/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/mix027_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:07:22,987 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:07:23,062 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 21:07:23,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:07:23,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:07:23,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:07:23,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:07:23,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:07:23,095 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:07:23,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:07:23,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:07:23,098 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:07:23,098 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:07:23,099 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:07:23,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:07:23,099 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:07:23,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:07:23,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:07:23,100 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:07:23,100 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:07:23,100 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:07:23,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:07:23,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:07:23,101 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:07:23,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:07:23,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:07:23,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:07:23,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:07:23,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:07:23,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:07:23,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:07:23,104 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:07:23,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:07:23,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:07:23,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:07:23,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:07:23,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:07:23,325 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:07:23,325 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:07:23,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix027_tso.i [2023-12-05 21:07:24,403 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:07:24,632 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:07:24,633 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_tso.i [2023-12-05 21:07:24,644 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/753536db0/64ba54af3d484c879a59ba081eabbff4/FLAG14e425a96 [2023-12-05 21:07:24,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/753536db0/64ba54af3d484c879a59ba081eabbff4 [2023-12-05 21:07:24,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:07:24,656 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:07:24,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:07:24,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:07:24,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:07:24,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:07:24" (1/1) ... [2023-12-05 21:07:24,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5471299f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:24, skipping insertion in model container [2023-12-05 21:07:24,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:07:24" (1/1) ... [2023-12-05 21:07:24,716 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:07:25,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:07:25,065 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:07:25,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:07:25,163 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:07:25,163 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:07:25,168 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:07:25,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:25 WrapperNode [2023-12-05 21:07:25,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:07:25,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:07:25,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:07:25,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:07:25,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:25" (1/1) ... [2023-12-05 21:07:25,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:25" (1/1) ... [2023-12-05 21:07:25,236 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 166 [2023-12-05 21:07:25,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:07:25,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:07:25,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:07:25,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:07:25,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:25" (1/1) ... [2023-12-05 21:07:25,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:25" (1/1) ... [2023-12-05 21:07:25,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:25" (1/1) ... [2023-12-05 21:07:25,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:25" (1/1) ... [2023-12-05 21:07:25,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:25" (1/1) ... [2023-12-05 21:07:25,269 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:25" (1/1) ... [2023-12-05 21:07:25,271 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:25" (1/1) ... [2023-12-05 21:07:25,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:25" (1/1) ... [2023-12-05 21:07:25,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:07:25,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:07:25,275 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:07:25,275 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:07:25,275 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:25" (1/1) ... [2023-12-05 21:07:25,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:07:25,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:07:25,312 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 21:07:25,331 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 21:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:07:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:07:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:07:25,340 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:07:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:07:25,340 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:07:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:07:25,340 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:07:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-12-05 21:07:25,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-12-05 21:07:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:07:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:07:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:07:25,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:07:25,343 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 21:07:25,444 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:07:25,445 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:07:25,726 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:07:25,834 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:07:25,834 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:07:25,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:07:25 BoogieIcfgContainer [2023-12-05 21:07:25,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:07:25,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:07:25,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:07:25,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:07:25,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:07:24" (1/3) ... [2023-12-05 21:07:25,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d143a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:07:25, skipping insertion in model container [2023-12-05 21:07:25,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:25" (2/3) ... [2023-12-05 21:07:25,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d143a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:07:25, skipping insertion in model container [2023-12-05 21:07:25,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:07:25" (3/3) ... [2023-12-05 21:07:25,842 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_tso.i [2023-12-05 21:07:25,854 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:07:25,855 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-05 21:07:25,855 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:07:25,897 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:07:25,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 144 transitions, 304 flow [2023-12-05 21:07:25,994 INFO L124 PetriNetUnfolderBase]: 3/140 cut-off events. [2023-12-05 21:07:25,995 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:07:26,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 140 events. 3/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-12-05 21:07:26,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 144 transitions, 304 flow [2023-12-05 21:07:26,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 91 transitions, 191 flow [2023-12-05 21:07:26,015 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:07:26,023 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;@2f0f163d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:07:26,023 INFO L363 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-12-05 21:07:26,033 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:07:26,033 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2023-12-05 21:07:26,033 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:07:26,033 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:26,034 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:07:26,034 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:26,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:26,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2060111409, now seen corresponding path program 1 times [2023-12-05 21:07:26,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:26,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177674126] [2023-12-05 21:07:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:26,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:26,318 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 21:07:26,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:26,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177674126] [2023-12-05 21:07:26,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177674126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:26,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:26,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:26,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694904302] [2023-12-05 21:07:26,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:26,326 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:26,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:26,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:26,354 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 144 [2023-12-05 21:07:26,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 91 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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 21:07:26,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:26,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 144 [2023-12-05 21:07:26,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:26,494 INFO L124 PetriNetUnfolderBase]: 81/334 cut-off events. [2023-12-05 21:07:26,495 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-05 21:07:26,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 334 events. 81/334 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1589 event pairs, 81 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 454. Up to 152 conditions per place. [2023-12-05 21:07:26,500 INFO L140 encePairwiseOnDemand]: 142/144 looper letters, 21 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-12-05 21:07:26,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 90 transitions, 233 flow [2023-12-05 21:07:26,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2023-12-05 21:07:26,515 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7893518518518519 [2023-12-05 21:07:26,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2023-12-05 21:07:26,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2023-12-05 21:07:26,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:26,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2023-12-05 21:07:26,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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 21:07:26,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:26,530 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:26,534 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 1 predicate places. [2023-12-05 21:07:26,535 INFO L500 AbstractCegarLoop]: Abstraction has has 102 places, 90 transitions, 233 flow [2023-12-05 21:07:26,535 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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 21:07:26,535 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:26,536 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:07:26,536 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:07:26,536 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:26,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:26,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2060111410, now seen corresponding path program 1 times [2023-12-05 21:07:26,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:26,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246684999] [2023-12-05 21:07:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:26,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:26,674 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 21:07:26,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:26,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246684999] [2023-12-05 21:07:26,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246684999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:26,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:26,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:26,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510281494] [2023-12-05 21:07:26,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:26,677 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:26,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:26,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:26,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:26,680 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 144 [2023-12-05 21:07:26,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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 21:07:26,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:26,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 144 [2023-12-05 21:07:26,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:26,803 INFO L124 PetriNetUnfolderBase]: 109/373 cut-off events. [2023-12-05 21:07:26,803 INFO L125 PetriNetUnfolderBase]: For 90/94 co-relation queries the response was YES. [2023-12-05 21:07:26,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 373 events. 109/373 cut-off events. For 90/94 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1865 event pairs, 109 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 698. Up to 179 conditions per place. [2023-12-05 21:07:26,806 INFO L140 encePairwiseOnDemand]: 142/144 looper letters, 19 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-12-05 21:07:26,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 89 transitions, 269 flow [2023-12-05 21:07:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:26,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:26,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-12-05 21:07:26,807 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8125 [2023-12-05 21:07:26,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-12-05 21:07:26,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-12-05 21:07:26,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:26,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-12-05 21:07:26,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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 21:07:26,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:26,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:26,810 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 2 predicate places. [2023-12-05 21:07:26,811 INFO L500 AbstractCegarLoop]: Abstraction has has 103 places, 89 transitions, 269 flow [2023-12-05 21:07:26,811 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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 21:07:26,811 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:26,811 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] [2023-12-05 21:07:26,811 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:07:26,811 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:26,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:26,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2130495868, now seen corresponding path program 1 times [2023-12-05 21:07:26,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:26,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230049948] [2023-12-05 21:07:26,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:26,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:26,878 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 21:07:26,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:26,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230049948] [2023-12-05 21:07:26,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230049948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:26,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:26,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:26,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250673417] [2023-12-05 21:07:26,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:26,879 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:26,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:26,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:26,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:26,881 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 144 [2023-12-05 21:07:26,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 89 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 21:07:26,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:26,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 144 [2023-12-05 21:07:26,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:26,958 INFO L124 PetriNetUnfolderBase]: 108/370 cut-off events. [2023-12-05 21:07:26,959 INFO L125 PetriNetUnfolderBase]: For 231/243 co-relation queries the response was YES. [2023-12-05 21:07:26,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 937 conditions, 370 events. 108/370 cut-off events. For 231/243 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1841 event pairs, 66 based on Foata normal form. 2/366 useless extension candidates. Maximal degree in co-relation 866. Up to 178 conditions per place. [2023-12-05 21:07:26,964 INFO L140 encePairwiseOnDemand]: 142/144 looper letters, 20 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-12-05 21:07:26,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 89 transitions, 313 flow [2023-12-05 21:07:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:26,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:26,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2023-12-05 21:07:26,966 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2023-12-05 21:07:26,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2023-12-05 21:07:26,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2023-12-05 21:07:26,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:26,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2023-12-05 21:07:26,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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 21:07:26,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:26,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:26,969 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 3 predicate places. [2023-12-05 21:07:26,970 INFO L500 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 313 flow [2023-12-05 21:07:26,970 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 21:07:26,970 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:26,970 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] [2023-12-05 21:07:26,970 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:07:26,970 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:26,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:26,971 INFO L85 PathProgramCache]: Analyzing trace with hash 2130495867, now seen corresponding path program 1 times [2023-12-05 21:07:26,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:26,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985581819] [2023-12-05 21:07:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:26,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:27,021 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 21:07:27,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:27,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985581819] [2023-12-05 21:07:27,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985581819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:27,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:27,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:27,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750506486] [2023-12-05 21:07:27,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:27,023 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:27,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:27,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:27,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:27,026 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 144 [2023-12-05 21:07:27,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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 21:07:27,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:27,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 144 [2023-12-05 21:07:27,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:27,118 INFO L124 PetriNetUnfolderBase]: 107/367 cut-off events. [2023-12-05 21:07:27,118 INFO L125 PetriNetUnfolderBase]: For 408/428 co-relation queries the response was YES. [2023-12-05 21:07:27,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 367 events. 107/367 cut-off events. For 408/428 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1824 event pairs, 66 based on Foata normal form. 2/363 useless extension candidates. Maximal degree in co-relation 1028. Up to 175 conditions per place. [2023-12-05 21:07:27,121 INFO L140 encePairwiseOnDemand]: 142/144 looper letters, 20 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-12-05 21:07:27,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 88 transitions, 349 flow [2023-12-05 21:07:27,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:27,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-12-05 21:07:27,122 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7870370370370371 [2023-12-05 21:07:27,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-12-05 21:07:27,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-12-05 21:07:27,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:27,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-12-05 21:07:27,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 21:07:27,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:27,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:27,126 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 4 predicate places. [2023-12-05 21:07:27,127 INFO L500 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 349 flow [2023-12-05 21:07:27,127 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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 21:07:27,127 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:27,127 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] [2023-12-05 21:07:27,127 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:07:27,128 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:27,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:27,128 INFO L85 PathProgramCache]: Analyzing trace with hash 642123129, now seen corresponding path program 1 times [2023-12-05 21:07:27,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:27,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584875374] [2023-12-05 21:07:27,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:27,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:27,225 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 21:07:27,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:27,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584875374] [2023-12-05 21:07:27,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584875374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:27,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:27,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:27,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603403729] [2023-12-05 21:07:27,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:27,226 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:27,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:27,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:27,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:27,227 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 144 [2023-12-05 21:07:27,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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 21:07:27,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:27,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 144 [2023-12-05 21:07:27,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:27,317 INFO L124 PetriNetUnfolderBase]: 100/330 cut-off events. [2023-12-05 21:07:27,317 INFO L125 PetriNetUnfolderBase]: For 605/605 co-relation queries the response was YES. [2023-12-05 21:07:27,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 330 events. 100/330 cut-off events. For 605/605 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1504 event pairs, 18 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 1116. Up to 168 conditions per place. [2023-12-05 21:07:27,320 INFO L140 encePairwiseOnDemand]: 142/144 looper letters, 22 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-12-05 21:07:27,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 90 transitions, 419 flow [2023-12-05 21:07:27,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:27,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2023-12-05 21:07:27,321 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8171296296296297 [2023-12-05 21:07:27,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2023-12-05 21:07:27,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2023-12-05 21:07:27,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:27,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2023-12-05 21:07:27,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 21:07:27,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:27,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:27,326 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 5 predicate places. [2023-12-05 21:07:27,326 INFO L500 AbstractCegarLoop]: Abstraction has has 106 places, 90 transitions, 419 flow [2023-12-05 21:07:27,326 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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 21:07:27,326 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:27,327 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] [2023-12-05 21:07:27,327 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:07:27,328 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:27,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:27,330 INFO L85 PathProgramCache]: Analyzing trace with hash 642123128, now seen corresponding path program 1 times [2023-12-05 21:07:27,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:27,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477049854] [2023-12-05 21:07:27,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:27,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:27,398 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 21:07:27,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:27,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477049854] [2023-12-05 21:07:27,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477049854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:27,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:27,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:27,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786173115] [2023-12-05 21:07:27,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:27,403 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:27,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:27,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:27,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:27,405 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 144 [2023-12-05 21:07:27,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 90 transitions, 419 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 21:07:27,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:27,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 144 [2023-12-05 21:07:27,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:27,491 INFO L124 PetriNetUnfolderBase]: 93/317 cut-off events. [2023-12-05 21:07:27,491 INFO L125 PetriNetUnfolderBase]: For 828/828 co-relation queries the response was YES. [2023-12-05 21:07:27,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1296 conditions, 317 events. 93/317 cut-off events. For 828/828 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1382 event pairs, 18 based on Foata normal form. 6/323 useless extension candidates. Maximal degree in co-relation 1202. Up to 155 conditions per place. [2023-12-05 21:07:27,494 INFO L140 encePairwiseOnDemand]: 142/144 looper letters, 22 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-12-05 21:07:27,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 89 transitions, 457 flow [2023-12-05 21:07:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:27,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:27,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2023-12-05 21:07:27,495 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7893518518518519 [2023-12-05 21:07:27,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2023-12-05 21:07:27,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2023-12-05 21:07:27,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:27,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2023-12-05 21:07:27,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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 21:07:27,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:27,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:27,499 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 6 predicate places. [2023-12-05 21:07:27,500 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 89 transitions, 457 flow [2023-12-05 21:07:27,500 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 21:07:27,500 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:27,500 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] [2023-12-05 21:07:27,500 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:07:27,501 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:27,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:27,501 INFO L85 PathProgramCache]: Analyzing trace with hash 266939726, now seen corresponding path program 1 times [2023-12-05 21:07:27,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:27,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043355685] [2023-12-05 21:07:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:27,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:27,547 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 21:07:27,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:27,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043355685] [2023-12-05 21:07:27,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043355685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:27,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:27,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:27,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141928587] [2023-12-05 21:07:27,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:27,549 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:27,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:27,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:27,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:27,552 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 144 [2023-12-05 21:07:27,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 89 transitions, 457 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 21:07:27,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:27,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 144 [2023-12-05 21:07:27,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:27,611 INFO L124 PetriNetUnfolderBase]: 73/285 cut-off events. [2023-12-05 21:07:27,611 INFO L125 PetriNetUnfolderBase]: For 936/936 co-relation queries the response was YES. [2023-12-05 21:07:27,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 285 events. 73/285 cut-off events. For 936/936 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1200 event pairs, 0 based on Foata normal form. 12/297 useless extension candidates. Maximal degree in co-relation 1146. Up to 135 conditions per place. [2023-12-05 21:07:27,615 INFO L140 encePairwiseOnDemand]: 142/144 looper letters, 26 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2023-12-05 21:07:27,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 92 transitions, 559 flow [2023-12-05 21:07:27,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:27,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-12-05 21:07:27,617 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2023-12-05 21:07:27,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-12-05 21:07:27,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-12-05 21:07:27,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:27,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-12-05 21:07:27,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 21:07:27,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:27,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:27,619 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 7 predicate places. [2023-12-05 21:07:27,619 INFO L500 AbstractCegarLoop]: Abstraction has has 108 places, 92 transitions, 559 flow [2023-12-05 21:07:27,620 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 21:07:27,620 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:27,620 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] [2023-12-05 21:07:27,620 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-05 21:07:27,620 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:27,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash 266939727, now seen corresponding path program 1 times [2023-12-05 21:07:27,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:27,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382565240] [2023-12-05 21:07:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:27,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:27,701 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 21:07:27,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:27,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382565240] [2023-12-05 21:07:27,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382565240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:27,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:27,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:27,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522613035] [2023-12-05 21:07:27,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:27,703 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:27,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:27,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:27,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:27,704 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 144 [2023-12-05 21:07:27,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 92 transitions, 559 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 21:07:27,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:27,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 144 [2023-12-05 21:07:27,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:27,761 INFO L124 PetriNetUnfolderBase]: 53/253 cut-off events. [2023-12-05 21:07:27,761 INFO L125 PetriNetUnfolderBase]: For 1016/1016 co-relation queries the response was YES. [2023-12-05 21:07:27,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 253 events. 53/253 cut-off events. For 1016/1016 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1020 event pairs, 0 based on Foata normal form. 12/265 useless extension candidates. Maximal degree in co-relation 1026. Up to 103 conditions per place. [2023-12-05 21:07:27,762 INFO L140 encePairwiseOnDemand]: 142/144 looper letters, 0 selfloop transitions, 0 changer transitions 91/91 dead transitions. [2023-12-05 21:07:27,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 91 transitions, 599 flow [2023-12-05 21:07:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:27,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:27,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2023-12-05 21:07:27,764 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2023-12-05 21:07:27,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2023-12-05 21:07:27,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2023-12-05 21:07:27,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:27,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2023-12-05 21:07:27,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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 21:07:27,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:27,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 21:07:27,770 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 8 predicate places. [2023-12-05 21:07:27,770 INFO L500 AbstractCegarLoop]: Abstraction has has 109 places, 91 transitions, 599 flow [2023-12-05 21:07:27,771 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 21:07:27,777 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mix027_tso.i_BEv2_AllErrorsAtOnce [2023-12-05 21:07:27,809 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-12-05 21:07:27,809 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-12-05 21:07:27,811 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-12-05 21:07:27,811 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-12-05 21:07:27,811 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-12-05 21:07:27,812 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-12-05 21:07:27,813 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-12-05 21:07:27,813 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-12-05 21:07:27,813 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2023-12-05 21:07:27,813 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2023-12-05 21:07:27,813 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-12-05 21:07:27,813 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-12-05 21:07:27,813 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-05 21:07:27,814 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:07:27,817 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:07:27,817 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:07:27,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:07:27 BasicIcfg [2023-12-05 21:07:27,822 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:07:27,823 INFO L158 Benchmark]: Toolchain (without parser) took 3166.40ms. Allocated memory was 263.2MB in the beginning and 319.8MB in the end (delta: 56.6MB). Free memory was 209.6MB in the beginning and 122.7MB in the end (delta: 86.9MB). Peak memory consumption was 144.5MB. Max. memory is 8.0GB. [2023-12-05 21:07:27,823 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 190.8MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:07:27,823 INFO L158 Benchmark]: CACSL2BoogieTranslator took 511.61ms. Allocated memory is still 263.2MB. Free memory was 209.0MB in the beginning and 184.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-05 21:07:27,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.72ms. Allocated memory is still 263.2MB. Free memory was 184.9MB in the beginning and 181.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-05 21:07:27,824 INFO L158 Benchmark]: Boogie Preprocessor took 36.93ms. Allocated memory is still 263.2MB. Free memory was 181.8MB in the beginning and 179.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:07:27,824 INFO L158 Benchmark]: RCFGBuilder took 561.16ms. Allocated memory is still 263.2MB. Free memory was 179.7MB in the beginning and 201.6MB in the end (delta: -22.0MB). Peak memory consumption was 22.6MB. Max. memory is 8.0GB. [2023-12-05 21:07:27,825 INFO L158 Benchmark]: TraceAbstraction took 1985.10ms. Allocated memory was 263.2MB in the beginning and 319.8MB in the end (delta: 56.6MB). Free memory was 200.6MB in the beginning and 122.7MB in the end (delta: 77.9MB). Peak memory consumption was 134.5MB. Max. memory is 8.0GB. [2023-12-05 21:07:27,826 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 190.8MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 511.61ms. Allocated memory is still 263.2MB. Free memory was 209.0MB in the beginning and 184.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.72ms. Allocated memory is still 263.2MB. Free memory was 184.9MB in the beginning and 181.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.93ms. Allocated memory is still 263.2MB. Free memory was 181.8MB in the beginning and 179.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 561.16ms. Allocated memory is still 263.2MB. Free memory was 179.7MB in the beginning and 201.6MB in the end (delta: -22.0MB). Peak memory consumption was 22.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1985.10ms. Allocated memory was 263.2MB in the beginning and 319.8MB in the end (delta: 56.6MB). Free memory was 200.6MB in the beginning and 122.7MB in the end (delta: 77.9MB). Peak memory consumption was 134.5MB. 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 179 locations, 12 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: 1.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 192 IncrementalHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 60 mSDtfsCounter, 192 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=599occurred in iteration=8, InterpolantAutomatonStates: 24, 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, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 412 ConstructedInterpolants, 0 QuantifiedInterpolants, 556 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:07:27,844 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...