/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:17:51,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:17:51,971 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-NoLbe.epf [2023-12-09 15:17:51,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:17:51,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:17:51,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:17:51,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:17:52,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:17:52,000 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:17:52,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:17:52,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:17:52,005 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:17:52,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:17:52,006 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:17:52,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:17:52,006 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:17:52,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:17:52,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:17:52,007 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:17:52,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:17:52,007 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:17:52,008 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:17:52,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:17:52,009 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:17:52,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:17:52,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:17:52,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:17:52,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:17:52,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:17:52,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:17:52,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:17:52,012 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:17:52,012 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:17:52,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:17:52,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:17:52,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:17:52,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:17:52,260 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:17:52,261 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:17:52,262 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2023-12-09 15:17:53,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:17:53,648 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:17:53,649 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2023-12-09 15:17:53,657 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8858ad8b/24047ab07e2e4db09fe62dbd9c10be50/FLAG8985a8e80 [2023-12-09 15:17:53,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8858ad8b/24047ab07e2e4db09fe62dbd9c10be50 [2023-12-09 15:17:53,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:17:53,673 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:17:53,674 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:17:53,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:17:53,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:17:53,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:17:53" (1/1) ... [2023-12-09 15:17:53,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cfac048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53, skipping insertion in model container [2023-12-09 15:17:53,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:17:53" (1/1) ... [2023-12-09 15:17:53,702 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:17:53,882 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c[2358,2371] [2023-12-09 15:17:53,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:17:53,895 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:17:53,931 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c[2358,2371] [2023-12-09 15:17:53,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:17:53,940 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:17:53,941 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:17:53,947 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:17:53,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53 WrapperNode [2023-12-09 15:17:53,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:17:53,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:17:53,949 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:17:53,949 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:17:53,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53" (1/1) ... [2023-12-09 15:17:53,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53" (1/1) ... [2023-12-09 15:17:53,986 INFO L138 Inliner]: procedures = 20, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2023-12-09 15:17:53,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:17:53,987 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:17:53,987 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:17:53,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:17:53,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53" (1/1) ... [2023-12-09 15:17:53,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53" (1/1) ... [2023-12-09 15:17:53,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53" (1/1) ... [2023-12-09 15:17:53,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53" (1/1) ... [2023-12-09 15:17:54,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53" (1/1) ... [2023-12-09 15:17:54,006 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53" (1/1) ... [2023-12-09 15:17:54,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53" (1/1) ... [2023-12-09 15:17:54,008 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53" (1/1) ... [2023-12-09 15:17:54,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:17:54,011 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:17:54,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:17:54,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:17:54,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53" (1/1) ... [2023-12-09 15:17:54,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:17:54,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:17:54,042 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) [2023-12-09 15:17:54,047 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 [2023-12-09 15:17:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:17:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:17:54,065 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:17:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:17:54,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:17:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:17:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:17:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:17:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:17:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:17:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:17:54,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:17:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:17:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:17:54,068 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:17:54,149 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:17:54,151 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:17:54,361 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:17:54,382 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:17:54,383 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 15:17:54,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:17:54 BoogieIcfgContainer [2023-12-09 15:17:54,385 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:17:54,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:17:54,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:17:54,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:17:54,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:17:53" (1/3) ... [2023-12-09 15:17:54,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd28670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:17:54, skipping insertion in model container [2023-12-09 15:17:54,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:53" (2/3) ... [2023-12-09 15:17:54,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd28670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:17:54, skipping insertion in model container [2023-12-09 15:17:54,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:17:54" (3/3) ... [2023-12-09 15:17:54,392 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2023-12-09 15:17:54,407 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:17:54,407 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:17:54,407 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:17:54,481 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:17:54,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 100 transitions, 214 flow [2023-12-09 15:17:54,573 INFO L124 PetriNetUnfolderBase]: 6/98 cut-off events. [2023-12-09 15:17:54,573 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:17:54,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 6/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-12-09 15:17:54,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 100 transitions, 214 flow [2023-12-09 15:17:54,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 89 transitions, 190 flow [2023-12-09 15:17:54,590 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:17:54,596 INFO L362 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=true, 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;@3df9007e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:17:54,596 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:17:54,622 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:17:54,622 INFO L124 PetriNetUnfolderBase]: 6/88 cut-off events. [2023-12-09 15:17:54,622 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:17:54,622 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:54,623 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:54,624 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:54,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:54,629 INFO L85 PathProgramCache]: Analyzing trace with hash -264544734, now seen corresponding path program 1 times [2023-12-09 15:17:54,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:54,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723950105] [2023-12-09 15:17:54,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:54,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:17:55,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:55,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723950105] [2023-12-09 15:17:55,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723950105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:17:55,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:17:55,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:17:55,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266685595] [2023-12-09 15:17:55,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:17:55,418 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:17:55,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:55,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:17:55,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:17:55,452 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 100 [2023-12-09 15:17:55,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 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) [2023-12-09 15:17:55,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:55,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 100 [2023-12-09 15:17:55,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:55,668 INFO L124 PetriNetUnfolderBase]: 20/160 cut-off events. [2023-12-09 15:17:55,668 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-12-09 15:17:55,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 160 events. 20/160 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 436 event pairs, 4 based on Foata normal form. 18/169 useless extension candidates. Maximal degree in co-relation 116. Up to 40 conditions per place. [2023-12-09 15:17:55,674 INFO L140 encePairwiseOnDemand]: 84/100 looper letters, 19 selfloop transitions, 7 changer transitions 7/94 dead transitions. [2023-12-09 15:17:55,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 275 flow [2023-12-09 15:17:55,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:17:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:17:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 680 transitions. [2023-12-09 15:17:55,696 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7555555555555555 [2023-12-09 15:17:55,697 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 680 transitions. [2023-12-09 15:17:55,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 680 transitions. [2023-12-09 15:17:55,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:55,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 680 transitions. [2023-12-09 15:17:55,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.55555555555556) internal successors, (680), 9 states have internal predecessors, (680), 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) [2023-12-09 15:17:55,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 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) [2023-12-09 15:17:55,718 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 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) [2023-12-09 15:17:55,724 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 8 predicate places. [2023-12-09 15:17:55,724 INFO L500 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 275 flow [2023-12-09 15:17:55,725 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 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) [2023-12-09 15:17:55,725 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:55,725 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:55,725 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:17:55,726 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:55,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:55,726 INFO L85 PathProgramCache]: Analyzing trace with hash 137076722, now seen corresponding path program 1 times [2023-12-09 15:17:55,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:55,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704932992] [2023-12-09 15:17:55,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:55,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:17:56,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:56,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704932992] [2023-12-09 15:17:56,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704932992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:17:56,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:17:56,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:17:56,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056478589] [2023-12-09 15:17:56,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:17:56,115 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:17:56,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:56,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:17:56,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:17:56,117 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 100 [2023-12-09 15:17:56,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 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) [2023-12-09 15:17:56,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:56,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 100 [2023-12-09 15:17:56,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:56,293 INFO L124 PetriNetUnfolderBase]: 87/317 cut-off events. [2023-12-09 15:17:56,293 INFO L125 PetriNetUnfolderBase]: For 166/170 co-relation queries the response was YES. [2023-12-09 15:17:56,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 317 events. 87/317 cut-off events. For 166/170 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1369 event pairs, 10 based on Foata normal form. 1/281 useless extension candidates. Maximal degree in co-relation 452. Up to 100 conditions per place. [2023-12-09 15:17:56,297 INFO L140 encePairwiseOnDemand]: 90/100 looper letters, 46 selfloop transitions, 8 changer transitions 8/116 dead transitions. [2023-12-09 15:17:56,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 116 transitions, 481 flow [2023-12-09 15:17:56,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:17:56,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:17:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 501 transitions. [2023-12-09 15:17:56,299 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7157142857142857 [2023-12-09 15:17:56,299 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 501 transitions. [2023-12-09 15:17:56,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 501 transitions. [2023-12-09 15:17:56,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:56,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 501 transitions. [2023-12-09 15:17:56,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 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) [2023-12-09 15:17:56,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 100.0) internal successors, (800), 8 states have internal predecessors, (800), 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) [2023-12-09 15:17:56,303 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 100.0) internal successors, (800), 8 states have internal predecessors, (800), 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) [2023-12-09 15:17:56,304 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 14 predicate places. [2023-12-09 15:17:56,304 INFO L500 AbstractCegarLoop]: Abstraction has has 104 places, 116 transitions, 481 flow [2023-12-09 15:17:56,305 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 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) [2023-12-09 15:17:56,305 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:56,305 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:56,305 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:17:56,305 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:56,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:56,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1276777112, now seen corresponding path program 2 times [2023-12-09 15:17:56,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:56,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364419314] [2023-12-09 15:17:56,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:56,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:17:56,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:56,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364419314] [2023-12-09 15:17:56,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364419314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:17:56,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:17:56,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 15:17:56,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707767280] [2023-12-09 15:17:56,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:17:56,636 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 15:17:56,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:56,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 15:17:56,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-09 15:17:56,640 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 100 [2023-12-09 15:17:56,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 481 flow. Second operand has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 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) [2023-12-09 15:17:56,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:56,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 100 [2023-12-09 15:17:56,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:56,807 INFO L124 PetriNetUnfolderBase]: 89/329 cut-off events. [2023-12-09 15:17:56,808 INFO L125 PetriNetUnfolderBase]: For 335/351 co-relation queries the response was YES. [2023-12-09 15:17:56,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 329 events. 89/329 cut-off events. For 335/351 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1444 event pairs, 8 based on Foata normal form. 3/295 useless extension candidates. Maximal degree in co-relation 483. Up to 100 conditions per place. [2023-12-09 15:17:56,813 INFO L140 encePairwiseOnDemand]: 87/100 looper letters, 26 selfloop transitions, 11 changer transitions 13/119 dead transitions. [2023-12-09 15:17:56,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 119 transitions, 599 flow [2023-12-09 15:17:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:17:56,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:17:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 746 transitions. [2023-12-09 15:17:56,816 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.746 [2023-12-09 15:17:56,816 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 746 transitions. [2023-12-09 15:17:56,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 746 transitions. [2023-12-09 15:17:56,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:56,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 746 transitions. [2023-12-09 15:17:56,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 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) [2023-12-09 15:17:56,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 100.0) internal successors, (1100), 11 states have internal predecessors, (1100), 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) [2023-12-09 15:17:56,822 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 100.0) internal successors, (1100), 11 states have internal predecessors, (1100), 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) [2023-12-09 15:17:56,824 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 23 predicate places. [2023-12-09 15:17:56,824 INFO L500 AbstractCegarLoop]: Abstraction has has 113 places, 119 transitions, 599 flow [2023-12-09 15:17:56,825 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 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) [2023-12-09 15:17:56,825 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:56,825 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:56,825 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:17:56,825 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:56,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:56,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1173949786, now seen corresponding path program 1 times [2023-12-09 15:17:56,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:56,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930044107] [2023-12-09 15:17:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:56,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:17:57,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:57,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930044107] [2023-12-09 15:17:57,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930044107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:17:57,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:17:57,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:17:57,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458695449] [2023-12-09 15:17:57,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:17:57,067 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:17:57,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:57,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:17:57,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:17:57,069 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 100 [2023-12-09 15:17:57,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 119 transitions, 599 flow. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2023-12-09 15:17:57,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:57,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 100 [2023-12-09 15:17:57,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:57,296 INFO L124 PetriNetUnfolderBase]: 137/457 cut-off events. [2023-12-09 15:17:57,297 INFO L125 PetriNetUnfolderBase]: For 625/662 co-relation queries the response was YES. [2023-12-09 15:17:57,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1305 conditions, 457 events. 137/457 cut-off events. For 625/662 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2297 event pairs, 19 based on Foata normal form. 7/426 useless extension candidates. Maximal degree in co-relation 947. Up to 198 conditions per place. [2023-12-09 15:17:57,303 INFO L140 encePairwiseOnDemand]: 86/100 looper letters, 64 selfloop transitions, 14 changer transitions 25/153 dead transitions. [2023-12-09 15:17:57,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 153 transitions, 988 flow [2023-12-09 15:17:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:17:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:17:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 529 transitions. [2023-12-09 15:17:57,305 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.66125 [2023-12-09 15:17:57,306 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 529 transitions. [2023-12-09 15:17:57,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 529 transitions. [2023-12-09 15:17:57,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:57,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 529 transitions. [2023-12-09 15:17:57,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.125) internal successors, (529), 8 states have internal predecessors, (529), 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) [2023-12-09 15:17:57,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 100.0) internal successors, (900), 9 states have internal predecessors, (900), 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) [2023-12-09 15:17:57,311 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 100.0) internal successors, (900), 9 states have internal predecessors, (900), 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) [2023-12-09 15:17:57,313 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 30 predicate places. [2023-12-09 15:17:57,314 INFO L500 AbstractCegarLoop]: Abstraction has has 120 places, 153 transitions, 988 flow [2023-12-09 15:17:57,314 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2023-12-09 15:17:57,314 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:57,314 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:57,314 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:17:57,315 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:57,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:57,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1013439706, now seen corresponding path program 2 times [2023-12-09 15:17:57,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:57,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16916355] [2023-12-09 15:17:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:57,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:17:57,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:57,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16916355] [2023-12-09 15:17:57,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16916355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:17:57,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:17:57,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:17:57,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523320349] [2023-12-09 15:17:57,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:17:57,578 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:17:57,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:17:57,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:17:57,580 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 100 [2023-12-09 15:17:57,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 153 transitions, 988 flow. Second operand has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 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) [2023-12-09 15:17:57,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:57,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 100 [2023-12-09 15:17:57,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:57,734 INFO L124 PetriNetUnfolderBase]: 146/499 cut-off events. [2023-12-09 15:17:57,735 INFO L125 PetriNetUnfolderBase]: For 940/1021 co-relation queries the response was YES. [2023-12-09 15:17:57,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 499 events. 146/499 cut-off events. For 940/1021 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2441 event pairs, 24 based on Foata normal form. 4/468 useless extension candidates. Maximal degree in co-relation 1273. Up to 223 conditions per place. [2023-12-09 15:17:57,739 INFO L140 encePairwiseOnDemand]: 90/100 looper letters, 65 selfloop transitions, 11 changer transitions 25/161 dead transitions. [2023-12-09 15:17:57,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 161 transitions, 1224 flow [2023-12-09 15:17:57,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:17:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:17:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 492 transitions. [2023-12-09 15:17:57,742 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7028571428571428 [2023-12-09 15:17:57,742 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 492 transitions. [2023-12-09 15:17:57,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 492 transitions. [2023-12-09 15:17:57,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:57,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 492 transitions. [2023-12-09 15:17:57,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 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) [2023-12-09 15:17:57,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 100.0) internal successors, (800), 8 states have internal predecessors, (800), 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) [2023-12-09 15:17:57,745 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 100.0) internal successors, (800), 8 states have internal predecessors, (800), 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) [2023-12-09 15:17:57,747 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 36 predicate places. [2023-12-09 15:17:57,747 INFO L500 AbstractCegarLoop]: Abstraction has has 126 places, 161 transitions, 1224 flow [2023-12-09 15:17:57,749 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 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) [2023-12-09 15:17:57,749 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:57,749 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:57,749 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:17:57,750 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:57,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:57,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1757235726, now seen corresponding path program 1 times [2023-12-09 15:17:57,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:57,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702642080] [2023-12-09 15:17:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:57,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:17:58,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:58,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702642080] [2023-12-09 15:17:58,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702642080] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:17:58,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117208541] [2023-12-09 15:17:58,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:58,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:17:58,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:17:58,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:17:58,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:17:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:58,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:17:58,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:17:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:17:58,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:17:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:17:58,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117208541] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:17:58,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:17:58,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-12-09 15:17:58,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380229145] [2023-12-09 15:17:58,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:17:58,641 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:17:58,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:58,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:17:58,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:17:58,643 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 100 [2023-12-09 15:17:58,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 161 transitions, 1224 flow. Second operand has 11 states, 11 states have (on average 73.36363636363636) internal successors, (807), 11 states have internal predecessors, (807), 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) [2023-12-09 15:17:58,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:58,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 100 [2023-12-09 15:17:58,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:58,907 INFO L124 PetriNetUnfolderBase]: 220/709 cut-off events. [2023-12-09 15:17:58,907 INFO L125 PetriNetUnfolderBase]: For 1817/1885 co-relation queries the response was YES. [2023-12-09 15:17:58,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2519 conditions, 709 events. 220/709 cut-off events. For 1817/1885 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4058 event pairs, 48 based on Foata normal form. 10/665 useless extension candidates. Maximal degree in co-relation 1931. Up to 346 conditions per place. [2023-12-09 15:17:58,915 INFO L140 encePairwiseOnDemand]: 84/100 looper letters, 26 selfloop transitions, 23 changer transitions 43/181 dead transitions. [2023-12-09 15:17:58,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 181 transitions, 1625 flow [2023-12-09 15:17:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 15:17:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 15:17:58,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 962 transitions. [2023-12-09 15:17:58,919 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.74 [2023-12-09 15:17:58,919 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 962 transitions. [2023-12-09 15:17:58,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 962 transitions. [2023-12-09 15:17:58,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:58,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 962 transitions. [2023-12-09 15:17:58,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.0) internal successors, (962), 13 states have internal predecessors, (962), 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) [2023-12-09 15:17:58,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 100.0) internal successors, (1400), 14 states have internal predecessors, (1400), 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) [2023-12-09 15:17:58,961 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 100.0) internal successors, (1400), 14 states have internal predecessors, (1400), 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) [2023-12-09 15:17:58,961 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 48 predicate places. [2023-12-09 15:17:58,961 INFO L500 AbstractCegarLoop]: Abstraction has has 138 places, 181 transitions, 1625 flow [2023-12-09 15:17:58,962 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 73.36363636363636) internal successors, (807), 11 states have internal predecessors, (807), 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) [2023-12-09 15:17:58,962 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:58,962 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:58,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 15:17:59,169 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-09 15:17:59,169 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:59,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:59,170 INFO L85 PathProgramCache]: Analyzing trace with hash 30377144, now seen corresponding path program 2 times [2023-12-09 15:17:59,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:59,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995510411] [2023-12-09 15:17:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:59,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:17:59,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:59,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995510411] [2023-12-09 15:17:59,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995510411] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:17:59,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802383928] [2023-12-09 15:17:59,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:17:59,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:17:59,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:17:59,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:17:59,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:17:59,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:17:59,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:17:59,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:17:59,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:17:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:17:59,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:17:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:17:59,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802383928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:17:59,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:17:59,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2023-12-09 15:17:59,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287257349] [2023-12-09 15:17:59,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:17:59,943 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:17:59,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:59,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:17:59,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:17:59,946 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 100 [2023-12-09 15:17:59,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 181 transitions, 1625 flow. Second operand has 12 states, 12 states have (on average 73.16666666666667) internal successors, (878), 12 states have internal predecessors, (878), 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) [2023-12-09 15:17:59,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:59,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 100 [2023-12-09 15:17:59,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:00,267 INFO L124 PetriNetUnfolderBase]: 220/709 cut-off events. [2023-12-09 15:18:00,267 INFO L125 PetriNetUnfolderBase]: For 2463/2514 co-relation queries the response was YES. [2023-12-09 15:18:00,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 709 events. 220/709 cut-off events. For 2463/2514 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4098 event pairs, 48 based on Foata normal form. 10/666 useless extension candidates. Maximal degree in co-relation 2049. Up to 346 conditions per place. [2023-12-09 15:18:00,272 INFO L140 encePairwiseOnDemand]: 85/100 looper letters, 0 selfloop transitions, 0 changer transitions 182/182 dead transitions. [2023-12-09 15:18:00,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 182 transitions, 1810 flow [2023-12-09 15:18:00,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 15:18:00,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 15:18:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 951 transitions. [2023-12-09 15:18:00,275 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7315384615384616 [2023-12-09 15:18:00,276 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 951 transitions. [2023-12-09 15:18:00,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 951 transitions. [2023-12-09 15:18:00,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:00,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 951 transitions. [2023-12-09 15:18:00,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.15384615384616) internal successors, (951), 13 states have internal predecessors, (951), 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) [2023-12-09 15:18:00,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 100.0) internal successors, (1400), 14 states have internal predecessors, (1400), 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) [2023-12-09 15:18:00,281 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 100.0) internal successors, (1400), 14 states have internal predecessors, (1400), 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) [2023-12-09 15:18:00,282 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 56 predicate places. [2023-12-09 15:18:00,282 INFO L500 AbstractCegarLoop]: Abstraction has has 146 places, 182 transitions, 1810 flow [2023-12-09 15:18:00,283 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.16666666666667) internal successors, (878), 12 states have internal predecessors, (878), 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) [2023-12-09 15:18:00,289 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/parallel-misc-2-unrolled.wvr.c_BEv2_AllErrorsAtOnce [2023-12-09 15:18:00,339 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:18:00,339 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:18:00,339 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:18:00,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:18:00,546 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-09 15:18:00,547 INFO L457 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1] [2023-12-09 15:18:00,550 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:18:00,550 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:18:00,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:18:00 BasicIcfg [2023-12-09 15:18:00,561 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:18:00,562 INFO L158 Benchmark]: Toolchain (without parser) took 6888.63ms. Allocated memory was 181.4MB in the beginning and 314.6MB in the end (delta: 133.2MB). Free memory was 122.9MB in the beginning and 238.7MB in the end (delta: -115.9MB). Peak memory consumption was 17.6MB. Max. memory is 8.0GB. [2023-12-09 15:18:00,562 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 181.4MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:18:00,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.60ms. Allocated memory is still 181.4MB. Free memory was 122.6MB in the beginning and 111.3MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:18:00,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.93ms. Allocated memory is still 181.4MB. Free memory was 111.3MB in the beginning and 109.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:18:00,563 INFO L158 Benchmark]: Boogie Preprocessor took 22.55ms. Allocated memory is still 181.4MB. Free memory was 109.8MB in the beginning and 108.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:18:00,565 INFO L158 Benchmark]: RCFGBuilder took 374.09ms. Allocated memory was 181.4MB in the beginning and 245.4MB in the end (delta: 64.0MB). Free memory was 108.5MB in the beginning and 208.3MB in the end (delta: -99.8MB). Peak memory consumption was 16.0MB. Max. memory is 8.0GB. [2023-12-09 15:18:00,565 INFO L158 Benchmark]: TraceAbstraction took 6174.92ms. Allocated memory was 245.4MB in the beginning and 314.6MB in the end (delta: 69.2MB). Free memory was 207.8MB in the beginning and 238.7MB in the end (delta: -31.0MB). Peak memory consumption was 38.3MB. Max. memory is 8.0GB. [2023-12-09 15:18:00,567 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 181.4MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 273.60ms. Allocated memory is still 181.4MB. Free memory was 122.6MB in the beginning and 111.3MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.93ms. Allocated memory is still 181.4MB. Free memory was 111.3MB in the beginning and 109.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.55ms. Allocated memory is still 181.4MB. Free memory was 109.8MB in the beginning and 108.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 374.09ms. Allocated memory was 181.4MB in the beginning and 245.4MB in the end (delta: 64.0MB). Free memory was 108.5MB in the beginning and 208.3MB in the end (delta: -99.8MB). Peak memory consumption was 16.0MB. Max. memory is 8.0GB. * TraceAbstraction took 6174.92ms. Allocated memory was 245.4MB in the beginning and 314.6MB in the end (delta: 69.2MB). Free memory was 207.8MB in the beginning and 238.7MB in the end (delta: -31.0MB). Peak memory consumption was 38.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: 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, 123 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 206 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 206 mSDsluCounter, 231 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 125 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 701 IncrementalHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 106 mSDtfsCounter, 701 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 410 GetRequests, 321 SyntacticMatches, 22 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1810occurred in iteration=7, InterpolantAutomatonStates: 67, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 693 NumberOfCodeBlocks, 693 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 848 ConstructedInterpolants, 0 QuantifiedInterpolants, 5013 SizeOfPredicates, 18 NumberOfNonLiveVariables, 376 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 10/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-09 15:18:00,582 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...