/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -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/popl20-figure1-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 05:38:35,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 05:38:35,294 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 [2023-11-30 05:38:35,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 05:38:35,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 05:38:35,319 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 05:38:35,320 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 05:38:35,320 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 05:38:35,320 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 05:38:35,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 05:38:35,323 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 05:38:35,324 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 05:38:35,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 05:38:35,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 05:38:35,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 05:38:35,325 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 05:38:35,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 05:38:35,325 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 05:38:35,325 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 05:38:35,325 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 05:38:35,326 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 05:38:35,326 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 05:38:35,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 05:38:35,326 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 05:38:35,327 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 05:38:35,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:38:35,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 05:38:35,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 05:38:35,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 05:38:35,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 05:38:35,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 05:38:35,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 05:38:35,329 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 05:38:35,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 05:38:35,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 05:38:35,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 05:38:35,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 05:38:35,522 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 05:38:35,523 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 05:38:35,523 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-11-30 05:38:36,404 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 05:38:36,563 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 05:38:36,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-11-30 05:38:36,568 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62233912/1c208329c3f9403f89b4459f5b94a5ab/FLAG8a98db0bc [2023-11-30 05:38:36,576 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62233912/1c208329c3f9403f89b4459f5b94a5ab [2023-11-30 05:38:36,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 05:38:36,578 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 05:38:36,580 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 05:38:36,580 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 05:38:36,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 05:38:36,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:38:36" (1/1) ... [2023-11-30 05:38:36,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403d8ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36, skipping insertion in model container [2023-11-30 05:38:36,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:38:36" (1/1) ... [2023-11-30 05:38:36,605 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 05:38:36,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:38:36,721 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 05:38:36,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:38:36,740 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:38:36,740 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:38:36,745 INFO L206 MainTranslator]: Completed translation [2023-11-30 05:38:36,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36 WrapperNode [2023-11-30 05:38:36,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 05:38:36,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 05:38:36,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 05:38:36,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 05:38:36,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36" (1/1) ... [2023-11-30 05:38:36,762 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36" (1/1) ... [2023-11-30 05:38:36,774 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 81 [2023-11-30 05:38:36,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 05:38:36,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 05:38:36,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 05:38:36,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 05:38:36,780 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36" (1/1) ... [2023-11-30 05:38:36,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36" (1/1) ... [2023-11-30 05:38:36,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36" (1/1) ... [2023-11-30 05:38:36,781 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36" (1/1) ... [2023-11-30 05:38:36,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36" (1/1) ... [2023-11-30 05:38:36,788 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36" (1/1) ... [2023-11-30 05:38:36,789 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36" (1/1) ... [2023-11-30 05:38:36,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36" (1/1) ... [2023-11-30 05:38:36,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 05:38:36,791 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 05:38:36,791 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 05:38:36,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 05:38:36,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36" (1/1) ... [2023-11-30 05:38:36,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:38:36,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:38:36,809 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) [2023-11-30 05:38:36,811 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 [2023-11-30 05:38:36,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 05:38:36,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 05:38:36,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 05:38:36,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 05:38:36,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 05:38:36,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 05:38:36,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 05:38:36,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 05:38:36,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 05:38:36,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 05:38:36,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 05:38:36,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 05:38:36,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 05:38:36,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 05:38:36,830 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 05:38:36,899 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 05:38:36,901 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 05:38:37,080 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 05:38:37,108 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 05:38:37,108 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-30 05:38:37,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:38:37 BoogieIcfgContainer [2023-11-30 05:38:37,109 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 05:38:37,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 05:38:37,111 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 05:38:37,113 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 05:38:37,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 05:38:36" (1/3) ... [2023-11-30 05:38:37,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625acdb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:38:37, skipping insertion in model container [2023-11-30 05:38:37,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:36" (2/3) ... [2023-11-30 05:38:37,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625acdb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:38:37, skipping insertion in model container [2023-11-30 05:38:37,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:38:37" (3/3) ... [2023-11-30 05:38:37,114 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2023-11-30 05:38:37,132 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 05:38:37,132 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-30 05:38:37,132 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 05:38:37,173 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 05:38:37,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 101 transitions, 216 flow [2023-11-30 05:38:37,225 INFO L124 PetriNetUnfolderBase]: 6/99 cut-off events. [2023-11-30 05:38:37,225 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 05:38:37,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 6/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2023-11-30 05:38:37,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 101 transitions, 216 flow [2023-11-30 05:38:37,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 77 transitions, 163 flow [2023-11-30 05:38:37,237 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 05:38:37,242 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;@5215242d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 05:38:37,242 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-30 05:38:37,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 05:38:37,258 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2023-11-30 05:38:37,261 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 05:38:37,261 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:38:37,262 INFO L232 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] [2023-11-30 05:38:37,262 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)] === [2023-11-30 05:38:37,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:38:37,266 INFO L85 PathProgramCache]: Analyzing trace with hash -627941130, now seen corresponding path program 1 times [2023-11-30 05:38:37,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:38:37,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521001040] [2023-11-30 05:38:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:38:37,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:38:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:38:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:38:37,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:38:37,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521001040] [2023-11-30 05:38:37,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521001040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:38:37,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:38:37,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:38:37,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384677920] [2023-11-30 05:38:37,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:38:37,516 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:38:37,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:38:37,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:38:37,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:38:37,542 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 101 [2023-11-30 05:38:37,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 163 flow. Second operand has 3 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) [2023-11-30 05:38:37,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:38:37,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 101 [2023-11-30 05:38:37,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:38:37,601 INFO L124 PetriNetUnfolderBase]: 28/140 cut-off events. [2023-11-30 05:38:37,601 INFO L125 PetriNetUnfolderBase]: For 11/15 co-relation queries the response was YES. [2023-11-30 05:38:37,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 140 events. 28/140 cut-off events. For 11/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 406 event pairs, 15 based on Foata normal form. 26/145 useless extension candidates. Maximal degree in co-relation 133. Up to 53 conditions per place. [2023-11-30 05:38:37,603 INFO L140 encePairwiseOnDemand]: 95/101 looper letters, 18 selfloop transitions, 1 changer transitions 1/72 dead transitions. [2023-11-30 05:38:37,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 191 flow [2023-11-30 05:38:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:38:37,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:38:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2023-11-30 05:38:37,618 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7722772277227723 [2023-11-30 05:38:37,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2023-11-30 05:38:37,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2023-11-30 05:38:37,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:38:37,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2023-11-30 05:38:37,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2023-11-30 05:38:37,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2023-11-30 05:38:37,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2023-11-30 05:38:37,631 INFO L307 CegarLoopForPetriNet]: 79 programPoint places, 0 predicate places. [2023-11-30 05:38:37,632 INFO L500 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 191 flow [2023-11-30 05:38:37,632 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-30 05:38:37,632 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:38:37,632 INFO L232 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] [2023-11-30 05:38:37,632 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 05:38:37,633 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)] === [2023-11-30 05:38:37,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:38:37,634 INFO L85 PathProgramCache]: Analyzing trace with hash -627941129, now seen corresponding path program 1 times [2023-11-30 05:38:37,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:38:37,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57846292] [2023-11-30 05:38:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:38:37,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:38:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:38:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:38:37,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:38:37,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57846292] [2023-11-30 05:38:37,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57846292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:38:37,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:38:37,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:38:37,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820297416] [2023-11-30 05:38:37,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:38:37,769 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:38:37,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:38:37,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:38:37,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:38:37,770 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 101 [2023-11-30 05:38:37,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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) [2023-11-30 05:38:37,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:38:37,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 101 [2023-11-30 05:38:37,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:38:37,843 INFO L124 PetriNetUnfolderBase]: 25/141 cut-off events. [2023-11-30 05:38:37,843 INFO L125 PetriNetUnfolderBase]: For 40/63 co-relation queries the response was YES. [2023-11-30 05:38:37,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 141 events. 25/141 cut-off events. For 40/63 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 425 event pairs, 13 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 157. Up to 49 conditions per place. [2023-11-30 05:38:37,845 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 18 selfloop transitions, 1 changer transitions 1/70 dead transitions. [2023-11-30 05:38:37,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 221 flow [2023-11-30 05:38:37,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:38:37,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:38:37,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-11-30 05:38:37,846 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7425742574257426 [2023-11-30 05:38:37,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-11-30 05:38:37,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-11-30 05:38:37,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:38:37,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-11-30 05:38:37,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2023-11-30 05:38:37,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2023-11-30 05:38:37,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2023-11-30 05:38:37,849 INFO L307 CegarLoopForPetriNet]: 79 programPoint places, 0 predicate places. [2023-11-30 05:38:37,849 INFO L500 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 221 flow [2023-11-30 05:38:37,849 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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) [2023-11-30 05:38:37,849 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:38:37,850 INFO L232 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] [2023-11-30 05:38:37,850 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 05:38:37,850 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 05:38:37,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:38:37,850 INFO L85 PathProgramCache]: Analyzing trace with hash 56345310, now seen corresponding path program 1 times [2023-11-30 05:38:37,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:38:37,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907094188] [2023-11-30 05:38:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:38:37,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:38:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:38:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:38:37,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:38:37,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907094188] [2023-11-30 05:38:37,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907094188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:38:37,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:38:37,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:38:37,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884819797] [2023-11-30 05:38:37,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:38:37,909 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:38:37,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:38:37,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:38:37,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:38:37,911 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 101 [2023-11-30 05:38:37,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2023-11-30 05:38:37,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:38:37,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 101 [2023-11-30 05:38:37,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:38:37,949 INFO L124 PetriNetUnfolderBase]: 22/126 cut-off events. [2023-11-30 05:38:37,949 INFO L125 PetriNetUnfolderBase]: For 92/137 co-relation queries the response was YES. [2023-11-30 05:38:37,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 126 events. 22/126 cut-off events. For 92/137 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 331 event pairs, 11 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 164. Up to 42 conditions per place. [2023-11-30 05:38:37,950 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 16 selfloop transitions, 1 changer transitions 1/68 dead transitions. [2023-11-30 05:38:37,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 68 transitions, 243 flow [2023-11-30 05:38:37,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:38:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:38:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-11-30 05:38:37,952 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7557755775577558 [2023-11-30 05:38:37,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-11-30 05:38:37,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-11-30 05:38:37,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:38:37,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-11-30 05:38:37,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-11-30 05:38:37,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2023-11-30 05:38:37,954 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2023-11-30 05:38:37,954 INFO L307 CegarLoopForPetriNet]: 79 programPoint places, 0 predicate places. [2023-11-30 05:38:37,954 INFO L500 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 243 flow [2023-11-30 05:38:37,955 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2023-11-30 05:38:37,955 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:38:37,955 INFO L232 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] [2023-11-30 05:38:37,955 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 05:38:37,955 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 05:38:37,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:38:37,956 INFO L85 PathProgramCache]: Analyzing trace with hash 56345311, now seen corresponding path program 1 times [2023-11-30 05:38:37,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:38:37,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541112804] [2023-11-30 05:38:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:38:37,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:38:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:38:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:38:38,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:38:38,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541112804] [2023-11-30 05:38:38,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541112804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:38:38,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:38:38,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:38:38,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883232765] [2023-11-30 05:38:38,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:38:38,019 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:38:38,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:38:38,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:38:38,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:38:38,020 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 101 [2023-11-30 05:38:38,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2023-11-30 05:38:38,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:38:38,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 101 [2023-11-30 05:38:38,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:38:38,044 INFO L124 PetriNetUnfolderBase]: 19/111 cut-off events. [2023-11-30 05:38:38,044 INFO L125 PetriNetUnfolderBase]: For 163/230 co-relation queries the response was YES. [2023-11-30 05:38:38,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 111 events. 19/111 cut-off events. For 163/230 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 240 event pairs, 9 based on Foata normal form. 3/105 useless extension candidates. Maximal degree in co-relation 165. Up to 35 conditions per place. [2023-11-30 05:38:38,045 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2023-11-30 05:38:38,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 259 flow [2023-11-30 05:38:38,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:38:38,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:38:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-11-30 05:38:38,047 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7656765676567657 [2023-11-30 05:38:38,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-11-30 05:38:38,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-11-30 05:38:38,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:38:38,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-11-30 05:38:38,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2023-11-30 05:38:38,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2023-11-30 05:38:38,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2023-11-30 05:38:38,049 INFO L307 CegarLoopForPetriNet]: 79 programPoint places, 0 predicate places. [2023-11-30 05:38:38,049 INFO L500 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 259 flow [2023-11-30 05:38:38,050 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2023-11-30 05:38:38,054 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/popl20-figure1-alt.wvr.c_BEv2_AllErrorsAtOnce [2023-11-30 05:38:38,067 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-11-30 05:38:38,068 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-11-30 05:38:38,068 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-11-30 05:38:38,068 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-11-30 05:38:38,068 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-11-30 05:38:38,068 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-11-30 05:38:38,068 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-11-30 05:38:38,069 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-11-30 05:38:38,069 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-11-30 05:38:38,069 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-11-30 05:38:38,069 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 05:38:38,069 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-30 05:38:38,072 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 05:38:38,072 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 05:38:38,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 05:38:38 BasicIcfg [2023-11-30 05:38:38,076 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 05:38:38,077 INFO L158 Benchmark]: Toolchain (without parser) took 1498.15ms. Allocated memory is still 459.3MB. Free memory was 416.5MB in the beginning and 316.8MB in the end (delta: 99.7MB). Peak memory consumption was 101.4MB. Max. memory is 16.0GB. [2023-11-30 05:38:38,077 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 339.7MB. Free memory is still 292.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 05:38:38,077 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.27ms. Allocated memory is still 459.3MB. Free memory was 416.5MB in the beginning and 405.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-30 05:38:38,077 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.82ms. Allocated memory is still 459.3MB. Free memory was 405.3MB in the beginning and 403.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 05:38:38,078 INFO L158 Benchmark]: Boogie Preprocessor took 15.60ms. Allocated memory is still 459.3MB. Free memory was 403.6MB in the beginning and 402.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:38:38,078 INFO L158 Benchmark]: RCFGBuilder took 318.19ms. Allocated memory is still 459.3MB. Free memory was 402.4MB in the beginning and 386.1MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-11-30 05:38:38,078 INFO L158 Benchmark]: TraceAbstraction took 965.70ms. Allocated memory is still 459.3MB. Free memory was 385.4MB in the beginning and 316.8MB in the end (delta: 68.6MB). Peak memory consumption was 69.9MB. Max. memory is 16.0GB. [2023-11-30 05:38:38,080 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 339.7MB. Free memory is still 292.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 165.27ms. Allocated memory is still 459.3MB. Free memory was 416.5MB in the beginning and 405.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.82ms. Allocated memory is still 459.3MB. Free memory was 405.3MB in the beginning and 403.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 15.60ms. Allocated memory is still 459.3MB. Free memory was 403.6MB in the beginning and 402.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 318.19ms. Allocated memory is still 459.3MB. Free memory was 402.4MB in the beginning and 386.1MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 965.70ms. Allocated memory is still 459.3MB. Free memory was 385.4MB in the beginning and 316.8MB in the end (delta: 68.6MB). Peak memory consumption was 69.9MB. Max. memory is 16.0GB. * 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, 120 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: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 21 mSDtfsCounter, 68 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=259occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 625 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! [2023-11-30 05:38:38,096 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...