/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:09:18,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:09:18,847 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-05 21:09:18,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:09:18,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:09:18,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:09:18,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:09:18,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:09:18,875 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:09:18,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:09:18,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:09:18,880 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:09:18,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:09:18,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:09:18,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:09:18,881 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:09:18,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:09:18,882 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:09:18,882 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:09:18,882 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:09:18,883 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:09:18,883 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:09:18,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:09:18,884 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:09:18,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:09:18,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:09:18,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:09:18,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:09:18,886 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:09:18,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:09:18,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:09:18,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:09:18,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:09:18,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:09:19,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:09:19,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:09:19,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:09:19,184 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:09:19,185 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:09:19,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-12-05 21:09:20,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:09:20,690 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:09:20,691 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-12-05 21:09:20,717 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eec17a4e/b060b21bfae1404bb422a30c5b3c85f2/FLAG36f813ed6 [2023-12-05 21:09:20,734 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eec17a4e/b060b21bfae1404bb422a30c5b3c85f2 [2023-12-05 21:09:20,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:09:20,738 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:09:20,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:09:20,742 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:09:20,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:09:20,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:09:20" (1/1) ... [2023-12-05 21:09:20,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b3a0564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:20, skipping insertion in model container [2023-12-05 21:09:20,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:09:20" (1/1) ... [2023-12-05 21:09:20,806 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:09:21,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:09:21,205 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:09:21,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:09:21,312 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:09:21,312 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:09:21,319 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:09:21,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21 WrapperNode [2023-12-05 21:09:21,319 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:09:21,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:09:21,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:09:21,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:09:21,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21" (1/1) ... [2023-12-05 21:09:21,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21" (1/1) ... [2023-12-05 21:09:21,389 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 133 [2023-12-05 21:09:21,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:09:21,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:09:21,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:09:21,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:09:21,404 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21" (1/1) ... [2023-12-05 21:09:21,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21" (1/1) ... [2023-12-05 21:09:21,422 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21" (1/1) ... [2023-12-05 21:09:21,422 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21" (1/1) ... [2023-12-05 21:09:21,430 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21" (1/1) ... [2023-12-05 21:09:21,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21" (1/1) ... [2023-12-05 21:09:21,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21" (1/1) ... [2023-12-05 21:09:21,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21" (1/1) ... [2023-12-05 21:09:21,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:09:21,456 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:09:21,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:09:21,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:09:21,457 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21" (1/1) ... [2023-12-05 21:09:21,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:09:21,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:09:21,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-05 21:09:21,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-05 21:09:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:09:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:09:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:09:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:09:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:09:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:09:21,526 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:09:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:09:21,526 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:09:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:09:21,526 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:09:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:09:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:09:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:09:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:09:21,528 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:09:21,677 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:09:21,681 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:09:22,060 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:09:22,181 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:09:22,181 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:09:22,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:09:22 BoogieIcfgContainer [2023-12-05 21:09:22,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:09:22,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:09:22,185 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:09:22,187 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:09:22,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:09:20" (1/3) ... [2023-12-05 21:09:22,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bdac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:09:22, skipping insertion in model container [2023-12-05 21:09:22,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:09:21" (2/3) ... [2023-12-05 21:09:22,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bdac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:09:22, skipping insertion in model container [2023-12-05 21:09:22,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:09:22" (3/3) ... [2023-12-05 21:09:22,189 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-12-05 21:09:22,204 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:09:22,204 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:09:22,204 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:09:22,243 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:09:22,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 121 transitions, 254 flow [2023-12-05 21:09:22,310 INFO L124 PetriNetUnfolderBase]: 3/118 cut-off events. [2023-12-05 21:09:22,310 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:09:22,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 118 events. 3/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2023-12-05 21:09:22,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 121 transitions, 254 flow [2023-12-05 21:09:22,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 72 transitions, 150 flow [2023-12-05 21:09:22,325 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:09:22,331 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;@d2d740c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:09:22,331 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:09:22,338 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:09:22,339 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2023-12-05 21:09:22,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:09:22,339 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:22,339 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] [2023-12-05 21:09:22,340 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:22,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1193232601, now seen corresponding path program 1 times [2023-12-05 21:09:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:22,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384599239] [2023-12-05 21:09:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:22,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:22,680 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 21:09:22,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:22,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384599239] [2023-12-05 21:09:22,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384599239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:22,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:22,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:22,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315211331] [2023-12-05 21:09:22,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:22,693 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:22,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:22,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:22,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:22,728 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 121 [2023-12-05 21:09:22,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 21:09:22,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:22,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 121 [2023-12-05 21:09:22,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:22,834 INFO L124 PetriNetUnfolderBase]: 20/136 cut-off events. [2023-12-05 21:09:22,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:09:22,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 136 events. 20/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 360 event pairs, 20 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 145. Up to 49 conditions per place. [2023-12-05 21:09:22,839 INFO L140 encePairwiseOnDemand]: 119/121 looper letters, 16 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-12-05 21:09:22,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 182 flow [2023-12-05 21:09:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:22,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:22,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-12-05 21:09:22,856 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7933884297520661 [2023-12-05 21:09:22,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-12-05 21:09:22,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-12-05 21:09:22,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:22,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-12-05 21:09:22,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 21:09:22,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:22,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 21:09:22,879 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2023-12-05 21:09:22,880 INFO L500 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 182 flow [2023-12-05 21:09:22,881 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 21:09:22,881 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:22,882 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] [2023-12-05 21:09:22,882 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:09:22,882 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:22,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:22,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1193232602, now seen corresponding path program 1 times [2023-12-05 21:09:22,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:22,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891726217] [2023-12-05 21:09:22,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:22,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:09:23,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:23,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891726217] [2023-12-05 21:09:23,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891726217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:23,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:23,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:23,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852918951] [2023-12-05 21:09:23,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:23,053 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:23,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:23,055 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 121 [2023-12-05 21:09:23,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:23,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 121 [2023-12-05 21:09:23,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:23,128 INFO L124 PetriNetUnfolderBase]: 28/155 cut-off events. [2023-12-05 21:09:23,128 INFO L125 PetriNetUnfolderBase]: For 29/31 co-relation queries the response was YES. [2023-12-05 21:09:23,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 155 events. 28/155 cut-off events. For 29/31 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 475 event pairs, 28 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 226. Up to 56 conditions per place. [2023-12-05 21:09:23,132 INFO L140 encePairwiseOnDemand]: 119/121 looper letters, 14 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-12-05 21:09:23,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 70 transitions, 208 flow [2023-12-05 21:09:23,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-12-05 21:09:23,135 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8126721763085399 [2023-12-05 21:09:23,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-12-05 21:09:23,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-12-05 21:09:23,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:23,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-12-05 21:09:23,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,139 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2023-12-05 21:09:23,139 INFO L500 AbstractCegarLoop]: Abstraction has has 81 places, 70 transitions, 208 flow [2023-12-05 21:09:23,139 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,139 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:23,140 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] [2023-12-05 21:09:23,140 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:09:23,140 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:23,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:23,141 INFO L85 PathProgramCache]: Analyzing trace with hash 57792183, now seen corresponding path program 1 times [2023-12-05 21:09:23,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:23,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688532247] [2023-12-05 21:09:23,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:23,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:09:23,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:23,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688532247] [2023-12-05 21:09:23,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688532247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:23,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:23,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:23,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488995502] [2023-12-05 21:09:23,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:23,228 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:23,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:23,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:23,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:23,230 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 121 [2023-12-05 21:09:23,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 70 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:23,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 121 [2023-12-05 21:09:23,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:23,281 INFO L124 PetriNetUnfolderBase]: 27/152 cut-off events. [2023-12-05 21:09:23,281 INFO L125 PetriNetUnfolderBase]: For 84/92 co-relation queries the response was YES. [2023-12-05 21:09:23,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 152 events. 27/152 cut-off events. For 84/92 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 458 event pairs, 12 based on Foata normal form. 2/150 useless extension candidates. Maximal degree in co-relation 271. Up to 55 conditions per place. [2023-12-05 21:09:23,298 INFO L140 encePairwiseOnDemand]: 119/121 looper letters, 16 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-12-05 21:09:23,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 244 flow [2023-12-05 21:09:23,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:23,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-12-05 21:09:23,300 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7933884297520661 [2023-12-05 21:09:23,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-12-05 21:09:23,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-12-05 21:09:23,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:23,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-12-05 21:09:23,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,304 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2023-12-05 21:09:23,305 INFO L500 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 244 flow [2023-12-05 21:09:23,305 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,305 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:23,305 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] [2023-12-05 21:09:23,305 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:09:23,306 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:23,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:23,306 INFO L85 PathProgramCache]: Analyzing trace with hash 57792184, now seen corresponding path program 1 times [2023-12-05 21:09:23,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:23,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765110232] [2023-12-05 21:09:23,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:23,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:09:23,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:23,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765110232] [2023-12-05 21:09:23,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765110232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:23,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:23,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:23,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97924774] [2023-12-05 21:09:23,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:23,398 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:23,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:23,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:23,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:23,399 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 121 [2023-12-05 21:09:23,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:23,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 121 [2023-12-05 21:09:23,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:23,465 INFO L124 PetriNetUnfolderBase]: 26/155 cut-off events. [2023-12-05 21:09:23,465 INFO L125 PetriNetUnfolderBase]: For 150/164 co-relation queries the response was YES. [2023-12-05 21:09:23,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 155 events. 26/155 cut-off events. For 150/164 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 471 event pairs, 25 based on Foata normal form. 4/155 useless extension candidates. Maximal degree in co-relation 316. Up to 52 conditions per place. [2023-12-05 21:09:23,469 INFO L140 encePairwiseOnDemand]: 119/121 looper letters, 14 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-12-05 21:09:23,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 69 transitions, 268 flow [2023-12-05 21:09:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-12-05 21:09:23,470 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8126721763085399 [2023-12-05 21:09:23,470 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-12-05 21:09:23,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-12-05 21:09:23,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:23,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-12-05 21:09:23,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,475 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 4 predicate places. [2023-12-05 21:09:23,475 INFO L500 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 268 flow [2023-12-05 21:09:23,476 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,476 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:23,476 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] [2023-12-05 21:09:23,476 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:09:23,477 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:23,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:23,477 INFO L85 PathProgramCache]: Analyzing trace with hash 782118708, now seen corresponding path program 1 times [2023-12-05 21:09:23,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:23,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933190374] [2023-12-05 21:09:23,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:23,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:09:23,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:23,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933190374] [2023-12-05 21:09:23,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933190374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:23,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:23,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:23,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698859587] [2023-12-05 21:09:23,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:23,561 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:23,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:23,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:23,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:23,563 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 121 [2023-12-05 21:09:23,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:23,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 121 [2023-12-05 21:09:23,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:23,621 INFO L124 PetriNetUnfolderBase]: 19/120 cut-off events. [2023-12-05 21:09:23,621 INFO L125 PetriNetUnfolderBase]: For 207/213 co-relation queries the response was YES. [2023-12-05 21:09:23,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 120 events. 19/120 cut-off events. For 207/213 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 288 event pairs, 0 based on Foata normal form. 6/126 useless extension candidates. Maximal degree in co-relation 283. Up to 45 conditions per place. [2023-12-05 21:09:23,622 INFO L140 encePairwiseOnDemand]: 119/121 looper letters, 18 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-12-05 21:09:23,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 71 transitions, 330 flow [2023-12-05 21:09:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:23,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-12-05 21:09:23,624 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7961432506887053 [2023-12-05 21:09:23,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-12-05 21:09:23,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-12-05 21:09:23,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:23,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-12-05 21:09:23,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,627 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,629 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2023-12-05 21:09:23,629 INFO L500 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 330 flow [2023-12-05 21:09:23,630 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,630 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:09:23,630 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] [2023-12-05 21:09:23,631 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:09:23,631 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:09:23,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:09:23,632 INFO L85 PathProgramCache]: Analyzing trace with hash 782118709, now seen corresponding path program 1 times [2023-12-05 21:09:23,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:09:23,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264832451] [2023-12-05 21:09:23,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:09:23,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:09:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:09:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:09:23,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:09:23,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264832451] [2023-12-05 21:09:23,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264832451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:09:23,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:09:23,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:09:23,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179376356] [2023-12-05 21:09:23,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:09:23,734 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:09:23,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:09:23,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:09:23,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:09:23,735 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 121 [2023-12-05 21:09:23,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:09:23,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 121 [2023-12-05 21:09:23,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:09:23,773 INFO L124 PetriNetUnfolderBase]: 12/107 cut-off events. [2023-12-05 21:09:23,773 INFO L125 PetriNetUnfolderBase]: For 263/273 co-relation queries the response was YES. [2023-12-05 21:09:23,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 107 events. 12/107 cut-off events. For 263/273 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 215 event pairs, 0 based on Foata normal form. 6/113 useless extension candidates. Maximal degree in co-relation 246. Up to 32 conditions per place. [2023-12-05 21:09:23,774 INFO L140 encePairwiseOnDemand]: 119/121 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2023-12-05 21:09:23,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 70 transitions, 356 flow [2023-12-05 21:09:23,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:09:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:09:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-12-05 21:09:23,776 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8154269972451791 [2023-12-05 21:09:23,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-12-05 21:09:23,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-12-05 21:09:23,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:09:23,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-12-05 21:09:23,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,781 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 6 predicate places. [2023-12-05 21:09:23,781 INFO L500 AbstractCegarLoop]: Abstraction has has 85 places, 70 transitions, 356 flow [2023-12-05 21:09:23,781 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:09:23,789 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe013_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i_BEv2_AllErrorsAtOnce [2023-12-05 21:09:23,820 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:09:23,821 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:09:23,821 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:09:23,821 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:09:23,821 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-12-05 21:09:23,821 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:09:23,822 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-12-05 21:09:23,822 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-12-05 21:09:23,822 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-12-05 21:09:23,822 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:09:23,823 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:09:23,825 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:09:23,825 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:09:23,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:09:23 BasicIcfg [2023-12-05 21:09:23,831 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:09:23,832 INFO L158 Benchmark]: Toolchain (without parser) took 3094.07ms. Allocated memory is still 288.4MB. Free memory was 236.8MB in the beginning and 150.9MB in the end (delta: 85.9MB). Peak memory consumption was 86.4MB. Max. memory is 8.0GB. [2023-12-05 21:09:23,832 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 206.6MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:09:23,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 577.58ms. Allocated memory is still 288.4MB. Free memory was 236.8MB in the beginning and 213.2MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-05 21:09:23,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.00ms. Allocated memory is still 288.4MB. Free memory was 213.2MB in the beginning and 211.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:09:23,833 INFO L158 Benchmark]: Boogie Preprocessor took 65.17ms. Allocated memory is still 288.4MB. Free memory was 211.1MB in the beginning and 209.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:09:23,834 INFO L158 Benchmark]: RCFGBuilder took 727.12ms. Allocated memory is still 288.4MB. Free memory was 209.0MB in the beginning and 238.4MB in the end (delta: -29.4MB). Peak memory consumption was 28.8MB. Max. memory is 8.0GB. [2023-12-05 21:09:23,834 INFO L158 Benchmark]: TraceAbstraction took 1646.72ms. Allocated memory is still 288.4MB. Free memory was 237.9MB in the beginning and 150.9MB in the end (delta: 87.0MB). Peak memory consumption was 87.0MB. Max. memory is 8.0GB. [2023-12-05 21:09:23,836 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 206.6MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 577.58ms. Allocated memory is still 288.4MB. Free memory was 236.8MB in the beginning and 213.2MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 69.00ms. Allocated memory is still 288.4MB. Free memory was 213.2MB in the beginning and 211.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 65.17ms. Allocated memory is still 288.4MB. Free memory was 211.1MB in the beginning and 209.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 727.12ms. Allocated memory is still 288.4MB. Free memory was 209.0MB in the beginning and 238.4MB in the end (delta: -29.4MB). Peak memory consumption was 28.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1646.72ms. Allocated memory is still 288.4MB. Free memory was 237.9MB in the beginning and 150.9MB in the end (delta: 87.0MB). Peak memory consumption was 87.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 147 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105 IncrementalHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 105 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=356occurred in iteration=6, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 264 ConstructedInterpolants, 0 QuantifiedInterpolants, 372 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:09:23,853 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...