/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/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:16:58,792 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:16:58,860 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 11:16:58,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:16:58,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:16:58,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:16:58,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:16:58,888 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:16:58,888 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:16:58,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:16:58,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:16:58,892 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:16:58,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:16:58,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:16:58,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:16:58,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:16:58,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:16:58,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:16:58,894 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:16:58,894 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:16:58,894 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:16:58,895 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:16:58,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:16:58,895 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:16:58,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:16:58,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:16:58,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:16:58,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:16:58,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:16:58,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:16:58,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:16:58,898 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:16:58,898 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:16:59,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:16:59,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:16:59,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:16:59,137 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:16:59,137 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:16:59,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2023-11-17 11:17:00,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:17:00,481 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:17:00,484 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2023-11-17 11:17:00,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d6674ec/204796d62a3b4daab71695642d65d9db/FLAGb5e6c1080 [2023-11-17 11:17:00,508 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d6674ec/204796d62a3b4daab71695642d65d9db [2023-11-17 11:17:00,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:17:00,511 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:17:00,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:17:00,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:17:00,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:17:00,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:17:00" (1/1) ... [2023-11-17 11:17:00,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518408fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00, skipping insertion in model container [2023-11-17 11:17:00,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:17:00" (1/1) ... [2023-11-17 11:17:00,569 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:17:00,711 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-17 11:17:00,829 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/lamport.i[32156,32169] [2023-11-17 11:17:00,837 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/lamport.i[34083,34096] [2023-11-17 11:17:00,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:17:00,857 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:17:00,872 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-17 11:17:00,888 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/lamport.i[32156,32169] [2023-11-17 11:17:00,901 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/lamport.i[34083,34096] [2023-11-17 11:17:00,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:17:00,934 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:17:00,935 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:17:00,935 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:17:00,940 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:17:00,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00 WrapperNode [2023-11-17 11:17:00,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:17:00,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:17:00,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:17:00,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:17:00,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00" (1/1) ... [2023-11-17 11:17:00,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00" (1/1) ... [2023-11-17 11:17:00,970 INFO L138 Inliner]: procedures = 171, calls = 83, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-11-17 11:17:00,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:17:00,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:17:00,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:17:00,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:17:00,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00" (1/1) ... [2023-11-17 11:17:00,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00" (1/1) ... [2023-11-17 11:17:00,980 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00" (1/1) ... [2023-11-17 11:17:00,980 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00" (1/1) ... [2023-11-17 11:17:00,984 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00" (1/1) ... [2023-11-17 11:17:00,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00" (1/1) ... [2023-11-17 11:17:00,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00" (1/1) ... [2023-11-17 11:17:00,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00" (1/1) ... [2023-11-17 11:17:00,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:17:00,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:17:00,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:17:00,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:17:00,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00" (1/1) ... [2023-11-17 11:17:00,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:17:01,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:17:01,023 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 11:17:01,044 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 11:17:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:17:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-17 11:17:01,051 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-17 11:17:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-17 11:17:01,051 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-17 11:17:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:17:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:17:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:17:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:17:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:17:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:17:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:17:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:17:01,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:17:01,055 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 11:17:01,142 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:17:01,143 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:17:01,322 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:17:01,404 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:17:01,404 INFO L307 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-17 11:17:01,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:17:01 BoogieIcfgContainer [2023-11-17 11:17:01,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:17:01,407 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:17:01,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:17:01,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:17:01,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:17:00" (1/3) ... [2023-11-17 11:17:01,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e5c70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:17:01, skipping insertion in model container [2023-11-17 11:17:01,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:00" (2/3) ... [2023-11-17 11:17:01,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e5c70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:17:01, skipping insertion in model container [2023-11-17 11:17:01,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:17:01" (3/3) ... [2023-11-17 11:17:01,411 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2023-11-17 11:17:01,425 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:17:01,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 11:17:01,426 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:17:01,483 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 11:17:01,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 89 transitions, 192 flow [2023-11-17 11:17:01,548 INFO L124 PetriNetUnfolderBase]: 18/87 cut-off events. [2023-11-17 11:17:01,549 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:17:01,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 18/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 228 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2023-11-17 11:17:01,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 89 transitions, 192 flow [2023-11-17 11:17:01,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 85 transitions, 179 flow [2023-11-17 11:17:01,561 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:17:01,571 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 85 transitions, 179 flow [2023-11-17 11:17:01,575 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 85 transitions, 179 flow [2023-11-17 11:17:01,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 85 transitions, 179 flow [2023-11-17 11:17:01,588 INFO L124 PetriNetUnfolderBase]: 18/85 cut-off events. [2023-11-17 11:17:01,591 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:17:01,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 85 events. 18/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 209 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2023-11-17 11:17:01,597 INFO L119 LiptonReduction]: Number of co-enabled transitions 3510 [2023-11-17 11:17:02,189 INFO L134 LiptonReduction]: Checked pairs total: 7554 [2023-11-17 11:17:02,189 INFO L136 LiptonReduction]: Total number of compositions: 42 [2023-11-17 11:17:02,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:17:02,209 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;@27e216e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:17:02,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 11:17:02,214 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:17:02,214 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-17 11:17:02,214 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:17:02,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:02,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-17 11:17:02,215 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 11:17:02,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash 10568154, now seen corresponding path program 1 times [2023-11-17 11:17:02,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:02,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324858612] [2023-11-17 11:17:02,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:02,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:02,368 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 11:17:02,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:02,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324858612] [2023-11-17 11:17:02,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324858612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:02,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:02,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:17:02,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659821361] [2023-11-17 11:17:02,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:02,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 11:17:02,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 11:17:02,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 11:17:02,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 131 [2023-11-17 11:17:02,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 60 transitions, 129 flow. Second operand has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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 11:17:02,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:02,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 131 [2023-11-17 11:17:02,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:02,556 INFO L124 PetriNetUnfolderBase]: 872/1375 cut-off events. [2023-11-17 11:17:02,557 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-17 11:17:02,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2629 conditions, 1375 events. 872/1375 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6453 event pairs, 428 based on Foata normal form. 0/922 useless extension candidates. Maximal degree in co-relation 2480. Up to 1218 conditions per place. [2023-11-17 11:17:02,568 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 38 selfloop transitions, 0 changer transitions 0/54 dead transitions. [2023-11-17 11:17:02,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 193 flow [2023-11-17 11:17:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 11:17:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 11:17:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 172 transitions. [2023-11-17 11:17:02,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6564885496183206 [2023-11-17 11:17:02,581 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 172 transitions. [2023-11-17 11:17:02,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 172 transitions. [2023-11-17 11:17:02,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:02,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 172 transitions. [2023-11-17 11:17:02,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 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 11:17:02,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 11:17:02,591 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 11:17:02,593 INFO L175 Difference]: Start difference. First operand has 49 places, 60 transitions, 129 flow. Second operand 2 states and 172 transitions. [2023-11-17 11:17:02,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 193 flow [2023-11-17 11:17:02,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:17:02,597 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 112 flow [2023-11-17 11:17:02,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2023-11-17 11:17:02,602 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2023-11-17 11:17:02,602 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 112 flow [2023-11-17 11:17:02,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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 11:17:02,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:02,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:02,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:17:02,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:17:02,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1535692269, now seen corresponding path program 1 times [2023-11-17 11:17:02,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:02,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620690371] [2023-11-17 11:17:02,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:02,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:02,696 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 11:17:02,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:02,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620690371] [2023-11-17 11:17:02,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620690371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:02,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:02,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:17:02,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797886510] [2023-11-17 11:17:02,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:02,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:17:02,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:17:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:17:02,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 131 [2023-11-17 11:17:02,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 11:17:02,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:02,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 131 [2023-11-17 11:17:02,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:02,877 INFO L124 PetriNetUnfolderBase]: 1037/1634 cut-off events. [2023-11-17 11:17:02,877 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 11:17:02,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3148 conditions, 1634 events. 1037/1634 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7751 event pairs, 369 based on Foata normal form. 0/1103 useless extension candidates. Maximal degree in co-relation 3145. Up to 1080 conditions per place. [2023-11-17 11:17:02,884 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 57 selfloop transitions, 4 changer transitions 1/75 dead transitions. [2023-11-17 11:17:02,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 279 flow [2023-11-17 11:17:02,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:17:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:17:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-11-17 11:17:02,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055979643765903 [2023-11-17 11:17:02,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-11-17 11:17:02,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-11-17 11:17:02,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:02,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-11-17 11:17:02,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 11:17:02,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 11:17:02,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 11:17:02,893 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 112 flow. Second operand 3 states and 238 transitions. [2023-11-17 11:17:02,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 279 flow [2023-11-17 11:17:02,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 75 transitions, 279 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:17:02,895 INFO L231 Difference]: Finished difference. Result has 51 places, 55 transitions, 136 flow [2023-11-17 11:17:02,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=51, PETRI_TRANSITIONS=55} [2023-11-17 11:17:02,896 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2023-11-17 11:17:02,897 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 55 transitions, 136 flow [2023-11-17 11:17:02,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 11:17:02,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:02,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:02,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:17:02,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:17:02,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:02,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1274258323, now seen corresponding path program 1 times [2023-11-17 11:17:02,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:02,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005194446] [2023-11-17 11:17:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:02,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:02,987 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 11:17:02,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:02,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005194446] [2023-11-17 11:17:02,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005194446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:02,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:02,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:17:02,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172924923] [2023-11-17 11:17:02,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:02,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:17:02,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:02,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:17:02,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:17:02,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 131 [2023-11-17 11:17:02,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 11:17:02,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:02,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 131 [2023-11-17 11:17:02,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:03,123 INFO L124 PetriNetUnfolderBase]: 966/1529 cut-off events. [2023-11-17 11:17:03,124 INFO L125 PetriNetUnfolderBase]: For 177/181 co-relation queries the response was YES. [2023-11-17 11:17:03,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3132 conditions, 1529 events. 966/1529 cut-off events. For 177/181 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7145 event pairs, 373 based on Foata normal form. 38/1154 useless extension candidates. Maximal degree in co-relation 3127. Up to 1079 conditions per place. [2023-11-17 11:17:03,130 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 53 selfloop transitions, 3 changer transitions 4/73 dead transitions. [2023-11-17 11:17:03,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 73 transitions, 293 flow [2023-11-17 11:17:03,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:17:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:17:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-11-17 11:17:03,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6005089058524173 [2023-11-17 11:17:03,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-11-17 11:17:03,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-11-17 11:17:03,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:03,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-11-17 11:17:03,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 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 11:17:03,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 11:17:03,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 11:17:03,134 INFO L175 Difference]: Start difference. First operand has 51 places, 55 transitions, 136 flow. Second operand 3 states and 236 transitions. [2023-11-17 11:17:03,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 73 transitions, 293 flow [2023-11-17 11:17:03,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 73 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:17:03,139 INFO L231 Difference]: Finished difference. Result has 52 places, 55 transitions, 141 flow [2023-11-17 11:17:03,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=52, PETRI_TRANSITIONS=55} [2023-11-17 11:17:03,140 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-11-17 11:17:03,140 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 55 transitions, 141 flow [2023-11-17 11:17:03,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 11:17:03,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:03,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:03,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:17:03,141 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 11:17:03,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1865007554, now seen corresponding path program 1 times [2023-11-17 11:17:03,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:03,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636373648] [2023-11-17 11:17:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:03,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:03,248 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 11:17:03,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636373648] [2023-11-17 11:17:03,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636373648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:03,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:03,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:17:03,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546861274] [2023-11-17 11:17:03,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:03,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:17:03,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:03,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:17:03,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:17:03,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 131 [2023-11-17 11:17:03,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 55 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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 11:17:03,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:03,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 131 [2023-11-17 11:17:03,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:03,494 INFO L124 PetriNetUnfolderBase]: 1318/2159 cut-off events. [2023-11-17 11:17:03,494 INFO L125 PetriNetUnfolderBase]: For 570/582 co-relation queries the response was YES. [2023-11-17 11:17:03,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4462 conditions, 2159 events. 1318/2159 cut-off events. For 570/582 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10631 event pairs, 489 based on Foata normal form. 20/1730 useless extension candidates. Maximal degree in co-relation 4456. Up to 1405 conditions per place. [2023-11-17 11:17:03,503 INFO L140 encePairwiseOnDemand]: 115/131 looper letters, 50 selfloop transitions, 6 changer transitions 35/101 dead transitions. [2023-11-17 11:17:03,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 432 flow [2023-11-17 11:17:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:17:03,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:17:03,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 316 transitions. [2023-11-17 11:17:03,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48244274809160304 [2023-11-17 11:17:03,505 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 316 transitions. [2023-11-17 11:17:03,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 316 transitions. [2023-11-17 11:17:03,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:03,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 316 transitions. [2023-11-17 11:17:03,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 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 11:17:03,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 11:17:03,507 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 11:17:03,507 INFO L175 Difference]: Start difference. First operand has 52 places, 55 transitions, 141 flow. Second operand 5 states and 316 transitions. [2023-11-17 11:17:03,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 432 flow [2023-11-17 11:17:03,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 101 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:17:03,514 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 220 flow [2023-11-17 11:17:03,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-11-17 11:17:03,515 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2023-11-17 11:17:03,515 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 220 flow [2023-11-17 11:17:03,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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 11:17:03,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:03,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:03,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:17:03,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:17:03,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:03,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2034861126, now seen corresponding path program 2 times [2023-11-17 11:17:03,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:03,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576446357] [2023-11-17 11:17:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:03,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:03,543 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 11:17:03,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:03,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576446357] [2023-11-17 11:17:03,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576446357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:03,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:03,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:17:03,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496584862] [2023-11-17 11:17:03,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:03,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:17:03,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:03,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:17:03,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:17:03,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 131 [2023-11-17 11:17:03,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 11:17:03,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:03,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 131 [2023-11-17 11:17:03,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:03,798 INFO L124 PetriNetUnfolderBase]: 2200/3735 cut-off events. [2023-11-17 11:17:03,798 INFO L125 PetriNetUnfolderBase]: For 2400/2468 co-relation queries the response was YES. [2023-11-17 11:17:03,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9588 conditions, 3735 events. 2200/3735 cut-off events. For 2400/2468 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22350 event pairs, 577 based on Foata normal form. 6/3498 useless extension candidates. Maximal degree in co-relation 9579. Up to 1566 conditions per place. [2023-11-17 11:17:03,812 INFO L140 encePairwiseOnDemand]: 128/131 looper letters, 80 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2023-11-17 11:17:03,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 97 transitions, 523 flow [2023-11-17 11:17:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:17:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:17:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-11-17 11:17:03,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6590330788804071 [2023-11-17 11:17:03,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-11-17 11:17:03,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-11-17 11:17:03,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:03,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-11-17 11:17:03,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 11:17:03,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 11:17:03,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 11:17:03,816 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 220 flow. Second operand 3 states and 259 transitions. [2023-11-17 11:17:03,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 97 transitions, 523 flow [2023-11-17 11:17:03,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 97 transitions, 475 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-11-17 11:17:03,825 INFO L231 Difference]: Finished difference. Result has 58 places, 61 transitions, 210 flow [2023-11-17 11:17:03,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=58, PETRI_TRANSITIONS=61} [2023-11-17 11:17:03,826 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2023-11-17 11:17:03,826 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 61 transitions, 210 flow [2023-11-17 11:17:03,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 11:17:03,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:03,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:03,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:17:03,826 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:17:03,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:03,827 INFO L85 PathProgramCache]: Analyzing trace with hash -389811332, now seen corresponding path program 3 times [2023-11-17 11:17:03,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:03,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635491906] [2023-11-17 11:17:03,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:03,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:03,856 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 11:17:03,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:03,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635491906] [2023-11-17 11:17:03,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635491906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:03,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:03,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:17:03,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945681057] [2023-11-17 11:17:03,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:03,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:17:03,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:03,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:17:03,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:17:03,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 131 [2023-11-17 11:17:03,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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 11:17:03,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:03,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 131 [2023-11-17 11:17:03,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:04,217 INFO L124 PetriNetUnfolderBase]: 2774/4639 cut-off events. [2023-11-17 11:17:04,217 INFO L125 PetriNetUnfolderBase]: For 2093/2127 co-relation queries the response was YES. [2023-11-17 11:17:04,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11433 conditions, 4639 events. 2774/4639 cut-off events. For 2093/2127 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 27941 event pairs, 688 based on Foata normal form. 166/4680 useless extension candidates. Maximal degree in co-relation 11424. Up to 2030 conditions per place. [2023-11-17 11:17:04,227 INFO L140 encePairwiseOnDemand]: 117/131 looper letters, 53 selfloop transitions, 6 changer transitions 54/125 dead transitions. [2023-11-17 11:17:04,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 125 transitions, 647 flow [2023-11-17 11:17:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:17:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:17:04,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 333 transitions. [2023-11-17 11:17:04,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083969465648855 [2023-11-17 11:17:04,229 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 333 transitions. [2023-11-17 11:17:04,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 333 transitions. [2023-11-17 11:17:04,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:04,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 333 transitions. [2023-11-17 11:17:04,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 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 11:17:04,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 11:17:04,231 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 11:17:04,231 INFO L175 Difference]: Start difference. First operand has 58 places, 61 transitions, 210 flow. Second operand 5 states and 333 transitions. [2023-11-17 11:17:04,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 125 transitions, 647 flow [2023-11-17 11:17:04,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 125 transitions, 643 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:17:04,235 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 258 flow [2023-11-17 11:17:04,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2023-11-17 11:17:04,236 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 15 predicate places. [2023-11-17 11:17:04,236 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 258 flow [2023-11-17 11:17:04,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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 11:17:04,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:04,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:04,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:17:04,236 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:17:04,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:04,237 INFO L85 PathProgramCache]: Analyzing trace with hash 345645112, now seen corresponding path program 4 times [2023-11-17 11:17:04,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:04,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568839030] [2023-11-17 11:17:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:04,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:04,263 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 11:17:04,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:04,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568839030] [2023-11-17 11:17:04,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568839030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:04,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:04,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:17:04,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198870478] [2023-11-17 11:17:04,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:04,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:17:04,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:04,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:17:04,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:17:04,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 131 [2023-11-17 11:17:04,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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 11:17:04,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:04,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 131 [2023-11-17 11:17:04,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:04,624 INFO L124 PetriNetUnfolderBase]: 2548/4737 cut-off events. [2023-11-17 11:17:04,624 INFO L125 PetriNetUnfolderBase]: For 3611/3723 co-relation queries the response was YES. [2023-11-17 11:17:04,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12308 conditions, 4737 events. 2548/4737 cut-off events. For 3611/3723 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 31003 event pairs, 658 based on Foata normal form. 52/4751 useless extension candidates. Maximal degree in co-relation 12296. Up to 1722 conditions per place. [2023-11-17 11:17:04,641 INFO L140 encePairwiseOnDemand]: 127/131 looper letters, 98 selfloop transitions, 6 changer transitions 33/151 dead transitions. [2023-11-17 11:17:04,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 151 transitions, 905 flow [2023-11-17 11:17:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:17:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:17:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 415 transitions. [2023-11-17 11:17:04,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6335877862595419 [2023-11-17 11:17:04,643 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 415 transitions. [2023-11-17 11:17:04,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 415 transitions. [2023-11-17 11:17:04,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:04,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 415 transitions. [2023-11-17 11:17:04,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 11:17:04,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 11:17:04,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 11:17:04,645 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 258 flow. Second operand 5 states and 415 transitions. [2023-11-17 11:17:04,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 151 transitions, 905 flow [2023-11-17 11:17:04,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 151 transitions, 833 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-11-17 11:17:04,653 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 272 flow [2023-11-17 11:17:04,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2023-11-17 11:17:04,653 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2023-11-17 11:17:04,653 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 272 flow [2023-11-17 11:17:04,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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 11:17:04,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:04,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:04,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:17:04,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:17:04,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:04,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1806639894, now seen corresponding path program 1 times [2023-11-17 11:17:04,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:04,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416097679] [2023-11-17 11:17:04,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:04,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:04,702 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 11:17:04,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:04,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416097679] [2023-11-17 11:17:04,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416097679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:04,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:04,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:17:04,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521568704] [2023-11-17 11:17:04,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:04,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:17:04,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:04,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:17:04,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:17:04,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 131 [2023-11-17 11:17:04,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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 11:17:04,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:04,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 131 [2023-11-17 11:17:04,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:04,975 INFO L124 PetriNetUnfolderBase]: 1898/3792 cut-off events. [2023-11-17 11:17:04,975 INFO L125 PetriNetUnfolderBase]: For 2046/2159 co-relation queries the response was YES. [2023-11-17 11:17:04,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9363 conditions, 3792 events. 1898/3792 cut-off events. For 2046/2159 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 25715 event pairs, 736 based on Foata normal form. 82/3801 useless extension candidates. Maximal degree in co-relation 9352. Up to 2272 conditions per place. [2023-11-17 11:17:04,985 INFO L140 encePairwiseOnDemand]: 124/131 looper letters, 52 selfloop transitions, 6 changer transitions 18/100 dead transitions. [2023-11-17 11:17:04,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 551 flow [2023-11-17 11:17:04,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:17:04,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:17:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 357 transitions. [2023-11-17 11:17:04,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450381679389313 [2023-11-17 11:17:04,987 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 357 transitions. [2023-11-17 11:17:04,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 357 transitions. [2023-11-17 11:17:04,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:04,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 357 transitions. [2023-11-17 11:17:04,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 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 11:17:04,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 11:17:04,989 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 11:17:04,989 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 272 flow. Second operand 5 states and 357 transitions. [2023-11-17 11:17:04,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 551 flow [2023-11-17 11:17:04,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 100 transitions, 551 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:17:04,993 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 296 flow [2023-11-17 11:17:04,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2023-11-17 11:17:04,994 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 20 predicate places. [2023-11-17 11:17:04,994 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 296 flow [2023-11-17 11:17:04,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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 11:17:04,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:04,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:04,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:17:04,995 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:17:04,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:04,995 INFO L85 PathProgramCache]: Analyzing trace with hash 538668524, now seen corresponding path program 1 times [2023-11-17 11:17:04,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:04,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132596083] [2023-11-17 11:17:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:04,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:05,028 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 11:17:05,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:05,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132596083] [2023-11-17 11:17:05,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132596083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:05,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:05,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:17:05,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859282554] [2023-11-17 11:17:05,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:05,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:17:05,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:05,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:17:05,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:17:05,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 131 [2023-11-17 11:17:05,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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 11:17:05,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:05,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 131 [2023-11-17 11:17:05,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:05,294 INFO L124 PetriNetUnfolderBase]: 1629/3168 cut-off events. [2023-11-17 11:17:05,294 INFO L125 PetriNetUnfolderBase]: For 2474/2602 co-relation queries the response was YES. [2023-11-17 11:17:05,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8567 conditions, 3168 events. 1629/3168 cut-off events. For 2474/2602 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 19596 event pairs, 560 based on Foata normal form. 46/3158 useless extension candidates. Maximal degree in co-relation 8552. Up to 1774 conditions per place. [2023-11-17 11:17:05,305 INFO L140 encePairwiseOnDemand]: 124/131 looper letters, 0 selfloop transitions, 0 changer transitions 98/98 dead transitions. [2023-11-17 11:17:05,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 98 transitions, 568 flow [2023-11-17 11:17:05,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:17:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:17:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2023-11-17 11:17:05,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404580152671755 [2023-11-17 11:17:05,306 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 354 transitions. [2023-11-17 11:17:05,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 354 transitions. [2023-11-17 11:17:05,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:05,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 354 transitions. [2023-11-17 11:17:05,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.8) internal successors, (354), 5 states have internal predecessors, (354), 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 11:17:05,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 11:17:05,308 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 11:17:05,309 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 296 flow. Second operand 5 states and 354 transitions. [2023-11-17 11:17:05,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 98 transitions, 568 flow [2023-11-17 11:17:05,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 98 transitions, 524 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-11-17 11:17:05,318 INFO L231 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2023-11-17 11:17:05,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0} [2023-11-17 11:17:05,319 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 19 predicate places. [2023-11-17 11:17:05,319 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2023-11-17 11:17:05,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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 11:17:05,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-17 11:17:05,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-17 11:17:05,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-17 11:17:05,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-17 11:17:05,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-17 11:17:05,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-17 11:17:05,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:17:05,322 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2023-11-17 11:17:05,326 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:17:05,326 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:17:05,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:17:05 BasicIcfg [2023-11-17 11:17:05,328 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:17:05,329 INFO L158 Benchmark]: Toolchain (without parser) took 4817.83ms. Allocated memory was 242.2MB in the beginning and 467.7MB in the end (delta: 225.4MB). Free memory was 187.7MB in the beginning and 264.4MB in the end (delta: -76.7MB). Peak memory consumption was 150.3MB. Max. memory is 8.0GB. [2023-11-17 11:17:05,329 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 145.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:17:05,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 427.98ms. Allocated memory is still 242.2MB. Free memory was 187.7MB in the beginning and 166.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 11:17:05,329 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.56ms. Allocated memory is still 242.2MB. Free memory was 166.7MB in the beginning and 165.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:17:05,330 INFO L158 Benchmark]: Boogie Preprocessor took 20.52ms. Allocated memory is still 242.2MB. Free memory was 165.1MB in the beginning and 163.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:17:05,330 INFO L158 Benchmark]: RCFGBuilder took 413.96ms. Allocated memory is still 242.2MB. Free memory was 163.1MB in the beginning and 142.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 11:17:05,330 INFO L158 Benchmark]: TraceAbstraction took 3921.43ms. Allocated memory was 242.2MB in the beginning and 467.7MB in the end (delta: 225.4MB). Free memory was 141.6MB in the beginning and 264.4MB in the end (delta: -122.8MB). Peak memory consumption was 104.2MB. Max. memory is 8.0GB. [2023-11-17 11:17:05,331 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 145.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 427.98ms. Allocated memory is still 242.2MB. Free memory was 187.7MB in the beginning and 166.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.56ms. Allocated memory is still 242.2MB. Free memory was 166.7MB in the beginning and 165.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.52ms. Allocated memory is still 242.2MB. Free memory was 165.1MB in the beginning and 163.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 413.96ms. Allocated memory is still 242.2MB. Free memory was 163.1MB in the beginning and 142.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 3921.43ms. Allocated memory was 242.2MB in the beginning and 467.7MB in the end (delta: 225.4MB). Free memory was 141.6MB in the beginning and 264.4MB in the end (delta: -122.8MB). Peak memory consumption was 104.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6s, 74 PlacesBefore, 49 PlacesAfterwards, 85 TransitionsBefore, 60 TransitionsAfterwards, 3510 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 7554 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3681, independent: 3505, independent conditional: 0, independent unconditional: 3505, dependent: 176, dependent conditional: 0, dependent unconditional: 176, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1989, independent: 1935, independent conditional: 0, independent unconditional: 1935, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1989, independent: 1911, independent conditional: 0, independent unconditional: 1911, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 78, independent: 24, independent conditional: 0, independent unconditional: 24, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 94, independent: 22, independent conditional: 0, independent unconditional: 22, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3681, independent: 1570, independent conditional: 0, independent unconditional: 1570, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 1989, unknown conditional: 0, unknown unconditional: 1989] , Statistics on independence cache: Total cache size (in pairs): 450, Positive cache size: 406, Positive conditional cache size: 0, Positive unconditional cache size: 406, Negative cache size: 44, Negative conditional cache size: 0, Negative unconditional cache size: 44, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 834]: 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: 764]: 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, 136 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: 3.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 308 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 308 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1191 IncrementalHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 37 mSDtfsCounter, 1191 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=296occurred in iteration=8, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 11:17:05,344 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...