/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:21:16,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:21:17,025 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 [2023-12-05 21:21:17,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:21:17,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:21:17,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:21:17,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:21:17,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:21:17,060 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:21:17,063 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:21:17,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:21:17,064 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:21:17,064 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:21:17,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:21:17,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:21:17,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:21:17,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:21:17,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:21:17,067 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:21:17,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:21:17,067 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:21:17,068 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:21:17,068 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:21:17,068 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:21:17,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:21:17,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:21:17,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:21:17,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:21:17,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:21:17,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:21:17,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:21:17,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:21:17,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:21:17,072 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:21:17,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:21:17,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:21:17,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:21:17,293 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:21:17,293 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:21:17,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-12-05 21:21:18,506 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:21:18,664 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:21:18,665 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-12-05 21:21:18,671 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692727c89/04145e52869d416a8469dccf99a24ffb/FLAG9ac623ea7 [2023-12-05 21:21:18,685 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/692727c89/04145e52869d416a8469dccf99a24ffb [2023-12-05 21:21:18,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:21:18,688 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:21:18,689 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:21:18,689 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:21:18,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:21:18,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:21:18" (1/1) ... [2023-12-05 21:21:18,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20eb929a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18, skipping insertion in model container [2023-12-05 21:21:18,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:21:18" (1/1) ... [2023-12-05 21:21:18,711 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:21:18,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:21:18,838 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:21:18,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:21:18,871 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:21:18,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18 WrapperNode [2023-12-05 21:21:18,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:21:18,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:21:18,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:21:18,872 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:21:18,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18" (1/1) ... [2023-12-05 21:21:18,883 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18" (1/1) ... [2023-12-05 21:21:18,899 INFO L138 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2023-12-05 21:21:18,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:21:18,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:21:18,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:21:18,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:21:18,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18" (1/1) ... [2023-12-05 21:21:18,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18" (1/1) ... [2023-12-05 21:21:18,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18" (1/1) ... [2023-12-05 21:21:18,911 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18" (1/1) ... [2023-12-05 21:21:18,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18" (1/1) ... [2023-12-05 21:21:18,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18" (1/1) ... [2023-12-05 21:21:18,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18" (1/1) ... [2023-12-05 21:21:18,926 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18" (1/1) ... [2023-12-05 21:21:18,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:21:18,928 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:21:18,928 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:21:18,928 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:21:18,929 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18" (1/1) ... [2023-12-05 21:21:18,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:21:18,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:21:18,960 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) [2023-12-05 21:21:18,962 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 [2023-12-05 21:21:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:21:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-05 21:21:18,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-05 21:21:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-05 21:21:18,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-05 21:21:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:21:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:21:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:21:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:21:18,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:21:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:21:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:21:18,981 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:21:19,066 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:21:19,069 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:21:19,239 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:21:19,249 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:21:19,249 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-05 21:21:19,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:21:19 BoogieIcfgContainer [2023-12-05 21:21:19,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:21:19,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:21:19,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:21:19,255 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:21:19,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:21:18" (1/3) ... [2023-12-05 21:21:19,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6685540a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:21:19, skipping insertion in model container [2023-12-05 21:21:19,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:18" (2/3) ... [2023-12-05 21:21:19,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6685540a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:21:19, skipping insertion in model container [2023-12-05 21:21:19,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:21:19" (3/3) ... [2023-12-05 21:21:19,264 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2023-12-05 21:21:19,280 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:21:19,281 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-05 21:21:19,281 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:21:19,353 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-05 21:21:19,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions, 202 flow [2023-12-05 21:21:19,452 INFO L124 PetriNetUnfolderBase]: 6/92 cut-off events. [2023-12-05 21:21:19,452 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-05 21:21:19,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 6/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-12-05 21:21:19,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 94 transitions, 202 flow [2023-12-05 21:21:19,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 70 transitions, 149 flow [2023-12-05 21:21:19,473 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:21:19,478 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;@44f5d22e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:21:19,479 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-12-05 21:21:19,488 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:21:19,488 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2023-12-05 21:21:19,488 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:21:19,490 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:19,490 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] [2023-12-05 21:21:19,491 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:21:19,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:19,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1967177281, now seen corresponding path program 1 times [2023-12-05 21:21:19,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:19,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486396582] [2023-12-05 21:21:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:19,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:21:19,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:19,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486396582] [2023-12-05 21:21:19,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486396582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:19,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:19,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:21:19,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121891738] [2023-12-05 21:21:19,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:19,917 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:21:19,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:19,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:21:19,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:21:19,950 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 94 [2023-12-05 21:21:19,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2023-12-05 21:21:19,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:19,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 94 [2023-12-05 21:21:19,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:19,997 INFO L124 PetriNetUnfolderBase]: 2/65 cut-off events. [2023-12-05 21:21:19,997 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-05 21:21:19,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 65 events. 2/65 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 13/71 useless extension candidates. Maximal degree in co-relation 60. Up to 13 conditions per place. [2023-12-05 21:21:19,999 INFO L140 encePairwiseOnDemand]: 88/94 looper letters, 16 selfloop transitions, 1 changer transitions 1/65 dead transitions. [2023-12-05 21:21:20,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 173 flow [2023-12-05 21:21:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:21:20,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:21:20,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-12-05 21:21:20,010 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7695035460992907 [2023-12-05 21:21:20,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-12-05 21:21:20,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-12-05 21:21:20,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:20,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-12-05 21:21:20,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2023-12-05 21:21:20,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2023-12-05 21:21:20,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2023-12-05 21:21:20,024 INFO L308 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-12-05 21:21:20,024 INFO L500 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 173 flow [2023-12-05 21:21:20,025 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2023-12-05 21:21:20,025 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:20,025 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] [2023-12-05 21:21:20,025 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:21:20,026 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:21:20,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:20,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1967177282, now seen corresponding path program 1 times [2023-12-05 21:21:20,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:20,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099664923] [2023-12-05 21:21:20,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:20,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:21:20,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:20,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099664923] [2023-12-05 21:21:20,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099664923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:20,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:20,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 21:21:20,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896774603] [2023-12-05 21:21:20,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:20,282 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 21:21:20,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:20,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 21:21:20,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-05 21:21:20,284 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2023-12-05 21:21:20,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:21:20,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:20,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2023-12-05 21:21:20,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:20,348 INFO L124 PetriNetUnfolderBase]: 2/63 cut-off events. [2023-12-05 21:21:20,348 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-12-05 21:21:20,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 63 events. 2/63 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 69. Up to 13 conditions per place. [2023-12-05 21:21:20,351 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 16 selfloop transitions, 1 changer transitions 1/63 dead transitions. [2023-12-05 21:21:20,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 63 transitions, 199 flow [2023-12-05 21:21:20,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:21:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:21:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-12-05 21:21:20,358 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7375886524822695 [2023-12-05 21:21:20,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-12-05 21:21:20,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-12-05 21:21:20,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:20,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-12-05 21:21:20,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2023-12-05 21:21:20,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2023-12-05 21:21:20,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2023-12-05 21:21:20,367 INFO L308 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-12-05 21:21:20,367 INFO L500 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 199 flow [2023-12-05 21:21:20,367 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:21:20,367 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:20,368 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] [2023-12-05 21:21:20,368 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:21:20,368 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:21:20,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:20,370 INFO L85 PathProgramCache]: Analyzing trace with hash 930589719, now seen corresponding path program 1 times [2023-12-05 21:21:20,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:20,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48144979] [2023-12-05 21:21:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:20,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:21:20,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:20,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48144979] [2023-12-05 21:21:20,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48144979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:20,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:20,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:21:20,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044649638] [2023-12-05 21:21:20,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:20,512 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:21:20,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:20,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:21:20,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:21:20,516 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 94 [2023-12-05 21:21:20,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2023-12-05 21:21:20,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:20,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 94 [2023-12-05 21:21:20,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:20,572 INFO L124 PetriNetUnfolderBase]: 2/61 cut-off events. [2023-12-05 21:21:20,573 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-12-05 21:21:20,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 61 events. 2/61 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 2/58 useless extension candidates. Maximal degree in co-relation 76. Up to 11 conditions per place. [2023-12-05 21:21:20,575 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 13 selfloop transitions, 1 changer transitions 1/61 dead transitions. [2023-12-05 21:21:20,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 61 transitions, 219 flow [2023-12-05 21:21:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:21:20,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:21:20,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-12-05 21:21:20,578 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7695035460992907 [2023-12-05 21:21:20,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-12-05 21:21:20,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-12-05 21:21:20,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:20,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-12-05 21:21:20,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2023-12-05 21:21:20,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2023-12-05 21:21:20,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2023-12-05 21:21:20,583 INFO L308 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-12-05 21:21:20,583 INFO L500 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 219 flow [2023-12-05 21:21:20,583 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2023-12-05 21:21:20,583 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:20,584 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] [2023-12-05 21:21:20,585 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:21:20,585 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:21:20,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:20,586 INFO L85 PathProgramCache]: Analyzing trace with hash 930589718, now seen corresponding path program 1 times [2023-12-05 21:21:20,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:20,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658505176] [2023-12-05 21:21:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:20,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:21:20,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:20,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658505176] [2023-12-05 21:21:20,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658505176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:20,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:20,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:21:20,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538826271] [2023-12-05 21:21:20,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:20,662 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:21:20,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:21:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:21:20,667 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 94 [2023-12-05 21:21:20,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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) [2023-12-05 21:21:20,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:20,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 94 [2023-12-05 21:21:20,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:20,705 INFO L124 PetriNetUnfolderBase]: 2/59 cut-off events. [2023-12-05 21:21:20,706 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-12-05 21:21:20,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 59 events. 2/59 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 81. Up to 9 conditions per place. [2023-12-05 21:21:20,709 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2023-12-05 21:21:20,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 229 flow [2023-12-05 21:21:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:21:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:21:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2023-12-05 21:21:20,711 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7446808510638298 [2023-12-05 21:21:20,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 210 transitions. [2023-12-05 21:21:20,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 210 transitions. [2023-12-05 21:21:20,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:20,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 210 transitions. [2023-12-05 21:21:20,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2023-12-05 21:21:20,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2023-12-05 21:21:20,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2023-12-05 21:21:20,715 INFO L308 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-12-05 21:21:20,716 INFO L500 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 229 flow [2023-12-05 21:21:20,716 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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) [2023-12-05 21:21:20,726 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/test-easy1.wvr.c_BEv2_AllErrorsAtOnce [2023-12-05 21:21:20,743 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-12-05 21:21:20,744 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-12-05 21:21:20,744 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-12-05 21:21:20,744 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-12-05 21:21:20,744 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-12-05 21:21:20,745 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-12-05 21:21:20,745 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-12-05 21:21:20,745 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-12-05 21:21:20,745 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-12-05 21:21:20,745 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-12-05 21:21:20,746 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:21:20,746 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-05 21:21:20,749 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:21:20,749 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:21:20,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:21:20 BasicIcfg [2023-12-05 21:21:20,755 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:21:20,756 INFO L158 Benchmark]: Toolchain (without parser) took 2067.99ms. Allocated memory is still 231.7MB. Free memory was 185.8MB in the beginning and 104.8MB in the end (delta: 81.0MB). Peak memory consumption was 81.7MB. Max. memory is 8.0GB. [2023-12-05 21:21:20,756 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 231.7MB. Free memory is still 188.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:21:20,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.51ms. Allocated memory is still 231.7MB. Free memory was 185.8MB in the beginning and 175.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-05 21:21:20,757 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.56ms. Allocated memory is still 231.7MB. Free memory was 175.0MB in the beginning and 173.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:21:20,757 INFO L158 Benchmark]: Boogie Preprocessor took 27.33ms. Allocated memory is still 231.7MB. Free memory was 173.2MB in the beginning and 172.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-05 21:21:20,758 INFO L158 Benchmark]: RCFGBuilder took 322.84ms. Allocated memory is still 231.7MB. Free memory was 171.9MB in the beginning and 158.6MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-05 21:21:20,758 INFO L158 Benchmark]: TraceAbstraction took 1502.67ms. Allocated memory is still 231.7MB. Free memory was 157.9MB in the beginning and 104.8MB in the end (delta: 53.0MB). Peak memory consumption was 53.4MB. Max. memory is 8.0GB. [2023-12-05 21:21:20,760 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 231.7MB. Free memory is still 188.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 182.51ms. Allocated memory is still 231.7MB. Free memory was 185.8MB in the beginning and 175.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.56ms. Allocated memory is still 231.7MB. Free memory was 175.0MB in the beginning and 173.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.33ms. Allocated memory is still 231.7MB. Free memory was 173.2MB in the beginning and 172.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 322.84ms. Allocated memory is still 231.7MB. Free memory was 171.9MB in the beginning and 158.6MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1502.67ms. Allocated memory is still 231.7MB. Free memory was 157.9MB in the beginning and 104.8MB in the end (delta: 53.0MB). Peak memory consumption was 53.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 21 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=229occurred in iteration=4, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 621 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:21:20,776 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...