/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:09:19,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:09:19,962 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-05 21:09:19,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:09:19,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:09:19,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:09:19,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:09:19,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:09:19,986 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:09:19,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:09:19,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:09:19,987 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:09:19,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:09:19,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:09:19,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:09:19,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:09:19,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:09:19,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:09:19,989 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:09:19,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:09:19,990 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:09:19,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:09:19,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:09:19,991 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:09:19,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:09:19,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:09:19,992 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:09:19,992 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:09:19,993 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:09:19,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:09:19,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:09:19,993 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:09:19,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:09:19,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:09:20,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:09:20,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:09:20,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:09:20,233 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:09:20,233 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:09:20,234 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2023-12-05 21:09:21,381 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:09:21,621 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:09:21,624 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2023-12-05 21:09:21,641 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4807e78ec/95ec3bf04d5841eda4432b60a1c7b293/FLAGecade2da8 [2023-12-05 21:09:21,652 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4807e78ec/95ec3bf04d5841eda4432b60a1c7b293 [2023-12-05 21:09:21,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:09:21,656 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:09:21,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:09:21,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:09:21,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:09:21,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:09:21" (1/1) ... [2023-12-05 21:09:21,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3db3ce41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21, skipping insertion in model container [2023-12-05 21:09:21,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:09:21" (1/1) ... [2023-12-05 21:09:21,715 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:09:22,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:09:22,016 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:09:22,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:09:22,103 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:09:22,103 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:09:22,110 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:09:22,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:22 WrapperNode [2023-12-05 21:09:22,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:09:22,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:09:22,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:09:22,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:09:22,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:22" (1/1) ... [2023-12-05 21:09:22,131 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:22" (1/1) ... [2023-12-05 21:09:22,152 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-12-05 21:09:22,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:09:22,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:09:22,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:09:22,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:09:22,166 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:22" (1/1) ... [2023-12-05 21:09:22,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:22" (1/1) ... [2023-12-05 21:09:22,169 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:22" (1/1) ... [2023-12-05 21:09:22,170 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:22" (1/1) ... [2023-12-05 21:09:22,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:22" (1/1) ... [2023-12-05 21:09:22,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:22" (1/1) ... [2023-12-05 21:09:22,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:22" (1/1) ... [2023-12-05 21:09:22,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:22" (1/1) ... [2023-12-05 21:09:22,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:09:22,183 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:09:22,183 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:09:22,183 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:09:22,184 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:22" (1/1) ... [2023-12-05 21:09:22,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:09:22,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:09:22,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-05 21:09:22,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-05 21:09:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:09:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:09:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:09:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:09:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:09:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:09:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:09:22,258 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:09:22,259 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:09:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:09:22,259 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:09:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:09:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:09:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:09:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:09:22,261 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:09:22,366 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:09:22,368 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:09:22,621 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:09:22,630 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:09:22,631 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:09:22,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:09:22 BoogieIcfgContainer [2023-12-05 21:09:22,632 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:09:22,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:09:22,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:09:22,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:09:22,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:09:21" (1/3) ... [2023-12-05 21:09:22,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f719bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:09:22, skipping insertion in model container [2023-12-05 21:09:22,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:22" (2/3) ... [2023-12-05 21:09:22,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f719bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:09:22, skipping insertion in model container [2023-12-05 21:09:22,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:09:22" (3/3) ... [2023-12-05 21:09:22,648 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2023-12-05 21:09:22,664 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:09:22,665 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:09:22,665 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:09:22,752 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:09:22,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 103 transitions, 218 flow [2023-12-05 21:09:22,829 INFO L124 PetriNetUnfolderBase]: 3/100 cut-off events. [2023-12-05 21:09:22,830 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:09:22,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 100 events. 3/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2023-12-05 21:09:22,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 103 transitions, 218 flow [2023-12-05 21:09:22,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 54 transitions, 114 flow [2023-12-05 21:09:22,856 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:09:22,861 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;@5010fe5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:09:22,861 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:09:22,866 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:09:22,866 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-12-05 21:09:22,866 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:09:22,866 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:22,867 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] [2023-12-05 21:09:22,867 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:22,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:22,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1544765099, now seen corresponding path program 1 times [2023-12-05 21:09:22,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:22,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582789674] [2023-12-05 21:09:22,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:22,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:09:23,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:23,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582789674] [2023-12-05 21:09:23,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582789674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:23,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:23,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:23,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092433234] [2023-12-05 21:09:23,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:23,157 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:23,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:23,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:23,183 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 103 [2023-12-05 21:09:23,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:23,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 103 [2023-12-05 21:09:23,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:23,232 INFO L124 PetriNetUnfolderBase]: 0/53 cut-off events. [2023-12-05 21:09:23,232 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:09:23,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 53 events. 0/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2023-12-05 21:09:23,233 INFO L140 encePairwiseOnDemand]: 101/103 looper letters, 13 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-12-05 21:09:23,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 140 flow [2023-12-05 21:09:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:23,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-12-05 21:09:23,246 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7961165048543689 [2023-12-05 21:09:23,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-12-05 21:09:23,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-12-05 21:09:23,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:23,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-12-05 21:09:23,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,264 INFO L308 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2023-12-05 21:09:23,265 INFO L500 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 140 flow [2023-12-05 21:09:23,265 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,265 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:23,265 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] [2023-12-05 21:09:23,265 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:09:23,266 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:23,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:23,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1544765098, now seen corresponding path program 1 times [2023-12-05 21:09:23,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:23,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493941777] [2023-12-05 21:09:23,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:23,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:09:23,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:23,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493941777] [2023-12-05 21:09:23,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493941777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:23,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:23,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:23,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746907296] [2023-12-05 21:09:23,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:23,447 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:23,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:23,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:23,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:23,449 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 103 [2023-12-05 21:09:23,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:23,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 103 [2023-12-05 21:09:23,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:23,495 INFO L124 PetriNetUnfolderBase]: 0/52 cut-off events. [2023-12-05 21:09:23,495 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-05 21:09:23,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 52 events. 0/52 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-12-05 21:09:23,496 INFO L140 encePairwiseOnDemand]: 101/103 looper letters, 11 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-12-05 21:09:23,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 160 flow [2023-12-05 21:09:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:23,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:23,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-12-05 21:09:23,498 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8187702265372169 [2023-12-05 21:09:23,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-12-05 21:09:23,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-12-05 21:09:23,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:23,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-12-05 21:09:23,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,502 INFO L308 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2023-12-05 21:09:23,503 INFO L500 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 160 flow [2023-12-05 21:09:23,503 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,503 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:23,503 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] [2023-12-05 21:09:23,503 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:09:23,504 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:23,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:23,504 INFO L85 PathProgramCache]: Analyzing trace with hash 985272360, now seen corresponding path program 1 times [2023-12-05 21:09:23,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:23,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197881126] [2023-12-05 21:09:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:23,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:09:23,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:23,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197881126] [2023-12-05 21:09:23,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197881126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:23,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:23,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:23,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017068829] [2023-12-05 21:09:23,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:23,658 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:23,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:23,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:23,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:23,660 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 103 [2023-12-05 21:09:23,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:23,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 103 [2023-12-05 21:09:23,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:23,710 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2023-12-05 21:09:23,710 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-12-05 21:09:23,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 51 events. 0/51 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 1/52 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-12-05 21:09:23,711 INFO L140 encePairwiseOnDemand]: 101/103 looper letters, 11 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-12-05 21:09:23,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 51 transitions, 180 flow [2023-12-05 21:09:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-12-05 21:09:23,713 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8187702265372169 [2023-12-05 21:09:23,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-12-05 21:09:23,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-12-05 21:09:23,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:23,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-12-05 21:09:23,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,717 INFO L308 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2023-12-05 21:09:23,717 INFO L500 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 180 flow [2023-12-05 21:09:23,717 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,717 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:23,717 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] [2023-12-05 21:09:23,718 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:09:23,718 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:23,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:23,720 INFO L85 PathProgramCache]: Analyzing trace with hash 985272359, now seen corresponding path program 1 times [2023-12-05 21:09:23,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:23,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843159899] [2023-12-05 21:09:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:23,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:09:23,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:23,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843159899] [2023-12-05 21:09:23,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843159899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:23,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:23,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757977484] [2023-12-05 21:09:23,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:23,799 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:23,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:23,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:23,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:23,801 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 103 [2023-12-05 21:09:23,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:23,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 103 [2023-12-05 21:09:23,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:23,840 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2023-12-05 21:09:23,841 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-12-05 21:09:23,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 50 events. 0/50 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-12-05 21:09:23,842 INFO L140 encePairwiseOnDemand]: 101/103 looper letters, 11 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-12-05 21:09:23,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 50 transitions, 198 flow [2023-12-05 21:09:23,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:23,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:23,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-12-05 21:09:23,845 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7896440129449838 [2023-12-05 21:09:23,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-12-05 21:09:23,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-12-05 21:09:23,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:23,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-12-05 21:09:23,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,854 INFO L308 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2023-12-05 21:09:23,854 INFO L500 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 198 flow [2023-12-05 21:09:23,854 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,854 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:23,854 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] [2023-12-05 21:09:23,855 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:09:23,855 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:23,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:23,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1429435977, now seen corresponding path program 1 times [2023-12-05 21:09:23,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:23,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428629173] [2023-12-05 21:09:23,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:23,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:09:23,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:23,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428629173] [2023-12-05 21:09:23,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428629173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:23,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:23,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:23,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036608515] [2023-12-05 21:09:23,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:23,933 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:23,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:23,935 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 103 [2023-12-05 21:09:23,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:23,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 103 [2023-12-05 21:09:23,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:23,965 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2023-12-05 21:09:23,966 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-12-05 21:09:23,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 49 events. 0/49 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2023-12-05 21:09:23,967 INFO L140 encePairwiseOnDemand]: 101/103 looper letters, 11 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-12-05 21:09:23,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 49 transitions, 216 flow [2023-12-05 21:09:23,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:23,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:23,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-12-05 21:09:23,969 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7896440129449838 [2023-12-05 21:09:23,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-12-05 21:09:23,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-12-05 21:09:23,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:23,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-12-05 21:09:23,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,975 INFO L308 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2023-12-05 21:09:23,975 INFO L500 AbstractCegarLoop]: Abstraction has has 66 places, 49 transitions, 216 flow [2023-12-05 21:09:23,975 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,976 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:23,976 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] [2023-12-05 21:09:23,976 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:09:23,976 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:23,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:23,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1429435978, now seen corresponding path program 1 times [2023-12-05 21:09:23,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:23,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003634764] [2023-12-05 21:09:23,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:23,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:09:24,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:24,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003634764] [2023-12-05 21:09:24,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003634764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:24,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:24,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:24,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448143328] [2023-12-05 21:09:24,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:24,086 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:24,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:24,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:24,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:24,089 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 103 [2023-12-05 21:09:24,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 49 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:24,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:24,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 103 [2023-12-05 21:09:24,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:24,114 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2023-12-05 21:09:24,114 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-12-05 21:09:24,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 48 events. 0/48 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2023-12-05 21:09:24,115 INFO L140 encePairwiseOnDemand]: 101/103 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2023-12-05 21:09:24,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 48 transitions, 228 flow [2023-12-05 21:09:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:24,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-12-05 21:09:24,116 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8122977346278317 [2023-12-05 21:09:24,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-12-05 21:09:24,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-12-05 21:09:24,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:24,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-12-05 21:09:24,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:24,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:24,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:24,119 INFO L308 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2023-12-05 21:09:24,120 INFO L500 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 228 flow [2023-12-05 21:09:24,120 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:24,127 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe013_tso.i_BEv2_AllErrorsAtOnce [2023-12-05 21:09:24,168 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:09:24,168 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:09:24,169 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:09:24,169 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:09:24,169 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-12-05 21:09:24,169 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:09:24,169 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-12-05 21:09:24,170 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-12-05 21:09:24,170 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-12-05 21:09:24,170 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:09:24,171 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:09:24,173 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:09:24,174 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:09:24,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:09:24 BasicIcfg [2023-12-05 21:09:24,180 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:09:24,180 INFO L158 Benchmark]: Toolchain (without parser) took 2524.79ms. Allocated memory is still 298.8MB. Free memory was 245.2MB in the beginning and 258.4MB in the end (delta: -13.3MB). Peak memory consumption was 108.7MB. Max. memory is 8.0GB. [2023-12-05 21:09:24,181 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 218.1MB. Free memory is still 166.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:09:24,181 INFO L158 Benchmark]: CACSL2BoogieTranslator took 453.73ms. Allocated memory is still 298.8MB. Free memory was 245.2MB in the beginning and 224.6MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-05 21:09:24,182 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.15ms. Allocated memory is still 298.8MB. Free memory was 224.6MB in the beginning and 222.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:09:24,182 INFO L158 Benchmark]: Boogie Preprocessor took 29.74ms. Allocated memory is still 298.8MB. Free memory was 222.5MB in the beginning and 221.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:09:24,182 INFO L158 Benchmark]: RCFGBuilder took 449.09ms. Allocated memory is still 298.8MB. Free memory was 221.1MB in the beginning and 206.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-05 21:09:24,183 INFO L158 Benchmark]: TraceAbstraction took 1545.60ms. Allocated memory is still 298.8MB. Free memory was 205.8MB in the beginning and 258.4MB in the end (delta: -52.7MB). Peak memory consumption was 69.9MB. Max. memory is 8.0GB. [2023-12-05 21:09:24,185 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 218.1MB. Free memory is still 166.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 453.73ms. Allocated memory is still 298.8MB. Free memory was 245.2MB in the beginning and 224.6MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.15ms. Allocated memory is still 298.8MB. Free memory was 224.6MB in the beginning and 222.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.74ms. Allocated memory is still 298.8MB. Free memory was 222.5MB in the beginning and 221.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 449.09ms. Allocated memory is still 298.8MB. Free memory was 221.1MB in the beginning and 206.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1545.60ms. Allocated memory is still 298.8MB. Free memory was 205.8MB in the beginning and 258.4MB in the end (delta: -52.7MB). Peak memory consumption was 69.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 129 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=228occurred in iteration=6, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 264 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:09:24,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...