 \read(flag) [L1011] CALL, EXPR 2 pop(arr) [L975] CALL, EXPR 2 get_top() [L953] 2 return top; [L975] RET, EXPR 2 get_top() [L975] COND FALSE 2 !(get_top()==0) [L982] CALL 2 dec_top() [L949] 2 top-- [L982] RET 2 dec_top() [L983] CALL, EXPR 2 get_top() [L953] 2 return top; [L983] RET, EXPR 2 get_top() [L983] EXPR 2 stack[get_top()] [L983] 2 return stack[get_top()]; [L1011] RET, EXPR 2 pop(arr) [L1011] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1006] 2 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1006] COND TRUE 2 i<(800) [L1009] COND TRUE 2 \read(flag) [L1011] CALL, EXPR 2 pop(arr) [L975] CALL, EXPR 2 get_top() [L953] 2 return top; [L975] RET, EXPR 2 get_top() [L975] COND TRUE 2 get_top()==0 [L978] 2 return (-2); [L1011] RET, EXPR 2 pop(arr) [L1011] COND TRUE 2 !(pop(arr)!=(-2)) [L1012] CALL 2 error() [L941] CALL 2 reach_error() [L20] COND FALSE 2 !(0) [L20] 2 __assert_fail ("0", "stack_longest-1.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\read(__PRETTY_FUNCTION__)={3201:3202}, arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1023]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 945]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 991]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 945]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 991]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 949]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 949]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 294 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: 18.1s, OverallIterations: 19, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1043 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1043 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3197 IncrementalHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 0 mSDtfsCounter, 3197 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1027occurred in iteration=18, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 413 NumberOfCodeBlocks, 404 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 377 ConstructedInterpolants, 0 QuantifiedInterpolants, 2044 SizeOfPredicates, 10 NumberOfNonLiveVariables, 956 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 23 InterpolantComputations, 17 PerfectInterpolantSequences, 54/76 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-27 09:36:09,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...