/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 -i ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:19:34,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:19:34,464 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 [2023-08-24 11:19:34,469 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:19:34,470 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:19:34,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:19:34,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:19:34,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:19:34,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:19:34,511 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:19:34,512 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:19:34,512 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:19:34,512 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:19:34,513 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:19:34,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:19:34,514 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:19:34,514 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:19:34,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:19:34,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:19:34,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:19:34,515 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:19:34,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:19:34,516 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:19:34,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:19:34,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:19:34,517 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:19:34,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:19:34,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:19:34,518 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:19:34,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:19:34,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:19:34,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:19:34,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:19:34,520 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:19:34,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:19:34,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:19:34,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:19:34,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:19:34,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:19:34,877 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:19:34,877 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:19:34,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-08-24 11:19:36,057 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:19:36,381 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:19:36,381 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-08-24 11:19:36,403 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30f636d4e/3a91f7911d674480af0cdb34c72f4adc/FLAGf3f503c5d [2023-08-24 11:19:36,420 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30f636d4e/3a91f7911d674480af0cdb34c72f4adc [2023-08-24 11:19:36,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:19:36,427 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:19:36,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:19:36,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:19:36,432 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:19:36,433 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:19:36" (1/1) ... [2023-08-24 11:19:36,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5173cd67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36, skipping insertion in model container [2023-08-24 11:19:36,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:19:36" (1/1) ... [2023-08-24 11:19:36,479 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:19:36,818 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2023-08-24 11:19:36,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:19:36,841 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:19:36,873 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-24 11:19:36,875 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-24 11:19:36,897 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2023-08-24 11:19:36,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:19:36,947 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:19:36,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36 WrapperNode [2023-08-24 11:19:36,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:19:36,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:19:36,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:19:36,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:19:36,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36" (1/1) ... [2023-08-24 11:19:36,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36" (1/1) ... [2023-08-24 11:19:37,017 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 188 [2023-08-24 11:19:37,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:19:37,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:19:37,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:19:37,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:19:37,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36" (1/1) ... [2023-08-24 11:19:37,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36" (1/1) ... [2023-08-24 11:19:37,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36" (1/1) ... [2023-08-24 11:19:37,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36" (1/1) ... [2023-08-24 11:19:37,057 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36" (1/1) ... [2023-08-24 11:19:37,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36" (1/1) ... [2023-08-24 11:19:37,062 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36" (1/1) ... [2023-08-24 11:19:37,063 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36" (1/1) ... [2023-08-24 11:19:37,065 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:19:37,066 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:19:37,066 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:19:37,066 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:19:37,067 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36" (1/1) ... [2023-08-24 11:19:37,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:19:37,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:19:37,099 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) [2023-08-24 11:19:37,122 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 [2023-08-24 11:19:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 11:19:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-24 11:19:37,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-24 11:19:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:19:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:19:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:19:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:19:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:19:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:19:37,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:19:37,143 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 11:19:37,306 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:19:37,307 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:19:37,632 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:19:37,781 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:19:37,781 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 11:19:37,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:19:37 BoogieIcfgContainer [2023-08-24 11:19:37,783 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:19:37,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:19:37,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:19:37,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:19:37,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:19:36" (1/3) ... [2023-08-24 11:19:37,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b84826e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:19:37, skipping insertion in model container [2023-08-24 11:19:37,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:19:36" (2/3) ... [2023-08-24 11:19:37,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b84826e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:19:37, skipping insertion in model container [2023-08-24 11:19:37,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:19:37" (3/3) ... [2023-08-24 11:19:37,790 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-1.i [2023-08-24 11:19:37,804 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:19:37,805 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 11:19:37,805 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:19:37,857 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:19:37,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 114 transitions, 233 flow [2023-08-24 11:19:37,927 INFO L124 PetriNetUnfolderBase]: 11/124 cut-off events. [2023-08-24 11:19:37,927 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:19:37,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 124 events. 11/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-24 11:19:37,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 114 transitions, 233 flow [2023-08-24 11:19:37,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 114 transitions, 233 flow [2023-08-24 11:19:37,938 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:19:37,946 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 114 transitions, 233 flow [2023-08-24 11:19:37,948 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 114 transitions, 233 flow [2023-08-24 11:19:37,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 114 transitions, 233 flow [2023-08-24 11:19:37,971 INFO L124 PetriNetUnfolderBase]: 11/124 cut-off events. [2023-08-24 11:19:37,972 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:19:37,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 124 events. 11/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-24 11:19:37,974 INFO L119 LiptonReduction]: Number of co-enabled transitions 2028 [2023-08-24 11:19:42,045 INFO L134 LiptonReduction]: Checked pairs total: 2167 [2023-08-24 11:19:42,045 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-08-24 11:19:42,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:19:42,061 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;@589aafdb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:19:42,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 11:19:42,067 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:19:42,067 INFO L124 PetriNetUnfolderBase]: 5/24 cut-off events. [2023-08-24 11:19:42,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:19:42,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:19:42,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:19:42,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 11:19:42,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:19:42,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1286972708, now seen corresponding path program 1 times [2023-08-24 11:19:42,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:19:42,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123853540] [2023-08-24 11:19:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:19:42,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:19:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:19:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:19:42,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:19:42,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123853540] [2023-08-24 11:19:42,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123853540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:19:42,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:19:42,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:19:42,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481694046] [2023-08-24 11:19:42,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:19:42,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:19:42,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:19:42,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:19:42,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:19:42,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 218 [2023-08-24 11:19:42,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 28 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:19:42,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 218 [2023-08-24 11:19:42,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:19:42,478 INFO L124 PetriNetUnfolderBase]: 42/93 cut-off events. [2023-08-24 11:19:42,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:19:42,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 93 events. 42/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 2 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 178. Up to 83 conditions per place. [2023-08-24 11:19:42,480 INFO L140 encePairwiseOnDemand]: 212/218 looper letters, 22 selfloop transitions, 2 changer transitions 1/26 dead transitions. [2023-08-24 11:19:42,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 26 transitions, 107 flow [2023-08-24 11:19:42,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:19:42,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:19:42,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-08-24 11:19:42,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481651376146789 [2023-08-24 11:19:42,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-08-24 11:19:42,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-08-24 11:19:42,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:19:42,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-08-24 11:19:42,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,506 INFO L175 Difference]: Start difference. First operand has 24 places, 28 transitions, 61 flow. Second operand 3 states and 315 transitions. [2023-08-24 11:19:42,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 26 transitions, 107 flow [2023-08-24 11:19:42,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 11:19:42,509 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 55 flow [2023-08-24 11:19:42,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2023-08-24 11:19:42,513 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2023-08-24 11:19:42,513 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 55 flow [2023-08-24 11:19:42,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:19:42,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:19:42,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:19:42,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 11:19:42,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:19:42,515 INFO L85 PathProgramCache]: Analyzing trace with hash -342307077, now seen corresponding path program 1 times [2023-08-24 11:19:42,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:19:42,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247398842] [2023-08-24 11:19:42,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:19:42,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:19:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:19:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:19:42,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:19:42,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247398842] [2023-08-24 11:19:42,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247398842] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:19:42,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:19:42,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:19:42,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075646951] [2023-08-24 11:19:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:19:42,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:19:42,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:19:42,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:19:42,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:19:42,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 218 [2023-08-24 11:19:42,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:19:42,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 218 [2023-08-24 11:19:42,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:19:42,709 INFO L124 PetriNetUnfolderBase]: 50/113 cut-off events. [2023-08-24 11:19:42,710 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:19:42,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 113 events. 50/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 257 event pairs, 14 based on Foata normal form. 3/101 useless extension candidates. Maximal degree in co-relation 221. Up to 73 conditions per place. [2023-08-24 11:19:42,711 INFO L140 encePairwiseOnDemand]: 215/218 looper letters, 26 selfloop transitions, 2 changer transitions 1/30 dead transitions. [2023-08-24 11:19:42,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 30 transitions, 127 flow [2023-08-24 11:19:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:19:42,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:19:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-08-24 11:19:42,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47706422018348627 [2023-08-24 11:19:42,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-08-24 11:19:42,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-08-24 11:19:42,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:19:42,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-08-24 11:19:42,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,718 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 55 flow. Second operand 3 states and 312 transitions. [2023-08-24 11:19:42,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 30 transitions, 127 flow [2023-08-24 11:19:42,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 30 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:19:42,719 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 63 flow [2023-08-24 11:19:42,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2023-08-24 11:19:42,720 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2023-08-24 11:19:42,720 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 63 flow [2023-08-24 11:19:42,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:19:42,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:19:42,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:19:42,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 11:19:42,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:19:42,721 INFO L85 PathProgramCache]: Analyzing trace with hash -339227072, now seen corresponding path program 1 times [2023-08-24 11:19:42,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:19:42,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720790770] [2023-08-24 11:19:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:19:42,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:19:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:19:42,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:19:42,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:19:42,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720790770] [2023-08-24 11:19:42,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720790770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:19:42,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:19:42,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:19:42,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427249662] [2023-08-24 11:19:42,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:19:42,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:19:42,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:19:42,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:19:42,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:19:42,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 218 [2023-08-24 11:19:42,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:19:42,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 218 [2023-08-24 11:19:42,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:19:42,935 INFO L124 PetriNetUnfolderBase]: 71/161 cut-off events. [2023-08-24 11:19:42,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:19:42,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 161 events. 71/161 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 325 event pairs, 12 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 326. Up to 73 conditions per place. [2023-08-24 11:19:42,938 INFO L140 encePairwiseOnDemand]: 212/218 looper letters, 39 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2023-08-24 11:19:42,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 46 transitions, 197 flow [2023-08-24 11:19:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 11:19:42,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 11:19:42,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 556 transitions. [2023-08-24 11:19:42,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42507645259938837 [2023-08-24 11:19:42,942 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 556 transitions. [2023-08-24 11:19:42,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 556 transitions. [2023-08-24 11:19:42,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:19:42,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 556 transitions. [2023-08-24 11:19:42,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 218.0) internal successors, (1526), 7 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,947 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 218.0) internal successors, (1526), 7 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,948 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 63 flow. Second operand 6 states and 556 transitions. [2023-08-24 11:19:42,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 46 transitions, 197 flow [2023-08-24 11:19:42,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:19:42,949 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 91 flow [2023-08-24 11:19:42,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-24 11:19:42,950 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 8 predicate places. [2023-08-24 11:19:42,950 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 91 flow [2023-08-24 11:19:42,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:19:42,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:19:42,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:19:42,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:19:42,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 11:19:42,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:19:42,952 INFO L85 PathProgramCache]: Analyzing trace with hash 85896053, now seen corresponding path program 1 times [2023-08-24 11:19:42,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:19:42,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97743786] [2023-08-24 11:19:42,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:19:42,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:19:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 11:19:43,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 11:19:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 11:19:43,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 11:19:43,046 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 11:19:43,047 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-24 11:19:43,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-24 11:19:43,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:19:43,049 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-24 11:19:43,051 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN (1/2) [2023-08-24 11:19:43,054 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:19:43,054 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:19:43,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:19:43 BasicIcfg [2023-08-24 11:19:43,093 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:19:43,093 INFO L158 Benchmark]: Toolchain (without parser) took 6666.75ms. Allocated memory was 337.6MB in the beginning and 453.0MB in the end (delta: 115.3MB). Free memory was 313.1MB in the beginning and 340.7MB in the end (delta: -27.6MB). Peak memory consumption was 86.0MB. Max. memory is 16.0GB. [2023-08-24 11:19:43,094 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 337.6MB. Free memory was 315.6MB in the beginning and 315.4MB in the end (delta: 192.0kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:19:43,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 519.63ms. Allocated memory is still 337.6MB. Free memory was 312.7MB in the beginning and 292.1MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 11:19:43,094 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.82ms. Allocated memory is still 337.6MB. Free memory was 292.1MB in the beginning and 289.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:19:43,095 INFO L158 Benchmark]: Boogie Preprocessor took 47.51ms. Allocated memory is still 337.6MB. Free memory was 289.7MB in the beginning and 287.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:19:43,095 INFO L158 Benchmark]: RCFGBuilder took 717.36ms. Allocated memory is still 337.6MB. Free memory was 287.6MB in the beginning and 306.4MB in the end (delta: -18.9MB). Peak memory consumption was 36.4MB. Max. memory is 16.0GB. [2023-08-24 11:19:43,096 INFO L158 Benchmark]: TraceAbstraction took 5307.98ms. Allocated memory was 337.6MB in the beginning and 453.0MB in the end (delta: 115.3MB). Free memory was 305.4MB in the beginning and 340.7MB in the end (delta: -35.3MB). Peak memory consumption was 79.0MB. Max. memory is 16.0GB. [2023-08-24 11:19:43,098 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 337.6MB. Free memory was 315.6MB in the beginning and 315.4MB in the end (delta: 192.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 519.63ms. Allocated memory is still 337.6MB. Free memory was 312.7MB in the beginning and 292.1MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 67.82ms. Allocated memory is still 337.6MB. Free memory was 292.1MB in the beginning and 289.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.51ms. Allocated memory is still 337.6MB. Free memory was 289.7MB in the beginning and 287.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 717.36ms. Allocated memory is still 337.6MB. Free memory was 287.6MB in the beginning and 306.4MB in the end (delta: -18.9MB). Peak memory consumption was 36.4MB. Max. memory is 16.0GB. * TraceAbstraction took 5307.98ms. Allocated memory was 337.6MB in the beginning and 453.0MB in the end (delta: 115.3MB). Free memory was 305.4MB in the beginning and 340.7MB in the end (delta: -35.3MB). Peak memory consumption was 79.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 254]: Unsoundness Warning unspecified type, defaulting to int C: short [254] - GenericResultAtLocation [Line: 254]: Unsoundness Warning unspecified type, defaulting to int C: short [254] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 107 PlacesBefore, 24 PlacesAfterwards, 114 TransitionsBefore, 28 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 104 TotalNumberOfCompositions, 2167 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1862, independent: 1748, independent conditional: 0, independent unconditional: 1748, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1107, independent: 1072, independent conditional: 0, independent unconditional: 1072, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1862, independent: 676, independent conditional: 0, independent unconditional: 676, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 1107, unknown conditional: 0, unknown unconditional: 1107] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 759]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L714] 0 int memory[(2*320+1)]; [L715] 0 int next_alloc_idx = 1; [L716] 0 int m = 0; [L717] 0 int top; [L769] 0 int m2 = 0; [L770] 0 int state = 0; [L788] 0 pthread_t t; VAL [m2={5:0}, m={3:0}, next_alloc_idx=1, state=0, t={8:0}, top={4:0}] [L789] COND TRUE 0 1 [L789] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m2={5:0}, m={3:0}, next_alloc_idx=1, pthread_create(&t, 0, thr1, 0)=-2, state=0, t={8:0}, top={4:0}] [L773] CALL 1 __VERIFIER_atomic_acquire(&m2) [L691] EXPR 1 \read(*m) [L691] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L691] RET 1 assume_abort_if_not(*m==0) [L692] 1 *m = 1 [L773] RET 1 __VERIFIER_atomic_acquire(&m2) [L776] 1 case 0: [L777] CALL 1 EBStack_init() [L732] 1 top = 0 [L777] RET 1 EBStack_init() [L778] 1 state = 1 [L779] 1 case 1: [L780] CALL 1 __VERIFIER_atomic_release(&m2) [L696] EXPR 1 \read(*m) [L696] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L696] RET 1 assume_abort_if_not(*m==1) [L697] 1 *m = 0 [L780] RET 1 __VERIFIER_atomic_release(&m2) [L781] CALL 1 push_loop() [L762] 1 int r = -1; [L763] 1 int arg = __VERIFIER_nondet_int(); [L764] COND TRUE 1 1 [L765] CALL, EXPR 1 push(arg) [L741] 1 int oldTop = -1, newTop = -1, casret = -1; [L742] CALL, EXPR 1 index_malloc() [L719] 1 int curr_alloc_idx = -1; VAL [curr_alloc_idx=-1, m2={5:0}, m={3:0}, next_alloc_idx=1, state=1, top={4:0}] [L720] CALL 1 __VERIFIER_atomic_acquire(&m) [L691] EXPR 1 \read(*m) [L691] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L691] RET 1 assume_abort_if_not(*m==0) [L692] 1 *m = 1 [L720] RET 1 __VERIFIER_atomic_acquire(&m) [L721] COND FALSE 1 !(next_alloc_idx+2-1 > (2*320+1)) [L725] 1 curr_alloc_idx = next_alloc_idx VAL [curr_alloc_idx=1, m2={5:0}, m={3:0}, next_alloc_idx=1, state=1, top={4:0}] [L726] 1 next_alloc_idx += 2 [L727] CALL 1 __VERIFIER_atomic_release(&m) [L696] EXPR 1 \read(*m) [L696] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L696] RET 1 assume_abort_if_not(*m==1) [L697] 1 *m = 0 [L727] RET 1 __VERIFIER_atomic_release(&m) [L729] 1 return curr_alloc_idx; [L742] RET, EXPR 1 index_malloc() [L742] 1 newTop = index_malloc() [L743] COND FALSE 1 !(newTop == 0) [L746] 1 memory[newTop+0] = d VAL [\old(d)=0, casret={6:0}, d=0, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={4:0}] [L747] COND TRUE 1 1 [L748] EXPR 1 \read(top) [L748] 1 oldTop = top [L749] 1 memory[newTop+1] = oldTop [L750] CALL 1 __VERIFIER_atomic_CAS(&top,oldTop,newTop,&casret) [L705] EXPR 1 \read(*v) [L705] COND TRUE 1 *v == e [L707] 1 *v = u [L707] 1 *r = 1 [L750] RET 1 __VERIFIER_atomic_CAS(&top,oldTop,newTop,&casret) [L751] EXPR 1 \read(casret) [L751] COND TRUE 1 casret==1 VAL [\old(d)=0, \read(casret)=1, casret={6:0}, d=0, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L752] 1 return 1; [L741] 1 int oldTop = -1, newTop = -1, casret = -1; [L752] 1 return 1; [L765] RET, EXPR 1 push(arg) [L765] 1 r = push(arg) VAL [arg=0, m2={5:0}, m={3:0}, next_alloc_idx=3, push(arg)=1, r=1, state=1, top={4:0}] [L766] CALL 1 __VERIFIER_atomic_assert(r) [L759] EXPR 1 !r || !isEmpty() [L759] CALL, EXPR 1 isEmpty() [L735] EXPR 1 \read(top) [L735] COND FALSE 1 !(top == 0) [L738] 1 return 0; [L759] RET, EXPR 1 isEmpty() [L759] EXPR 1 !r || !isEmpty() [L759] COND TRUE 1 !(!(!r || !isEmpty())) [L759] 1 reach_error() VAL [\old(r)=1, m2={5:0}, m={3:0}, next_alloc_idx=3, r=1, state=1, top={4:0}] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 175 locations, 3 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: 5.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 176 IncrementalHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 176 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=3, InterpolantAutomatonStates: 12, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 76 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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! [2023-08-24 11:19:43,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...