/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-difference-det.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 05:38:31,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 05:38:31,474 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 05:38:31,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 05:38:31,490 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 05:38:31,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 05:38:31,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 05:38:31,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 05:38:31,491 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 05:38:31,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 05:38:31,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 05:38:31,491 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 05:38:31,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 05:38:31,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 05:38:31,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 05:38:31,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 05:38:31,492 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 05:38:31,493 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 05:38:31,493 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 05:38:31,493 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 05:38:31,493 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 05:38:31,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 05:38:31,494 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 05:38:31,494 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 05:38:31,494 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 05:38:31,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:38:31,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 05:38:31,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 05:38:31,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 05:38:31,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 05:38:31,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 05:38:31,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 05:38:31,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 05:38:31,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 05:38:31,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 05:38:31,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 05:38:31,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 05:38:31,702 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 05:38:31,702 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 05:38:31,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2023-11-30 05:38:32,740 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 05:38:32,853 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 05:38:32,854 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2023-11-30 05:38:32,859 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9255df33e/0718f09a57554b3082ab8ab1a99f61da/FLAGc9523e516 [2023-11-30 05:38:32,868 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9255df33e/0718f09a57554b3082ab8ab1a99f61da [2023-11-30 05:38:32,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 05:38:32,871 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 05:38:32,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 05:38:32,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 05:38:32,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 05:38:32,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:38:32" (1/1) ... [2023-11-30 05:38:32,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e1ca436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:32, skipping insertion in model container [2023-11-30 05:38:32,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:38:32" (1/1) ... [2023-11-30 05:38:32,891 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 05:38:32,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:38:33,003 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 05:38:33,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:38:33,023 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:38:33,024 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:38:33,028 INFO L206 MainTranslator]: Completed translation [2023-11-30 05:38:33,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:33 WrapperNode [2023-11-30 05:38:33,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 05:38:33,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 05:38:33,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 05:38:33,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 05:38:33,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:33" (1/1) ... [2023-11-30 05:38:33,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:33" (1/1) ... [2023-11-30 05:38:33,056 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 127 [2023-11-30 05:38:33,056 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 05:38:33,057 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 05:38:33,057 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 05:38:33,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 05:38:33,063 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:33" (1/1) ... [2023-11-30 05:38:33,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:33" (1/1) ... [2023-11-30 05:38:33,065 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:33" (1/1) ... [2023-11-30 05:38:33,066 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:33" (1/1) ... [2023-11-30 05:38:33,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:33" (1/1) ... [2023-11-30 05:38:33,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:33" (1/1) ... [2023-11-30 05:38:33,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:33" (1/1) ... [2023-11-30 05:38:33,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:33" (1/1) ... [2023-11-30 05:38:33,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 05:38:33,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 05:38:33,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 05:38:33,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 05:38:33,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:33" (1/1) ... [2023-11-30 05:38:33,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:38:33,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:38:33,101 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 05:38:33,107 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 05:38:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 05:38:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 05:38:33,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 05:38:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 05:38:33,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 05:38:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-30 05:38:33,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-30 05:38:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-30 05:38:33,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-30 05:38:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 05:38:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 05:38:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 05:38:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 05:38:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 05:38:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 05:38:33,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 05:38:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 05:38:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 05:38:33,122 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 05:38:33,193 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 05:38:33,195 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 05:38:33,393 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 05:38:33,443 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 05:38:33,444 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-30 05:38:33,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:38:33 BoogieIcfgContainer [2023-11-30 05:38:33,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 05:38:33,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 05:38:33,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 05:38:33,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 05:38:33,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 05:38:32" (1/3) ... [2023-11-30 05:38:33,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38942aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:38:33, skipping insertion in model container [2023-11-30 05:38:33,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:38:33" (2/3) ... [2023-11-30 05:38:33,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38942aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:38:33, skipping insertion in model container [2023-11-30 05:38:33,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:38:33" (3/3) ... [2023-11-30 05:38:33,451 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2023-11-30 05:38:33,462 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 05:38:33,462 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-30 05:38:33,462 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 05:38:33,549 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-30 05:38:33,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 152 transitions, 332 flow [2023-11-30 05:38:33,648 INFO L124 PetriNetUnfolderBase]: 9/148 cut-off events. [2023-11-30 05:38:33,648 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-30 05:38:33,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 148 events. 9/148 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 185 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2023-11-30 05:38:33,654 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 152 transitions, 332 flow [2023-11-30 05:38:33,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 122 transitions, 265 flow [2023-11-30 05:38:33,668 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 05:38:33,672 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;@6b070d31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 05:38:33,672 INFO L363 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-30 05:38:33,686 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 05:38:33,686 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2023-11-30 05:38:33,686 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 05:38:33,687 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:38:33,687 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] [2023-11-30 05:38:33,687 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:38:33,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:38:33,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2025565549, now seen corresponding path program 1 times [2023-11-30 05:38:33,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:38:33,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807941344] [2023-11-30 05:38:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:38:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:38:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:38:34,048 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 05:38:34,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:38:34,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807941344] [2023-11-30 05:38:34,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807941344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:38:34,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:38:34,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:38:34,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006394783] [2023-11-30 05:38:34,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:38:34,061 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:38:34,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:38:34,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:38:34,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:38:34,094 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 152 [2023-11-30 05:38:34,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 122 transitions, 265 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 05:38:34,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:38:34,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 152 [2023-11-30 05:38:34,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:38:34,303 INFO L124 PetriNetUnfolderBase]: 358/844 cut-off events. [2023-11-30 05:38:34,304 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-30 05:38:34,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1393 conditions, 844 events. 358/844 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4243 event pairs, 183 based on Foata normal form. 337/1078 useless extension candidates. Maximal degree in co-relation 1015. Up to 481 conditions per place. [2023-11-30 05:38:34,318 INFO L140 encePairwiseOnDemand]: 145/152 looper letters, 34 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2023-11-30 05:38:34,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 116 transitions, 323 flow [2023-11-30 05:38:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:38:34,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:38:34,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-11-30 05:38:34,333 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7609649122807017 [2023-11-30 05:38:34,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-11-30 05:38:34,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-11-30 05:38:34,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:38:34,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-11-30 05:38:34,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 05:38:34,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:34,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:34,352 INFO L307 CegarLoopForPetriNet]: 127 programPoint places, 0 predicate places. [2023-11-30 05:38:34,352 INFO L500 AbstractCegarLoop]: Abstraction has has 127 places, 116 transitions, 323 flow [2023-11-30 05:38:34,352 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 05:38:34,353 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:38:34,353 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] [2023-11-30 05:38:34,353 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 05:38:34,353 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:38:34,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:38:34,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2025565550, now seen corresponding path program 1 times [2023-11-30 05:38:34,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:38:34,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439152819] [2023-11-30 05:38:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:38:34,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:38:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:38:34,546 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 05:38:34,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:38:34,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439152819] [2023-11-30 05:38:34,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439152819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:38:34,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:38:34,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:38:34,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794352602] [2023-11-30 05:38:34,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:38:34,548 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:38:34,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:38:34,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:38:34,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:38:34,549 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 152 [2023-11-30 05:38:34,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 116 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 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 05:38:34,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:38:34,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 152 [2023-11-30 05:38:34,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:38:34,671 INFO L124 PetriNetUnfolderBase]: 363/895 cut-off events. [2023-11-30 05:38:34,671 INFO L125 PetriNetUnfolderBase]: For 169/211 co-relation queries the response was YES. [2023-11-30 05:38:34,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 895 events. 363/895 cut-off events. For 169/211 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4753 event pairs, 185 based on Foata normal form. 0/804 useless extension candidates. Maximal degree in co-relation 1315. Up to 497 conditions per place. [2023-11-30 05:38:34,679 INFO L140 encePairwiseOnDemand]: 149/152 looper letters, 38 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2023-11-30 05:38:34,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 114 transitions, 393 flow [2023-11-30 05:38:34,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:38:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:38:34,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-11-30 05:38:34,682 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7214912280701754 [2023-11-30 05:38:34,682 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-11-30 05:38:34,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-11-30 05:38:34,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:38:34,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-11-30 05:38:34,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 05:38:34,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:34,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:34,686 INFO L307 CegarLoopForPetriNet]: 127 programPoint places, 0 predicate places. [2023-11-30 05:38:34,686 INFO L500 AbstractCegarLoop]: Abstraction has has 127 places, 114 transitions, 393 flow [2023-11-30 05:38:34,686 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 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 05:38:34,686 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:38:34,686 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] [2023-11-30 05:38:34,687 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 05:38:34,687 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:38:34,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:38:34,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1306058778, now seen corresponding path program 1 times [2023-11-30 05:38:34,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:38:34,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35040507] [2023-11-30 05:38:34,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:38:34,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:38:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:38:34,854 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 05:38:34,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:38:34,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35040507] [2023-11-30 05:38:34,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35040507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:38:34,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:38:34,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:38:34,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46164975] [2023-11-30 05:38:34,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:38:34,859 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:38:34,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:38:34,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:38:34,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:38:34,861 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 152 [2023-11-30 05:38:34,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 114 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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 05:38:34,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:38:34,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 152 [2023-11-30 05:38:34,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:38:34,997 INFO L124 PetriNetUnfolderBase]: 319/815 cut-off events. [2023-11-30 05:38:34,997 INFO L125 PetriNetUnfolderBase]: For 349/445 co-relation queries the response was YES. [2023-11-30 05:38:35,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 815 events. 319/815 cut-off events. For 349/445 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4301 event pairs, 159 based on Foata normal form. 10/746 useless extension candidates. Maximal degree in co-relation 1582. Up to 433 conditions per place. [2023-11-30 05:38:35,005 INFO L140 encePairwiseOnDemand]: 147/152 looper letters, 34 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-11-30 05:38:35,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 110 transitions, 443 flow [2023-11-30 05:38:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:38:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:38:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-11-30 05:38:35,007 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7171052631578947 [2023-11-30 05:38:35,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-11-30 05:38:35,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-11-30 05:38:35,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:38:35,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-11-30 05:38:35,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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 05:38:35,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:35,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:35,010 INFO L307 CegarLoopForPetriNet]: 127 programPoint places, -2 predicate places. [2023-11-30 05:38:35,010 INFO L500 AbstractCegarLoop]: Abstraction has has 125 places, 110 transitions, 443 flow [2023-11-30 05:38:35,010 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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 05:38:35,010 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:38:35,011 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, 1, 1, 1] [2023-11-30 05:38:35,011 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 05:38:35,011 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:38:35,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:38:35,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1214397257, now seen corresponding path program 1 times [2023-11-30 05:38:35,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:38:35,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622805465] [2023-11-30 05:38:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:38:35,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:38:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:38:35,084 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 05:38:35,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:38:35,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622805465] [2023-11-30 05:38:35,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622805465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:38:35,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:38:35,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:38:35,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300012138] [2023-11-30 05:38:35,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:38:35,086 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:38:35,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:38:35,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:38:35,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:38:35,090 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 152 [2023-11-30 05:38:35,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 110 transitions, 443 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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 05:38:35,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:38:35,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 152 [2023-11-30 05:38:35,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:38:35,205 INFO L124 PetriNetUnfolderBase]: 305/777 cut-off events. [2023-11-30 05:38:35,205 INFO L125 PetriNetUnfolderBase]: For 634/776 co-relation queries the response was YES. [2023-11-30 05:38:35,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2476 conditions, 777 events. 305/777 cut-off events. For 634/776 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4027 event pairs, 151 based on Foata normal form. 0/708 useless extension candidates. Maximal degree in co-relation 1803. Up to 411 conditions per place. [2023-11-30 05:38:35,214 INFO L140 encePairwiseOnDemand]: 149/152 looper letters, 30 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2023-11-30 05:38:35,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 108 transitions, 489 flow [2023-11-30 05:38:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:38:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:38:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2023-11-30 05:38:35,216 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2023-11-30 05:38:35,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2023-11-30 05:38:35,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2023-11-30 05:38:35,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:38:35,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2023-11-30 05:38:35,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 05:38:35,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:35,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:35,219 INFO L307 CegarLoopForPetriNet]: 127 programPoint places, -2 predicate places. [2023-11-30 05:38:35,220 INFO L500 AbstractCegarLoop]: Abstraction has has 125 places, 108 transitions, 489 flow [2023-11-30 05:38:35,220 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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 05:38:35,220 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:38:35,220 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, 1, 1, 1] [2023-11-30 05:38:35,220 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 05:38:35,220 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:38:35,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:38:35,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1214397258, now seen corresponding path program 1 times [2023-11-30 05:38:35,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:38:35,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763097486] [2023-11-30 05:38:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:38:35,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:38:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:38:35,333 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 05:38:35,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:38:35,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763097486] [2023-11-30 05:38:35,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763097486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:38:35,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:38:35,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:38:35,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48138406] [2023-11-30 05:38:35,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:38:35,334 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:38:35,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:38:35,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:38:35,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:38:35,335 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 152 [2023-11-30 05:38:35,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 108 transitions, 489 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 05:38:35,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:38:35,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 152 [2023-11-30 05:38:35,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:38:35,429 INFO L124 PetriNetUnfolderBase]: 291/739 cut-off events. [2023-11-30 05:38:35,429 INFO L125 PetriNetUnfolderBase]: For 1065/1285 co-relation queries the response was YES. [2023-11-30 05:38:35,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2741 conditions, 739 events. 291/739 cut-off events. For 1065/1285 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3751 event pairs, 143 based on Foata normal form. 6/686 useless extension candidates. Maximal degree in co-relation 2004. Up to 389 conditions per place. [2023-11-30 05:38:35,438 INFO L140 encePairwiseOnDemand]: 149/152 looper letters, 27 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2023-11-30 05:38:35,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 106 transitions, 529 flow [2023-11-30 05:38:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:38:35,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:38:35,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-11-30 05:38:35,439 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2023-11-30 05:38:35,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-11-30 05:38:35,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-11-30 05:38:35,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:38:35,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-11-30 05:38:35,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 05:38:35,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:35,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:35,443 INFO L307 CegarLoopForPetriNet]: 127 programPoint places, -2 predicate places. [2023-11-30 05:38:35,443 INFO L500 AbstractCegarLoop]: Abstraction has has 125 places, 106 transitions, 529 flow [2023-11-30 05:38:35,443 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 05:38:35,443 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:38:35,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:38:35,446 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 05:38:35,446 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:38:35,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:38:35,447 INFO L85 PathProgramCache]: Analyzing trace with hash -282054634, now seen corresponding path program 1 times [2023-11-30 05:38:35,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:38:35,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81658248] [2023-11-30 05:38:35,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:38:35,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:38:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:38:35,501 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 05:38:35,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:38:35,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81658248] [2023-11-30 05:38:35,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81658248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:38:35,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:38:35,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:38:35,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292747161] [2023-11-30 05:38:35,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:38:35,502 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:38:35,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:38:35,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:38:35,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:38:35,503 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 152 [2023-11-30 05:38:35,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 106 transitions, 529 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 05:38:35,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:38:35,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 152 [2023-11-30 05:38:35,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:38:35,593 INFO L124 PetriNetUnfolderBase]: 266/672 cut-off events. [2023-11-30 05:38:35,593 INFO L125 PetriNetUnfolderBase]: For 1408/1674 co-relation queries the response was YES. [2023-11-30 05:38:35,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2877 conditions, 672 events. 266/672 cut-off events. For 1408/1674 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3226 event pairs, 130 based on Foata normal form. 6/627 useless extension candidates. Maximal degree in co-relation 2045. Up to 354 conditions per place. [2023-11-30 05:38:35,603 INFO L140 encePairwiseOnDemand]: 149/152 looper letters, 27 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2023-11-30 05:38:35,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 104 transitions, 569 flow [2023-11-30 05:38:35,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:38:35,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:38:35,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-11-30 05:38:35,604 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2023-11-30 05:38:35,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-11-30 05:38:35,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-11-30 05:38:35,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:38:35,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-11-30 05:38:35,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 05:38:35,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:35,606 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:35,607 INFO L307 CegarLoopForPetriNet]: 127 programPoint places, -2 predicate places. [2023-11-30 05:38:35,607 INFO L500 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 569 flow [2023-11-30 05:38:35,607 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 05:38:35,607 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:38:35,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:38:35,608 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 05:38:35,608 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:38:35,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:38:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash -282054635, now seen corresponding path program 1 times [2023-11-30 05:38:35,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:38:35,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79147860] [2023-11-30 05:38:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:38:35,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:38:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:38:35,642 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 05:38:35,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:38:35,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79147860] [2023-11-30 05:38:35,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79147860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:38:35,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:38:35,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:38:35,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556752674] [2023-11-30 05:38:35,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:38:35,643 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:38:35,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:38:35,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:38:35,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:38:35,644 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 152 [2023-11-30 05:38:35,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 569 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 05:38:35,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:38:35,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 152 [2023-11-30 05:38:35,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:38:35,724 INFO L124 PetriNetUnfolderBase]: 241/605 cut-off events. [2023-11-30 05:38:35,725 INFO L125 PetriNetUnfolderBase]: For 1781/2073 co-relation queries the response was YES. [2023-11-30 05:38:35,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2934 conditions, 605 events. 241/605 cut-off events. For 1781/2073 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2722 event pairs, 117 based on Foata normal form. 6/568 useless extension candidates. Maximal degree in co-relation 2014. Up to 319 conditions per place. [2023-11-30 05:38:35,729 INFO L140 encePairwiseOnDemand]: 149/152 looper letters, 0 selfloop transitions, 0 changer transitions 102/102 dead transitions. [2023-11-30 05:38:35,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 102 transitions, 599 flow [2023-11-30 05:38:35,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:38:35,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:38:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-11-30 05:38:35,730 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7346491228070176 [2023-11-30 05:38:35,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-11-30 05:38:35,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-11-30 05:38:35,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:38:35,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-11-30 05:38:35,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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 05:38:35,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:35,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 05:38:35,733 INFO L307 CegarLoopForPetriNet]: 127 programPoint places, -2 predicate places. [2023-11-30 05:38:35,733 INFO L500 AbstractCegarLoop]: Abstraction has has 125 places, 102 transitions, 599 flow [2023-11-30 05:38:35,733 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 05:38:35,738 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/popl20-difference-det.wvr.c_BEv2_AllErrorsAtOnce [2023-11-30 05:38:35,754 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 20 remaining) [2023-11-30 05:38:35,754 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-30 05:38:35,754 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-30 05:38:35,754 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-30 05:38:35,755 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-30 05:38:35,755 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-30 05:38:35,755 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-30 05:38:35,755 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-30 05:38:35,755 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-30 05:38:35,755 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-30 05:38:35,755 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-30 05:38:35,755 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2023-11-30 05:38:35,755 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-11-30 05:38:35,755 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-11-30 05:38:35,756 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-11-30 05:38:35,756 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-11-30 05:38:35,756 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 20 remaining) [2023-11-30 05:38:35,756 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 20 remaining) [2023-11-30 05:38:35,756 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 20 remaining) [2023-11-30 05:38:35,756 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 20 remaining) [2023-11-30 05:38:35,756 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 05:38:35,757 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:38:35,759 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 05:38:35,759 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 05:38:35,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 05:38:35 BasicIcfg [2023-11-30 05:38:35,763 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 05:38:35,764 INFO L158 Benchmark]: Toolchain (without parser) took 2892.95ms. Allocated memory is still 639.6MB. Free memory was 586.1MB in the beginning and 413.5MB in the end (delta: 172.6MB). Peak memory consumption was 174.5MB. Max. memory is 16.0GB. [2023-11-30 05:38:35,764 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 313.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 05:38:35,764 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.40ms. Allocated memory is still 639.6MB. Free memory was 585.9MB in the beginning and 574.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-30 05:38:35,764 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.83ms. Allocated memory is still 639.6MB. Free memory was 574.5MB in the beginning and 572.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:38:35,764 INFO L158 Benchmark]: Boogie Preprocessor took 20.27ms. Allocated memory is still 639.6MB. Free memory was 572.4MB in the beginning and 570.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:38:35,765 INFO L158 Benchmark]: RCFGBuilder took 367.42ms. Allocated memory is still 639.6MB. Free memory was 570.9MB in the beginning and 549.7MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-11-30 05:38:35,765 INFO L158 Benchmark]: TraceAbstraction took 2315.74ms. Allocated memory is still 639.6MB. Free memory was 549.1MB in the beginning and 413.5MB in the end (delta: 135.5MB). Peak memory consumption was 136.7MB. Max. memory is 16.0GB. [2023-11-30 05:38:35,766 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 313.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 157.40ms. Allocated memory is still 639.6MB. Free memory was 585.9MB in the beginning and 574.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.83ms. Allocated memory is still 639.6MB. Free memory was 574.5MB in the beginning and 572.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.27ms. Allocated memory is still 639.6MB. Free memory was 572.4MB in the beginning and 570.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 367.42ms. Allocated memory is still 639.6MB. Free memory was 570.9MB in the beginning and 549.7MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 2315.74ms. Allocated memory is still 639.6MB. Free memory was 549.1MB in the beginning and 413.5MB in the end (delta: 135.5MB). Peak memory consumption was 136.7MB. 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 - 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 9 procedures, 192 locations, 20 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: 2.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 174 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 174 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 218 IncrementalHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 44 mSDtfsCounter, 218 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=599occurred in iteration=7, InterpolantAutomatonStates: 21, 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, 0.8s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 1219 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 05:38:35,780 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...