/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 --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -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 11:17:08,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:17:08,899 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 11:17:08,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:17:08,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:17:08,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:17:08,932 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:17:08,932 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:17:08,933 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:17:08,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:17:08,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:17:08,933 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:17:08,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:17:08,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:17:08,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:17:08,934 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:17:08,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:17:08,935 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:17:08,935 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:17:08,935 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:17:08,935 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:17:08,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:17:08,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:17:08,943 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:17:08,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:17:08,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:17:08,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:17:08,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:17:08,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:17:08,944 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:17:08,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:17:08,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:17:08,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:17:09,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:17:09,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:17:09,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:17:09,149 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:17:09,150 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:17:09,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2023-11-17 11:17:10,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:17:10,427 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:17:10,429 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2023-11-17 11:17:10,444 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57dc6a1b/b1dde46706cb4adbb3a4628957b674de/FLAG564eb4ecd [2023-11-17 11:17:10,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57dc6a1b/b1dde46706cb4adbb3a4628957b674de [2023-11-17 11:17:10,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:17:10,464 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:17:10,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:17:10,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:17:10,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:17:10,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:17:10" (1/1) ... [2023-11-17 11:17:10,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61a7b01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10, skipping insertion in model container [2023-11-17 11:17:10,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:17:10" (1/1) ... [2023-11-17 11:17:10,515 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:17:10,663 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-17 11:17:10,785 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 11:17:10,790 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 11:17:10,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:17:10,802 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:17:10,811 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-17 11:17:10,823 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 11:17:10,825 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 11:17:10,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:17:10,845 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:17:10,845 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:17:10,846 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:17:10,851 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:17:10,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10 WrapperNode [2023-11-17 11:17:10,854 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:17:10,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:17:10,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:17:10,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:17:10,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10" (1/1) ... [2023-11-17 11:17:10,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10" (1/1) ... [2023-11-17 11:17:10,892 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-11-17 11:17:10,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:17:10,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:17:10,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:17:10,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:17:10,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10" (1/1) ... [2023-11-17 11:17:10,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10" (1/1) ... [2023-11-17 11:17:10,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10" (1/1) ... [2023-11-17 11:17:10,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10" (1/1) ... [2023-11-17 11:17:10,917 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10" (1/1) ... [2023-11-17 11:17:10,926 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10" (1/1) ... [2023-11-17 11:17:10,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10" (1/1) ... [2023-11-17 11:17:10,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10" (1/1) ... [2023-11-17 11:17:10,930 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:17:10,931 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:17:10,931 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:17:10,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:17:10,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10" (1/1) ... [2023-11-17 11:17:10,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:17:10,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:17:10,982 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 11:17:10,998 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 11:17:11,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:17:11,004 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-17 11:17:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-17 11:17:11,004 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-17 11:17:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-17 11:17:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:17:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:17:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:17:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:17:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:17:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:17:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:17:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:17:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:17:11,006 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 11:17:11,089 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:17:11,091 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:17:11,192 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:17:11,272 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:17:11,272 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 11:17:11,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:17:11 BoogieIcfgContainer [2023-11-17 11:17:11,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:17:11,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:17:11,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:17:11,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:17:11,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:17:10" (1/3) ... [2023-11-17 11:17:11,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4420068a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:17:11, skipping insertion in model container [2023-11-17 11:17:11,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:10" (2/3) ... [2023-11-17 11:17:11,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4420068a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:17:11, skipping insertion in model container [2023-11-17 11:17:11,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:17:11" (3/3) ... [2023-11-17 11:17:11,278 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson.i [2023-11-17 11:17:11,292 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:17:11,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 11:17:11,292 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:17:11,329 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 11:17:11,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 41 transitions, 96 flow [2023-11-17 11:17:11,391 INFO L124 PetriNetUnfolderBase]: 4/39 cut-off events. [2023-11-17 11:17:11,391 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:17:11,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 39 events. 4/39 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-11-17 11:17:11,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 41 transitions, 96 flow [2023-11-17 11:17:11,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 83 flow [2023-11-17 11:17:11,401 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:17:11,414 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 37 transitions, 83 flow [2023-11-17 11:17:11,421 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 37 transitions, 83 flow [2023-11-17 11:17:11,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 83 flow [2023-11-17 11:17:11,434 INFO L124 PetriNetUnfolderBase]: 4/37 cut-off events. [2023-11-17 11:17:11,434 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:17:11,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 37 events. 4/37 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-11-17 11:17:11,435 INFO L119 LiptonReduction]: Number of co-enabled transitions 630 [2023-11-17 11:17:11,820 INFO L134 LiptonReduction]: Checked pairs total: 2428 [2023-11-17 11:17:11,820 INFO L136 LiptonReduction]: Total number of compositions: 18 [2023-11-17 11:17:11,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:17:11,843 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;@57e0be55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:17:11,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 11:17:11,849 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:17:11,849 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2023-11-17 11:17:11,849 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:17:11,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:11,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:11,851 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 11:17:11,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:11,854 INFO L85 PathProgramCache]: Analyzing trace with hash 466154508, now seen corresponding path program 1 times [2023-11-17 11:17:11,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251356601] [2023-11-17 11:17:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:11,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:12,041 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 11:17:12,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:12,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251356601] [2023-11-17 11:17:12,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251356601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:12,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:12,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:17:12,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470508874] [2023-11-17 11:17:12,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:12,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:17:12,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:12,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:17:12,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:17:12,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2023-11-17 11:17:12,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 11:17:12,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:12,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2023-11-17 11:17:12,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:12,139 INFO L124 PetriNetUnfolderBase]: 154/338 cut-off events. [2023-11-17 11:17:12,139 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-17 11:17:12,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 338 events. 154/338 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1690 event pairs, 67 based on Foata normal form. 16/287 useless extension candidates. Maximal degree in co-relation 564. Up to 166 conditions per place. [2023-11-17 11:17:12,143 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 23 selfloop transitions, 5 changer transitions 1/37 dead transitions. [2023-11-17 11:17:12,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 37 transitions, 144 flow [2023-11-17 11:17:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:17:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:17:12,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2023-11-17 11:17:12,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.559322033898305 [2023-11-17 11:17:12,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 99 transitions. [2023-11-17 11:17:12,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 99 transitions. [2023-11-17 11:17:12,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:12,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 99 transitions. [2023-11-17 11:17:12,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 11:17:12,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:17:12,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:17:12,160 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 67 flow. Second operand 3 states and 99 transitions. [2023-11-17 11:17:12,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 37 transitions, 144 flow [2023-11-17 11:17:12,162 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 11:17:12,163 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 88 flow [2023-11-17 11:17:12,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, 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 11:17:12,167 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-11-17 11:17:12,168 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 88 flow [2023-11-17 11:17:12,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 11:17:12,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:12,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:12,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:17:12,168 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 11:17:12,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:12,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1280574199, now seen corresponding path program 1 times [2023-11-17 11:17:12,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:12,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947138229] [2023-11-17 11:17:12,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:12,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:12,219 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 11:17:12,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:12,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947138229] [2023-11-17 11:17:12,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947138229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:12,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:12,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:17:12,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746175399] [2023-11-17 11:17:12,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:12,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:17:12,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:12,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:17:12,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:17:12,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2023-11-17 11:17:12,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 11:17:12,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:12,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2023-11-17 11:17:12,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:12,272 INFO L124 PetriNetUnfolderBase]: 133/301 cut-off events. [2023-11-17 11:17:12,272 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-17 11:17:12,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 301 events. 133/301 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. 16/275 useless extension candidates. Maximal degree in co-relation 283. Up to 163 conditions per place. [2023-11-17 11:17:12,275 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 20 selfloop transitions, 4 changer transitions 4/36 dead transitions. [2023-11-17 11:17:12,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 159 flow [2023-11-17 11:17:12,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:17:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:17:12,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2023-11-17 11:17:12,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536723163841808 [2023-11-17 11:17:12,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 95 transitions. [2023-11-17 11:17:12,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 95 transitions. [2023-11-17 11:17:12,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:12,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 95 transitions. [2023-11-17 11:17:12,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 11:17:12,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:17:12,280 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:17:12,280 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 88 flow. Second operand 3 states and 95 transitions. [2023-11-17 11:17:12,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 159 flow [2023-11-17 11:17:12,281 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 11:17:12,282 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 92 flow [2023-11-17 11:17:12,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, 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 11:17:12,283 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-11-17 11:17:12,283 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 92 flow [2023-11-17 11:17:12,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 11:17:12,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:12,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:12,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:17:12,284 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 11:17:12,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:12,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1216185446, now seen corresponding path program 1 times [2023-11-17 11:17:12,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:12,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494683915] [2023-11-17 11:17:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:12,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:12,395 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 11:17:12,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:12,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494683915] [2023-11-17 11:17:12,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494683915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:12,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:12,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:17:12,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999899116] [2023-11-17 11:17:12,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:12,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:17:12,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:12,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:17:12,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:17:12,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2023-11-17 11:17:12,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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 11:17:12,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:12,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2023-11-17 11:17:12,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:12,610 INFO L124 PetriNetUnfolderBase]: 400/729 cut-off events. [2023-11-17 11:17:12,610 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2023-11-17 11:17:12,611 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 3391 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 11:17:12,613 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 46 selfloop transitions, 10 changer transitions 37/94 dead transitions. [2023-11-17 11:17:12,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 94 transitions, 441 flow [2023-11-17 11:17:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 11:17:12,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 11:17:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2023-11-17 11:17:12,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42203389830508475 [2023-11-17 11:17:12,617 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 249 transitions. [2023-11-17 11:17:12,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 249 transitions. [2023-11-17 11:17:12,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:12,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 249 transitions. [2023-11-17 11:17:12,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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 11:17:12,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 59.0) internal successors, (649), 11 states have internal predecessors, (649), 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 11:17:12,622 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 59.0) internal successors, (649), 11 states have internal predecessors, (649), 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 11:17:12,622 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 92 flow. Second operand 10 states and 249 transitions. [2023-11-17 11:17:12,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 94 transitions, 441 flow [2023-11-17 11:17:12,625 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 11:17:12,626 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 178 flow [2023-11-17 11:17:12,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, 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 11:17:12,628 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2023-11-17 11:17:12,629 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 178 flow [2023-11-17 11:17:12,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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 11:17:12,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:12,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:12,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:17:12,629 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 11:17:12,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:12,630 INFO L85 PathProgramCache]: Analyzing trace with hash -133039594, now seen corresponding path program 2 times [2023-11-17 11:17:12,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:12,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513722206] [2023-11-17 11:17:12,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:12,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:12,752 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 11:17:12,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:12,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513722206] [2023-11-17 11:17:12,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513722206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:12,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:12,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:17:12,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973527498] [2023-11-17 11:17:12,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:12,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:17:12,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:12,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:17:12,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:17:12,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2023-11-17 11:17:12,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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 11:17:12,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:12,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2023-11-17 11:17:12,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:12,906 INFO L124 PetriNetUnfolderBase]: 287/510 cut-off events. [2023-11-17 11:17:12,906 INFO L125 PetriNetUnfolderBase]: For 603/605 co-relation queries the response was YES. [2023-11-17 11:17:12,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 510 events. 287/510 cut-off events. For 603/605 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2061 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 11:17:12,908 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2023-11-17 11:17:12,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 89 transitions, 627 flow [2023-11-17 11:17:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 11:17:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 11:17:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2023-11-17 11:17:12,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3992467043314501 [2023-11-17 11:17:12,909 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 212 transitions. [2023-11-17 11:17:12,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 212 transitions. [2023-11-17 11:17:12,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:12,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 212 transitions. [2023-11-17 11:17:12,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.555555555555557) internal successors, (212), 9 states have internal predecessors, (212), 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 11:17:12,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 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 11:17:12,911 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 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 11:17:12,911 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 178 flow. Second operand 9 states and 212 transitions. [2023-11-17 11:17:12,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 89 transitions, 627 flow [2023-11-17 11:17:12,915 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 11:17:12,915 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-11-17 11:17:12,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, 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 11:17:12,916 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2023-11-17 11:17:12,916 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-11-17 11:17:12,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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 11:17:12,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-17 11:17:12,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-17 11:17:12,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-17 11:17:12,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-17 11:17:12,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-17 11:17:12,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-17 11:17:12,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:17:12,920 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-17 11:17:12,923 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:17:12,923 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:17:12,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:17:12 BasicIcfg [2023-11-17 11:17:12,925 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:17:12,926 INFO L158 Benchmark]: Toolchain (without parser) took 2461.63ms. Allocated memory is still 259.0MB. Free memory was 206.2MB in the beginning and 193.2MB in the end (delta: 13.0MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. [2023-11-17 11:17:12,926 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 200.3MB. Free memory is still 151.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:17:12,926 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.63ms. Allocated memory is still 259.0MB. Free memory was 206.2MB in the beginning and 186.4MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:17:12,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.11ms. Allocated memory is still 259.0MB. Free memory was 186.2MB in the beginning and 184.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:17:12,927 INFO L158 Benchmark]: Boogie Preprocessor took 37.18ms. Allocated memory is still 259.0MB. Free memory was 184.3MB in the beginning and 182.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:17:12,927 INFO L158 Benchmark]: RCFGBuilder took 342.61ms. Allocated memory is still 259.0MB. Free memory was 182.6MB in the beginning and 163.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 11:17:12,927 INFO L158 Benchmark]: TraceAbstraction took 1650.44ms. Allocated memory is still 259.0MB. Free memory was 163.3MB in the beginning and 193.2MB in the end (delta: -29.9MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:17:12,928 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 200.3MB. Free memory is still 151.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 387.63ms. Allocated memory is still 259.0MB. Free memory was 206.2MB in the beginning and 186.4MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.11ms. Allocated memory is still 259.0MB. Free memory was 186.2MB in the beginning and 184.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.18ms. Allocated memory is still 259.0MB. Free memory was 184.3MB in the beginning and 182.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 342.61ms. Allocated memory is still 259.0MB. Free memory was 182.6MB in the beginning and 163.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 1650.44ms. Allocated memory is still 259.0MB. Free memory was 163.3MB in the beginning and 193.2MB in the end (delta: -29.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4s, 40 PlacesBefore, 32 PlacesAfterwards, 37 TransitionsBefore, 29 TransitionsAfterwards, 630 CoEnabledTransitionPairs, 4 FixpointIterations, 0 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 18 TotalNumberOfCompositions, 2428 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1144, independent: 1020, independent conditional: 0, independent unconditional: 1020, dependent: 124, dependent conditional: 0, dependent unconditional: 124, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 495, independent: 456, independent conditional: 0, independent unconditional: 456, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 495, independent: 441, independent conditional: 0, independent unconditional: 441, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1144, independent: 564, independent conditional: 0, independent unconditional: 564, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 495, unknown conditional: 0, unknown unconditional: 495] , Statistics on independence cache: Total cache size (in pairs): 178, Positive cache size: 155, Positive conditional cache size: 0, Positive unconditional cache size: 155, 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, 68 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: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 126 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 126 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 487 IncrementalHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 28 mSDtfsCounter, 487 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, 110 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 11:17:12,945 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...