/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/goblint-regression/06-symbeq_13-equ_proc_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:12:16,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:12:16,458 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 21:12:16,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:12:16,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:12:16,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:12:16,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:12:16,481 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:12:16,482 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:12:16,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:12:16,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:12:16,483 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:12:16,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:12:16,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:12:16,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:12:16,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:12:16,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:12:16,484 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:12:16,484 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:12:16,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:12:16,485 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:12:16,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:12:16,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:12:16,487 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:12:16,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:12:16,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:12:16,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:12:16,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:12:16,488 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:12:16,488 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:12:16,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:12:16,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:12:16,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:12:16,489 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:12:16,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:12:16,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:12:16,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:12:16,715 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:12:16,717 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:12:16,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_13-equ_proc_nr.i [2023-12-05 21:12:17,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:12:18,262 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:12:18,262 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_13-equ_proc_nr.i [2023-12-05 21:12:18,277 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d0aa1b79/57e21c26ed354a418d4aa909c23cebd0/FLAG41627942b [2023-12-05 21:12:18,306 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d0aa1b79/57e21c26ed354a418d4aa909c23cebd0 [2023-12-05 21:12:18,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:12:18,309 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:12:18,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:12:18,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:12:18,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:12:18,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:12:18" (1/1) ... [2023-12-05 21:12:18,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a78c086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:18, skipping insertion in model container [2023-12-05 21:12:18,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:12:18" (1/1) ... [2023-12-05 21:12:18,386 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:12:18,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:12:18,898 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:12:18,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:12:19,045 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:12:19,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:19 WrapperNode [2023-12-05 21:12:19,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:12:19,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:12:19,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:12:19,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:12:19,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:19" (1/1) ... [2023-12-05 21:12:19,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:19" (1/1) ... [2023-12-05 21:12:19,097 INFO L138 Inliner]: procedures = 267, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-12-05 21:12:19,098 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:12:19,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:12:19,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:12:19,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:12:19,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:19" (1/1) ... [2023-12-05 21:12:19,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:19" (1/1) ... [2023-12-05 21:12:19,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:19" (1/1) ... [2023-12-05 21:12:19,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:19" (1/1) ... [2023-12-05 21:12:19,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:19" (1/1) ... [2023-12-05 21:12:19,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:19" (1/1) ... [2023-12-05 21:12:19,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:19" (1/1) ... [2023-12-05 21:12:19,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:19" (1/1) ... [2023-12-05 21:12:19,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:12:19,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:12:19,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:12:19,134 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:12:19,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:19" (1/1) ... [2023-12-05 21:12:19,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:12:19,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:12:19,173 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 21:12:19,192 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 21:12:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:12:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:12:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-05 21:12:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:12:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-05 21:12:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:12:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-12-05 21:12:19,210 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-12-05 21:12:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:12:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:12:19,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:12:19,211 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 21:12:19,330 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:12:19,331 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:12:19,448 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:12:19,463 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:12:19,463 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:12:19,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:12:19 BoogieIcfgContainer [2023-12-05 21:12:19,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:12:19,469 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:12:19,469 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:12:19,471 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:12:19,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:12:18" (1/3) ... [2023-12-05 21:12:19,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b7a3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:12:19, skipping insertion in model container [2023-12-05 21:12:19,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:19" (2/3) ... [2023-12-05 21:12:19,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b7a3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:12:19, skipping insertion in model container [2023-12-05 21:12:19,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:12:19" (3/3) ... [2023-12-05 21:12:19,475 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_13-equ_proc_nr.i [2023-12-05 21:12:19,487 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:12:19,487 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:12:19,487 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:12:19,526 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:12:19,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 73 transitions, 150 flow [2023-12-05 21:12:19,598 INFO L124 PetriNetUnfolderBase]: 1/72 cut-off events. [2023-12-05 21:12:19,598 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:12:19,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 72 events. 1/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-12-05 21:12:19,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 73 transitions, 150 flow [2023-12-05 21:12:19,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 72 transitions, 147 flow [2023-12-05 21:12:19,617 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:12:19,625 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;@51c99848, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:12:19,626 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:12:19,638 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:12:19,638 INFO L124 PetriNetUnfolderBase]: 1/39 cut-off events. [2023-12-05 21:12:19,639 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:12:19,639 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:19,639 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] [2023-12-05 21:12:19,643 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 21:12:19,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:19,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1435596568, now seen corresponding path program 1 times [2023-12-05 21:12:19,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:19,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499694048] [2023-12-05 21:12:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:19,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:19,960 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 21:12:19,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:19,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499694048] [2023-12-05 21:12:19,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499694048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:19,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:19,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:12:19,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479881511] [2023-12-05 21:12:19,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:19,968 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:12:19,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:19,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:12:19,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:12:19,987 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 73 [2023-12-05 21:12:19,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 21:12:19,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:19,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 73 [2023-12-05 21:12:19,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:20,061 INFO L124 PetriNetUnfolderBase]: 29/155 cut-off events. [2023-12-05 21:12:20,062 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:12:20,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 155 events. 29/155 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 453 event pairs, 16 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 181. Up to 44 conditions per place. [2023-12-05 21:12:20,064 INFO L140 encePairwiseOnDemand]: 70/73 looper letters, 19 selfloop transitions, 2 changer transitions 2/75 dead transitions. [2023-12-05 21:12:20,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 199 flow [2023-12-05 21:12:20,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:12:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:12:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2023-12-05 21:12:20,073 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8356164383561644 [2023-12-05 21:12:20,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions. [2023-12-05 21:12:20,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions. [2023-12-05 21:12:20,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:20,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions. [2023-12-05 21:12:20,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 21:12:20,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 21:12:20,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 21:12:20,083 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2023-12-05 21:12:20,083 INFO L500 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 199 flow [2023-12-05 21:12:20,083 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 21:12:20,083 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:20,084 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] [2023-12-05 21:12:20,084 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:12:20,084 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 21:12:20,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:20,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1435596567, now seen corresponding path program 1 times [2023-12-05 21:12:20,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:20,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163215564] [2023-12-05 21:12:20,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:20,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:20,320 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 21:12:20,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:20,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163215564] [2023-12-05 21:12:20,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163215564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:20,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:20,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:12:20,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796255371] [2023-12-05 21:12:20,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:20,323 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:12:20,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:20,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:12:20,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:12:20,326 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2023-12-05 21:12:20,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 21:12:20,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:20,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2023-12-05 21:12:20,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:20,394 INFO L124 PetriNetUnfolderBase]: 39/178 cut-off events. [2023-12-05 21:12:20,394 INFO L125 PetriNetUnfolderBase]: For 36/51 co-relation queries the response was YES. [2023-12-05 21:12:20,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 178 events. 39/178 cut-off events. For 36/51 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 616 event pairs, 24 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 292. Up to 60 conditions per place. [2023-12-05 21:12:20,396 INFO L140 encePairwiseOnDemand]: 70/73 looper letters, 18 selfloop transitions, 2 changer transitions 4/78 dead transitions. [2023-12-05 21:12:20,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 78 transitions, 257 flow [2023-12-05 21:12:20,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:12:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:12:20,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-12-05 21:12:20,397 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8401826484018264 [2023-12-05 21:12:20,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-12-05 21:12:20,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-12-05 21:12:20,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:20,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-12-05 21:12:20,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 21:12:20,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 21:12:20,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 21:12:20,400 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2023-12-05 21:12:20,400 INFO L500 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 257 flow [2023-12-05 21:12:20,400 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 21:12:20,401 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:20,401 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] [2023-12-05 21:12:20,401 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:12:20,401 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:12:20,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:20,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1370537198, now seen corresponding path program 1 times [2023-12-05 21:12:20,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:20,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169556256] [2023-12-05 21:12:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:20,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:20,604 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 21:12:20,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:20,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169556256] [2023-12-05 21:12:20,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169556256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:20,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:20,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-05 21:12:20,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292170800] [2023-12-05 21:12:20,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:20,608 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-05 21:12:20,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:20,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-05 21:12:20,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-05 21:12:20,609 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 73 [2023-12-05 21:12:20,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 44.714285714285715) internal successors, (313), 7 states have internal predecessors, (313), 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 21:12:20,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:20,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 73 [2023-12-05 21:12:20,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:20,721 INFO L124 PetriNetUnfolderBase]: 33/161 cut-off events. [2023-12-05 21:12:20,721 INFO L125 PetriNetUnfolderBase]: For 97/133 co-relation queries the response was YES. [2023-12-05 21:12:20,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 161 events. 33/161 cut-off events. For 97/133 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 500 event pairs, 21 based on Foata normal form. 9/158 useless extension candidates. Maximal degree in co-relation 325. Up to 57 conditions per place. [2023-12-05 21:12:20,723 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 26 selfloop transitions, 5 changer transitions 4/76 dead transitions. [2023-12-05 21:12:20,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 319 flow [2023-12-05 21:12:20,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-05 21:12:20,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-05 21:12:20,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 286 transitions. [2023-12-05 21:12:20,725 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6529680365296804 [2023-12-05 21:12:20,725 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 286 transitions. [2023-12-05 21:12:20,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 286 transitions. [2023-12-05 21:12:20,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:20,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 286 transitions. [2023-12-05 21:12:20,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 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 21:12:20,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 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 21:12:20,728 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 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 21:12:20,729 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2023-12-05 21:12:20,729 INFO L500 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 319 flow [2023-12-05 21:12:20,729 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.714285714285715) internal successors, (313), 7 states have internal predecessors, (313), 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 21:12:20,729 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:20,729 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] [2023-12-05 21:12:20,729 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:12:20,730 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:12:20,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:20,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1370537199, now seen corresponding path program 1 times [2023-12-05 21:12:20,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:20,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923952953] [2023-12-05 21:12:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:20,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:20,915 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 21:12:20,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:20,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923952953] [2023-12-05 21:12:20,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923952953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:20,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:20,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:12:20,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884674369] [2023-12-05 21:12:20,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:20,920 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:12:20,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:12:20,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:12:20,923 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 73 [2023-12-05 21:12:20,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 50.833333333333336) internal successors, (305), 6 states have internal predecessors, (305), 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 21:12:20,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:20,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 73 [2023-12-05 21:12:20,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:20,971 INFO L124 PetriNetUnfolderBase]: 25/142 cut-off events. [2023-12-05 21:12:20,971 INFO L125 PetriNetUnfolderBase]: For 156/196 co-relation queries the response was YES. [2023-12-05 21:12:20,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 142 events. 25/142 cut-off events. For 156/196 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 390 event pairs, 15 based on Foata normal form. 9/142 useless extension candidates. Maximal degree in co-relation 310. Up to 56 conditions per place. [2023-12-05 21:12:20,973 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 17 selfloop transitions, 3 changer transitions 17/74 dead transitions. [2023-12-05 21:12:20,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 74 transitions, 363 flow [2023-12-05 21:12:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-05 21:12:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-05 21:12:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 263 transitions. [2023-12-05 21:12:20,977 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7205479452054795 [2023-12-05 21:12:20,977 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 263 transitions. [2023-12-05 21:12:20,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 263 transitions. [2023-12-05 21:12:20,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:20,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 263 transitions. [2023-12-05 21:12:20,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 52.6) internal successors, (263), 5 states have internal predecessors, (263), 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 21:12:20,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 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 21:12:20,981 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 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 21:12:20,982 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 9 predicate places. [2023-12-05 21:12:20,983 INFO L500 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 363 flow [2023-12-05 21:12:20,983 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.833333333333336) internal successors, (305), 6 states have internal predecessors, (305), 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 21:12:20,983 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:20,983 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 21:12:20,984 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:12:20,985 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:12:20,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:20,986 INFO L85 PathProgramCache]: Analyzing trace with hash -154015618, now seen corresponding path program 1 times [2023-12-05 21:12:20,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:20,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430474239] [2023-12-05 21:12:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:20,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:21,196 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 21:12:21,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:21,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430474239] [2023-12-05 21:12:21,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430474239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:21,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:21,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-05 21:12:21,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518133707] [2023-12-05 21:12:21,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:21,197 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-05 21:12:21,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:21,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-05 21:12:21,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-05 21:12:21,198 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2023-12-05 21:12:21,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 363 flow. Second operand has 11 states, 11 states have (on average 33.36363636363637) internal successors, (367), 11 states have internal predecessors, (367), 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 21:12:21,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:21,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2023-12-05 21:12:21,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:21,449 INFO L124 PetriNetUnfolderBase]: 76/284 cut-off events. [2023-12-05 21:12:21,449 INFO L125 PetriNetUnfolderBase]: For 633/633 co-relation queries the response was YES. [2023-12-05 21:12:21,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 284 events. 76/284 cut-off events. For 633/633 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1158 event pairs, 36 based on Foata normal form. 4/287 useless extension candidates. Maximal degree in co-relation 466. Up to 125 conditions per place. [2023-12-05 21:12:21,452 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 41 selfloop transitions, 8 changer transitions 33/108 dead transitions. [2023-12-05 21:12:21,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 108 transitions, 796 flow [2023-12-05 21:12:21,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-05 21:12:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-12-05 21:12:21,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 445 transitions. [2023-12-05 21:12:21,454 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5079908675799086 [2023-12-05 21:12:21,454 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 445 transitions. [2023-12-05 21:12:21,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 445 transitions. [2023-12-05 21:12:21,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:21,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 445 transitions. [2023-12-05 21:12:21,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 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 21:12:21,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 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 21:12:21,457 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 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 21:12:21,458 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 20 predicate places. [2023-12-05 21:12:21,458 INFO L500 AbstractCegarLoop]: Abstraction has has 95 places, 108 transitions, 796 flow [2023-12-05 21:12:21,458 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.36363636363637) internal successors, (367), 11 states have internal predecessors, (367), 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 21:12:21,458 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:21,459 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 21:12:21,459 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:12:21,459 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:12:21,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:21,461 INFO L85 PathProgramCache]: Analyzing trace with hash -154015617, now seen corresponding path program 1 times [2023-12-05 21:12:21,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:21,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361238795] [2023-12-05 21:12:21,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:21,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:21,690 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 21:12:21,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:21,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361238795] [2023-12-05 21:12:21,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361238795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:21,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:21,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-05 21:12:21,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172405385] [2023-12-05 21:12:21,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:21,691 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-05 21:12:21,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:21,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-05 21:12:21,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-05 21:12:21,692 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 73 [2023-12-05 21:12:21,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 108 transitions, 796 flow. Second operand has 11 states, 11 states have (on average 34.27272727272727) internal successors, (377), 11 states have internal predecessors, (377), 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 21:12:21,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:21,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 73 [2023-12-05 21:12:21,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:21,914 INFO L124 PetriNetUnfolderBase]: 73/277 cut-off events. [2023-12-05 21:12:21,915 INFO L125 PetriNetUnfolderBase]: For 760/760 co-relation queries the response was YES. [2023-12-05 21:12:21,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 277 events. 73/277 cut-off events. For 760/760 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1101 event pairs, 36 based on Foata normal form. 4/280 useless extension candidates. Maximal degree in co-relation 557. Up to 118 conditions per place. [2023-12-05 21:12:21,916 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 25 selfloop transitions, 4 changer transitions 52/107 dead transitions. [2023-12-05 21:12:21,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 107 transitions, 940 flow [2023-12-05 21:12:21,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-05 21:12:21,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-12-05 21:12:21,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 420 transitions. [2023-12-05 21:12:21,918 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.523038605230386 [2023-12-05 21:12:21,918 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 420 transitions. [2023-12-05 21:12:21,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 420 transitions. [2023-12-05 21:12:21,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:21,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 420 transitions. [2023-12-05 21:12:21,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 38.18181818181818) internal successors, (420), 11 states have internal predecessors, (420), 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 21:12:21,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 21:12:21,920 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 21:12:21,922 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 30 predicate places. [2023-12-05 21:12:21,922 INFO L500 AbstractCegarLoop]: Abstraction has has 105 places, 107 transitions, 940 flow [2023-12-05 21:12:21,922 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.27272727272727) internal successors, (377), 11 states have internal predecessors, (377), 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 21:12:21,923 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:21,923 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 21:12:21,923 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:12:21,923 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:12:21,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:21,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1316506995, now seen corresponding path program 1 times [2023-12-05 21:12:21,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:21,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197191046] [2023-12-05 21:12:21,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:21,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:22,093 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 21:12:22,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:22,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197191046] [2023-12-05 21:12:22,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197191046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:22,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:22,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-05 21:12:22,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606036] [2023-12-05 21:12:22,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:22,097 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-05 21:12:22,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:22,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-05 21:12:22,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-05 21:12:22,100 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 73 [2023-12-05 21:12:22,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 107 transitions, 940 flow. Second operand has 10 states, 10 states have (on average 35.5) internal successors, (355), 10 states have internal predecessors, (355), 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 21:12:22,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:22,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 73 [2023-12-05 21:12:22,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:22,309 INFO L124 PetriNetUnfolderBase]: 70/270 cut-off events. [2023-12-05 21:12:22,309 INFO L125 PetriNetUnfolderBase]: For 906/906 co-relation queries the response was YES. [2023-12-05 21:12:22,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 270 events. 70/270 cut-off events. For 906/906 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1050 event pairs, 18 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 600. Up to 115 conditions per place. [2023-12-05 21:12:22,310 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 28 selfloop transitions, 6 changer transitions 55/115 dead transitions. [2023-12-05 21:12:22,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 115 transitions, 1224 flow [2023-12-05 21:12:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-05 21:12:22,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-12-05 21:12:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 435 transitions. [2023-12-05 21:12:22,312 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5417185554171855 [2023-12-05 21:12:22,312 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 435 transitions. [2023-12-05 21:12:22,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 435 transitions. [2023-12-05 21:12:22,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:22,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 435 transitions. [2023-12-05 21:12:22,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 39.54545454545455) internal successors, (435), 11 states have internal predecessors, (435), 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 21:12:22,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 21:12:22,316 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 21:12:22,317 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 39 predicate places. [2023-12-05 21:12:22,317 INFO L500 AbstractCegarLoop]: Abstraction has has 114 places, 115 transitions, 1224 flow [2023-12-05 21:12:22,317 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.5) internal successors, (355), 10 states have internal predecessors, (355), 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 21:12:22,317 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:22,317 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 21:12:22,317 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-05 21:12:22,317 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:12:22,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:22,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1316506994, now seen corresponding path program 1 times [2023-12-05 21:12:22,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:22,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298539762] [2023-12-05 21:12:22,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:22,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:22,518 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 21:12:22,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:22,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298539762] [2023-12-05 21:12:22,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298539762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:22,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:22,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-05 21:12:22,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862124232] [2023-12-05 21:12:22,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:22,519 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-05 21:12:22,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:22,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-05 21:12:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-05 21:12:22,520 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 73 [2023-12-05 21:12:22,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 115 transitions, 1224 flow. Second operand has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 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 21:12:22,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:22,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 73 [2023-12-05 21:12:22,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:22,747 INFO L124 PetriNetUnfolderBase]: 67/263 cut-off events. [2023-12-05 21:12:22,747 INFO L125 PetriNetUnfolderBase]: For 1107/1107 co-relation queries the response was YES. [2023-12-05 21:12:22,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1503 conditions, 263 events. 67/263 cut-off events. For 1107/1107 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 995 event pairs, 18 based on Foata normal form. 4/266 useless extension candidates. Maximal degree in co-relation 660. Up to 108 conditions per place. [2023-12-05 21:12:22,748 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 0 selfloop transitions, 0 changer transitions 117/117 dead transitions. [2023-12-05 21:12:22,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 117 transitions, 1432 flow [2023-12-05 21:12:22,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-05 21:12:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-05 21:12:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 386 transitions. [2023-12-05 21:12:22,749 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5287671232876713 [2023-12-05 21:12:22,750 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 386 transitions. [2023-12-05 21:12:22,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 386 transitions. [2023-12-05 21:12:22,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:22,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 386 transitions. [2023-12-05 21:12:22,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 38.6) internal successors, (386), 10 states have internal predecessors, (386), 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 21:12:22,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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 21:12:22,752 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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 21:12:22,752 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 47 predicate places. [2023-12-05 21:12:22,752 INFO L500 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 1432 flow [2023-12-05 21:12:22,753 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 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 21:12:22,757 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/06-symbeq_13-equ_proc_nr.i_BEv2_AllErrorsAtOnce [2023-12-05 21:12:22,775 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:12:22,775 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:12:22,775 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:12:22,775 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:12:22,775 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-12-05 21:12:22,776 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:12:22,776 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2023-12-05 21:12:22,776 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2023-12-05 21:12:22,776 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 9 remaining) [2023-12-05 21:12:22,776 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-05 21:12:22,776 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:22,780 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:12:22,780 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:12:22,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:12:22 BasicIcfg [2023-12-05 21:12:22,784 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:12:22,785 INFO L158 Benchmark]: Toolchain (without parser) took 4475.59ms. Allocated memory was 204.5MB in the beginning and 379.6MB in the end (delta: 175.1MB). Free memory was 138.7MB in the beginning and 203.9MB in the end (delta: -65.2MB). Peak memory consumption was 111.2MB. Max. memory is 8.0GB. [2023-12-05 21:12:22,785 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 204.5MB. Free memory is still 153.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:12:22,785 INFO L158 Benchmark]: CACSL2BoogieTranslator took 734.78ms. Allocated memory was 204.5MB in the beginning and 303.0MB in the end (delta: 98.6MB). Free memory was 138.5MB in the beginning and 262.1MB in the end (delta: -123.6MB). Peak memory consumption was 34.2MB. Max. memory is 8.0GB. [2023-12-05 21:12:22,785 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.02ms. Allocated memory is still 303.0MB. Free memory was 262.1MB in the beginning and 259.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:12:22,785 INFO L158 Benchmark]: Boogie Preprocessor took 35.34ms. Allocated memory is still 303.0MB. Free memory was 259.5MB in the beginning and 257.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:12:22,785 INFO L158 Benchmark]: RCFGBuilder took 333.30ms. Allocated memory is still 303.0MB. Free memory was 257.9MB in the beginning and 242.7MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-05 21:12:22,786 INFO L158 Benchmark]: TraceAbstraction took 3314.94ms. Allocated memory was 303.0MB in the beginning and 379.6MB in the end (delta: 76.5MB). Free memory was 241.6MB in the beginning and 203.9MB in the end (delta: 37.8MB). Peak memory consumption was 114.8MB. Max. memory is 8.0GB. [2023-12-05 21:12:22,787 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 204.5MB. Free memory is still 153.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 734.78ms. Allocated memory was 204.5MB in the beginning and 303.0MB in the end (delta: 98.6MB). Free memory was 138.5MB in the beginning and 262.1MB in the end (delta: -123.6MB). Peak memory consumption was 34.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.02ms. Allocated memory is still 303.0MB. Free memory was 262.1MB in the beginning and 259.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.34ms. Allocated memory is still 303.0MB. Free memory was 259.5MB in the beginning and 257.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 333.30ms. Allocated memory is still 303.0MB. Free memory was 257.9MB in the beginning and 242.7MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 3314.94ms. Allocated memory was 303.0MB in the beginning and 379.6MB in the end (delta: 76.5MB). Free memory was 241.6MB in the beginning and 203.9MB in the end (delta: 37.8MB). Peak memory consumption was 114.8MB. 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 3 procedures, 85 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: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 739 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 739 mSDsluCounter, 304 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 212 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 968 IncrementalHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 92 mSDtfsCounter, 968 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1432occurred in iteration=8, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 342 NumberOfCodeBlocks, 342 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 334 ConstructedInterpolants, 0 QuantifiedInterpolants, 3084 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 21:12:22,836 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...