/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/safe000_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:08:29,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:08:29,193 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 21:08:29,213 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:08:29,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:08:29,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:08:29,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:08:29,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:08:29,216 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:08:29,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:08:29,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:08:29,217 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:08:29,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:08:29,217 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:08:29,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:08:29,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:08:29,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:08:29,219 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:08:29,219 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:08:29,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:08:29,220 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:08:29,227 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:08:29,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:08:29,228 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:08:29,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:08:29,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:08:29,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:08:29,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:08:29,229 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:08:29,229 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:08:29,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:08:29,230 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:08:29,230 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:08:29,230 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:08:29,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:08:29,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:08:29,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:08:29,435 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:08:29,435 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:08:29,436 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_power.opt.i [2023-12-05 21:08:30,644 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:08:30,887 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:08:30,888 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_power.opt.i [2023-12-05 21:08:30,905 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c65ae027/615d2a20c85d4544b8ddaca40c83f230/FLAG0bfd067d1 [2023-12-05 21:08:30,923 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c65ae027/615d2a20c85d4544b8ddaca40c83f230 [2023-12-05 21:08:30,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:08:30,926 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:08:30,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:08:30,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:08:30,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:08:30,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:08:30" (1/1) ... [2023-12-05 21:08:30,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a00031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:30, skipping insertion in model container [2023-12-05 21:08:30,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:08:30" (1/1) ... [2023-12-05 21:08:31,003 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:08:31,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:08:31,404 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:08:31,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:08:31,496 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:08:31,497 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:08:31,503 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:08:31,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:31 WrapperNode [2023-12-05 21:08:31,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:08:31,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:08:31,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:08:31,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:08:31,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:31" (1/1) ... [2023-12-05 21:08:31,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:31" (1/1) ... [2023-12-05 21:08:31,572 INFO L138 Inliner]: procedures = 176, calls = 74, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 186 [2023-12-05 21:08:31,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:08:31,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:08:31,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:08:31,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:08:31,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:31" (1/1) ... [2023-12-05 21:08:31,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:31" (1/1) ... [2023-12-05 21:08:31,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:31" (1/1) ... [2023-12-05 21:08:31,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:31" (1/1) ... [2023-12-05 21:08:31,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:31" (1/1) ... [2023-12-05 21:08:31,601 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:31" (1/1) ... [2023-12-05 21:08:31,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:31" (1/1) ... [2023-12-05 21:08:31,620 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:31" (1/1) ... [2023-12-05 21:08:31,624 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:08:31,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:08:31,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:08:31,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:08:31,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:31" (1/1) ... [2023-12-05 21:08:31,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:08:31,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:08:31,657 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 21:08:31,675 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 21:08:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:08:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:08:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:08:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:08:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:08:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:08:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:08:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:08:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:08:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:08:31,699 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:08:31,699 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:08:31,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:08:31,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:08:31,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:08:31,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:08:31,701 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 21:08:31,857 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:08:31,859 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:08:32,313 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:08:32,806 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:08:32,807 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:08:32,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:08:32 BoogieIcfgContainer [2023-12-05 21:08:32,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:08:32,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:08:32,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:08:32,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:08:32,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:08:30" (1/3) ... [2023-12-05 21:08:32,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eae9a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:08:32, skipping insertion in model container [2023-12-05 21:08:32,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:31" (2/3) ... [2023-12-05 21:08:32,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eae9a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:08:32, skipping insertion in model container [2023-12-05 21:08:32,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:08:32" (3/3) ... [2023-12-05 21:08:32,818 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_power.opt.i [2023-12-05 21:08:32,837 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:08:32,837 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2023-12-05 21:08:32,838 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:08:32,964 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:08:33,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 173 transitions, 358 flow [2023-12-05 21:08:33,099 INFO L124 PetriNetUnfolderBase]: 3/170 cut-off events. [2023-12-05 21:08:33,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:08:33,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 170 events. 3/170 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 238 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2023-12-05 21:08:33,107 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 173 transitions, 358 flow [2023-12-05 21:08:33,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 170 transitions, 349 flow [2023-12-05 21:08:33,127 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:08:33,135 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;@d0025c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:08:33,136 INFO L363 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2023-12-05 21:08:33,148 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:08:33,149 INFO L124 PetriNetUnfolderBase]: 0/57 cut-off events. [2023-12-05 21:08:33,149 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:08:33,149 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:33,149 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] [2023-12-05 21:08:33,150 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:08:33,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:33,154 INFO L85 PathProgramCache]: Analyzing trace with hash 153502217, now seen corresponding path program 1 times [2023-12-05 21:08:33,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:33,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974942994] [2023-12-05 21:08:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:33,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:33,473 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 21:08:33,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974942994] [2023-12-05 21:08:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974942994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:33,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:33,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:33,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155662842] [2023-12-05 21:08:33,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:33,484 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:33,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:33,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:33,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:33,512 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 173 [2023-12-05 21:08:33,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 170 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 21:08:33,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:33,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 173 [2023-12-05 21:08:33,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:38,895 INFO L124 PetriNetUnfolderBase]: 13737/26785 cut-off events. [2023-12-05 21:08:38,895 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-12-05 21:08:38,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46249 conditions, 26785 events. 13737/26785 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 2257. Compared 267069 event pairs, 8862 based on Foata normal form. 819/14059 useless extension candidates. Maximal degree in co-relation 46174. Up to 12547 conditions per place. [2023-12-05 21:08:39,136 INFO L140 encePairwiseOnDemand]: 153/173 looper letters, 66 selfloop transitions, 2 changer transitions 0/168 dead transitions. [2023-12-05 21:08:39,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 168 transitions, 481 flow [2023-12-05 21:08:39,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:39,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-12-05 21:08:39,153 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7996146435452793 [2023-12-05 21:08:39,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-12-05 21:08:39,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-12-05 21:08:39,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:39,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-12-05 21:08:39,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 21:08:39,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:39,171 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:39,174 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -16 predicate places. [2023-12-05 21:08:39,175 INFO L500 AbstractCegarLoop]: Abstraction has has 161 places, 168 transitions, 481 flow [2023-12-05 21:08:39,175 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 21:08:39,175 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:39,176 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] [2023-12-05 21:08:39,176 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:08:39,176 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:08:39,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:39,177 INFO L85 PathProgramCache]: Analyzing trace with hash 153502218, now seen corresponding path program 1 times [2023-12-05 21:08:39,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:39,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282385136] [2023-12-05 21:08:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:39,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:39,365 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 21:08:39,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:39,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282385136] [2023-12-05 21:08:39,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282385136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:39,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:39,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:39,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020599518] [2023-12-05 21:08:39,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:39,367 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:39,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:39,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:39,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:39,369 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 173 [2023-12-05 21:08:39,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 168 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:39,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:39,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 173 [2023-12-05 21:08:39,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:43,746 INFO L124 PetriNetUnfolderBase]: 13853/26993 cut-off events. [2023-12-05 21:08:43,746 INFO L125 PetriNetUnfolderBase]: For 1895/3953 co-relation queries the response was YES. [2023-12-05 21:08:43,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65248 conditions, 26993 events. 13853/26993 cut-off events. For 1895/3953 co-relation queries the response was YES. Maximal size of possible extension queue 2257. Compared 268758 event pairs, 8978 based on Foata normal form. 0/13395 useless extension candidates. Maximal degree in co-relation 65167. Up to 14015 conditions per place. [2023-12-05 21:08:43,963 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 81 selfloop transitions, 2 changer transitions 0/186 dead transitions. [2023-12-05 21:08:43,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 186 transitions, 719 flow [2023-12-05 21:08:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:43,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:43,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-12-05 21:08:43,965 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7495183044315993 [2023-12-05 21:08:43,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-12-05 21:08:43,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-12-05 21:08:43,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:43,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-12-05 21:08:43,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 21:08:43,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:43,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:43,970 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -15 predicate places. [2023-12-05 21:08:43,970 INFO L500 AbstractCegarLoop]: Abstraction has has 162 places, 186 transitions, 719 flow [2023-12-05 21:08:43,970 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:43,971 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:43,971 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] [2023-12-05 21:08:43,971 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:08:43,971 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:08:43,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:43,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1591618528, now seen corresponding path program 1 times [2023-12-05 21:08:43,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:43,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355951348] [2023-12-05 21:08:43,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:43,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:44,232 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 21:08:44,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:44,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355951348] [2023-12-05 21:08:44,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355951348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:44,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:44,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:08:44,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985118645] [2023-12-05 21:08:44,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:44,236 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:08:44,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:44,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:08:44,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:08:44,239 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 173 [2023-12-05 21:08:44,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 186 transitions, 719 flow. Second operand has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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 21:08:44,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:44,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 173 [2023-12-05 21:08:44,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:47,089 INFO L124 PetriNetUnfolderBase]: 8362/18057 cut-off events. [2023-12-05 21:08:47,089 INFO L125 PetriNetUnfolderBase]: For 3818/5088 co-relation queries the response was YES. [2023-12-05 21:08:47,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54062 conditions, 18057 events. 8362/18057 cut-off events. For 3818/5088 co-relation queries the response was YES. Maximal size of possible extension queue 1455. Compared 187968 event pairs, 2250 based on Foata normal form. 0/11271 useless extension candidates. Maximal degree in co-relation 53970. Up to 9250 conditions per place. [2023-12-05 21:08:47,261 INFO L140 encePairwiseOnDemand]: 154/173 looper letters, 92 selfloop transitions, 15 changer transitions 0/205 dead transitions. [2023-12-05 21:08:47,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 205 transitions, 1043 flow [2023-12-05 21:08:47,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-05 21:08:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-05 21:08:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 851 transitions. [2023-12-05 21:08:47,267 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7027250206440958 [2023-12-05 21:08:47,267 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 851 transitions. [2023-12-05 21:08:47,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 851 transitions. [2023-12-05 21:08:47,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:47,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 851 transitions. [2023-12-05 21:08:47,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.57142857142857) internal successors, (851), 7 states have internal predecessors, (851), 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 21:08:47,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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 21:08:47,273 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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 21:08:47,274 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -11 predicate places. [2023-12-05 21:08:47,275 INFO L500 AbstractCegarLoop]: Abstraction has has 166 places, 205 transitions, 1043 flow [2023-12-05 21:08:47,275 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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 21:08:47,275 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:47,275 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] [2023-12-05 21:08:47,276 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:08:47,276 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:08:47,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:47,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1591618527, now seen corresponding path program 1 times [2023-12-05 21:08:47,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:47,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896104401] [2023-12-05 21:08:47,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:47,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:47,416 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 21:08:47,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:47,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896104401] [2023-12-05 21:08:47,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896104401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:47,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:47,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:47,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945234432] [2023-12-05 21:08:47,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:47,418 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:47,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:47,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:47,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:47,424 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 173 [2023-12-05 21:08:47,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 205 transitions, 1043 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 21:08:47,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:47,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 173 [2023-12-05 21:08:47,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:50,578 INFO L124 PetriNetUnfolderBase]: 11708/23116 cut-off events. [2023-12-05 21:08:50,579 INFO L125 PetriNetUnfolderBase]: For 8461/13457 co-relation queries the response was YES. [2023-12-05 21:08:50,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86466 conditions, 23116 events. 11708/23116 cut-off events. For 8461/13457 co-relation queries the response was YES. Maximal size of possible extension queue 1928. Compared 235215 event pairs, 1913 based on Foata normal form. 0/13726 useless extension candidates. Maximal degree in co-relation 86370. Up to 12993 conditions per place. [2023-12-05 21:08:50,947 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 129 selfloop transitions, 26 changer transitions 0/275 dead transitions. [2023-12-05 21:08:50,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 275 transitions, 1919 flow [2023-12-05 21:08:50,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-12-05 21:08:50,949 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8188824662813102 [2023-12-05 21:08:50,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-12-05 21:08:50,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-12-05 21:08:50,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:50,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-12-05 21:08:50,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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 21:08:50,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:50,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:50,954 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -9 predicate places. [2023-12-05 21:08:50,954 INFO L500 AbstractCegarLoop]: Abstraction has has 168 places, 275 transitions, 1919 flow [2023-12-05 21:08:50,954 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 21:08:50,955 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:50,955 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] [2023-12-05 21:08:50,955 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:08:50,955 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:08:50,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:50,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1591618525, now seen corresponding path program 1 times [2023-12-05 21:08:50,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:50,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778630267] [2023-12-05 21:08:50,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:50,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:51,140 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 21:08:51,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:51,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778630267] [2023-12-05 21:08:51,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778630267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:51,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:51,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-05 21:08:51,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524840624] [2023-12-05 21:08:51,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:51,143 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-05 21:08:51,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:51,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-05 21:08:51,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-05 21:08:51,145 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 173 [2023-12-05 21:08:51,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 275 transitions, 1919 flow. Second operand has 5 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 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 21:08:51,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:51,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 173 [2023-12-05 21:08:51,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:52,225 INFO L124 PetriNetUnfolderBase]: 2536/5959 cut-off events. [2023-12-05 21:08:52,225 INFO L125 PetriNetUnfolderBase]: For 4848/5388 co-relation queries the response was YES. [2023-12-05 21:08:52,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23817 conditions, 5959 events. 2536/5959 cut-off events. For 4848/5388 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 54992 event pairs, 293 based on Foata normal form. 0/4656 useless extension candidates. Maximal degree in co-relation 23711. Up to 3513 conditions per place. [2023-12-05 21:08:52,259 INFO L140 encePairwiseOnDemand]: 161/173 looper letters, 102 selfloop transitions, 3 changer transitions 0/206 dead transitions. [2023-12-05 21:08:52,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 206 transitions, 1439 flow [2023-12-05 21:08:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-05 21:08:52,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-05 21:08:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 579 transitions. [2023-12-05 21:08:52,262 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.669364161849711 [2023-12-05 21:08:52,262 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 579 transitions. [2023-12-05 21:08:52,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 579 transitions. [2023-12-05 21:08:52,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:52,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 579 transitions. [2023-12-05 21:08:52,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 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 21:08:52,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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 21:08:52,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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 21:08:52,267 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -14 predicate places. [2023-12-05 21:08:52,267 INFO L500 AbstractCegarLoop]: Abstraction has has 163 places, 206 transitions, 1439 flow [2023-12-05 21:08:52,268 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 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 21:08:52,268 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:52,268 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] [2023-12-05 21:08:52,268 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:08:52,268 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:08:52,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:52,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1402929073, now seen corresponding path program 1 times [2023-12-05 21:08:52,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:52,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430479792] [2023-12-05 21:08:52,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:52,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:52,323 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 21:08:52,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:52,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430479792] [2023-12-05 21:08:52,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430479792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:52,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:52,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:52,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382008034] [2023-12-05 21:08:52,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:52,328 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:52,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:52,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:52,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:52,330 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 173 [2023-12-05 21:08:52,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 206 transitions, 1439 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 21:08:52,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:52,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 173 [2023-12-05 21:08:52,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:53,379 INFO L124 PetriNetUnfolderBase]: 3029/6626 cut-off events. [2023-12-05 21:08:53,380 INFO L125 PetriNetUnfolderBase]: For 10496/11192 co-relation queries the response was YES. [2023-12-05 21:08:53,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31412 conditions, 6626 events. 3029/6626 cut-off events. For 10496/11192 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 60210 event pairs, 312 based on Foata normal form. 3/5083 useless extension candidates. Maximal degree in co-relation 31297. Up to 4013 conditions per place. [2023-12-05 21:08:53,418 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 105 selfloop transitions, 2 changer transitions 0/207 dead transitions. [2023-12-05 21:08:53,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 207 transitions, 1669 flow [2023-12-05 21:08:53,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-12-05 21:08:53,420 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6897880539499036 [2023-12-05 21:08:53,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-12-05 21:08:53,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-12-05 21:08:53,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:53,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-12-05 21:08:53,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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 21:08:53,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:53,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:53,423 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -13 predicate places. [2023-12-05 21:08:53,423 INFO L500 AbstractCegarLoop]: Abstraction has has 164 places, 207 transitions, 1669 flow [2023-12-05 21:08:53,423 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 21:08:53,424 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:53,424 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] [2023-12-05 21:08:53,424 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:08:53,424 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:08:53,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1402929072, now seen corresponding path program 1 times [2023-12-05 21:08:53,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:53,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504761295] [2023-12-05 21:08:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:53,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:53,508 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 21:08:53,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:53,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504761295] [2023-12-05 21:08:53,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504761295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:53,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:53,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:53,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952048034] [2023-12-05 21:08:53,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:53,514 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:53,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:53,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:53,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:53,516 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 173 [2023-12-05 21:08:53,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 207 transitions, 1669 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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 21:08:53,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:53,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 173 [2023-12-05 21:08:53,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:54,609 INFO L124 PetriNetUnfolderBase]: 3027/6639 cut-off events. [2023-12-05 21:08:54,609 INFO L125 PetriNetUnfolderBase]: For 14731/15723 co-relation queries the response was YES. [2023-12-05 21:08:54,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35594 conditions, 6639 events. 3027/6639 cut-off events. For 14731/15723 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 60056 event pairs, 216 based on Foata normal form. 3/5096 useless extension candidates. Maximal degree in co-relation 35471. Up to 4013 conditions per place. [2023-12-05 21:08:54,646 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 131 selfloop transitions, 2 changer transitions 0/237 dead transitions. [2023-12-05 21:08:54,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 237 transitions, 2361 flow [2023-12-05 21:08:54,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:54,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2023-12-05 21:08:54,648 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7129094412331407 [2023-12-05 21:08:54,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2023-12-05 21:08:54,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2023-12-05 21:08:54,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:54,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2023-12-05 21:08:54,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 21:08:54,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:54,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:54,651 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -12 predicate places. [2023-12-05 21:08:54,651 INFO L500 AbstractCegarLoop]: Abstraction has has 165 places, 237 transitions, 2361 flow [2023-12-05 21:08:54,651 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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 21:08:54,651 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:54,651 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] [2023-12-05 21:08:54,651 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-05 21:08:54,651 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:08:54,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:54,652 INFO L85 PathProgramCache]: Analyzing trace with hash -967076880, now seen corresponding path program 1 times [2023-12-05 21:08:54,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:54,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210501021] [2023-12-05 21:08:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:54,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:54,717 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 21:08:54,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:54,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210501021] [2023-12-05 21:08:54,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210501021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:54,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:54,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:54,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497611222] [2023-12-05 21:08:54,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:54,719 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:54,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:54,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:54,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:54,720 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 173 [2023-12-05 21:08:54,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 237 transitions, 2361 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 21:08:54,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:54,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 173 [2023-12-05 21:08:54,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:56,075 INFO L124 PetriNetUnfolderBase]: 3507/7075 cut-off events. [2023-12-05 21:08:56,076 INFO L125 PetriNetUnfolderBase]: For 28660/29040 co-relation queries the response was YES. [2023-12-05 21:08:56,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44027 conditions, 7075 events. 3507/7075 cut-off events. For 28660/29040 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 61874 event pairs, 137 based on Foata normal form. 11/5312 useless extension candidates. Maximal degree in co-relation 43896. Up to 4508 conditions per place. [2023-12-05 21:08:56,132 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 167 selfloop transitions, 2 changer transitions 2/274 dead transitions. [2023-12-05 21:08:56,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 274 transitions, 3303 flow [2023-12-05 21:08:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2023-12-05 21:08:56,134 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7129094412331407 [2023-12-05 21:08:56,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2023-12-05 21:08:56,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2023-12-05 21:08:56,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:56,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2023-12-05 21:08:56,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 21:08:56,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:56,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:56,137 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -11 predicate places. [2023-12-05 21:08:56,138 INFO L500 AbstractCegarLoop]: Abstraction has has 166 places, 274 transitions, 3303 flow [2023-12-05 21:08:56,138 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 21:08:56,138 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:56,138 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] [2023-12-05 21:08:56,138 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-05 21:08:56,138 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:08:56,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:56,139 INFO L85 PathProgramCache]: Analyzing trace with hash -967076881, now seen corresponding path program 1 times [2023-12-05 21:08:56,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:56,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734513475] [2023-12-05 21:08:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:56,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:56,206 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 21:08:56,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:56,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734513475] [2023-12-05 21:08:56,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734513475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:56,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:56,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:56,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583076372] [2023-12-05 21:08:56,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:56,207 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:56,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:56,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:56,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:56,209 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 173 [2023-12-05 21:08:56,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 274 transitions, 3303 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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 21:08:56,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:56,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 173 [2023-12-05 21:08:56,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:57,704 INFO L124 PetriNetUnfolderBase]: 3492/7064 cut-off events. [2023-12-05 21:08:57,704 INFO L125 PetriNetUnfolderBase]: For 35720/36174 co-relation queries the response was YES. [2023-12-05 21:08:57,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48762 conditions, 7064 events. 3492/7064 cut-off events. For 35720/36174 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 61859 event pairs, 137 based on Foata normal form. 11/5301 useless extension candidates. Maximal degree in co-relation 48622. Up to 4536 conditions per place. [2023-12-05 21:08:57,760 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 170 selfloop transitions, 2 changer transitions 2/273 dead transitions. [2023-12-05 21:08:57,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 273 transitions, 3639 flow [2023-12-05 21:08:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-12-05 21:08:57,763 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6859344894026975 [2023-12-05 21:08:57,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-12-05 21:08:57,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-12-05 21:08:57,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:57,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-12-05 21:08:57,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 21:08:57,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:57,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:57,765 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -10 predicate places. [2023-12-05 21:08:57,765 INFO L500 AbstractCegarLoop]: Abstraction has has 167 places, 273 transitions, 3639 flow [2023-12-05 21:08:57,766 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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 21:08:57,766 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:57,766 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:08:57,766 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-05 21:08:57,766 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:08:57,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:57,767 INFO L85 PathProgramCache]: Analyzing trace with hash 675510185, now seen corresponding path program 1 times [2023-12-05 21:08:57,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:57,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589601281] [2023-12-05 21:08:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:57,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:57,869 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 21:08:57,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:57,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589601281] [2023-12-05 21:08:57,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589601281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:57,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:57,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:57,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171835190] [2023-12-05 21:08:57,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:57,870 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:57,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:57,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:57,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:57,872 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 173 [2023-12-05 21:08:57,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 273 transitions, 3639 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 21:08:57,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:57,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 173 [2023-12-05 21:08:57,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:59,138 INFO L124 PetriNetUnfolderBase]: 3456/7049 cut-off events. [2023-12-05 21:08:59,139 INFO L125 PetriNetUnfolderBase]: For 44261/44791 co-relation queries the response was YES. [2023-12-05 21:08:59,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52082 conditions, 7049 events. 3456/7049 cut-off events. For 44261/44791 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 62109 event pairs, 121 based on Foata normal form. 1/5293 useless extension candidates. Maximal degree in co-relation 51939. Up to 4536 conditions per place. [2023-12-05 21:08:59,205 INFO L140 encePairwiseOnDemand]: 169/173 looper letters, 211 selfloop transitions, 20 changer transitions 2/350 dead transitions. [2023-12-05 21:08:59,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 350 transitions, 5651 flow [2023-12-05 21:08:59,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:59,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2023-12-05 21:08:59,207 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7784200385356455 [2023-12-05 21:08:59,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2023-12-05 21:08:59,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2023-12-05 21:08:59,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:59,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2023-12-05 21:08:59,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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 21:08:59,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:59,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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 21:08:59,210 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -8 predicate places. [2023-12-05 21:08:59,210 INFO L500 AbstractCegarLoop]: Abstraction has has 169 places, 350 transitions, 5651 flow [2023-12-05 21:08:59,211 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 21:08:59,211 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:59,211 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:08:59,211 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-05 21:08:59,211 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:08:59,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1035284378, now seen corresponding path program 1 times [2023-12-05 21:08:59,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:59,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382888952] [2023-12-05 21:08:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:59,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:59,302 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 21:08:59,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:59,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382888952] [2023-12-05 21:08:59,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382888952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:59,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:59,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-05 21:08:59,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995242452] [2023-12-05 21:08:59,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:59,303 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-05 21:08:59,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:59,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-05 21:08:59,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-05 21:08:59,304 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 173 [2023-12-05 21:08:59,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 350 transitions, 5651 flow. Second operand has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 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 21:08:59,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:59,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 173 [2023-12-05 21:08:59,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:00,672 INFO L124 PetriNetUnfolderBase]: 3428/7041 cut-off events. [2023-12-05 21:09:00,672 INFO L125 PetriNetUnfolderBase]: For 54123/54663 co-relation queries the response was YES. [2023-12-05 21:09:00,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55957 conditions, 7041 events. 3428/7041 cut-off events. For 54123/54663 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 62705 event pairs, 119 based on Foata normal form. 0/5302 useless extension candidates. Maximal degree in co-relation 55803. Up to 4536 conditions per place. [2023-12-05 21:09:00,735 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 207 selfloop transitions, 46 changer transitions 2/355 dead transitions. [2023-12-05 21:09:00,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 355 transitions, 6223 flow [2023-12-05 21:09:00,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-05 21:09:00,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-05 21:09:00,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 480 transitions. [2023-12-05 21:09:00,737 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6936416184971098 [2023-12-05 21:09:00,737 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 480 transitions. [2023-12-05 21:09:00,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 480 transitions. [2023-12-05 21:09:00,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:00,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 480 transitions. [2023-12-05 21:09:00,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 21:09:00,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 21:09:00,740 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 21:09:00,741 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -6 predicate places. [2023-12-05 21:09:00,741 INFO L500 AbstractCegarLoop]: Abstraction has has 171 places, 355 transitions, 6223 flow [2023-12-05 21:09:00,741 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 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 21:09:00,741 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:00,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:09:00,741 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-05 21:09:00,742 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:09:00,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:00,742 INFO L85 PathProgramCache]: Analyzing trace with hash 377961307, now seen corresponding path program 1 times [2023-12-05 21:09:00,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:00,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371952436] [2023-12-05 21:09:00,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:00,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:01,004 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 21:09:01,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:01,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371952436] [2023-12-05 21:09:01,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371952436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:01,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:01,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:09:01,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123006182] [2023-12-05 21:09:01,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:01,005 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:09:01,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:01,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:09:01,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:09:01,006 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 173 [2023-12-05 21:09:01,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 355 transitions, 6223 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 21:09:01,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:01,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 173 [2023-12-05 21:09:01,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:02,447 INFO L124 PetriNetUnfolderBase]: 3400/6984 cut-off events. [2023-12-05 21:09:02,447 INFO L125 PetriNetUnfolderBase]: For 65938/66744 co-relation queries the response was YES. [2023-12-05 21:09:02,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59166 conditions, 6984 events. 3400/6984 cut-off events. For 65938/66744 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 61879 event pairs, 110 based on Foata normal form. 13/5277 useless extension candidates. Maximal degree in co-relation 59002. Up to 4536 conditions per place. [2023-12-05 21:09:02,531 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 220 selfloop transitions, 20 changer transitions 2/353 dead transitions. [2023-12-05 21:09:02,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 353 transitions, 6659 flow [2023-12-05 21:09:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-05 21:09:02,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-05 21:09:02,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 482 transitions. [2023-12-05 21:09:02,533 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6965317919075145 [2023-12-05 21:09:02,533 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 482 transitions. [2023-12-05 21:09:02,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 482 transitions. [2023-12-05 21:09:02,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:02,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 482 transitions. [2023-12-05 21:09:02,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 21:09:02,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 21:09:02,537 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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 21:09:02,537 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -4 predicate places. [2023-12-05 21:09:02,537 INFO L500 AbstractCegarLoop]: Abstraction has has 173 places, 353 transitions, 6659 flow [2023-12-05 21:09:02,538 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 21:09:02,538 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:02,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:09:02,538 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-05 21:09:02,538 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting P1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:09:02,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:02,539 INFO L85 PathProgramCache]: Analyzing trace with hash 885058824, now seen corresponding path program 1 times [2023-12-05 21:09:02,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:02,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024413105] [2023-12-05 21:09:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:02,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:02,712 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 21:09:02,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:02,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024413105] [2023-12-05 21:09:02,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024413105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:02,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:02,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-05 21:09:02,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776101766] [2023-12-05 21:09:02,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:02,713 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-05 21:09:02,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:02,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-05 21:09:02,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-05 21:09:02,715 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 173 [2023-12-05 21:09:02,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 353 transitions, 6659 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 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 21:09:02,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:02,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 173 [2023-12-05 21:09:02,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:03,967 INFO L124 PetriNetUnfolderBase]: 2576/5464 cut-off events. [2023-12-05 21:09:03,967 INFO L125 PetriNetUnfolderBase]: For 65567/66447 co-relation queries the response was YES. [2023-12-05 21:09:03,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49233 conditions, 5464 events. 2576/5464 cut-off events. For 65567/66447 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 46992 event pairs, 110 based on Foata normal form. 1/4225 useless extension candidates. Maximal degree in co-relation 49058. Up to 3505 conditions per place. [2023-12-05 21:09:04,018 INFO L140 encePairwiseOnDemand]: 156/173 looper letters, 215 selfloop transitions, 47 changer transitions 2/360 dead transitions. [2023-12-05 21:09:04,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 360 transitions, 7369 flow [2023-12-05 21:09:04,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-05 21:09:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-05 21:09:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 684 transitions. [2023-12-05 21:09:04,020 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6589595375722543 [2023-12-05 21:09:04,020 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 684 transitions. [2023-12-05 21:09:04,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 684 transitions. [2023-12-05 21:09:04,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:04,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 684 transitions. [2023-12-05 21:09:04,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 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 21:09:04,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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 21:09:04,024 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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 21:09:04,024 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, 1 predicate places. [2023-12-05 21:09:04,024 INFO L500 AbstractCegarLoop]: Abstraction has has 178 places, 360 transitions, 7369 flow [2023-12-05 21:09:04,025 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 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 21:09:04,025 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:04,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:09:04,025 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-05 21:09:04,025 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting P1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:09:04,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2136163625, now seen corresponding path program 1 times [2023-12-05 21:09:04,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:04,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845188941] [2023-12-05 21:09:04,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:04,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:04,321 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 21:09:04,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845188941] [2023-12-05 21:09:04,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845188941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:04,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:04,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-05 21:09:04,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71098617] [2023-12-05 21:09:04,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:04,323 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-05 21:09:04,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:04,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-05 21:09:04,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-05 21:09:04,325 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 173 [2023-12-05 21:09:04,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 360 transitions, 7369 flow. Second operand has 9 states, 9 states have (on average 103.44444444444444) internal successors, (931), 9 states have internal predecessors, (931), 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 21:09:04,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:04,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 173 [2023-12-05 21:09:04,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:05,203 INFO L124 PetriNetUnfolderBase]: 1752/4091 cut-off events. [2023-12-05 21:09:05,204 INFO L125 PetriNetUnfolderBase]: For 53874/54896 co-relation queries the response was YES. [2023-12-05 21:09:05,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37637 conditions, 4091 events. 1752/4091 cut-off events. For 53874/54896 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 34240 event pairs, 110 based on Foata normal form. 1/3332 useless extension candidates. Maximal degree in co-relation 37451. Up to 2474 conditions per place. [2023-12-05 21:09:05,247 INFO L140 encePairwiseOnDemand]: 155/173 looper letters, 233 selfloop transitions, 35 changer transitions 4/367 dead transitions. [2023-12-05 21:09:05,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 367 transitions, 8109 flow [2023-12-05 21:09:05,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-05 21:09:05,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-05 21:09:05,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 881 transitions. [2023-12-05 21:09:05,249 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6365606936416185 [2023-12-05 21:09:05,249 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 881 transitions. [2023-12-05 21:09:05,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 881 transitions. [2023-12-05 21:09:05,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:05,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 881 transitions. [2023-12-05 21:09:05,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.125) internal successors, (881), 8 states have internal predecessors, (881), 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 21:09:05,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 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 21:09:05,254 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 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 21:09:05,254 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, 8 predicate places. [2023-12-05 21:09:05,255 INFO L500 AbstractCegarLoop]: Abstraction has has 185 places, 367 transitions, 8109 flow [2023-12-05 21:09:05,255 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 103.44444444444444) internal successors, (931), 9 states have internal predecessors, (931), 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 21:09:05,255 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:05,255 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, 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 21:09:05,255 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-05 21:09:05,255 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting P1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-12-05 21:09:05,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:05,256 INFO L85 PathProgramCache]: Analyzing trace with hash 139744575, now seen corresponding path program 1 times [2023-12-05 21:09:05,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:05,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886434012] [2023-12-05 21:09:05,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:05,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:05,643 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 21:09:05,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:05,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886434012] [2023-12-05 21:09:05,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886434012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:05,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:05,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-05 21:09:05,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990038500] [2023-12-05 21:09:05,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:05,644 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-05 21:09:05,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:05,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-05 21:09:05,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-05 21:09:05,645 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 173 [2023-12-05 21:09:05,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 367 transitions, 8109 flow. Second operand has 11 states, 11 states have (on average 101.18181818181819) internal successors, (1113), 11 states have internal predecessors, (1113), 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 21:09:05,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:05,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 173 [2023-12-05 21:09:05,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:06,451 INFO L124 PetriNetUnfolderBase]: 723/1870 cut-off events. [2023-12-05 21:09:06,451 INFO L125 PetriNetUnfolderBase]: For 30944/32108 co-relation queries the response was YES. [2023-12-05 21:09:06,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16996 conditions, 1870 events. 723/1870 cut-off events. For 30944/32108 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11918 event pairs, 14 based on Foata normal form. 1/1831 useless extension candidates. Maximal degree in co-relation 16799. Up to 824 conditions per place. [2023-12-05 21:09:06,462 INFO L140 encePairwiseOnDemand]: 158/173 looper letters, 0 selfloop transitions, 0 changer transitions 327/327 dead transitions. [2023-12-05 21:09:06,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 327 transitions, 7375 flow [2023-12-05 21:09:06,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-05 21:09:06,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-05 21:09:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 956 transitions. [2023-12-05 21:09:06,465 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6140012845215157 [2023-12-05 21:09:06,465 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 956 transitions. [2023-12-05 21:09:06,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 956 transitions. [2023-12-05 21:09:06,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:06,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 956 transitions. [2023-12-05 21:09:06,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 106.22222222222223) internal successors, (956), 9 states have internal predecessors, (956), 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 21:09:06,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 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 21:09:06,470 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 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 21:09:06,471 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, 9 predicate places. [2023-12-05 21:09:06,471 INFO L500 AbstractCegarLoop]: Abstraction has has 186 places, 327 transitions, 7375 flow [2023-12-05 21:09:06,471 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 101.18181818181819) internal successors, (1113), 11 states have internal predecessors, (1113), 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 21:09:06,486 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe000_power.opt.i_BEv2_AllErrorsAtOnce [2023-12-05 21:09:06,519 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 71 remaining) [2023-12-05 21:09:06,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 71 remaining) [2023-12-05 21:09:06,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 71 remaining) [2023-12-05 21:09:06,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 71 remaining) [2023-12-05 21:09:06,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 71 remaining) [2023-12-05 21:09:06,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 71 remaining) [2023-12-05 21:09:06,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 71 remaining) [2023-12-05 21:09:06,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 71 remaining) [2023-12-05 21:09:06,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 71 remaining) [2023-12-05 21:09:06,521 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 71 remaining) [2023-12-05 21:09:06,521 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 71 remaining) [2023-12-05 21:09:06,521 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 71 remaining) [2023-12-05 21:09:06,521 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 71 remaining) [2023-12-05 21:09:06,521 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 71 remaining) [2023-12-05 21:09:06,521 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 71 remaining) [2023-12-05 21:09:06,521 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 71 remaining) [2023-12-05 21:09:06,521 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 71 remaining) [2023-12-05 21:09:06,522 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 71 remaining) [2023-12-05 21:09:06,522 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 71 remaining) [2023-12-05 21:09:06,522 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 71 remaining) [2023-12-05 21:09:06,522 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 71 remaining) [2023-12-05 21:09:06,522 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 71 remaining) [2023-12-05 21:09:06,522 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 71 remaining) [2023-12-05 21:09:06,522 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 71 remaining) [2023-12-05 21:09:06,522 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 71 remaining) [2023-12-05 21:09:06,523 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 71 remaining) [2023-12-05 21:09:06,523 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 71 remaining) [2023-12-05 21:09:06,523 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 71 remaining) [2023-12-05 21:09:06,523 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 71 remaining) [2023-12-05 21:09:06,523 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 71 remaining) [2023-12-05 21:09:06,523 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 71 remaining) [2023-12-05 21:09:06,523 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 71 remaining) [2023-12-05 21:09:06,523 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 71 remaining) [2023-12-05 21:09:06,523 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 71 remaining) [2023-12-05 21:09:06,524 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 71 remaining) [2023-12-05 21:09:06,524 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 71 remaining) [2023-12-05 21:09:06,524 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 71 remaining) [2023-12-05 21:09:06,524 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 71 remaining) [2023-12-05 21:09:06,524 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 71 remaining) [2023-12-05 21:09:06,524 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 71 remaining) [2023-12-05 21:09:06,524 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 71 remaining) [2023-12-05 21:09:06,524 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 71 remaining) [2023-12-05 21:09:06,525 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 71 remaining) [2023-12-05 21:09:06,525 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 71 remaining) [2023-12-05 21:09:06,525 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 71 remaining) [2023-12-05 21:09:06,525 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 71 remaining) [2023-12-05 21:09:06,525 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 71 remaining) [2023-12-05 21:09:06,525 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 71 remaining) [2023-12-05 21:09:06,525 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 71 remaining) [2023-12-05 21:09:06,525 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 71 remaining) [2023-12-05 21:09:06,526 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 71 remaining) [2023-12-05 21:09:06,526 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 71 remaining) [2023-12-05 21:09:06,526 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 71 remaining) [2023-12-05 21:09:06,526 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 71 remaining) [2023-12-05 21:09:06,526 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 71 remaining) [2023-12-05 21:09:06,526 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 71 remaining) [2023-12-05 21:09:06,526 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 71 remaining) [2023-12-05 21:09:06,526 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 71 remaining) [2023-12-05 21:09:06,527 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 71 remaining) [2023-12-05 21:09:06,527 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 71 remaining) [2023-12-05 21:09:06,527 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 71 remaining) [2023-12-05 21:09:06,527 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 71 remaining) [2023-12-05 21:09:06,527 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 71 remaining) [2023-12-05 21:09:06,527 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 71 remaining) [2023-12-05 21:09:06,527 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 71 remaining) [2023-12-05 21:09:06,527 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 71 remaining) [2023-12-05 21:09:06,527 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 71 remaining) [2023-12-05 21:09:06,528 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 71 remaining) [2023-12-05 21:09:06,528 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 71 remaining) [2023-12-05 21:09:06,528 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 71 remaining) [2023-12-05 21:09:06,528 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 71 remaining) [2023-12-05 21:09:06,528 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-05 21:09:06,529 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:09:06,534 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:09:06,534 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:09:06,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:09:06 BasicIcfg [2023-12-05 21:09:06,543 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:09:06,543 INFO L158 Benchmark]: Toolchain (without parser) took 35617.40ms. Allocated memory was 293.6MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 238.2MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-05 21:09:06,543 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 146.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:09:06,544 INFO L158 Benchmark]: CACSL2BoogieTranslator took 578.23ms. Allocated memory is still 293.6MB. Free memory was 237.9MB in the beginning and 213.3MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-05 21:09:06,544 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.93ms. Allocated memory is still 293.6MB. Free memory was 213.3MB in the beginning and 210.6MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-05 21:09:06,544 INFO L158 Benchmark]: Boogie Preprocessor took 51.15ms. Allocated memory is still 293.6MB. Free memory was 210.6MB in the beginning and 208.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:09:06,544 INFO L158 Benchmark]: RCFGBuilder took 1181.20ms. Allocated memory is still 293.6MB. Free memory was 208.2MB in the beginning and 247.8MB in the end (delta: -39.6MB). Peak memory consumption was 74.3MB. Max. memory is 8.0GB. [2023-12-05 21:09:06,545 INFO L158 Benchmark]: TraceAbstraction took 33730.72ms. Allocated memory was 293.6MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 247.3MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-05 21:09:06,546 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 146.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 578.23ms. Allocated memory is still 293.6MB. Free memory was 237.9MB in the beginning and 213.3MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.93ms. Allocated memory is still 293.6MB. Free memory was 213.3MB in the beginning and 210.6MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.15ms. Allocated memory is still 293.6MB. Free memory was 210.6MB in the beginning and 208.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1181.20ms. Allocated memory is still 293.6MB. Free memory was 208.2MB in the beginning and 247.8MB in the end (delta: -39.6MB). Peak memory consumption was 74.3MB. Max. memory is 8.0GB. * TraceAbstraction took 33730.72ms. Allocated memory was 293.6MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 247.3MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 1.2GB. 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - 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, 226 locations, 71 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: 33.5s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 30.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 597 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 597 mSDsluCounter, 193 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1255 IncrementalHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 143 mSDtfsCounter, 1255 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8109occurred in iteration=14, InterpolantAutomatonStates: 67, 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, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1108 NumberOfCodeBlocks, 1108 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1093 ConstructedInterpolants, 0 QuantifiedInterpolants, 4483 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 40 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:09:06,567 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...