/usr/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 11:48:42,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 11:48:42,785 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 [2023-11-10 11:48:42,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 11:48:42,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 11:48:42,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 11:48:42,814 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 11:48:42,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 11:48:42,814 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 11:48:42,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 11:48:42,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 11:48:42,817 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 11:48:42,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 11:48:42,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 11:48:42,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 11:48:42,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 11:48:42,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 11:48:42,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 11:48:42,819 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 11:48:42,819 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 11:48:42,819 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 11:48:42,820 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 11:48:42,820 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 11:48:42,820 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 11:48:42,820 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 11:48:42,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:48:42,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 11:48:42,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 11:48:42,822 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 11:48:42,822 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 11:48:42,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 11:48:42,823 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 11:48:42,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 11:48:42,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 11:48:43,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 11:48:43,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 11:48:43,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 11:48:43,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 11:48:43,024 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 11:48:43,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-11-10 11:48:44,009 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 11:48:44,259 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 11:48:44,260 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-11-10 11:48:44,280 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a45cad9/aa3c3bd33ee14c3981af728cf97cc069/FLAG945894b18 [2023-11-10 11:48:44,292 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a45cad9/aa3c3bd33ee14c3981af728cf97cc069 [2023-11-10 11:48:44,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 11:48:44,298 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 11:48:44,300 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 11:48:44,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 11:48:44,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 11:48:44,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:48:44" (1/1) ... [2023-11-10 11:48:44,304 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb61a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:44, skipping insertion in model container [2023-11-10 11:48:44,305 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:48:44" (1/1) ... [2023-11-10 11:48:44,366 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 11:48:44,495 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-10 11:48:44,827 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i[75002,75015] [2023-11-10 11:48:44,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:48:44,884 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 11:48:44,893 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-10 11:48:44,930 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i[75002,75015] [2023-11-10 11:48:44,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:48:45,012 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:48:45,012 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:48:45,012 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:48:45,018 INFO L206 MainTranslator]: Completed translation [2023-11-10 11:48:45,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:45 WrapperNode [2023-11-10 11:48:45,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 11:48:45,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 11:48:45,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 11:48:45,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 11:48:45,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:45" (1/1) ... [2023-11-10 11:48:45,050 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:45" (1/1) ... [2023-11-10 11:48:45,069 INFO L138 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 144 [2023-11-10 11:48:45,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 11:48:45,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 11:48:45,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 11:48:45,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 11:48:45,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:45" (1/1) ... [2023-11-10 11:48:45,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:45" (1/1) ... [2023-11-10 11:48:45,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:45" (1/1) ... [2023-11-10 11:48:45,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:45" (1/1) ... [2023-11-10 11:48:45,088 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:45" (1/1) ... [2023-11-10 11:48:45,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:45" (1/1) ... [2023-11-10 11:48:45,093 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:45" (1/1) ... [2023-11-10 11:48:45,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:45" (1/1) ... [2023-11-10 11:48:45,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 11:48:45,099 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 11:48:45,099 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 11:48:45,099 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 11:48:45,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:45" (1/1) ... [2023-11-10 11:48:45,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:48:45,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 11:48:45,124 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) [2023-11-10 11:48:45,136 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 [2023-11-10 11:48:45,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 11:48:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 11:48:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 11:48:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 11:48:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-10 11:48:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 11:48:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-10 11:48:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 11:48:45,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 11:48:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-10 11:48:45,163 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-10 11:48:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 11:48:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 11:48:45,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 11:48:45,166 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 11:48:45,375 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 11:48:45,377 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 11:48:45,538 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 11:48:45,572 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 11:48:45,572 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-10 11:48:45,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:45 BoogieIcfgContainer [2023-11-10 11:48:45,575 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 11:48:45,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 11:48:45,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 11:48:45,578 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 11:48:45,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:48:44" (1/3) ... [2023-11-10 11:48:45,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7654d947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:48:45, skipping insertion in model container [2023-11-10 11:48:45,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:45" (2/3) ... [2023-11-10 11:48:45,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7654d947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:48:45, skipping insertion in model container [2023-11-10 11:48:45,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:45" (3/3) ... [2023-11-10 11:48:45,580 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of.i [2023-11-10 11:48:45,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 11:48:45,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-10 11:48:45,592 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 11:48:45,636 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-10 11:48:45,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 179 transitions, 372 flow [2023-11-10 11:48:45,745 INFO L124 PetriNetUnfolderBase]: 12/233 cut-off events. [2023-11-10 11:48:45,745 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 11:48:45,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 233 events. 12/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 479 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 122. Up to 4 conditions per place. [2023-11-10 11:48:45,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 179 transitions, 372 flow [2023-11-10 11:48:45,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 163 transitions, 338 flow [2023-11-10 11:48:45,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:48:45,772 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;@2280bcdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:48:45,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-10 11:48:45,793 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:48:45,793 INFO L124 PetriNetUnfolderBase]: 2/92 cut-off events. [2023-11-10 11:48:45,793 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:48:45,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:45,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:45,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-10 11:48:45,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash -422770189, now seen corresponding path program 1 times [2023-11-10 11:48:45,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:45,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722623980] [2023-11-10 11:48:45,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:45,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:46,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:46,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722623980] [2023-11-10 11:48:46,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722623980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:46,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:46,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-10 11:48:46,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696661991] [2023-11-10 11:48:46,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:46,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-10 11:48:46,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:46,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-10 11:48:46,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-10 11:48:46,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 179 [2023-11-10 11:48:46,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 163 transitions, 338 flow. Second operand has 5 states, 5 states have (on average 142.4) internal successors, (712), 5 states have internal predecessors, (712), 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) [2023-11-10 11:48:46,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:46,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 179 [2023-11-10 11:48:46,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:46,602 INFO L124 PetriNetUnfolderBase]: 327/1081 cut-off events. [2023-11-10 11:48:46,603 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-10 11:48:46,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 1081 events. 327/1081 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6776 event pairs, 327 based on Foata normal form. 12/992 useless extension candidates. Maximal degree in co-relation 1500. Up to 564 conditions per place. [2023-11-10 11:48:46,611 INFO L140 encePairwiseOnDemand]: 169/179 looper letters, 28 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2023-11-10 11:48:46,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 160 transitions, 396 flow [2023-11-10 11:48:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 11:48:46,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 11:48:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 879 transitions. [2023-11-10 11:48:46,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8184357541899442 [2023-11-10 11:48:46,624 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 879 transitions. [2023-11-10 11:48:46,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 879 transitions. [2023-11-10 11:48:46,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:46,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 879 transitions. [2023-11-10 11:48:46,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 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) [2023-11-10 11:48:46,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 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) [2023-11-10 11:48:46,637 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 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) [2023-11-10 11:48:46,638 INFO L175 Difference]: Start difference. First operand has 163 places, 163 transitions, 338 flow. Second operand 6 states and 879 transitions. [2023-11-10 11:48:46,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 160 transitions, 396 flow [2023-11-10 11:48:46,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 160 transitions, 388 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 11:48:46,645 INFO L231 Difference]: Finished difference. Result has 165 places, 158 transitions, 343 flow [2023-11-10 11:48:46,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=165, PETRI_TRANSITIONS=158} [2023-11-10 11:48:46,650 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 2 predicate places. [2023-11-10 11:48:46,650 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 158 transitions, 343 flow [2023-11-10 11:48:46,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.4) internal successors, (712), 5 states have internal predecessors, (712), 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) [2023-11-10 11:48:46,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:46,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:46,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 11:48:46,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-10 11:48:46,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:46,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1277367686, now seen corresponding path program 1 times [2023-11-10 11:48:46,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:46,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130811519] [2023-11-10 11:48:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:46,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:46,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130811519] [2023-11-10 11:48:46,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130811519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:46,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:46,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:48:46,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967533477] [2023-11-10 11:48:46,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:46,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:48:46,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:46,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:48:46,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:48:46,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 179 [2023-11-10 11:48:46,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 158 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 100.66666666666667) internal successors, (604), 6 states have internal predecessors, (604), 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) [2023-11-10 11:48:46,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:46,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 179 [2023-11-10 11:48:46,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:47,492 INFO L124 PetriNetUnfolderBase]: 1067/2336 cut-off events. [2023-11-10 11:48:47,492 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 11:48:47,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4237 conditions, 2336 events. 1067/2336 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15479 event pairs, 386 based on Foata normal form. 0/2274 useless extension candidates. Maximal degree in co-relation 4182. Up to 1090 conditions per place. [2023-11-10 11:48:47,506 INFO L140 encePairwiseOnDemand]: 162/179 looper letters, 99 selfloop transitions, 34 changer transitions 0/227 dead transitions. [2023-11-10 11:48:47,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 227 transitions, 747 flow [2023-11-10 11:48:47,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 11:48:47,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 11:48:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1115 transitions. [2023-11-10 11:48:47,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6229050279329609 [2023-11-10 11:48:47,509 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1115 transitions. [2023-11-10 11:48:47,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1115 transitions. [2023-11-10 11:48:47,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:47,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1115 transitions. [2023-11-10 11:48:47,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 111.5) internal successors, (1115), 10 states have internal predecessors, (1115), 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) [2023-11-10 11:48:47,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 179.0) internal successors, (1969), 11 states have internal predecessors, (1969), 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) [2023-11-10 11:48:47,515 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 179.0) internal successors, (1969), 11 states have internal predecessors, (1969), 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) [2023-11-10 11:48:47,516 INFO L175 Difference]: Start difference. First operand has 165 places, 158 transitions, 343 flow. Second operand 10 states and 1115 transitions. [2023-11-10 11:48:47,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 227 transitions, 747 flow [2023-11-10 11:48:47,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 227 transitions, 746 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-10 11:48:47,522 INFO L231 Difference]: Finished difference. Result has 179 places, 186 transitions, 561 flow [2023-11-10 11:48:47,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=561, PETRI_PLACES=179, PETRI_TRANSITIONS=186} [2023-11-10 11:48:47,522 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 16 predicate places. [2023-11-10 11:48:47,523 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 186 transitions, 561 flow [2023-11-10 11:48:47,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.66666666666667) internal successors, (604), 6 states have internal predecessors, (604), 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) [2023-11-10 11:48:47,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:47,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:47,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 11:48:47,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-10 11:48:47,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1406446780, now seen corresponding path program 1 times [2023-11-10 11:48:47,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:47,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479957054] [2023-11-10 11:48:47,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:47,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:47,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:47,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479957054] [2023-11-10 11:48:47,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479957054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:47,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:47,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:48:47,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500692919] [2023-11-10 11:48:47,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:47,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:48:47,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:47,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:48:47,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:48:47,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 179 [2023-11-10 11:48:47,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 186 transitions, 561 flow. Second operand has 6 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 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) [2023-11-10 11:48:47,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:47,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 179 [2023-11-10 11:48:47,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:48,353 INFO L124 PetriNetUnfolderBase]: 1371/2971 cut-off events. [2023-11-10 11:48:48,353 INFO L125 PetriNetUnfolderBase]: For 6536/6558 co-relation queries the response was YES. [2023-11-10 11:48:48,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9355 conditions, 2971 events. 1371/2971 cut-off events. For 6536/6558 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 21040 event pairs, 443 based on Foata normal form. 48/2974 useless extension candidates. Maximal degree in co-relation 8475. Up to 1417 conditions per place. [2023-11-10 11:48:48,374 INFO L140 encePairwiseOnDemand]: 164/179 looper letters, 82 selfloop transitions, 39 changer transitions 64/276 dead transitions. [2023-11-10 11:48:48,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 276 transitions, 1487 flow [2023-11-10 11:48:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 11:48:48,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 11:48:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1212 transitions. [2023-11-10 11:48:48,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6155408836973083 [2023-11-10 11:48:48,376 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1212 transitions. [2023-11-10 11:48:48,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1212 transitions. [2023-11-10 11:48:48,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:48,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1212 transitions. [2023-11-10 11:48:48,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 110.18181818181819) internal successors, (1212), 11 states have internal predecessors, (1212), 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) [2023-11-10 11:48:48,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 179.0) internal successors, (2148), 12 states have internal predecessors, (2148), 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) [2023-11-10 11:48:48,384 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 179.0) internal successors, (2148), 12 states have internal predecessors, (2148), 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) [2023-11-10 11:48:48,384 INFO L175 Difference]: Start difference. First operand has 179 places, 186 transitions, 561 flow. Second operand 11 states and 1212 transitions. [2023-11-10 11:48:48,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 276 transitions, 1487 flow [2023-11-10 11:48:48,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 276 transitions, 1487 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-10 11:48:48,395 INFO L231 Difference]: Finished difference. Result has 197 places, 196 transitions, 866 flow [2023-11-10 11:48:48,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=866, PETRI_PLACES=197, PETRI_TRANSITIONS=196} [2023-11-10 11:48:48,396 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 34 predicate places. [2023-11-10 11:48:48,396 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 196 transitions, 866 flow [2023-11-10 11:48:48,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 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) [2023-11-10 11:48:48,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:48,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:48,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 11:48:48,397 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-10 11:48:48,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:48,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1388254189, now seen corresponding path program 1 times [2023-11-10 11:48:48,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:48,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930963979] [2023-11-10 11:48:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:48,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:48,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:48,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930963979] [2023-11-10 11:48:48,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930963979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:48,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:48,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-10 11:48:48,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282503024] [2023-11-10 11:48:48,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:48,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 11:48:48,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:48,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 11:48:48,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 11:48:48,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 179 [2023-11-10 11:48:48,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 196 transitions, 866 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2023-11-10 11:48:48,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:48,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 179 [2023-11-10 11:48:48,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:48,821 INFO L124 PetriNetUnfolderBase]: 826/2232 cut-off events. [2023-11-10 11:48:48,822 INFO L125 PetriNetUnfolderBase]: For 18124/18161 co-relation queries the response was YES. [2023-11-10 11:48:48,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9546 conditions, 2232 events. 826/2232 cut-off events. For 18124/18161 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 17487 event pairs, 298 based on Foata normal form. 0/2171 useless extension candidates. Maximal degree in co-relation 9311. Up to 1119 conditions per place. [2023-11-10 11:48:48,844 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 76 selfloop transitions, 7 changer transitions 0/209 dead transitions. [2023-11-10 11:48:48,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 209 transitions, 1131 flow [2023-11-10 11:48:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 11:48:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 11:48:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-11-10 11:48:48,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8324022346368715 [2023-11-10 11:48:48,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-11-10 11:48:48,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-11-10 11:48:48,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:48,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-11-10 11:48:48,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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) [2023-11-10 11:48:48,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2023-11-10 11:48:48,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2023-11-10 11:48:48,847 INFO L175 Difference]: Start difference. First operand has 197 places, 196 transitions, 866 flow. Second operand 3 states and 447 transitions. [2023-11-10 11:48:48,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 209 transitions, 1131 flow [2023-11-10 11:48:48,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 209 transitions, 1069 flow, removed 31 selfloop flow, removed 7 redundant places. [2023-11-10 11:48:48,862 INFO L231 Difference]: Finished difference. Result has 180 places, 202 transitions, 930 flow [2023-11-10 11:48:48,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=930, PETRI_PLACES=180, PETRI_TRANSITIONS=202} [2023-11-10 11:48:48,863 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 17 predicate places. [2023-11-10 11:48:48,863 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 202 transitions, 930 flow [2023-11-10 11:48:48,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2023-11-10 11:48:48,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:48,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:48,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 11:48:48,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-10 11:48:48,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:48,864 INFO L85 PathProgramCache]: Analyzing trace with hash 86207262, now seen corresponding path program 1 times [2023-11-10 11:48:48,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:48,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752390016] [2023-11-10 11:48:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:48,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752390016] [2023-11-10 11:48:48,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752390016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:48,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:48,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-10 11:48:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092086727] [2023-11-10 11:48:48,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:48,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 11:48:48,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:48,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 11:48:48,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 11:48:48,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 179 [2023-11-10 11:48:48,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 202 transitions, 930 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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) [2023-11-10 11:48:48,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:48,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 179 [2023-11-10 11:48:48,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:49,294 INFO L124 PetriNetUnfolderBase]: 926/2395 cut-off events. [2023-11-10 11:48:49,294 INFO L125 PetriNetUnfolderBase]: For 26093/26144 co-relation queries the response was YES. [2023-11-10 11:48:49,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11153 conditions, 2395 events. 926/2395 cut-off events. For 26093/26144 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 18590 event pairs, 327 based on Foata normal form. 1/2349 useless extension candidates. Maximal degree in co-relation 10244. Up to 1233 conditions per place. [2023-11-10 11:48:49,317 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 80 selfloop transitions, 12 changer transitions 0/218 dead transitions. [2023-11-10 11:48:49,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 218 transitions, 1323 flow [2023-11-10 11:48:49,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 11:48:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 11:48:49,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-11-10 11:48:49,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8305400372439479 [2023-11-10 11:48:49,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-11-10 11:48:49,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-11-10 11:48:49,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:49,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-11-10 11:48:49,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2023-11-10 11:48:49,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2023-11-10 11:48:49,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2023-11-10 11:48:49,325 INFO L175 Difference]: Start difference. First operand has 180 places, 202 transitions, 930 flow. Second operand 3 states and 446 transitions. [2023-11-10 11:48:49,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 218 transitions, 1323 flow [2023-11-10 11:48:49,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 218 transitions, 1123 flow, removed 88 selfloop flow, removed 2 redundant places. [2023-11-10 11:48:49,341 INFO L231 Difference]: Finished difference. Result has 182 places, 212 transitions, 992 flow [2023-11-10 11:48:49,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=992, PETRI_PLACES=182, PETRI_TRANSITIONS=212} [2023-11-10 11:48:49,343 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 19 predicate places. [2023-11-10 11:48:49,343 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 212 transitions, 992 flow [2023-11-10 11:48:49,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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) [2023-11-10 11:48:49,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:49,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:49,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 11:48:49,344 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-10 11:48:49,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:49,345 INFO L85 PathProgramCache]: Analyzing trace with hash 813949605, now seen corresponding path program 1 times [2023-11-10 11:48:49,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:49,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597708249] [2023-11-10 11:48:49,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:49,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:48:49,388 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 11:48:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:48:49,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 11:48:49,454 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 11:48:49,455 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-11-10 11:48:49,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-11-10 11:48:49,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-11-10 11:48:49,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-11-10 11:48:49,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-11-10 11:48:49,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-11-10 11:48:49,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-10 11:48:49,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-10 11:48:49,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 11:48:49,457 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-10 11:48:49,461 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 11:48:49,461 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 11:48:49,504 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret21 could not be translated [2023-11-10 11:48:49,505 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-10 11:48:49,506 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-10 11:48:49,506 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre13 could not be translated [2023-11-10 11:48:49,506 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret22 could not be translated [2023-11-10 11:48:49,507 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet7 [2023-11-10 11:48:49,507 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet7 [2023-11-10 11:48:49,507 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet7 [2023-11-10 11:48:49,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:48:49 BasicIcfg [2023-11-10 11:48:49,523 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 11:48:49,523 INFO L158 Benchmark]: Toolchain (without parser) took 5225.36ms. Allocated memory was 361.8MB in the beginning and 525.3MB in the end (delta: 163.6MB). Free memory was 321.2MB in the beginning and 358.1MB in the end (delta: -36.9MB). Peak memory consumption was 127.7MB. Max. memory is 8.0GB. [2023-11-10 11:48:49,523 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 210.8MB. Free memory is still 159.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 11:48:49,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 718.25ms. Allocated memory is still 361.8MB. Free memory was 321.2MB in the beginning and 267.2MB in the end (delta: 54.0MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. [2023-11-10 11:48:49,524 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.51ms. Allocated memory is still 361.8MB. Free memory was 267.2MB in the beginning and 263.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-11-10 11:48:49,524 INFO L158 Benchmark]: Boogie Preprocessor took 28.15ms. Allocated memory is still 361.8MB. Free memory was 263.5MB in the beginning and 260.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:48:49,524 INFO L158 Benchmark]: RCFGBuilder took 476.08ms. Allocated memory is still 361.8MB. Free memory was 260.9MB in the beginning and 230.0MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-11-10 11:48:49,525 INFO L158 Benchmark]: TraceAbstraction took 3946.35ms. Allocated memory was 361.8MB in the beginning and 525.3MB in the end (delta: 163.6MB). Free memory was 229.5MB in the beginning and 358.1MB in the end (delta: -128.6MB). Peak memory consumption was 36.5MB. Max. memory is 8.0GB. [2023-11-10 11:48:49,526 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 210.8MB. Free memory is still 159.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 718.25ms. Allocated memory is still 361.8MB. Free memory was 321.2MB in the beginning and 267.2MB in the end (delta: 54.0MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.51ms. Allocated memory is still 361.8MB. Free memory was 267.2MB in the beginning and 263.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.15ms. Allocated memory is still 361.8MB. Free memory was 263.5MB in the beginning and 260.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 476.08ms. Allocated memory is still 361.8MB. Free memory was 260.9MB in the beginning and 230.0MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * TraceAbstraction took 3946.35ms. Allocated memory was 361.8MB in the beginning and 525.3MB in the end (delta: 163.6MB). Free memory was 229.5MB in the beginning and 358.1MB in the end (delta: -128.6MB). Peak memory consumption was 36.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret21 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret22 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet7 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet7 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet7 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; VAL [t1={3:0}, t2={4:0}] [L1745] CALL, EXPR 0 my_drv_init() [L1739] 0 return 0; VAL [\result=0, t1={3:0}, t2={4:0}] [L1745] RET, EXPR 0 my_drv_init() [L1745] 0 int ret = my_drv_init(); VAL [ret=0, t1={3:0}, t2={4:0}] [L1746] COND TRUE 0 ret==0 VAL [ret=0, t1={3:0}, t2={4:0}] [L1747] 0 int probe_ret; VAL [ret=0, t1={3:0}, t2={4:0}] [L1748] 0 struct my_data data; VAL [data={5:0}, ret=0, t1={3:0}, t2={4:0}] [L1749] CALL, EXPR 0 my_drv_probe(&data) [L1706] 0 struct device *d = &data->dev; VAL [d={5:24}, data={5:0}, data={5:0}, t1={3:0}, t2={4:0}] [L1708] 0 data->shared.a = 0 VAL [d={5:24}, data={5:0}, data={5:0}, t1={3:0}, t2={4:0}] [L1709] 0 data->shared.b = 0 VAL [d={5:24}, data={5:0}, data={5:0}, t1={3:0}, t2={4:0}] [L1710] 0 int res = __VERIFIER_nondet_int(); VAL [d={5:24}, data={5:0}, data={5:0}, res=0, t1={3:0}, t2={4:0}] [L1711] COND FALSE 0 !(\read(res)) VAL [d={5:24}, data={5:0}, data={5:0}, res=0, t1={3:0}, t2={4:0}] [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={5:24}, d={5:24}, data={5:0}, data={5:0}, res=0, t1={3:0}, t2={4:0}] [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [arg={5:24}, d={5:24}, data={5:0}, data={5:0}, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; VAL [\result=0, arg={5:24}, d={5:24}, data={5:0}, data={5:0}, res=0, t1={3:0}, t2={4:0}] [L1749] RET, EXPR 0 my_drv_probe(&data) [L1749] 0 probe_ret = my_drv_probe(&data) VAL [arg={5:24}, data={5:0}, probe_ret=0, ret=0, t1={3:0}, t2={4:0}] [L1750] COND TRUE 0 probe_ret==0 [L1751] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; VAL [arg={5:24}, data={5:0}, data={5:0}, status={7:0}, t1={3:0}, t2={4:0}] [L1723] 0 data->shared.a = 3 VAL [arg={5:24}, data={5:0}, data={5:0}, status={7:0}, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; VAL [arg={5:24}, arg={5:24}, dev={5:24}, t1={3:0}, t2={4:0}] [L1690] 1 struct my_data *data; VAL [arg={5:24}, arg={5:24}, dev={5:24}, t1={3:0}, t2={4:0}] [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, dev={5:24}, t1={3:0}, t2={4:0}] [L1691] 1 { const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );} VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, dev={5:24}, t1={3:0}, t2={4:0}] [L1691] 1 { const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );} VAL [arg={5:24}, arg={5:24}, dev={5:24}, t1={3:0}, t2={4:0}] [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) VAL [arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, t1={3:0}, t2={4:0}] [L1694] 1 data->shared.a = 1 VAL [arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, t1={3:0}, t2={4:0}] [L1726] 0 data->shared.b = 3 VAL [arg={5:24}, arg={5:24}, data={5:0}, data={5:0}, data={5:0}, dev={5:24}, status={7:0}, t1={3:0}, t2={4:0}] [L1729] EXPR 0 data->shared.a [L1729] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, expression=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 190 locations, 8 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: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 397 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 267 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 701 IncrementalHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 130 mSDtfsCounter, 701 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=992occurred in iteration=5, InterpolantAutomatonStates: 33, 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, 1.0s InterpolantComputationTime, 368 NumberOfCodeBlocks, 368 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 485 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-10 11:48:49,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...