/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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:27:49,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:27:49,774 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 09:27:49,778 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:27:49,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:27:49,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:27:49,816 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:27:49,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:27:49,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:27:49,821 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:27:49,821 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:27:49,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:27:49,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:27:49,822 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:27:49,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:27:49,823 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:27:49,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:27:49,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:27:49,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:27:49,824 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:27:49,824 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:27:49,825 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:27:49,825 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:27:49,825 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:27:49,826 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:27:49,826 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:27:49,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:27:49,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:27:49,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:27:49,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:27:49,828 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:27:49,828 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:27:49,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:27:49,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:27:49,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:27:49,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:27:50,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:27:50,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:27:50,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:27:50,172 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:27:50,173 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:27:50,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2023-08-27 09:27:51,367 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:27:51,695 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:27:51,696 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2023-08-27 09:27:51,718 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09988e334/5f8ba5913c0847e5a11cd0702729fb56/FLAG88a26d720 [2023-08-27 09:27:51,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09988e334/5f8ba5913c0847e5a11cd0702729fb56 [2023-08-27 09:27:51,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:27:51,737 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:27:51,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:27:51,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:27:51,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:27:51,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:27:51" (1/1) ... [2023-08-27 09:27:51,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee35fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:51, skipping insertion in model container [2023-08-27 09:27:51,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:27:51" (1/1) ... [2023-08-27 09:27:51,794 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:27:52,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:27:52,208 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:27:52,242 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 09:27:52,243 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 09:27:52,249 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-27 09:27:52,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:27:52,333 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:27:52,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:52 WrapperNode [2023-08-27 09:27:52,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:27:52,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:27:52,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:27:52,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:27:52,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:52" (1/1) ... [2023-08-27 09:27:52,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:52" (1/1) ... [2023-08-27 09:27:52,387 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 174 [2023-08-27 09:27:52,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:27:52,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:27:52,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:27:52,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:27:52,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:52" (1/1) ... [2023-08-27 09:27:52,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:52" (1/1) ... [2023-08-27 09:27:52,399 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:52" (1/1) ... [2023-08-27 09:27:52,399 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:52" (1/1) ... [2023-08-27 09:27:52,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:52" (1/1) ... [2023-08-27 09:27:52,408 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:52" (1/1) ... [2023-08-27 09:27:52,409 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:52" (1/1) ... [2023-08-27 09:27:52,411 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:52" (1/1) ... [2023-08-27 09:27:52,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:27:52,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:27:52,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:27:52,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:27:52,415 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:52" (1/1) ... [2023-08-27 09:27:52,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:27:52,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:27:52,455 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 09:27:52,482 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 09:27:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-27 09:27:52,495 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-27 09:27:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-27 09:27:52,495 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-27 09:27:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:27:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:27:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 09:27:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:27:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 09:27:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:27:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:27:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:27:52,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:27:52,498 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 09:27:52,640 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:27:52,643 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:27:52,934 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:27:52,945 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:27:52,945 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 09:27:52,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:27:52 BoogieIcfgContainer [2023-08-27 09:27:52,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:27:52,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:27:52,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:27:52,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:27:52,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:27:51" (1/3) ... [2023-08-27 09:27:52,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a277fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:27:52, skipping insertion in model container [2023-08-27 09:27:52,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:27:52" (2/3) ... [2023-08-27 09:27:52,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a277fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:27:52, skipping insertion in model container [2023-08-27 09:27:52,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:27:52" (3/3) ... [2023-08-27 09:27:52,971 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2023-08-27 09:27:52,985 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:27:52,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-27 09:27:52,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:27:53,107 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 09:27:53,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 186 transitions, 388 flow [2023-08-27 09:27:53,244 INFO L124 PetriNetUnfolderBase]: 12/184 cut-off events. [2023-08-27 09:27:53,244 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:27:53,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 12/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 510 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2023-08-27 09:27:53,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 186 transitions, 388 flow [2023-08-27 09:27:53,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 175 transitions, 359 flow [2023-08-27 09:27:53,263 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:27:53,270 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 175 transitions, 359 flow [2023-08-27 09:27:53,273 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 175 transitions, 359 flow [2023-08-27 09:27:53,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 175 transitions, 359 flow [2023-08-27 09:27:53,302 INFO L124 PetriNetUnfolderBase]: 12/175 cut-off events. [2023-08-27 09:27:53,302 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 09:27:53,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 175 events. 12/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 432 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2023-08-27 09:27:53,308 INFO L119 LiptonReduction]: Number of co-enabled transitions 10550 [2023-08-27 09:27:57,404 INFO L134 LiptonReduction]: Checked pairs total: 14512 [2023-08-27 09:27:57,405 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-08-27 09:27:57,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:27:57,420 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;@1248934, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:27:57,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-27 09:27:57,424 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:27:57,424 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-27 09:27:57,424 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 09:27:57,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:27:57,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 09:27:57,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:27:57,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:27:57,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1194637673, now seen corresponding path program 1 times [2023-08-27 09:27:57,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:27:57,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349095513] [2023-08-27 09:27:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:27:57,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:27:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:27:57,677 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 09:27:57,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:27:57,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349095513] [2023-08-27 09:27:57,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349095513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:27:57,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:27:57,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:27:57,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800697177] [2023-08-27 09:27:57,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:27:57,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:27:57,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:27:57,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:27:57,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:27:57,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 363 [2023-08-27 09:27:57,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:57,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:27:57,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 363 [2023-08-27 09:27:57,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:27:58,007 INFO L124 PetriNetUnfolderBase]: 1600/2589 cut-off events. [2023-08-27 09:27:58,007 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-08-27 09:27:58,011 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 118. Compared 12438 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 09:27:58,023 INFO L140 encePairwiseOnDemand]: 354/363 looper letters, 69 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-08-27 09:27:58,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 74 transitions, 309 flow [2023-08-27 09:27:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:27:58,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:27:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2023-08-27 09:27:58,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206611570247934 [2023-08-27 09:27:58,036 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2023-08-27 09:27:58,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2023-08-27 09:27:58,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:27:58,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2023-08-27 09:27:58,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,050 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 93 flow. Second operand 3 states and 567 transitions. [2023-08-27 09:27:58,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 74 transitions, 309 flow [2023-08-27 09:27:58,054 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 09:27:58,056 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 126 flow [2023-08-27 09:27:58,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, 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 09:27:58,059 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-08-27 09:27:58,060 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 126 flow [2023-08-27 09:27:58,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:27:58,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:27:58,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:27:58,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:27:58,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:27:58,061 INFO L85 PathProgramCache]: Analyzing trace with hash -484624026, now seen corresponding path program 1 times [2023-08-27 09:27:58,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:27:58,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879106684] [2023-08-27 09:27:58,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:27:58,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:27:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:27:58,171 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 09:27:58,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:27:58,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879106684] [2023-08-27 09:27:58,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879106684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:27:58,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:27:58,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:27:58,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529015494] [2023-08-27 09:27:58,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:27:58,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:27:58,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:27:58,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:27:58,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:27:58,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 363 [2023-08-27 09:27:58,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:27:58,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 363 [2023-08-27 09:27:58,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:27:58,440 INFO L124 PetriNetUnfolderBase]: 1716/2801 cut-off events. [2023-08-27 09:27:58,440 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2023-08-27 09:27:58,443 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 118. Compared 13846 event pairs, 747 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 09:27:58,455 INFO L140 encePairwiseOnDemand]: 360/363 looper letters, 63 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-27 09:27:58,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 305 flow [2023-08-27 09:27:58,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:27:58,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:27:58,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2023-08-27 09:27:58,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234159779614325 [2023-08-27 09:27:58,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2023-08-27 09:27:58,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2023-08-27 09:27:58,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:27:58,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2023-08-27 09:27:58,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,463 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 126 flow. Second operand 3 states and 570 transitions. [2023-08-27 09:27:58,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 305 flow [2023-08-27 09:27:58,466 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 09:27:58,467 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 130 flow [2023-08-27 09:27:58,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, 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 09:27:58,468 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-08-27 09:27:58,468 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 130 flow [2023-08-27 09:27:58,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:27:58,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:27:58,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 09:27:58,469 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 09:27:58,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:27:58,470 INFO L85 PathProgramCache]: Analyzing trace with hash -484659858, now seen corresponding path program 1 times [2023-08-27 09:27:58,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:27:58,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797817695] [2023-08-27 09:27:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:27:58,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:27:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:27:58,526 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 09:27:58,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:27:58,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797817695] [2023-08-27 09:27:58,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797817695] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:27:58,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:27:58,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:27:58,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126812079] [2023-08-27 09:27:58,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:27:58,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:27:58,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:27:58,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:27:58,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:27:58,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 09:27:58,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:27:58,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 09:27:58,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:27:58,926 INFO L124 PetriNetUnfolderBase]: 2514/4177 cut-off events. [2023-08-27 09:27:58,926 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-08-27 09:27:58,931 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 188. Compared 23103 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 09:27:58,948 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 78 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-27 09:27:58,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 386 flow [2023-08-27 09:27:58,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:27:58,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:27:58,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-08-27 09:27:58,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307621671258035 [2023-08-27 09:27:58,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-08-27 09:27:58,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-08-27 09:27:58,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:27:58,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-08-27 09:27:58,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,955 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 130 flow. Second operand 3 states and 578 transitions. [2023-08-27 09:27:58,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 81 transitions, 386 flow [2023-08-27 09:27:58,956 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 09:27:58,957 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 144 flow [2023-08-27 09:27:58,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, 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 09:27:58,958 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2023-08-27 09:27:58,959 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 144 flow [2023-08-27 09:27:58,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:58,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:27:58,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:27:58,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 09:27:58,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:27:58,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:27:58,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2143603364, now seen corresponding path program 1 times [2023-08-27 09:27:58,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:27:58,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491210040] [2023-08-27 09:27:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:27:58,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:27:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:27:59,013 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 09:27:59,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:27:59,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491210040] [2023-08-27 09:27:59,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491210040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:27:59,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:27:59,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:27:59,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769851080] [2023-08-27 09:27:59,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:27:59,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:27:59,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:27:59,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:27:59,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:27:59,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 09:27:59,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:59,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:27:59,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 09:27:59,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:27:59,353 INFO L124 PetriNetUnfolderBase]: 2712/4425 cut-off events. [2023-08-27 09:27:59,353 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2023-08-27 09:27:59,359 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 24176 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 09:27:59,378 INFO L140 encePairwiseOnDemand]: 360/363 looper letters, 67 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-08-27 09:27:59,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 368 flow [2023-08-27 09:27:59,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:27:59,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:27:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 565 transitions. [2023-08-27 09:27:59,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188246097337006 [2023-08-27 09:27:59,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 565 transitions. [2023-08-27 09:27:59,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 565 transitions. [2023-08-27 09:27:59,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:27:59,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 565 transitions. [2023-08-27 09:27:59,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:59,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:59,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:59,385 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 144 flow. Second operand 3 states and 565 transitions. [2023-08-27 09:27:59,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 368 flow [2023-08-27 09:27:59,387 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 09:27:59,388 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 162 flow [2023-08-27 09:27:59,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, 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 09:27:59,389 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2023-08-27 09:27:59,389 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 162 flow [2023-08-27 09:27:59,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:59,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:27:59,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:27:59,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 09:27:59,390 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 09:27:59,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:27:59,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2027196577, now seen corresponding path program 1 times [2023-08-27 09:27:59,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:27:59,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244149781] [2023-08-27 09:27:59,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:27:59,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:27:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:27:59,433 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 09:27:59,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:27:59,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244149781] [2023-08-27 09:27:59,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244149781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:27:59,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:27:59,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:27:59,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251938363] [2023-08-27 09:27:59,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:27:59,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:27:59,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:27:59,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:27:59,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:27:59,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 09:27:59,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:59,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:27:59,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 09:27:59,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:27:59,796 INFO L124 PetriNetUnfolderBase]: 2802/4545 cut-off events. [2023-08-27 09:27:59,796 INFO L125 PetriNetUnfolderBase]: For 1137/1137 co-relation queries the response was YES. [2023-08-27 09:27:59,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11222 conditions, 4545 events. 2802/4545 cut-off events. For 1137/1137 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 26411 event pairs, 1301 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 09:27:59,819 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 76 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-27 09:27:59,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 79 transitions, 413 flow [2023-08-27 09:27:59,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:27:59,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:27:59,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2023-08-27 09:27:59,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527089072543618 [2023-08-27 09:27:59,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2023-08-27 09:27:59,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2023-08-27 09:27:59,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:27:59,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2023-08-27 09:27:59,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:59,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:59,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:59,826 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 162 flow. Second operand 3 states and 574 transitions. [2023-08-27 09:27:59,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 79 transitions, 413 flow [2023-08-27 09:27:59,831 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 09:27:59,832 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 174 flow [2023-08-27 09:27:59,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, 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 09:27:59,832 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2023-08-27 09:27:59,833 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 174 flow [2023-08-27 09:27:59,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:59,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:27:59,833 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:27:59,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 09:27:59,834 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 09:27:59,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:27:59,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2070746543, now seen corresponding path program 1 times [2023-08-27 09:27:59,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:27:59,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072239816] [2023-08-27 09:27:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:27:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:27:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:27:59,875 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 09:27:59,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:27:59,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072239816] [2023-08-27 09:27:59,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072239816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:27:59,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:27:59,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:27:59,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715724933] [2023-08-27 09:27:59,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:27:59,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:27:59,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:27:59,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:27:59,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:27:59,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 09:27:59,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:27:59,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:27:59,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 09:27:59,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:00,214 INFO L124 PetriNetUnfolderBase]: 2519/4206 cut-off events. [2023-08-27 09:28:00,214 INFO L125 PetriNetUnfolderBase]: For 1383/1383 co-relation queries the response was YES. [2023-08-27 09:28:00,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10525 conditions, 4206 events. 2519/4206 cut-off events. For 1383/1383 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 23691 event pairs, 343 based on Foata normal form. 0/3694 useless extension candidates. Maximal degree in co-relation 9998. Up to 3400 conditions per place. [2023-08-27 09:28:00,231 INFO L140 encePairwiseOnDemand]: 359/363 looper letters, 67 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-08-27 09:28:00,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 403 flow [2023-08-27 09:28:00,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:28:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:28:00,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-08-27 09:28:00,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160697887970616 [2023-08-27 09:28:00,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-08-27 09:28:00,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-08-27 09:28:00,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:00,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-08-27 09:28:00,235 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 09:28:00,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:00,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:00,238 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 174 flow. Second operand 3 states and 562 transitions. [2023-08-27 09:28:00,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 403 flow [2023-08-27 09:28:00,240 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 09:28:00,241 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 184 flow [2023-08-27 09:28:00,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, 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 09:28:00,241 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2023-08-27 09:28:00,242 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 184 flow [2023-08-27 09:28:00,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:00,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:00,242 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:28:00,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 09:28:00,242 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 09:28:00,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:00,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2070746578, now seen corresponding path program 1 times [2023-08-27 09:28:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:00,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961396420] [2023-08-27 09:28:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:00,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:00,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:00,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961396420] [2023-08-27 09:28:00,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961396420] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:28:00,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846078236] [2023-08-27 09:28:00,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:00,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:28:00,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:28:00,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:28:00,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 09:28:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:00,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 09:28:00,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:28:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:00,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:28:00,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846078236] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:00,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:28:00,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 09:28:00,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220113574] [2023-08-27 09:28:00,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:00,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:28:00,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:00,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:28:00,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:28:00,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 09:28:00,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:00,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:00,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 09:28:00,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:00,817 INFO L124 PetriNetUnfolderBase]: 2397/4000 cut-off events. [2023-08-27 09:28:00,818 INFO L125 PetriNetUnfolderBase]: For 2139/2139 co-relation queries the response was YES. [2023-08-27 09:28:00,824 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 22271 event pairs, 85 based on Foata normal form. 84/3666 useless extension candidates. Maximal degree in co-relation 9946. Up to 2264 conditions per place. [2023-08-27 09:28:00,838 INFO L140 encePairwiseOnDemand]: 360/363 looper letters, 103 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-27 09:28:00,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 106 transitions, 598 flow [2023-08-27 09:28:00,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:28:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:28:00,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 760 transitions. [2023-08-27 09:28:00,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234159779614325 [2023-08-27 09:28:00,841 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 760 transitions. [2023-08-27 09:28:00,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 760 transitions. [2023-08-27 09:28:00,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:00,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 760 transitions. [2023-08-27 09:28:00,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:00,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:00,846 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:00,846 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 184 flow. Second operand 4 states and 760 transitions. [2023-08-27 09:28:00,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 106 transitions, 598 flow [2023-08-27 09:28:00,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 106 transitions, 594 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:28:00,850 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 180 flow [2023-08-27 09:28:00,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-27 09:28:00,851 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2023-08-27 09:28:00,851 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 180 flow [2023-08-27 09:28:00,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:00,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:00,852 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:28:00,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 09:28:01,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:28:01,061 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:01,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash 678744456, now seen corresponding path program 1 times [2023-08-27 09:28:01,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:01,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162110498] [2023-08-27 09:28:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:01,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:01,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:01,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162110498] [2023-08-27 09:28:01,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162110498] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:28:01,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597028136] [2023-08-27 09:28:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:01,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:28:01,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:28:01,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:28:01,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 09:28:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:01,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 09:28:01,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:28:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:01,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:28:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:01,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597028136] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:28:01,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:28:01,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-27 09:28:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403575550] [2023-08-27 09:28:01,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:28:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 09:28:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:01,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 09:28:01,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-27 09:28:01,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 363 [2023-08-27 09:28:01,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 180 flow. Second operand has 10 states, 10 states have (on average 160.6) internal successors, (1606), 10 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:01,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:01,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 363 [2023-08-27 09:28:01,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:02,338 INFO L124 PetriNetUnfolderBase]: 4759/7812 cut-off events. [2023-08-27 09:28:02,338 INFO L125 PetriNetUnfolderBase]: For 4014/4014 co-relation queries the response was YES. [2023-08-27 09:28:02,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20596 conditions, 7812 events. 4759/7812 cut-off events. For 4014/4014 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 45107 event pairs, 788 based on Foata normal form. 112/7186 useless extension candidates. Maximal degree in co-relation 19960. Up to 2453 conditions per place. [2023-08-27 09:28:02,376 INFO L140 encePairwiseOnDemand]: 353/363 looper letters, 264 selfloop transitions, 42 changer transitions 0/307 dead transitions. [2023-08-27 09:28:02,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 307 transitions, 1716 flow [2023-08-27 09:28:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 09:28:02,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 09:28:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2802 transitions. [2023-08-27 09:28:02,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824380165289256 [2023-08-27 09:28:02,383 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2802 transitions. [2023-08-27 09:28:02,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2802 transitions. [2023-08-27 09:28:02,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:02,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2802 transitions. [2023-08-27 09:28:02,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 175.125) internal successors, (2802), 16 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:02,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 363.0) internal successors, (6171), 17 states have internal predecessors, (6171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:02,401 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 363.0) internal successors, (6171), 17 states have internal predecessors, (6171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:02,401 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 180 flow. Second operand 16 states and 2802 transitions. [2023-08-27 09:28:02,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 307 transitions, 1716 flow [2023-08-27 09:28:02,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 307 transitions, 1691 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:28:02,414 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 499 flow [2023-08-27 09:28:02,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, 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 09:28:02,416 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2023-08-27 09:28:02,416 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 499 flow [2023-08-27 09:28:02,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.6) internal successors, (1606), 10 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:02,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:02,417 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:28:02,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 09:28:02,623 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,SelfDestructingSolverStorable7 [2023-08-27 09:28:02,623 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 09:28:02,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:02,624 INFO L85 PathProgramCache]: Analyzing trace with hash -562762515, now seen corresponding path program 1 times [2023-08-27 09:28:02,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:02,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114323343] [2023-08-27 09:28:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:02,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:02,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:02,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114323343] [2023-08-27 09:28:02,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114323343] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:28:02,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234165104] [2023-08-27 09:28:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:02,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:28:02,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:28:02,731 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:28:02,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 09:28:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:02,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 09:28:02,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:28:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:02,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:28:02,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234165104] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:02,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:28:02,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-27 09:28:02,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128112267] [2023-08-27 09:28:02,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:02,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:28:02,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:02,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:28:02,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:28:02,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 363 [2023-08-27 09:28:02,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:02,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:02,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 363 [2023-08-27 09:28:02,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:03,699 INFO L124 PetriNetUnfolderBase]: 5024/8411 cut-off events. [2023-08-27 09:28:03,699 INFO L125 PetriNetUnfolderBase]: For 10049/10049 co-relation queries the response was YES. [2023-08-27 09:28:03,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24372 conditions, 8411 events. 5024/8411 cut-off events. For 10049/10049 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 48998 event pairs, 1147 based on Foata normal form. 458/8211 useless extension candidates. Maximal degree in co-relation 23722. Up to 4521 conditions per place. [2023-08-27 09:28:03,744 INFO L140 encePairwiseOnDemand]: 353/363 looper letters, 162 selfloop transitions, 43 changer transitions 0/206 dead transitions. [2023-08-27 09:28:03,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 206 transitions, 1422 flow [2023-08-27 09:28:03,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 09:28:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 09:28:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1253 transitions. [2023-08-27 09:28:03,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931129476584022 [2023-08-27 09:28:03,747 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1253 transitions. [2023-08-27 09:28:03,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1253 transitions. [2023-08-27 09:28:03,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:03,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1253 transitions. [2023-08-27 09:28:03,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:03,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:03,754 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:03,754 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 499 flow. Second operand 7 states and 1253 transitions. [2023-08-27 09:28:03,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 206 transitions, 1422 flow [2023-08-27 09:28:03,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 206 transitions, 1386 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-08-27 09:28:03,790 INFO L231 Difference]: Finished difference. Result has 82 places, 101 transitions, 786 flow [2023-08-27 09:28:03,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=786, PETRI_PLACES=82, PETRI_TRANSITIONS=101} [2023-08-27 09:28:03,791 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2023-08-27 09:28:03,791 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 101 transitions, 786 flow [2023-08-27 09:28:03,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:03,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:03,791 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 09:28:03,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 09:28:03,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:28:03,997 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:03,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:03,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2000047134, now seen corresponding path program 1 times [2023-08-27 09:28:03,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:03,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573990872] [2023-08-27 09:28:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:03,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:04,044 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 09:28:04,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:04,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573990872] [2023-08-27 09:28:04,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573990872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:04,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:04,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:28:04,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990283256] [2023-08-27 09:28:04,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:04,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:28:04,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:04,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:28:04,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:28:04,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 09:28:04,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 101 transitions, 786 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:04,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:04,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 09:28:04,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:04,635 INFO L124 PetriNetUnfolderBase]: 4719/7888 cut-off events. [2023-08-27 09:28:04,635 INFO L125 PetriNetUnfolderBase]: For 15077/15077 co-relation queries the response was YES. [2023-08-27 09:28:04,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24988 conditions, 7888 events. 4719/7888 cut-off events. For 15077/15077 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 45771 event pairs, 1579 based on Foata normal form. 0/7448 useless extension candidates. Maximal degree in co-relation 20820. Up to 6236 conditions per place. [2023-08-27 09:28:04,682 INFO L140 encePairwiseOnDemand]: 359/363 looper letters, 123 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2023-08-27 09:28:04,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 128 transitions, 1210 flow [2023-08-27 09:28:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:28:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:28:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2023-08-27 09:28:04,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142332415059688 [2023-08-27 09:28:04,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2023-08-27 09:28:04,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2023-08-27 09:28:04,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:04,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2023-08-27 09:28:04,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:04,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:04,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:04,688 INFO L175 Difference]: Start difference. First operand has 82 places, 101 transitions, 786 flow. Second operand 3 states and 560 transitions. [2023-08-27 09:28:04,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 128 transitions, 1210 flow [2023-08-27 09:28:04,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 128 transitions, 1210 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:28:04,742 INFO L231 Difference]: Finished difference. Result has 84 places, 101 transitions, 798 flow [2023-08-27 09:28:04,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=798, PETRI_PLACES=84, PETRI_TRANSITIONS=101} [2023-08-27 09:28:04,743 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 40 predicate places. [2023-08-27 09:28:04,743 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 101 transitions, 798 flow [2023-08-27 09:28:04,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:04,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:04,743 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 09:28:04,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 09:28:04,743 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:04,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2000047135, now seen corresponding path program 1 times [2023-08-27 09:28:04,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:04,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062693464] [2023-08-27 09:28:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:04,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:04,793 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 09:28:04,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:04,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062693464] [2023-08-27 09:28:04,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062693464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:04,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:04,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:28:04,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139096801] [2023-08-27 09:28:04,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:04,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:28:04,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:04,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:28:04,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:28:04,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 09:28:04,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 101 transitions, 798 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:04,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:04,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 09:28:04,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:05,322 INFO L124 PetriNetUnfolderBase]: 4426/7391 cut-off events. [2023-08-27 09:28:05,322 INFO L125 PetriNetUnfolderBase]: For 16157/16157 co-relation queries the response was YES. [2023-08-27 09:28:05,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24239 conditions, 7391 events. 4426/7391 cut-off events. For 16157/16157 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 42513 event pairs, 1711 based on Foata normal form. 202/7371 useless extension candidates. Maximal degree in co-relation 23696. Up to 7283 conditions per place. [2023-08-27 09:28:05,368 INFO L140 encePairwiseOnDemand]: 361/363 looper letters, 108 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-08-27 09:28:05,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 110 transitions, 1053 flow [2023-08-27 09:28:05,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:28:05,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:28:05,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-08-27 09:28:05,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022956841138659 [2023-08-27 09:28:05,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-08-27 09:28:05,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-08-27 09:28:05,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:05,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-08-27 09:28:05,371 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 09:28:05,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:05,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:05,373 INFO L175 Difference]: Start difference. First operand has 84 places, 101 transitions, 798 flow. Second operand 3 states and 547 transitions. [2023-08-27 09:28:05,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 110 transitions, 1053 flow [2023-08-27 09:28:05,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 110 transitions, 1049 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:28:05,427 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 792 flow [2023-08-27 09:28:05,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=792, PETRI_PLACES=84, PETRI_TRANSITIONS=100} [2023-08-27 09:28:05,428 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 40 predicate places. [2023-08-27 09:28:05,428 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 792 flow [2023-08-27 09:28:05,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:05,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:05,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:28:05,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 09:28:05,429 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:05,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash 34764367, now seen corresponding path program 1 times [2023-08-27 09:28:05,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:05,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821490805] [2023-08-27 09:28:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:05,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:05,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821490805] [2023-08-27 09:28:05,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821490805] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:05,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:05,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:28:05,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381747153] [2023-08-27 09:28:05,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:05,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:28:05,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:05,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:28:05,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:28:05,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 363 [2023-08-27 09:28:05,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 792 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:05,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:05,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 363 [2023-08-27 09:28:05,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:05,766 INFO L124 PetriNetUnfolderBase]: 1276/2313 cut-off events. [2023-08-27 09:28:05,767 INFO L125 PetriNetUnfolderBase]: For 3653/3653 co-relation queries the response was YES. [2023-08-27 09:28:05,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7438 conditions, 2313 events. 1276/2313 cut-off events. For 3653/3653 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11716 event pairs, 203 based on Foata normal form. 260/2555 useless extension candidates. Maximal degree in co-relation 7296. Up to 1865 conditions per place. [2023-08-27 09:28:05,779 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 63 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2023-08-27 09:28:05,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 601 flow [2023-08-27 09:28:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:28:05,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:28:05,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-08-27 09:28:05,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921946740128558 [2023-08-27 09:28:05,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-08-27 09:28:05,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-08-27 09:28:05,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:05,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-08-27 09:28:05,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:05,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:05,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:05,785 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 792 flow. Second operand 3 states and 536 transitions. [2023-08-27 09:28:05,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 601 flow [2023-08-27 09:28:05,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 549 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-08-27 09:28:05,802 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 376 flow [2023-08-27 09:28:05,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-08-27 09:28:05,803 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-08-27 09:28:05,803 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 376 flow [2023-08-27 09:28:05,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:05,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:05,804 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 09:28:05,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 09:28:05,804 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:05,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1755833712, now seen corresponding path program 1 times [2023-08-27 09:28:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:05,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829095109] [2023-08-27 09:28:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:05,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:06,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:06,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829095109] [2023-08-27 09:28:06,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829095109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:06,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:06,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-27 09:28:06,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744549490] [2023-08-27 09:28:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:06,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 09:28:06,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:06,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 09:28:06,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-08-27 09:28:06,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 363 [2023-08-27 09:28:06,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 376 flow. Second operand has 15 states, 15 states have (on average 114.46666666666667) internal successors, (1717), 15 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:06,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:06,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 363 [2023-08-27 09:28:06,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:08,423 INFO L124 PetriNetUnfolderBase]: 1829/3347 cut-off events. [2023-08-27 09:28:08,423 INFO L125 PetriNetUnfolderBase]: For 3927/3927 co-relation queries the response was YES. [2023-08-27 09:28:08,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10441 conditions, 3347 events. 1829/3347 cut-off events. For 3927/3927 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 18379 event pairs, 420 based on Foata normal form. 74/3421 useless extension candidates. Maximal degree in co-relation 10241. Up to 1986 conditions per place. [2023-08-27 09:28:08,442 INFO L140 encePairwiseOnDemand]: 341/363 looper letters, 199 selfloop transitions, 39 changer transitions 0/239 dead transitions. [2023-08-27 09:28:08,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 239 transitions, 1606 flow [2023-08-27 09:28:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 09:28:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 09:28:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2806 transitions. [2023-08-27 09:28:08,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2023-08-27 09:28:08,451 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2806 transitions. [2023-08-27 09:28:08,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2806 transitions. [2023-08-27 09:28:08,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:08,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2806 transitions. [2023-08-27 09:28:08,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 122.0) internal successors, (2806), 23 states have internal predecessors, (2806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:08,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 363.0) internal successors, (8712), 24 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:08,481 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 363.0) internal successors, (8712), 24 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:08,481 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 376 flow. Second operand 23 states and 2806 transitions. [2023-08-27 09:28:08,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 239 transitions, 1606 flow [2023-08-27 09:28:08,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 239 transitions, 1581 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:28:08,493 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 741 flow [2023-08-27 09:28:08,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=741, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2023-08-27 09:28:08,494 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2023-08-27 09:28:08,494 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 741 flow [2023-08-27 09:28:08,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 114.46666666666667) internal successors, (1717), 15 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:08,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:08,495 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 09:28:08,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 09:28:08,495 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:08,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:08,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1690453436, now seen corresponding path program 2 times [2023-08-27 09:28:08,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:08,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264001643] [2023-08-27 09:28:08,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:08,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:09,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:09,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264001643] [2023-08-27 09:28:09,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264001643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:09,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:09,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-27 09:28:09,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018437402] [2023-08-27 09:28:09,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:09,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 09:28:09,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:09,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 09:28:09,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-08-27 09:28:09,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 363 [2023-08-27 09:28:09,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 741 flow. Second operand has 16 states, 16 states have (on average 110.375) internal successors, (1766), 16 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:09,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:09,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 363 [2023-08-27 09:28:09,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:10,584 INFO L124 PetriNetUnfolderBase]: 2521/4605 cut-off events. [2023-08-27 09:28:10,584 INFO L125 PetriNetUnfolderBase]: For 7909/7909 co-relation queries the response was YES. [2023-08-27 09:28:10,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16441 conditions, 4605 events. 2521/4605 cut-off events. For 7909/7909 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25598 event pairs, 806 based on Foata normal form. 20/4589 useless extension candidates. Maximal degree in co-relation 16223. Up to 2815 conditions per place. [2023-08-27 09:28:10,615 INFO L140 encePairwiseOnDemand]: 343/363 looper letters, 195 selfloop transitions, 38 changer transitions 0/234 dead transitions. [2023-08-27 09:28:10,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 234 transitions, 1944 flow [2023-08-27 09:28:10,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 09:28:10,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 09:28:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1792 transitions. [2023-08-27 09:28:10,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32910927456382 [2023-08-27 09:28:10,624 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1792 transitions. [2023-08-27 09:28:10,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1792 transitions. [2023-08-27 09:28:10,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:10,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1792 transitions. [2023-08-27 09:28:10,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 119.46666666666667) internal successors, (1792), 15 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:10,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 363.0) internal successors, (5808), 16 states have internal predecessors, (5808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:10,638 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 363.0) internal successors, (5808), 16 states have internal predecessors, (5808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:10,638 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 741 flow. Second operand 15 states and 1792 transitions. [2023-08-27 09:28:10,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 234 transitions, 1944 flow [2023-08-27 09:28:10,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 234 transitions, 1918 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-08-27 09:28:10,676 INFO L231 Difference]: Finished difference. Result has 135 places, 128 transitions, 1164 flow [2023-08-27 09:28:10,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1164, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2023-08-27 09:28:10,676 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 91 predicate places. [2023-08-27 09:28:10,677 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 1164 flow [2023-08-27 09:28:10,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 110.375) internal successors, (1766), 16 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:10,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:10,677 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 09:28:10,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 09:28:10,678 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:10,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:10,678 INFO L85 PathProgramCache]: Analyzing trace with hash 571502484, now seen corresponding path program 3 times [2023-08-27 09:28:10,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:10,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460823598] [2023-08-27 09:28:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:10,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:28:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:28:11,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:28:11,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460823598] [2023-08-27 09:28:11,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460823598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:28:11,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:28:11,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-27 09:28:11,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036373063] [2023-08-27 09:28:11,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:28:11,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 09:28:11,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:28:11,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 09:28:11,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-08-27 09:28:11,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 363 [2023-08-27 09:28:11,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 1164 flow. Second operand has 16 states, 16 states have (on average 110.375) internal successors, (1766), 16 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:11,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:28:11,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 363 [2023-08-27 09:28:11,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:28:12,902 INFO L124 PetriNetUnfolderBase]: 2851/5192 cut-off events. [2023-08-27 09:28:12,902 INFO L125 PetriNetUnfolderBase]: For 11570/11570 co-relation queries the response was YES. [2023-08-27 09:28:12,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19813 conditions, 5192 events. 2851/5192 cut-off events. For 11570/11570 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 29183 event pairs, 763 based on Foata normal form. 20/5170 useless extension candidates. Maximal degree in co-relation 19581. Up to 2700 conditions per place. [2023-08-27 09:28:12,927 INFO L140 encePairwiseOnDemand]: 344/363 looper letters, 194 selfloop transitions, 51 changer transitions 0/246 dead transitions. [2023-08-27 09:28:12,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 246 transitions, 2290 flow [2023-08-27 09:28:12,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 09:28:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 09:28:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1792 transitions. [2023-08-27 09:28:12,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32910927456382 [2023-08-27 09:28:12,933 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1792 transitions. [2023-08-27 09:28:12,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1792 transitions. [2023-08-27 09:28:12,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:28:12,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1792 transitions. [2023-08-27 09:28:12,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 119.46666666666667) internal successors, (1792), 15 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:12,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 363.0) internal successors, (5808), 16 states have internal predecessors, (5808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:12,944 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 363.0) internal successors, (5808), 16 states have internal predecessors, (5808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:12,944 INFO L175 Difference]: Start difference. First operand has 135 places, 128 transitions, 1164 flow. Second operand 15 states and 1792 transitions. [2023-08-27 09:28:12,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 246 transitions, 2290 flow [2023-08-27 09:28:12,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 246 transitions, 2256 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-08-27 09:28:12,997 INFO L231 Difference]: Finished difference. Result has 157 places, 142 transitions, 1471 flow [2023-08-27 09:28:12,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1471, PETRI_PLACES=157, PETRI_TRANSITIONS=142} [2023-08-27 09:28:12,998 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 113 predicate places. [2023-08-27 09:28:12,998 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 142 transitions, 1471 flow [2023-08-27 09:28:12,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 110.375) internal successors, (1766), 16 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:28:12,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:28:12,998 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 09:28:12,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 09:28:12,999 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 09:28:12,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:28:12,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1206480249, now seen corresponding path program 1 times [2023-08-27 09:28:12,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:28:12,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266873252] [2023-08-27 09:28:12,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:28:12,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:28:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:28:13,021 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 09:28:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:28:13,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 09:28:13,065 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 09:28:13,066 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONASSERT (21 of 22 remaining) [2023-08-27 09:28:13,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 22 remaining) [2023-08-27 09:28:13,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 22 remaining) [2023-08-27 09:28:13,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONASSERT (18 of 22 remaining) [2023-08-27 09:28:13,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-27 09:28:13,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-27 09:28:13,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-27 09:28:13,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-27 09:28:13,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-27 09:28:13,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-27 09:28:13,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-27 09:28:13,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-27 09:28:13,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONASSERT (9 of 22 remaining) [2023-08-27 09:28:13,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONASSERT (8 of 22 remaining) [2023-08-27 09:28:13,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-27 09:28:13,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-27 09:28:13,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-27 09:28:13,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-27 09:28:13,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-27 09:28:13,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-27 09:28:13,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-27 09:28:13,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-27 09:28:13,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 09:28:13,070 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:28:13,075 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:28:13,075 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:28:13,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:28:13 BasicIcfg [2023-08-27 09:28:13,139 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:28:13,140 INFO L158 Benchmark]: Toolchain (without parser) took 21402.99ms. Allocated memory was 358.6MB in the beginning and 983.6MB in the end (delta: 625.0MB). Free memory was 333.2MB in the beginning and 809.7MB in the end (delta: -476.5MB). Peak memory consumption was 149.3MB. Max. memory is 16.0GB. [2023-08-27 09:28:13,141 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 335.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:28:13,141 INFO L158 Benchmark]: CACSL2BoogieTranslator took 594.31ms. Allocated memory is still 358.6MB. Free memory was 332.9MB in the beginning and 303.6MB in the end (delta: 29.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-27 09:28:13,141 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.44ms. Allocated memory is still 358.6MB. Free memory was 303.6MB in the beginning and 300.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:28:13,141 INFO L158 Benchmark]: Boogie Preprocessor took 25.79ms. Allocated memory is still 358.6MB. Free memory was 300.7MB in the beginning and 298.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:28:13,141 INFO L158 Benchmark]: RCFGBuilder took 533.48ms. Allocated memory is still 358.6MB. Free memory was 298.7MB in the beginning and 280.2MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 09:28:13,142 INFO L158 Benchmark]: TraceAbstraction took 20189.51ms. Allocated memory was 358.6MB in the beginning and 983.6MB in the end (delta: 625.0MB). Free memory was 279.5MB in the beginning and 809.7MB in the end (delta: -530.2MB). Peak memory consumption was 96.8MB. Max. memory is 16.0GB. [2023-08-27 09:28:13,143 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 335.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 594.31ms. Allocated memory is still 358.6MB. Free memory was 332.9MB in the beginning and 303.6MB in the end (delta: 29.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.44ms. Allocated memory is still 358.6MB. Free memory was 303.6MB in the beginning and 300.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.79ms. Allocated memory is still 358.6MB. Free memory was 300.7MB in the beginning and 298.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 533.48ms. Allocated memory is still 358.6MB. Free memory was 298.7MB in the beginning and 280.2MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 20189.51ms. Allocated memory was 358.6MB in the beginning and 983.6MB in the end (delta: 625.0MB). Free memory was 279.5MB in the beginning and 809.7MB in the end (delta: -530.2MB). Peak memory consumption was 96.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 753]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [753] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 170 PlacesBefore, 44 PlacesAfterwards, 175 TransitionsBefore, 42 TransitionsAfterwards, 10550 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 118 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 7 ChoiceCompositions, 177 TotalNumberOfCompositions, 14512 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10587, independent: 10371, independent conditional: 0, independent unconditional: 10371, dependent: 216, dependent conditional: 0, dependent unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6195, independent: 6146, independent conditional: 0, independent unconditional: 6146, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10587, independent: 4225, independent conditional: 0, independent unconditional: 4225, dependent: 167, dependent conditional: 0, dependent unconditional: 167, unknown: 6195, unknown conditional: 0, unknown unconditional: 6195] , Statistics on independence cache: Total cache size (in pairs): 233, Positive cache size: 210, Positive conditional cache size: 0, Positive unconditional cache size: 210, 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[(5)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1021] 0 pthread_t id1, id2; [L1023] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1={9:0}, id2={6:0}, m={4:0}, pthread_create(&id1, ((void *)0), t1, ((void *)0))=13, top=0] [L990] 1 int i; [L991] 1 unsigned int tmp; [L992] 1 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L1024] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1={9:0}, id2={6:0}, m={4:0}, pthread_create(&id2, ((void *)0), t2, ((void *)0))=14, top=0] [L1006] 2 int i; [L1007] 2 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L992] COND TRUE 1 i<(5) [L995] 1 tmp = __VERIFIER_nondet_uint() [L996] CALL 1 assume_abort_if_not(tmp < (5)) [L23] COND FALSE 1 !(!cond) [L996] RET 1 assume_abort_if_not(tmp < (5)) [L997] CALL, EXPR 1 push(arr,tmp) [L962] COND FALSE 1 !(top==(5)) [L969] CALL, EXPR 1 get_top() [L954] 1 return top; [L969] RET, EXPR 1 get_top() [L969] 1 stack[get_top()] = x VAL [\old(x)=4, arr={3:0}, flag=0, get_top()=0, m={4:0}, stack={3:0}, stack={3:0}, top=0, x=4] [L970] CALL 1 inc_top() [L946] 1 top++ [L970] RET 1 inc_top() [L972] 1 return 0; [L997] RET, EXPR 1 push(arr,tmp) [L997] COND FALSE 1 !(push(arr,tmp)==(-1)) [L999] 1 flag=(1) VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=4, top=1] [L992] 1 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, tmp=4, top=1] [L1007] COND TRUE 2 i<(5) [L1010] COND TRUE 2 \read(flag) [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; VAL [\result=0, \result=1, arr={3:0}, flag=1, m={4:0}, top=1] [L976] RET, EXPR 2 get_top() [L976] COND FALSE 2 !(get_top()==0) [L983] CALL 2 dec_top() [L950] 2 top-- VAL [arr={3:0}, flag=1, m={4:0}, top=0] [L983] RET 2 dec_top() [L984] CALL, EXPR 2 get_top() [L954] 2 return top; [L984] RET, EXPR 2 get_top() [L984] EXPR 2 stack[get_top()] [L984] 2 return stack[get_top()]; [L1012] RET, EXPR 2 pop(arr) [L1012] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1007] 2 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1007] COND TRUE 2 i<(5) [L1010] COND TRUE 2 \read(flag) [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; [L976] RET, EXPR 2 get_top() [L976] COND TRUE 2 get_top()==0 [L979] 2 return (-2); [L1012] RET, EXPR 2 pop(arr) [L1012] COND TRUE 2 !(pop(arr)!=(-2)) [L1013] CALL 2 error() [L941] CALL 2 reach_error() [L20] COND FALSE 2 !(0) [L20] 2 __assert_fail ("0", "stack-2.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\read(__PRETTY_FUNCTION__)={49:50}, arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1024]: 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: 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: 20]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 946]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 992]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 946]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 992]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 950]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 950]: 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, 298 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: 19.9s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1056 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1056 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5836 IncrementalHoareTripleChecker+Invalid, 5905 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 0 mSDtfsCounter, 5836 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1471occurred in iteration=15, InterpolantAutomatonStates: 107, 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, 3.2s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 264 ConstructedInterpolants, 0 QuantifiedInterpolants, 1777 SizeOfPredicates, 2 NumberOfNonLiveVariables, 572 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 19 InterpolantComputations, 14 PerfectInterpolantSequences, 32/47 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 09:28:13,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...