/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-collitem-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 00:57:59,899 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 00:57:59,985 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 00:57:59,989 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 00:57:59,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 00:58:00,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 00:58:00,023 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 00:58:00,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 00:58:00,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 00:58:00,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 00:58:00,033 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 00:58:00,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 00:58:00,033 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 00:58:00,034 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 00:58:00,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 00:58:00,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 00:58:00,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 00:58:00,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 00:58:00,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 00:58:00,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 00:58:00,036 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 00:58:00,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 00:58:00,037 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 00:58:00,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 00:58:00,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 00:58:00,038 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 00:58:00,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 00:58:00,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:58:00,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 00:58:00,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 00:58:00,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 00:58:00,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 00:58:00,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 00:58:00,040 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 00:58:00,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 00:58:00,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 00:58:00,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 00:58:00,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 00:58:00,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 00:58:00,379 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 00:58:00,379 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 00:58:00,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-symm.wvr.c [2023-08-24 00:58:01,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 00:58:01,740 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 00:58:01,740 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-symm.wvr.c [2023-08-24 00:58:01,749 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24a00f46d/a57b40481ed44d21b4650f882054b35a/FLAGa9fdcca1c [2023-08-24 00:58:01,759 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24a00f46d/a57b40481ed44d21b4650f882054b35a [2023-08-24 00:58:01,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 00:58:01,762 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 00:58:01,763 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 00:58:01,763 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 00:58:01,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 00:58:01,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:58:01" (1/1) ... [2023-08-24 00:58:01,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2258b596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01, skipping insertion in model container [2023-08-24 00:58:01,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:58:01" (1/1) ... [2023-08-24 00:58:01,786 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 00:58:01,913 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-symm.wvr.c[2986,2999] [2023-08-24 00:58:01,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:58:01,924 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 00:58:01,943 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-symm.wvr.c[2986,2999] [2023-08-24 00:58:01,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:58:01,951 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 00:58:01,951 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 00:58:01,957 INFO L206 MainTranslator]: Completed translation [2023-08-24 00:58:01,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01 WrapperNode [2023-08-24 00:58:01,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 00:58:01,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 00:58:01,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 00:58:01,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 00:58:01,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01" (1/1) ... [2023-08-24 00:58:01,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01" (1/1) ... [2023-08-24 00:58:01,994 INFO L138 Inliner]: procedures = 22, calls = 35, calls flagged for inlining = 15, calls inlined = 29, statements flattened = 262 [2023-08-24 00:58:01,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 00:58:01,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 00:58:01,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 00:58:01,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 00:58:02,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01" (1/1) ... [2023-08-24 00:58:02,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01" (1/1) ... [2023-08-24 00:58:02,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01" (1/1) ... [2023-08-24 00:58:02,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01" (1/1) ... [2023-08-24 00:58:02,030 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01" (1/1) ... [2023-08-24 00:58:02,033 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01" (1/1) ... [2023-08-24 00:58:02,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01" (1/1) ... [2023-08-24 00:58:02,036 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01" (1/1) ... [2023-08-24 00:58:02,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 00:58:02,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 00:58:02,039 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 00:58:02,039 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 00:58:02,040 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01" (1/1) ... [2023-08-24 00:58:02,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:58:02,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:58:02,085 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 00:58:02,094 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 00:58:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 00:58:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 00:58:02,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 00:58:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 00:58:02,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 00:58:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 00:58:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 00:58:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 00:58:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 00:58:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 00:58:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 00:58:02,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 00:58:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 00:58:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 00:58:02,119 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 00:58:02,204 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 00:58:02,206 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 00:58:02,682 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 00:58:03,113 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 00:58:03,113 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 00:58:03,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:58:03 BoogieIcfgContainer [2023-08-24 00:58:03,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 00:58:03,117 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 00:58:03,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 00:58:03,119 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 00:58:03,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 12:58:01" (1/3) ... [2023-08-24 00:58:03,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec453da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:58:03, skipping insertion in model container [2023-08-24 00:58:03,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:58:01" (2/3) ... [2023-08-24 00:58:03,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec453da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:58:03, skipping insertion in model container [2023-08-24 00:58:03,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:58:03" (3/3) ... [2023-08-24 00:58:03,122 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-symm.wvr.c [2023-08-24 00:58:03,137 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 00:58:03,137 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 00:58:03,137 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 00:58:03,207 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 00:58:03,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 115 transitions, 246 flow [2023-08-24 00:58:03,304 INFO L124 PetriNetUnfolderBase]: 3/113 cut-off events. [2023-08-24 00:58:03,304 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 00:58:03,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 113 events. 3/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-08-24 00:58:03,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 115 transitions, 246 flow [2023-08-24 00:58:03,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 105 transitions, 222 flow [2023-08-24 00:58:03,314 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 00:58:03,322 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 105 transitions, 222 flow [2023-08-24 00:58:03,324 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 105 transitions, 222 flow [2023-08-24 00:58:03,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 105 transitions, 222 flow [2023-08-24 00:58:03,350 INFO L124 PetriNetUnfolderBase]: 3/105 cut-off events. [2023-08-24 00:58:03,351 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 00:58:03,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 105 events. 3/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 17 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-08-24 00:58:03,352 INFO L119 LiptonReduction]: Number of co-enabled transitions 108 [2023-08-24 00:58:09,793 INFO L134 LiptonReduction]: Checked pairs total: 190 [2023-08-24 00:58:09,794 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-24 00:58:09,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 00:58:09,811 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;@5524feb4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 00:58:09,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 00:58:09,820 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 00:58:09,820 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-24 00:58:09,820 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 00:58:09,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:58:09,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:58:09,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 00:58:09,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:58:09,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1471154367, now seen corresponding path program 1 times [2023-08-24 00:58:09,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:58:09,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578730738] [2023-08-24 00:58:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:58:09,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:58:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:58:12,104 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 00:58:12,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:58:12,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578730738] [2023-08-24 00:58:12,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578730738] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:58:12,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:58:12,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 00:58:12,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593100991] [2023-08-24 00:58:12,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:58:12,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:58:12,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:58:12,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:58:12,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 00:58:12,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 218 [2023-08-24 00:58:12,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 00:58:12,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:58:12,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 218 [2023-08-24 00:58:12,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:58:12,291 INFO L124 PetriNetUnfolderBase]: 8/32 cut-off events. [2023-08-24 00:58:12,291 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-24 00:58:12,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 32 events. 8/32 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 1 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 45. Up to 16 conditions per place. [2023-08-24 00:58:12,293 INFO L140 encePairwiseOnDemand]: 215/218 looper letters, 11 selfloop transitions, 1 changer transitions 7/19 dead transitions. [2023-08-24 00:58:12,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 97 flow [2023-08-24 00:58:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 00:58:12,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 00:58:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2023-08-24 00:58:12,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39908256880733944 [2023-08-24 00:58:12,306 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 348 transitions. [2023-08-24 00:58:12,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 348 transitions. [2023-08-24 00:58:12,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:58:12,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 348 transitions. [2023-08-24 00:58:12,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states 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 00:58:12,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states 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 00:58:12,318 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states 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 00:58:12,319 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 34 flow. Second operand 4 states and 348 transitions. [2023-08-24 00:58:12,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 97 flow [2023-08-24 00:58:12,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 19 transitions, 83 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 00:58:12,323 INFO L231 Difference]: Finished difference. Result has 19 places, 11 transitions, 33 flow [2023-08-24 00:58:12,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=33, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2023-08-24 00:58:12,327 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-08-24 00:58:12,328 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 33 flow [2023-08-24 00:58:12,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 00:58:12,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:58:12,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:58:12,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 00:58:12,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 00:58:12,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:58:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1931311065, now seen corresponding path program 2 times [2023-08-24 00:58:12,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:58:12,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539756829] [2023-08-24 00:58:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:58:12,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:58:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:58:14,239 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 00:58:14,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:58:14,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539756829] [2023-08-24 00:58:14,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539756829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:58:14,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:58:14,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 00:58:14,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101294384] [2023-08-24 00:58:14,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:58:14,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:58:14,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:58:14,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:58:14,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 00:58:14,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 218 [2023-08-24 00:58:14,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 33 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 00:58:14,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:58:14,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 218 [2023-08-24 00:58:14,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:58:14,366 INFO L124 PetriNetUnfolderBase]: 5/23 cut-off events. [2023-08-24 00:58:14,366 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-24 00:58:14,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 23 events. 5/23 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 3 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 57. Up to 15 conditions per place. [2023-08-24 00:58:14,368 INFO L140 encePairwiseOnDemand]: 215/218 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2023-08-24 00:58:14,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 15 transitions, 73 flow [2023-08-24 00:58:14,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 00:58:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 00:58:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2023-08-24 00:58:14,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3944954128440367 [2023-08-24 00:58:14,372 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 344 transitions. [2023-08-24 00:58:14,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 344 transitions. [2023-08-24 00:58:14,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:58:14,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 344 transitions. [2023-08-24 00:58:14,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 00:58:14,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states 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 00:58:14,379 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states 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 00:58:14,379 INFO L175 Difference]: Start difference. First operand has 19 places, 11 transitions, 33 flow. Second operand 4 states and 344 transitions. [2023-08-24 00:58:14,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 15 transitions, 73 flow [2023-08-24 00:58:14,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 71 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 00:58:14,380 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-24 00:58:14,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-24 00:58:14,381 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-08-24 00:58:14,381 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-24 00:58:14,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 00:58:14,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 00:58:14,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 00:58:14,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 00:58:14,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 00:58:14,384 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2023-08-24 00:58:14,387 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 00:58:14,387 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 00:58:14,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 12:58:14 BasicIcfg [2023-08-24 00:58:14,391 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 00:58:14,391 INFO L158 Benchmark]: Toolchain (without parser) took 12628.98ms. Allocated memory was 390.1MB in the beginning and 612.4MB in the end (delta: 222.3MB). Free memory was 366.3MB in the beginning and 551.9MB in the end (delta: -185.6MB). Peak memory consumption was 39.3MB. Max. memory is 16.0GB. [2023-08-24 00:58:14,392 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 390.1MB. Free memory is still 366.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 00:58:14,392 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.06ms. Allocated memory is still 390.1MB. Free memory was 366.3MB in the beginning and 354.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 00:58:14,392 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.03ms. Allocated memory is still 390.1MB. Free memory was 354.7MB in the beginning and 352.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 00:58:14,393 INFO L158 Benchmark]: Boogie Preprocessor took 43.27ms. Allocated memory is still 390.1MB. Free memory was 352.3MB in the beginning and 350.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 00:58:14,393 INFO L158 Benchmark]: RCFGBuilder took 1076.22ms. Allocated memory is still 390.1MB. Free memory was 350.2MB in the beginning and 305.2MB in the end (delta: 45.0MB). Peak memory consumption was 48.2MB. Max. memory is 16.0GB. [2023-08-24 00:58:14,394 INFO L158 Benchmark]: TraceAbstraction took 11273.81ms. Allocated memory was 390.1MB in the beginning and 612.4MB in the end (delta: 222.3MB). Free memory was 304.9MB in the beginning and 551.9MB in the end (delta: -247.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 00:58:14,396 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 390.1MB. Free memory is still 366.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 195.06ms. Allocated memory is still 390.1MB. Free memory was 366.3MB in the beginning and 354.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.03ms. Allocated memory is still 390.1MB. Free memory was 354.7MB in the beginning and 352.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 43.27ms. Allocated memory is still 390.1MB. Free memory was 352.3MB in the beginning and 350.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 1076.22ms. Allocated memory is still 390.1MB. Free memory was 350.2MB in the beginning and 305.2MB in the end (delta: 45.0MB). Peak memory consumption was 48.2MB. Max. memory is 16.0GB. * TraceAbstraction took 11273.81ms. Allocated memory was 390.1MB in the beginning and 612.4MB in the end (delta: 222.3MB). Free memory was 304.9MB in the beginning and 551.9MB in the end (delta: -247.0MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.5s, 109 PlacesBefore, 18 PlacesAfterwards, 105 TransitionsBefore, 11 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 8 FixpointIterations, 82 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 103 TotalNumberOfCompositions, 190 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 190, independent: 190, independent conditional: 0, independent unconditional: 190, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 64, independent: 64, independent conditional: 0, independent unconditional: 64, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 190, independent: 126, independent conditional: 0, independent unconditional: 126, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 64, unknown conditional: 0, unknown unconditional: 64] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 87]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 123 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: 11.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 913 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 00:58:14,420 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...