/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/safe019_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:09:50,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:09:50,495 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 21:09:50,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:09:50,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:09:50,522 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:09:50,522 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:09:50,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:09:50,523 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:09:50,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:09:50,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:09:50,526 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:09:50,526 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:09:50,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:09:50,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:09:50,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:09:50,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:09:50,528 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:09:50,528 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:09:50,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:09:50,528 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:09:50,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:09:50,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:09:50,529 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:09:50,529 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:09:50,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:09:50,530 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:09:50,530 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:09:50,530 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:09:50,530 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:09:50,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:09:50,531 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:09:50,531 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:09:50,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:09:50,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:09:50,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:09:50,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:09:50,754 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:09:50,754 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:09:50,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i [2023-12-05 21:09:51,824 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:09:52,069 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:09:52,069 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i [2023-12-05 21:09:52,093 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d683ae46f/22afadb1c14946d996d4ac4d6727a537/FLAGce68e96db [2023-12-05 21:09:52,107 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d683ae46f/22afadb1c14946d996d4ac4d6727a537 [2023-12-05 21:09:52,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:09:52,114 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:09:52,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:09:52,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:09:52,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:09:52,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:09:52" (1/1) ... [2023-12-05 21:09:52,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@422f1388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52, skipping insertion in model container [2023-12-05 21:09:52,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:09:52" (1/1) ... [2023-12-05 21:09:52,198 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:09:52,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:09:52,458 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:09:52,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:09:52,524 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:09:52,525 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:09:52,530 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:09:52,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52 WrapperNode [2023-12-05 21:09:52,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:09:52,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:09:52,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:09:52,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:09:52,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52" (1/1) ... [2023-12-05 21:09:52,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52" (1/1) ... [2023-12-05 21:09:52,577 INFO L138 Inliner]: procedures = 177, calls = 89, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 199 [2023-12-05 21:09:52,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:09:52,578 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:09:52,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:09:52,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:09:52,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52" (1/1) ... [2023-12-05 21:09:52,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52" (1/1) ... [2023-12-05 21:09:52,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52" (1/1) ... [2023-12-05 21:09:52,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52" (1/1) ... [2023-12-05 21:09:52,602 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52" (1/1) ... [2023-12-05 21:09:52,604 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52" (1/1) ... [2023-12-05 21:09:52,606 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52" (1/1) ... [2023-12-05 21:09:52,607 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52" (1/1) ... [2023-12-05 21:09:52,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:09:52,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:09:52,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:09:52,616 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:09:52,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52" (1/1) ... [2023-12-05 21:09:52,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:09:52,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:09:52,652 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 21:09:52,661 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 21:09:52,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:09:52,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:09:52,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:09:52,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:09:52,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:09:52,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:09:52,673 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:09:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:09:52,673 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:09:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:09:52,673 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:09:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:09:52,673 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-12-05 21:09:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-12-05 21:09:52,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:09:52,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:09:52,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:09:52,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:09:52,675 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 21:09:52,847 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:09:52,854 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:09:53,250 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:09:53,609 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:09:53,610 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:09:53,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:09:53 BoogieIcfgContainer [2023-12-05 21:09:53,611 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:09:53,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:09:53,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:09:53,615 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:09:53,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:09:52" (1/3) ... [2023-12-05 21:09:53,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bda1e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:09:53, skipping insertion in model container [2023-12-05 21:09:53,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:52" (2/3) ... [2023-12-05 21:09:53,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bda1e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:09:53, skipping insertion in model container [2023-12-05 21:09:53,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:09:53" (3/3) ... [2023-12-05 21:09:53,618 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_power.opt.i [2023-12-05 21:09:53,631 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:09:53,632 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2023-12-05 21:09:53,633 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:09:53,832 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:09:53,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 206 transitions, 428 flow [2023-12-05 21:09:53,953 INFO L124 PetriNetUnfolderBase]: 3/202 cut-off events. [2023-12-05 21:09:53,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:09:53,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 202 events. 3/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 345 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-12-05 21:09:53,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 206 transitions, 428 flow [2023-12-05 21:09:53,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 202 transitions, 416 flow [2023-12-05 21:09:53,982 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:09:53,988 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;@2c14163b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:09:53,988 INFO L363 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2023-12-05 21:09:54,006 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:09:54,006 INFO L124 PetriNetUnfolderBase]: 0/61 cut-off events. [2023-12-05 21:09:54,006 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:09:54,006 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:54,007 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:09:54,007 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:09:54,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:54,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1954853614, now seen corresponding path program 1 times [2023-12-05 21:09:54,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:54,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581584446] [2023-12-05 21:09:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:54,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:54,334 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 21:09:54,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581584446] [2023-12-05 21:09:54,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581584446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:54,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:54,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:54,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241007503] [2023-12-05 21:09:54,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:54,347 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:54,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:54,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:54,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:54,378 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 206 [2023-12-05 21:09:54,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 202 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 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 21:09:54,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:54,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 206 [2023-12-05 21:09:54,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:12,661 INFO L124 PetriNetUnfolderBase]: 76707/131536 cut-off events. [2023-12-05 21:10:12,662 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2023-12-05 21:10:13,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232643 conditions, 131536 events. 76707/131536 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 8030. Compared 1354904 event pairs, 46503 based on Foata normal form. 3276/65919 useless extension candidates. Maximal degree in co-relation 232563. Up to 61250 conditions per place. [2023-12-05 21:10:14,225 INFO L140 encePairwiseOnDemand]: 176/206 looper letters, 77 selfloop transitions, 2 changer transitions 0/193 dead transitions. [2023-12-05 21:10:14,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 193 transitions, 556 flow [2023-12-05 21:10:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:14,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-12-05 21:10:14,237 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7944983818770227 [2023-12-05 21:10:14,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-12-05 21:10:14,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-12-05 21:10:14,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:14,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-12-05 21:10:14,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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 21:10:14,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 21:10:14,254 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 21:10:14,257 INFO L308 CegarLoopForPetriNet]: 212 programPoint places, -26 predicate places. [2023-12-05 21:10:14,258 INFO L500 AbstractCegarLoop]: Abstraction has has 186 places, 193 transitions, 556 flow [2023-12-05 21:10:14,258 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 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 21:10:14,258 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:14,259 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:14,259 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:10:14,259 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:10:14,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:14,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1954853613, now seen corresponding path program 1 times [2023-12-05 21:10:14,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:14,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022261221] [2023-12-05 21:10:14,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:14,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:14,404 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 21:10:14,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:14,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022261221] [2023-12-05 21:10:14,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022261221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:14,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:14,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:14,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755338793] [2023-12-05 21:10:14,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:14,406 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:14,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:14,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:14,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:14,409 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 206 [2023-12-05 21:10:14,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 193 transitions, 556 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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 21:10:14,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:14,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 206 [2023-12-05 21:10:14,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:32,252 INFO L124 PetriNetUnfolderBase]: 77384/132591 cut-off events. [2023-12-05 21:10:32,252 INFO L125 PetriNetUnfolderBase]: For 9667/17579 co-relation queries the response was YES. [2023-12-05 21:10:32,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331045 conditions, 132591 events. 77384/132591 cut-off events. For 9667/17579 co-relation queries the response was YES. Maximal size of possible extension queue 8030. Compared 1363062 event pairs, 47180 based on Foata normal form. 0/63337 useless extension candidates. Maximal degree in co-relation 330959. Up to 68472 conditions per place. [2023-12-05 21:10:33,981 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 94 selfloop transitions, 2 changer transitions 0/214 dead transitions. [2023-12-05 21:10:33,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 214 transitions, 832 flow [2023-12-05 21:10:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:33,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-12-05 21:10:34,006 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7233009708737864 [2023-12-05 21:10:34,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-12-05 21:10:34,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-12-05 21:10:34,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:34,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-12-05 21:10:34,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 21:10:34,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 21:10:34,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 21:10:34,009 INFO L308 CegarLoopForPetriNet]: 212 programPoint places, -25 predicate places. [2023-12-05 21:10:34,009 INFO L500 AbstractCegarLoop]: Abstraction has has 187 places, 214 transitions, 832 flow [2023-12-05 21:10:34,010 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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 21:10:34,010 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:34,010 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:34,010 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:10:34,010 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:10:34,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:34,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1777616245, now seen corresponding path program 1 times [2023-12-05 21:10:34,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:34,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317206650] [2023-12-05 21:10:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:34,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:34,143 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 21:10:34,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:34,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317206650] [2023-12-05 21:10:34,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317206650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:34,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:34,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:10:34,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203128287] [2023-12-05 21:10:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:34,148 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:10:34,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:34,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:10:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:10:34,149 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 206 [2023-12-05 21:10:34,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 214 transitions, 832 flow. Second operand has 6 states, 6 states have (on average 119.83333333333333) internal successors, (719), 6 states have internal predecessors, (719), 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 21:10:34,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:34,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 206 [2023-12-05 21:10:34,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:46,573 INFO L124 PetriNetUnfolderBase]: 49468/93614 cut-off events. [2023-12-05 21:10:46,574 INFO L125 PetriNetUnfolderBase]: For 18308/22568 co-relation queries the response was YES. [2023-12-05 21:10:46,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289732 conditions, 93614 events. 49468/93614 cut-off events. For 18308/22568 co-relation queries the response was YES. Maximal size of possible extension queue 5959. Compared 1059852 event pairs, 9148 based on Foata normal form. 0/57045 useless extension candidates. Maximal degree in co-relation 289635. Up to 56436 conditions per place. [2023-12-05 21:10:47,502 INFO L140 encePairwiseOnDemand]: 184/206 looper letters, 107 selfloop transitions, 18 changer transitions 0/237 dead transitions. [2023-12-05 21:10:47,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 237 transitions, 1214 flow [2023-12-05 21:10:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-05 21:10:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-05 21:10:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 977 transitions. [2023-12-05 21:10:47,505 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6775312066574203 [2023-12-05 21:10:47,505 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 977 transitions. [2023-12-05 21:10:47,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 977 transitions. [2023-12-05 21:10:47,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:47,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 977 transitions. [2023-12-05 21:10:47,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.57142857142858) internal successors, (977), 7 states have internal predecessors, (977), 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 21:10:47,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 21:10:47,509 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 21:10:47,510 INFO L308 CegarLoopForPetriNet]: 212 programPoint places, -21 predicate places. [2023-12-05 21:10:47,510 INFO L500 AbstractCegarLoop]: Abstraction has has 191 places, 237 transitions, 1214 flow [2023-12-05 21:10:47,510 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.83333333333333) internal successors, (719), 6 states have internal predecessors, (719), 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 21:10:47,510 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:47,510 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:47,510 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:10:47,510 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:10:47,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:47,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1777616244, now seen corresponding path program 1 times [2023-12-05 21:10:47,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:47,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574009690] [2023-12-05 21:10:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:47,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:47,668 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 21:10:47,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:47,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574009690] [2023-12-05 21:10:47,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574009690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:47,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:47,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:10:47,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512508661] [2023-12-05 21:10:47,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:47,669 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:10:47,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:47,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:10:47,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:10:47,674 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 206 [2023-12-05 21:10:47,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 237 transitions, 1214 flow. Second operand has 6 states, 6 states have (on average 116.83333333333333) internal successors, (701), 6 states have internal predecessors, (701), 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 21:10:47,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:47,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 206 [2023-12-05 21:10:47,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:49,794 INFO L124 PetriNetUnfolderBase]: 6002/12727 cut-off events. [2023-12-05 21:10:49,795 INFO L125 PetriNetUnfolderBase]: For 3177/4497 co-relation queries the response was YES. [2023-12-05 21:10:49,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47217 conditions, 12727 events. 6002/12727 cut-off events. For 3177/4497 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 119306 event pairs, 2762 based on Foata normal form. 0/9975 useless extension candidates. Maximal degree in co-relation 47109. Up to 8054 conditions per place. [2023-12-05 21:10:49,894 INFO L140 encePairwiseOnDemand]: 183/206 looper letters, 83 selfloop transitions, 7 changer transitions 0/199 dead transitions. [2023-12-05 21:10:49,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 199 transitions, 1090 flow [2023-12-05 21:10:49,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-05 21:10:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-05 21:10:49,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 793 transitions. [2023-12-05 21:10:49,896 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6415857605177994 [2023-12-05 21:10:49,896 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 793 transitions. [2023-12-05 21:10:49,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 793 transitions. [2023-12-05 21:10:49,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:49,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 793 transitions. [2023-12-05 21:10:49,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.16666666666666) internal successors, (793), 6 states have internal predecessors, (793), 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 21:10:49,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 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 21:10:49,929 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 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 21:10:49,929 INFO L308 CegarLoopForPetriNet]: 212 programPoint places, -26 predicate places. [2023-12-05 21:10:49,929 INFO L500 AbstractCegarLoop]: Abstraction has has 186 places, 199 transitions, 1090 flow [2023-12-05 21:10:49,930 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.83333333333333) internal successors, (701), 6 states have internal predecessors, (701), 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 21:10:49,930 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:49,930 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:49,930 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:10:49,930 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:10:49,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1026149228, now seen corresponding path program 1 times [2023-12-05 21:10:49,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:49,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727072337] [2023-12-05 21:10:49,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:49,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:50,049 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 21:10:50,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:50,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727072337] [2023-12-05 21:10:50,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727072337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:50,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:50,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:50,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957820479] [2023-12-05 21:10:50,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:50,050 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:50,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:50,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:50,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:50,051 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 206 [2023-12-05 21:10:50,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 199 transitions, 1090 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 21:10:50,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:50,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 206 [2023-12-05 21:10:50,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:52,696 INFO L124 PetriNetUnfolderBase]: 7421/16492 cut-off events. [2023-12-05 21:10:52,697 INFO L125 PetriNetUnfolderBase]: For 22742/24380 co-relation queries the response was YES. [2023-12-05 21:10:52,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66272 conditions, 16492 events. 7421/16492 cut-off events. For 22742/24380 co-relation queries the response was YES. Maximal size of possible extension queue 1270. Compared 170550 event pairs, 736 based on Foata normal form. 2/13195 useless extension candidates. Maximal degree in co-relation 66156. Up to 9474 conditions per place. [2023-12-05 21:10:52,845 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 97 selfloop transitions, 2 changer transitions 0/219 dead transitions. [2023-12-05 21:10:52,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 219 transitions, 1492 flow [2023-12-05 21:10:52,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:52,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:52,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-12-05 21:10:52,850 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6909385113268608 [2023-12-05 21:10:52,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-12-05 21:10:52,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-12-05 21:10:52,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:52,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-12-05 21:10:52,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 21:10:52,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 21:10:52,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 21:10:52,853 INFO L308 CegarLoopForPetriNet]: 212 programPoint places, -25 predicate places. [2023-12-05 21:10:52,853 INFO L500 AbstractCegarLoop]: Abstraction has has 187 places, 219 transitions, 1492 flow [2023-12-05 21:10:52,853 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 21:10:52,853 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:52,853 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:52,853 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:10:52,853 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:10:52,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1026149229, now seen corresponding path program 1 times [2023-12-05 21:10:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:52,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840442408] [2023-12-05 21:10:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:52,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:52,904 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 21:10:52,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:52,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840442408] [2023-12-05 21:10:52,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840442408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:52,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:52,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:52,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187862867] [2023-12-05 21:10:52,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:52,905 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:52,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:52,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:52,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:52,906 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 206 [2023-12-05 21:10:52,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 219 transitions, 1492 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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 21:10:52,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:52,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 206 [2023-12-05 21:10:52,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:55,752 INFO L124 PetriNetUnfolderBase]: 7420/16003 cut-off events. [2023-12-05 21:10:55,752 INFO L125 PetriNetUnfolderBase]: For 28215/30465 co-relation queries the response was YES. [2023-12-05 21:10:55,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76670 conditions, 16003 events. 7420/16003 cut-off events. For 28215/30465 co-relation queries the response was YES. Maximal size of possible extension queue 1267. Compared 162346 event pairs, 736 based on Foata normal form. 2/12706 useless extension candidates. Maximal degree in co-relation 76545. Up to 10032 conditions per place. [2023-12-05 21:10:55,885 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 102 selfloop transitions, 2 changer transitions 0/218 dead transitions. [2023-12-05 21:10:55,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 218 transitions, 1690 flow [2023-12-05 21:10:55,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:55,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:55,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-12-05 21:10:55,887 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6634304207119741 [2023-12-05 21:10:55,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-12-05 21:10:55,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-12-05 21:10:55,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:55,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-12-05 21:10:55,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 21:10:55,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 21:10:55,889 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 21:10:55,889 INFO L308 CegarLoopForPetriNet]: 212 programPoint places, -24 predicate places. [2023-12-05 21:10:55,889 INFO L500 AbstractCegarLoop]: Abstraction has has 188 places, 218 transitions, 1690 flow [2023-12-05 21:10:55,889 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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 21:10:55,890 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:55,890 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:55,890 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:10:55,890 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:10:55,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:55,890 INFO L85 PathProgramCache]: Analyzing trace with hash 445091685, now seen corresponding path program 1 times [2023-12-05 21:10:55,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:55,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909758456] [2023-12-05 21:10:55,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:55,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:55,939 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 21:10:55,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:55,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909758456] [2023-12-05 21:10:55,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909758456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:55,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:55,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:55,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279463867] [2023-12-05 21:10:55,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:55,940 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:55,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:55,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:55,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:55,941 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 206 [2023-12-05 21:10:55,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 218 transitions, 1690 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 21:10:55,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:55,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 206 [2023-12-05 21:10:55,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:59,065 INFO L124 PetriNetUnfolderBase]: 8833/18144 cut-off events. [2023-12-05 21:10:59,066 INFO L125 PetriNetUnfolderBase]: For 60896/63710 co-relation queries the response was YES. [2023-12-05 21:10:59,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98853 conditions, 18144 events. 8833/18144 cut-off events. For 60896/63710 co-relation queries the response was YES. Maximal size of possible extension queue 1410. Compared 180710 event pairs, 540 based on Foata normal form. 6/14233 useless extension candidates. Maximal degree in co-relation 98720. Up to 11452 conditions per place. [2023-12-05 21:10:59,245 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 119 selfloop transitions, 2 changer transitions 0/240 dead transitions. [2023-12-05 21:10:59,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 240 transitions, 2246 flow [2023-12-05 21:10:59,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:59,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 426 transitions. [2023-12-05 21:10:59,247 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6893203883495146 [2023-12-05 21:10:59,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 426 transitions. [2023-12-05 21:10:59,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 426 transitions. [2023-12-05 21:10:59,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:59,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 426 transitions. [2023-12-05 21:10:59,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 21:10:59,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 21:10:59,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 21:10:59,249 INFO L308 CegarLoopForPetriNet]: 212 programPoint places, -23 predicate places. [2023-12-05 21:10:59,249 INFO L500 AbstractCegarLoop]: Abstraction has has 189 places, 240 transitions, 2246 flow [2023-12-05 21:10:59,249 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 21:10:59,249 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:59,250 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:59,250 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-05 21:10:59,250 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:10:59,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:59,250 INFO L85 PathProgramCache]: Analyzing trace with hash 445091684, now seen corresponding path program 1 times [2023-12-05 21:10:59,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:59,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215640915] [2023-12-05 21:10:59,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:59,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat