/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:04:27,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:04:27,436 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-SemanticLbe.epf [2023-11-17 15:04:27,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:04:27,477 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:04:27,478 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:04:27,479 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:04:27,479 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:04:27,479 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:04:27,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:04:27,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:04:27,484 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:04:27,484 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:04:27,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:04:27,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:04:27,486 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:04:27,486 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:04:27,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:04:27,486 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:04:27,486 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:04:27,486 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:04:27,487 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:04:27,487 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:04:27,488 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:04:27,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:04:27,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:04:27,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:04:27,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:04:27,490 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:04:27,490 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:04:27,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:04:27,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:04:27,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:04:27,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:04:27,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:04:27,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:04:27,765 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:04:27,765 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:04:27,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2023-11-17 15:04:29,000 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:04:29,255 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:04:29,256 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2023-11-17 15:04:29,268 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9472f99d/8519f81dfb144118923095c7633f1cb4/FLAGa8e59fe2d [2023-11-17 15:04:29,284 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9472f99d/8519f81dfb144118923095c7633f1cb4 [2023-11-17 15:04:29,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:04:29,288 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:04:29,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:04:29,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:04:29,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:04:29,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:04:29" (1/1) ... [2023-11-17 15:04:29,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a5772e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29, skipping insertion in model container [2023-11-17 15:04:29,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:04:29" (1/1) ... [2023-11-17 15:04:29,349 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:04:29,495 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-17 15:04:29,640 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-atomic/peterson.i[30997,31010] [2023-11-17 15:04:29,650 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-atomic/peterson.i[31682,31695] [2023-11-17 15:04:29,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:04:29,667 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:04:29,689 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-17 15:04:29,713 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-atomic/peterson.i[30997,31010] [2023-11-17 15:04:29,716 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-atomic/peterson.i[31682,31695] [2023-11-17 15:04:29,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:04:29,758 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:04:29,759 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:04:29,759 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:04:29,766 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:04:29,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29 WrapperNode [2023-11-17 15:04:29,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:04:29,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:04:29,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:04:29,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:04:29,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29" (1/1) ... [2023-11-17 15:04:29,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29" (1/1) ... [2023-11-17 15:04:29,822 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-11-17 15:04:29,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:04:29,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:04:29,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:04:29,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:04:29,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29" (1/1) ... [2023-11-17 15:04:29,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29" (1/1) ... [2023-11-17 15:04:29,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29" (1/1) ... [2023-11-17 15:04:29,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29" (1/1) ... [2023-11-17 15:04:29,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29" (1/1) ... [2023-11-17 15:04:29,857 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29" (1/1) ... [2023-11-17 15:04:29,858 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29" (1/1) ... [2023-11-17 15:04:29,859 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29" (1/1) ... [2023-11-17 15:04:29,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:04:29,862 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:04:29,862 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:04:29,862 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:04:29,863 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29" (1/1) ... [2023-11-17 15:04:29,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:04:29,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:04:29,899 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) [2023-11-17 15:04:29,925 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 [2023-11-17 15:04:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:04:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-17 15:04:29,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-17 15:04:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-17 15:04:29,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-17 15:04:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:04:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:04:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:04:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:04:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:04:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:04:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:04:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:04:29,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:04:29,942 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:04:30,086 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:04:30,088 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:04:30,266 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:04:30,279 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:04:30,279 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 15:04:30,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:04:30 BoogieIcfgContainer [2023-11-17 15:04:30,281 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:04:30,283 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:04:30,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:04:30,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:04:30,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:04:29" (1/3) ... [2023-11-17 15:04:30,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215e0dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:04:30, skipping insertion in model container [2023-11-17 15:04:30,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:29" (2/3) ... [2023-11-17 15:04:30,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215e0dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:04:30, skipping insertion in model container [2023-11-17 15:04:30,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:04:30" (3/3) ... [2023-11-17 15:04:30,289 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson.i [2023-11-17 15:04:30,304 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:04:30,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 15:04:30,304 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:04:30,362 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:04:30,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 170 flow [2023-11-17 15:04:30,421 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-11-17 15:04:30,422 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:04:30,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 6/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-17 15:04:30,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 78 transitions, 170 flow [2023-11-17 15:04:30,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 66 transitions, 141 flow [2023-11-17 15:04:30,434 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:04:30,445 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 66 transitions, 141 flow [2023-11-17 15:04:30,448 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 66 transitions, 141 flow [2023-11-17 15:04:30,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 141 flow [2023-11-17 15:04:30,464 INFO L124 PetriNetUnfolderBase]: 6/66 cut-off events. [2023-11-17 15:04:30,464 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 15:04:30,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 66 events. 6/66 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-17 15:04:30,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-11-17 15:04:32,058 INFO L134 LiptonReduction]: Checked pairs total: 3106 [2023-11-17 15:04:32,058 INFO L136 LiptonReduction]: Total number of compositions: 47 [2023-11-17 15:04:32,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:04:32,078 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=LoopHeads, 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;@15fb4559, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:04:32,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 15:04:32,082 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:04:32,082 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2023-11-17 15:04:32,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:04:32,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:32,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:32,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:04:32,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash -265894165, now seen corresponding path program 1 times [2023-11-17 15:04:32,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:32,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275132113] [2023-11-17 15:04:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:32,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:32,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:32,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275132113] [2023-11-17 15:04:32,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275132113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:32,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:32,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:04:32,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631011476] [2023-11-17 15:04:32,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:32,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:04:32,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:32,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:04:32,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:04:32,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 125 [2023-11-17 15:04:32,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:32,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:32,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 125 [2023-11-17 15:04:32,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:32,433 INFO L124 PetriNetUnfolderBase]: 155/342 cut-off events. [2023-11-17 15:04:32,434 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-17 15:04:32,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 342 events. 155/342 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1698 event pairs, 67 based on Foata normal form. 16/291 useless extension candidates. Maximal degree in co-relation 568. Up to 166 conditions per place. [2023-11-17 15:04:32,441 INFO L140 encePairwiseOnDemand]: 118/125 looper letters, 23 selfloop transitions, 5 changer transitions 1/37 dead transitions. [2023-11-17 15:04:32,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 37 transitions, 144 flow [2023-11-17 15:04:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:04:32,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:04:32,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2023-11-17 15:04:32,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2023-11-17 15:04:32,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2023-11-17 15:04:32,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2023-11-17 15:04:32,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:32,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2023-11-17 15:04:32,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:32,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:32,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:32,475 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 65 flow. Second operand 3 states and 220 transitions. [2023-11-17 15:04:32,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 37 transitions, 144 flow [2023-11-17 15:04:32,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 137 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:04:32,480 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 88 flow [2023-11-17 15:04:32,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2023-11-17 15:04:32,485 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-11-17 15:04:32,486 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 88 flow [2023-11-17 15:04:32,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:32,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:32,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:32,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:04:32,487 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:04:32,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:32,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1559711875, now seen corresponding path program 1 times [2023-11-17 15:04:32,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:32,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467882627] [2023-11-17 15:04:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:32,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:32,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:32,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467882627] [2023-11-17 15:04:32,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467882627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:32,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:32,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:04:32,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224748099] [2023-11-17 15:04:32,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:32,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:04:32,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:32,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:04:32,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:04:32,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 125 [2023-11-17 15:04:32,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:32,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:32,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 125 [2023-11-17 15:04:32,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:32,645 INFO L124 PetriNetUnfolderBase]: 134/305 cut-off events. [2023-11-17 15:04:32,645 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-17 15:04:32,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 305 events. 134/305 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1480 event pairs, 69 based on Foata normal form. 16/279 useless extension candidates. Maximal degree in co-relation 287. Up to 163 conditions per place. [2023-11-17 15:04:32,648 INFO L140 encePairwiseOnDemand]: 120/125 looper letters, 20 selfloop transitions, 4 changer transitions 4/36 dead transitions. [2023-11-17 15:04:32,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 159 flow [2023-11-17 15:04:32,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:04:32,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:04:32,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-11-17 15:04:32,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813333333333334 [2023-11-17 15:04:32,650 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-11-17 15:04:32,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-11-17 15:04:32,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:32,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-11-17 15:04:32,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:32,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:32,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:32,653 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 88 flow. Second operand 3 states and 218 transitions. [2023-11-17 15:04:32,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 159 flow [2023-11-17 15:04:32,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 149 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:04:32,655 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 92 flow [2023-11-17 15:04:32,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-11-17 15:04:32,656 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-11-17 15:04:32,656 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 92 flow [2023-11-17 15:04:32,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:32,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:32,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:32,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:04:32,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:04:32,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:32,658 INFO L85 PathProgramCache]: Analyzing trace with hash 984471121, now seen corresponding path program 1 times [2023-11-17 15:04:32,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:32,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423870880] [2023-11-17 15:04:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:32,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:32,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:32,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423870880] [2023-11-17 15:04:32,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423870880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:32,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:32,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 15:04:32,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199044757] [2023-11-17 15:04:32,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:32,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:04:32,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:32,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:04:32,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:04:32,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 125 [2023-11-17 15:04:32,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:32,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:32,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 125 [2023-11-17 15:04:32,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:33,087 INFO L124 PetriNetUnfolderBase]: 400/729 cut-off events. [2023-11-17 15:04:33,087 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2023-11-17 15:04:33,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1633 conditions, 729 events. 400/729 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3396 event pairs, 55 based on Foata normal form. 30/709 useless extension candidates. Maximal degree in co-relation 1394. Up to 333 conditions per place. [2023-11-17 15:04:33,091 INFO L140 encePairwiseOnDemand]: 115/125 looper letters, 46 selfloop transitions, 10 changer transitions 37/94 dead transitions. [2023-11-17 15:04:33,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 94 transitions, 441 flow [2023-11-17 15:04:33,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:04:33,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:04:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 659 transitions. [2023-11-17 15:04:33,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272 [2023-11-17 15:04:33,095 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 659 transitions. [2023-11-17 15:04:33,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 659 transitions. [2023-11-17 15:04:33,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:33,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 659 transitions. [2023-11-17 15:04:33,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.9) internal successors, (659), 10 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:33,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:33,101 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:33,101 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 92 flow. Second operand 10 states and 659 transitions. [2023-11-17 15:04:33,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 94 transitions, 441 flow [2023-11-17 15:04:33,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 94 transitions, 435 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:04:33,104 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 178 flow [2023-11-17 15:04:33,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-11-17 15:04:33,105 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2023-11-17 15:04:33,106 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 178 flow [2023-11-17 15:04:33,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:33,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:33,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:04:33,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:04:33,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:04:33,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:33,107 INFO L85 PathProgramCache]: Analyzing trace with hash -119768367, now seen corresponding path program 2 times [2023-11-17 15:04:33,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:33,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91327680] [2023-11-17 15:04:33,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:33,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:04:33,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:33,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91327680] [2023-11-17 15:04:33,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91327680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:33,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:33,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 15:04:33,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737239052] [2023-11-17 15:04:33,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:33,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:04:33,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:33,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:04:33,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:04:33,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 125 [2023-11-17 15:04:33,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:33,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:33,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 125 [2023-11-17 15:04:33,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:33,373 INFO L124 PetriNetUnfolderBase]: 287/510 cut-off events. [2023-11-17 15:04:33,374 INFO L125 PetriNetUnfolderBase]: For 600/602 co-relation queries the response was YES. [2023-11-17 15:04:33,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 510 events. 287/510 cut-off events. For 600/602 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2075 event pairs, 33 based on Foata normal form. 26/520 useless extension candidates. Maximal degree in co-relation 1160. Up to 178 conditions per place. [2023-11-17 15:04:33,377 INFO L140 encePairwiseOnDemand]: 115/125 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2023-11-17 15:04:33,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 89 transitions, 627 flow [2023-11-17 15:04:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:04:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:04:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 581 transitions. [2023-11-17 15:04:33,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164444444444445 [2023-11-17 15:04:33,379 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 581 transitions. [2023-11-17 15:04:33,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 581 transitions. [2023-11-17 15:04:33,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:33,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 581 transitions. [2023-11-17 15:04:33,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.55555555555556) internal successors, (581), 9 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:33,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 125.0) internal successors, (1250), 10 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:33,384 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 125.0) internal successors, (1250), 10 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:33,384 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 178 flow. Second operand 9 states and 581 transitions. [2023-11-17 15:04:33,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 89 transitions, 627 flow [2023-11-17 15:04:33,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 89 transitions, 533 flow, removed 35 selfloop flow, removed 6 redundant places. [2023-11-17 15:04:33,394 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-11-17 15:04:33,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-11-17 15:04:33,396 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2023-11-17 15:04:33,396 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-11-17 15:04:33,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:04:33,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-17 15:04:33,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-17 15:04:33,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-17 15:04:33,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-17 15:04:33,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-17 15:04:33,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-17 15:04:33,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:04:33,405 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-17 15:04:33,410 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:04:33,410 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:04:33,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:04:33 BasicIcfg [2023-11-17 15:04:33,414 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:04:33,414 INFO L158 Benchmark]: Toolchain (without parser) took 4126.65ms. Allocated memory is still 207.6MB. Free memory was 157.4MB in the beginning and 85.1MB in the end (delta: 72.3MB). Peak memory consumption was 72.6MB. Max. memory is 8.0GB. [2023-11-17 15:04:33,415 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 173.0MB. Free memory is still 128.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:04:33,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 477.76ms. Allocated memory is still 207.6MB. Free memory was 157.1MB in the beginning and 137.0MB in the end (delta: 20.1MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:04:33,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.92ms. Allocated memory is still 207.6MB. Free memory was 137.0MB in the beginning and 135.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:04:33,416 INFO L158 Benchmark]: Boogie Preprocessor took 37.35ms. Allocated memory is still 207.6MB. Free memory was 135.0MB in the beginning and 133.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:04:33,416 INFO L158 Benchmark]: RCFGBuilder took 419.40ms. Allocated memory is still 207.6MB. Free memory was 133.6MB in the beginning and 174.7MB in the end (delta: -41.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 15:04:33,417 INFO L158 Benchmark]: TraceAbstraction took 3130.91ms. Allocated memory is still 207.6MB. Free memory was 174.5MB in the beginning and 85.1MB in the end (delta: 89.4MB). Peak memory consumption was 90.4MB. Max. memory is 8.0GB. [2023-11-17 15:04:33,419 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 173.0MB. Free memory is still 128.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 477.76ms. Allocated memory is still 207.6MB. Free memory was 157.1MB in the beginning and 137.0MB in the end (delta: 20.1MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.92ms. Allocated memory is still 207.6MB. Free memory was 137.0MB in the beginning and 135.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.35ms. Allocated memory is still 207.6MB. Free memory was 135.0MB in the beginning and 133.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 419.40ms. Allocated memory is still 207.6MB. Free memory was 133.6MB in the beginning and 174.7MB in the end (delta: -41.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3130.91ms. Allocated memory is still 207.6MB. Free memory was 174.5MB in the beginning and 85.1MB in the end (delta: 89.4MB). Peak memory consumption was 90.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 67 PlacesBefore, 32 PlacesAfterwards, 66 TransitionsBefore, 28 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 47 TotalNumberOfCompositions, 3106 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1658, independent: 1515, independent conditional: 0, independent unconditional: 1515, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 829, independent: 791, independent conditional: 0, independent unconditional: 791, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 829, independent: 780, independent conditional: 0, independent unconditional: 780, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 49, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 84, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1658, independent: 724, independent conditional: 0, independent unconditional: 724, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 829, unknown conditional: 0, unknown unconditional: 829] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 150, Positive conditional cache size: 0, Positive unconditional cache size: 150, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 753]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 725]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 6 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: 3.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 516 IncrementalHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 28 mSDtfsCounter, 516 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=3, InterpolantAutomatonStates: 25, 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:04:33,439 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...