/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/pthread-wmm/safe012_pso.oepc_pso.opt_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:09:16,511 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:09:16,591 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 21:09:16,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:09:16,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:09:16,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:09:16,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:09:16,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:09:16,617 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:09:16,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:09:16,618 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:09:16,618 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:09:16,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:09:16,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:09:16,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:09:16,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:09:16,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:09:16,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:09:16,619 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:09:16,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:09:16,620 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:09:16,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:09:16,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:09:16,621 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:09:16,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:09:16,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:09:16,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:09:16,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:09:16,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:09:16,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:09:16,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:09:16,623 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:09:16,623 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:09:16,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:09:16,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:09:16,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:09:16,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:09:16,796 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:09:16,797 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:09:16,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_pso.oepc_pso.opt_rmo.opt.i [2023-12-05 21:09:17,878 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:09:18,064 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:09:18,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_pso.oepc_pso.opt_rmo.opt.i [2023-12-05 21:09:18,080 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0735a1ac/f170c677f7b046a5be87afbbf9649648/FLAG4da92fde4 [2023-12-05 21:09:18,090 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0735a1ac/f170c677f7b046a5be87afbbf9649648 [2023-12-05 21:09:18,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:09:18,093 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:09:18,094 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:09:18,094 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:09:18,098 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:09:18,099 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:09:18" (1/1) ... [2023-12-05 21:09:18,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b2cb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18, skipping insertion in model container [2023-12-05 21:09:18,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:09:18" (1/1) ... [2023-12-05 21:09:18,130 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:09:18,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:09:18,380 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:09:18,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:09:18,477 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:09:18,477 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:09:18,483 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:09:18,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18 WrapperNode [2023-12-05 21:09:18,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:09:18,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:09:18,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:09:18,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:09:18,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18" (1/1) ... [2023-12-05 21:09:18,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18" (1/1) ... [2023-12-05 21:09:18,546 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 134 [2023-12-05 21:09:18,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:09:18,547 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:09:18,547 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:09:18,547 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:09:18,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18" (1/1) ... [2023-12-05 21:09:18,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18" (1/1) ... [2023-12-05 21:09:18,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18" (1/1) ... [2023-12-05 21:09:18,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18" (1/1) ... [2023-12-05 21:09:18,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18" (1/1) ... [2023-12-05 21:09:18,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18" (1/1) ... [2023-12-05 21:09:18,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18" (1/1) ... [2023-12-05 21:09:18,577 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18" (1/1) ... [2023-12-05 21:09:18,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:09:18,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:09:18,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:09:18,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:09:18,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18" (1/1) ... [2023-12-05 21:09:18,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:09:18,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:09:18,631 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 21:09:18,655 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 21:09:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:09:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:09:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:09:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:09:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:09:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:09:18,661 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:09:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:09:18,661 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:09:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:09:18,661 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:09:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:09:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:09:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:09:18,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:09:18,663 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 21:09:18,768 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:09:18,770 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:09:19,206 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:09:19,323 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:09:19,323 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:09:19,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:09:19 BoogieIcfgContainer [2023-12-05 21:09:19,325 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:09:19,326 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:09:19,327 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:09:19,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:09:19,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:09:18" (1/3) ... [2023-12-05 21:09:19,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a18684a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:09:19, skipping insertion in model container [2023-12-05 21:09:19,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:18" (2/3) ... [2023-12-05 21:09:19,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a18684a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:09:19, skipping insertion in model container [2023-12-05 21:09:19,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:09:19" (3/3) ... [2023-12-05 21:09:19,333 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_pso.oepc_pso.opt_rmo.opt.i [2023-12-05 21:09:19,347 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:09:19,348 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:09:19,348 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:09:19,385 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:09:19,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 121 transitions, 254 flow [2023-12-05 21:09:19,471 INFO L124 PetriNetUnfolderBase]: 3/118 cut-off events. [2023-12-05 21:09:19,471 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:09:19,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 118 events. 3/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-12-05 21:09:19,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 121 transitions, 254 flow [2023-12-05 21:09:19,481 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 72 transitions, 150 flow [2023-12-05 21:09:19,494 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:09:19,502 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;@60d47819, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:09:19,503 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:09:19,513 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:09:19,514 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2023-12-05 21:09:19,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:09:19,514 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:19,514 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:09:19,515 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:19,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:19,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1369318438, now seen corresponding path program 1 times [2023-12-05 21:09:19,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:19,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417769338] [2023-12-05 21:09:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:19,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:19,928 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 21:09:19,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:19,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417769338] [2023-12-05 21:09:19,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417769338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:19,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:19,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:19,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514943254] [2023-12-05 21:09:19,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:19,938 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:19,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:19,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:19,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:19,968 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 121 [2023-12-05 21:09:19,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 21:09:19,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:19,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 121 [2023-12-05 21:09:19,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:20,041 INFO L124 PetriNetUnfolderBase]: 20/136 cut-off events. [2023-12-05 21:09:20,041 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:09:20,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 136 events. 20/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 333 event pairs, 20 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 144. Up to 49 conditions per place. [2023-12-05 21:09:20,043 INFO L140 encePairwiseOnDemand]: 119/121 looper letters, 16 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-12-05 21:09:20,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 182 flow [2023-12-05 21:09:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:20,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-12-05 21:09:20,055 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7933884297520661 [2023-12-05 21:09:20,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-12-05 21:09:20,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-12-05 21:09:20,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:20,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-12-05 21:09:20,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 21:09:20,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:20,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:20,071 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2023-12-05 21:09:20,071 INFO L500 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 182 flow [2023-12-05 21:09:20,071 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 21:09:20,071 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:20,071 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:09:20,072 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:09:20,072 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:20,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:20,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1369318439, now seen corresponding path program 1 times [2023-12-05 21:09:20,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:20,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473635229] [2023-12-05 21:09:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:20,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:20,190 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 21:09:20,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:20,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473635229] [2023-12-05 21:09:20,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473635229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:20,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:20,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:20,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736142283] [2023-12-05 21:09:20,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:20,192 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:20,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:20,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:20,193 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 121 [2023-12-05 21:09:20,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 21:09:20,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:20,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 121 [2023-12-05 21:09:20,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:20,248 INFO L124 PetriNetUnfolderBase]: 28/155 cut-off events. [2023-12-05 21:09:20,248 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-12-05 21:09:20,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 155 events. 28/155 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 436 event pairs, 28 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 225. Up to 56 conditions per place. [2023-12-05 21:09:20,250 INFO L140 encePairwiseOnDemand]: 119/121 looper letters, 14 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-12-05 21:09:20,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 70 transitions, 208 flow [2023-12-05 21:09:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-12-05 21:09:20,255 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8126721763085399 [2023-12-05 21:09:20,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-12-05 21:09:20,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-12-05 21:09:20,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:20,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-12-05 21:09:20,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 21:09:20,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:20,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:20,258 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2023-12-05 21:09:20,258 INFO L500 AbstractCegarLoop]: Abstraction has has 81 places, 70 transitions, 208 flow [2023-12-05 21:09:20,258 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 21:09:20,259 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:20,259 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:09:20,259 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:09:20,259 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:20,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1995611755, now seen corresponding path program 1 times [2023-12-05 21:09:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:20,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45037833] [2023-12-05 21:09:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:20,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:20,346 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 21:09:20,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:20,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45037833] [2023-12-05 21:09:20,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45037833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:20,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:20,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:20,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640008347] [2023-12-05 21:09:20,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:20,352 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:20,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:20,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:20,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:20,353 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 121 [2023-12-05 21:09:20,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 70 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 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) [2023-12-05 21:09:20,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:20,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 121 [2023-12-05 21:09:20,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:20,417 INFO L124 PetriNetUnfolderBase]: 27/152 cut-off events. [2023-12-05 21:09:20,417 INFO L125 PetriNetUnfolderBase]: For 81/85 co-relation queries the response was YES. [2023-12-05 21:09:20,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 152 events. 27/152 cut-off events. For 81/85 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 414 event pairs, 12 based on Foata normal form. 2/150 useless extension candidates. Maximal degree in co-relation 270. Up to 55 conditions per place. [2023-12-05 21:09:20,420 INFO L140 encePairwiseOnDemand]: 119/121 looper letters, 16 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-12-05 21:09:20,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 244 flow [2023-12-05 21:09:20,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-12-05 21:09:20,421 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7933884297520661 [2023-12-05 21:09:20,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-12-05 21:09:20,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-12-05 21:09:20,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:20,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-12-05 21:09:20,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 21:09:20,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:20,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:20,424 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2023-12-05 21:09:20,425 INFO L500 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 244 flow [2023-12-05 21:09:20,425 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 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) [2023-12-05 21:09:20,425 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:20,425 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:09:20,425 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:09:20,425 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:20,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:20,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1995611756, now seen corresponding path program 1 times [2023-12-05 21:09:20,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:20,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947407309] [2023-12-05 21:09:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:20,540 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 21:09:20,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:20,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947407309] [2023-12-05 21:09:20,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947407309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:20,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:20,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:20,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400217792] [2023-12-05 21:09:20,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:20,541 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:20,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:20,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:20,542 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 121 [2023-12-05 21:09:20,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 21:09:20,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:20,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 121 [2023-12-05 21:09:20,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:20,590 INFO L124 PetriNetUnfolderBase]: 26/149 cut-off events. [2023-12-05 21:09:20,590 INFO L125 PetriNetUnfolderBase]: For 152/160 co-relation queries the response was YES. [2023-12-05 21:09:20,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 149 events. 26/149 cut-off events. For 152/160 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 401 event pairs, 12 based on Foata normal form. 2/147 useless extension candidates. Maximal degree in co-relation 309. Up to 52 conditions per place. [2023-12-05 21:09:20,594 INFO L140 encePairwiseOnDemand]: 119/121 looper letters, 14 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-12-05 21:09:20,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 69 transitions, 268 flow [2023-12-05 21:09:20,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:20,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-12-05 21:09:20,595 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8126721763085399 [2023-12-05 21:09:20,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-12-05 21:09:20,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-12-05 21:09:20,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:20,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-12-05 21:09:20,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 21:09:20,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:20,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:20,600 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 4 predicate places. [2023-12-05 21:09:20,600 INFO L500 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 268 flow [2023-12-05 21:09:20,600 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 21:09:20,600 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:20,600 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:09:20,600 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:09:20,600 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:20,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:20,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1465290432, now seen corresponding path program 1 times [2023-12-05 21:09:20,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:20,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833516951] [2023-12-05 21:09:20,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:20,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:20,685 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 21:09:20,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:20,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833516951] [2023-12-05 21:09:20,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833516951] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:20,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:20,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:20,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132437802] [2023-12-05 21:09:20,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:20,686 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:20,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:20,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:20,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:20,688 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 121 [2023-12-05 21:09:20,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 21:09:20,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:20,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 121 [2023-12-05 21:09:20,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:20,729 INFO L124 PetriNetUnfolderBase]: 19/120 cut-off events. [2023-12-05 21:09:20,730 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2023-12-05 21:09:20,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 120 events. 19/120 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 251 event pairs, 0 based on Foata normal form. 6/126 useless extension candidates. Maximal degree in co-relation 282. Up to 45 conditions per place. [2023-12-05 21:09:20,730 INFO L140 encePairwiseOnDemand]: 119/121 looper letters, 18 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-12-05 21:09:20,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 71 transitions, 330 flow [2023-12-05 21:09:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-12-05 21:09:20,732 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7961432506887053 [2023-12-05 21:09:20,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-12-05 21:09:20,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-12-05 21:09:20,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:20,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-12-05 21:09:20,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 21:09:20,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:20,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:20,736 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2023-12-05 21:09:20,736 INFO L500 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 330 flow [2023-12-05 21:09:20,736 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 21:09:20,736 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:20,737 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:09:20,737 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:09:20,737 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:20,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1465290431, now seen corresponding path program 1 times [2023-12-05 21:09:20,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:20,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259834893] [2023-12-05 21:09:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:20,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:20,839 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 21:09:20,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:20,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259834893] [2023-12-05 21:09:20,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259834893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:20,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:20,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:20,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603926210] [2023-12-05 21:09:20,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:20,841 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:20,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:20,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:20,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:20,842 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 121 [2023-12-05 21:09:20,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 21:09:20,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:20,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 121 [2023-12-05 21:09:20,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:20,874 INFO L124 PetriNetUnfolderBase]: 12/107 cut-off events. [2023-12-05 21:09:20,875 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2023-12-05 21:09:20,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 107 events. 12/107 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 195 event pairs, 0 based on Foata normal form. 6/113 useless extension candidates. Maximal degree in co-relation 245. Up to 32 conditions per place. [2023-12-05 21:09:20,875 INFO L140 encePairwiseOnDemand]: 119/121 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2023-12-05 21:09:20,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 70 transitions, 356 flow [2023-12-05 21:09:20,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:20,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:20,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-12-05 21:09:20,876 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8154269972451791 [2023-12-05 21:09:20,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-12-05 21:09:20,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-12-05 21:09:20,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:20,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-12-05 21:09:20,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 21:09:20,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:20,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:20,880 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 6 predicate places. [2023-12-05 21:09:20,880 INFO L500 AbstractCegarLoop]: Abstraction has has 85 places, 70 transitions, 356 flow [2023-12-05 21:09:20,881 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 21:09:20,888 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe012_pso.oepc_pso.opt_rmo.opt.i_BEv2_AllErrorsAtOnce [2023-12-05 21:09:20,924 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:09:20,925 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:09:20,925 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:09:20,925 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:09:20,925 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-12-05 21:09:20,925 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:09:20,926 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-12-05 21:09:20,926 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-12-05 21:09:20,926 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-12-05 21:09:20,926 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:09:20,926 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:09:20,929 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:09:20,929 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:09:20,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:09:20 BasicIcfg [2023-12-05 21:09:20,935 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:09:20,939 INFO L158 Benchmark]: Toolchain (without parser) took 2842.12ms. Allocated memory was 181.4MB in the beginning and 218.1MB in the end (delta: 36.7MB). Free memory was 112.3MB in the beginning and 126.4MB in the end (delta: -14.1MB). Peak memory consumption was 23.5MB. Max. memory is 8.0GB. [2023-12-05 21:09:20,941 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 132.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:09:20,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.65ms. Allocated memory was 181.4MB in the beginning and 218.1MB in the end (delta: 36.7MB). Free memory was 112.1MB in the beginning and 170.8MB in the end (delta: -58.7MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2023-12-05 21:09:20,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.46ms. Allocated memory is still 218.1MB. Free memory was 170.3MB in the beginning and 168.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:09:20,941 INFO L158 Benchmark]: Boogie Preprocessor took 32.17ms. Allocated memory is still 218.1MB. Free memory was 168.2MB in the beginning and 166.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:09:20,942 INFO L158 Benchmark]: RCFGBuilder took 729.32ms. Allocated memory is still 218.1MB. Free memory was 166.1MB in the beginning and 130.5MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-05 21:09:20,942 INFO L158 Benchmark]: TraceAbstraction took 1608.11ms. Allocated memory is still 218.1MB. Free memory was 129.4MB in the beginning and 126.4MB in the end (delta: 3.0MB). Peak memory consumption was 3.0MB. Max. memory is 8.0GB. [2023-12-05 21:09:20,943 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 132.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 389.65ms. Allocated memory was 181.4MB in the beginning and 218.1MB in the end (delta: 36.7MB). Free memory was 112.1MB in the beginning and 170.8MB in the end (delta: -58.7MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.46ms. Allocated memory is still 218.1MB. Free memory was 170.3MB in the beginning and 168.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.17ms. Allocated memory is still 218.1MB. Free memory was 168.2MB in the beginning and 166.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 729.32ms. Allocated memory is still 218.1MB. Free memory was 166.1MB in the beginning and 130.5MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1608.11ms. Allocated memory is still 218.1MB. Free memory was 129.4MB in the beginning and 126.4MB in the end (delta: 3.0MB). Peak memory consumption was 3.0MB. 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 146 locations, 9 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: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=356occurred in iteration=6, InterpolantAutomatonStates: 18, 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, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 270 ConstructedInterpolants, 0 QuantifiedInterpolants, 378 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:09:20,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...