/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/weaver/chl-exp-term-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:19:36,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:19:36,253 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 21:19:36,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:19:36,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:19:36,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:19:36,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:19:36,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:19:36,286 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:19:36,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:19:36,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:19:36,290 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:19:36,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:19:36,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:19:36,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:19:36,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:19:36,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:19:36,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:19:36,292 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:19:36,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:19:36,293 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:19:36,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:19:36,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:19:36,294 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:19:36,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:19:36,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:19:36,295 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:19:36,295 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:19:36,295 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:19:36,295 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:19:36,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:19:36,296 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:19:36,297 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:19:36,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:19:36,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:19:36,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:19:36,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:19:36,520 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:19:36,520 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:19:36,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-exp-term-symm.wvr.c [2023-12-05 21:19:37,670 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:19:37,840 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:19:37,841 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-exp-term-symm.wvr.c [2023-12-05 21:19:37,847 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17291803f/09897e75b1324097b7fbf5f62ac582c3/FLAGed1965f6b [2023-12-05 21:19:37,863 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17291803f/09897e75b1324097b7fbf5f62ac582c3 [2023-12-05 21:19:37,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:19:37,866 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:19:37,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:19:37,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:19:37,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:19:37,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:19:37" (1/1) ... [2023-12-05 21:19:37,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d3eae75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:37, skipping insertion in model container [2023-12-05 21:19:37,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:19:37" (1/1) ... [2023-12-05 21:19:37,897 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:19:38,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:19:38,058 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:19:38,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:19:38,091 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:19:38,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:38 WrapperNode [2023-12-05 21:19:38,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:19:38,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:19:38,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:19:38,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:19:38,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:38" (1/1) ... [2023-12-05 21:19:38,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:38" (1/1) ... [2023-12-05 21:19:38,124 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 135 [2023-12-05 21:19:38,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:19:38,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:19:38,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:19:38,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:19:38,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:38" (1/1) ... [2023-12-05 21:19:38,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:38" (1/1) ... [2023-12-05 21:19:38,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:38" (1/1) ... [2023-12-05 21:19:38,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:38" (1/1) ... [2023-12-05 21:19:38,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:38" (1/1) ... [2023-12-05 21:19:38,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:38" (1/1) ... [2023-12-05 21:19:38,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:38" (1/1) ... [2023-12-05 21:19:38,145 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:38" (1/1) ... [2023-12-05 21:19:38,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:19:38,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:19:38,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:19:38,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:19:38,149 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:38" (1/1) ... [2023-12-05 21:19:38,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:19:38,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:19:38,178 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 21:19:38,192 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 21:19:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:19:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-05 21:19:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-05 21:19:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-05 21:19:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-05 21:19:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:19:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:19:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:19:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:19:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:19:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:19:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:19:38,212 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 21:19:38,284 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:19:38,286 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:19:38,600 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:19:38,611 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:19:38,611 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:19:38,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:19:38 BoogieIcfgContainer [2023-12-05 21:19:38,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:19:38,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:19:38,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:19:38,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:19:38,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:19:37" (1/3) ... [2023-12-05 21:19:38,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13afe508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:19:38, skipping insertion in model container [2023-12-05 21:19:38,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:38" (2/3) ... [2023-12-05 21:19:38,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13afe508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:19:38, skipping insertion in model container [2023-12-05 21:19:38,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:19:38" (3/3) ... [2023-12-05 21:19:38,619 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2023-12-05 21:19:38,637 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:19:38,637 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-05 21:19:38,637 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:19:38,773 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-05 21:19:38,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 186 transitions, 386 flow [2023-12-05 21:19:38,943 INFO L124 PetriNetUnfolderBase]: 13/184 cut-off events. [2023-12-05 21:19:38,943 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-05 21:19:38,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 13/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 328 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-12-05 21:19:38,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 186 transitions, 386 flow [2023-12-05 21:19:38,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 146 transitions, 301 flow [2023-12-05 21:19:38,980 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:19:38,989 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;@75e7b7c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:19:38,989 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-12-05 21:19:39,003 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:19:39,004 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-12-05 21:19:39,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:19:39,004 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:19:39,005 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] [2023-12-05 21:19:39,006 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:19:39,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:19:39,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1805097098, now seen corresponding path program 1 times [2023-12-05 21:19:39,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:19:39,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108603266] [2023-12-05 21:19:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:19:39,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:19:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:19:39,391 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 21:19:39,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:19:39,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108603266] [2023-12-05 21:19:39,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108603266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:19:39,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:19:39,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:19:39,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089592739] [2023-12-05 21:19:39,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:19:39,405 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:19:39,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:19:39,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:19:39,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:19:39,430 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 186 [2023-12-05 21:19:39,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 146 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 21:19:39,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:19:39,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 186 [2023-12-05 21:19:39,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:19:39,492 INFO L124 PetriNetUnfolderBase]: 6/140 cut-off events. [2023-12-05 21:19:39,492 INFO L125 PetriNetUnfolderBase]: For 8/13 co-relation queries the response was YES. [2023-12-05 21:19:39,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 140 events. 6/140 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 287 event pairs, 0 based on Foata normal form. 7/133 useless extension candidates. Maximal degree in co-relation 107. Up to 13 conditions per place. [2023-12-05 21:19:39,497 INFO L140 encePairwiseOnDemand]: 179/186 looper letters, 16 selfloop transitions, 1 changer transitions 0/140 dead transitions. [2023-12-05 21:19:39,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 140 transitions, 323 flow [2023-12-05 21:19:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:19:39,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:19:39,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-12-05 21:19:39,514 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8691756272401434 [2023-12-05 21:19:39,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-12-05 21:19:39,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-12-05 21:19:39,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:19:39,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-12-05 21:19:39,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 21:19:39,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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 21:19:39,530 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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 21:19:39,533 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 0 predicate places. [2023-12-05 21:19:39,534 INFO L500 AbstractCegarLoop]: Abstraction has has 143 places, 140 transitions, 323 flow [2023-12-05 21:19:39,534 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 21:19:39,534 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:19:39,534 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] [2023-12-05 21:19:39,534 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:19:39,535 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:19:39,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:19:39,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1805097097, now seen corresponding path program 1 times [2023-12-05 21:19:39,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:19:39,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136114963] [2023-12-05 21:19:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:19:39,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:19:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:19:39,718 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 21:19:39,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:19:39,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136114963] [2023-12-05 21:19:39,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136114963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:19:39,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:19:39,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 21:19:39,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317341325] [2023-12-05 21:19:39,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:19:39,721 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 21:19:39,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:19:39,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 21:19:39,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-05 21:19:39,724 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 186 [2023-12-05 21:19:39,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 140 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 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 21:19:39,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:19:39,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 186 [2023-12-05 21:19:39,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:19:39,799 INFO L124 PetriNetUnfolderBase]: 6/138 cut-off events. [2023-12-05 21:19:39,799 INFO L125 PetriNetUnfolderBase]: For 28/57 co-relation queries the response was YES. [2023-12-05 21:19:39,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 138 events. 6/138 cut-off events. For 28/57 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 280 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 110. Up to 13 conditions per place. [2023-12-05 21:19:39,802 INFO L140 encePairwiseOnDemand]: 183/186 looper letters, 16 selfloop transitions, 1 changer transitions 0/138 dead transitions. [2023-12-05 21:19:39,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 138 transitions, 349 flow [2023-12-05 21:19:39,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:19:39,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:19:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-12-05 21:19:39,805 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8512544802867383 [2023-12-05 21:19:39,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-12-05 21:19:39,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-12-05 21:19:39,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:19:39,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-12-05 21:19:39,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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 21:19:39,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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 21:19:39,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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 21:19:39,809 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 0 predicate places. [2023-12-05 21:19:39,809 INFO L500 AbstractCegarLoop]: Abstraction has has 143 places, 138 transitions, 349 flow [2023-12-05 21:19:39,810 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 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 21:19:39,810 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:19:39,810 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] [2023-12-05 21:19:39,810 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:19:39,811 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:19:39,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:19:39,811 INFO L85 PathProgramCache]: Analyzing trace with hash 36310589, now seen corresponding path program 1 times [2023-12-05 21:19:39,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:19:39,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666517935] [2023-12-05 21:19:39,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:19:39,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:19:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:19:39,930 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 21:19:39,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:19:39,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666517935] [2023-12-05 21:19:39,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666517935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:19:39,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:19:39,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:19:39,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234629546] [2023-12-05 21:19:39,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:19:39,932 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:19:39,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:19:39,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:19:39,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:19:39,934 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 186 [2023-12-05 21:19:39,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 138 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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 21:19:39,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:19:39,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 186 [2023-12-05 21:19:39,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:19:39,999 INFO L124 PetriNetUnfolderBase]: 6/136 cut-off events. [2023-12-05 21:19:40,001 INFO L125 PetriNetUnfolderBase]: For 57/101 co-relation queries the response was YES. [2023-12-05 21:19:40,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 136 events. 6/136 cut-off events. For 57/101 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 268 event pairs, 0 based on Foata normal form. 2/126 useless extension candidates. Maximal degree in co-relation 115. Up to 11 conditions per place. [2023-12-05 21:19:40,004 INFO L140 encePairwiseOnDemand]: 183/186 looper letters, 13 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2023-12-05 21:19:40,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 369 flow [2023-12-05 21:19:40,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:19:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:19:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2023-12-05 21:19:40,011 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8673835125448028 [2023-12-05 21:19:40,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2023-12-05 21:19:40,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2023-12-05 21:19:40,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:19:40,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2023-12-05 21:19:40,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:40,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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 21:19:40,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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 21:19:40,015 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 0 predicate places. [2023-12-05 21:19:40,016 INFO L500 AbstractCegarLoop]: Abstraction has has 143 places, 136 transitions, 369 flow [2023-12-05 21:19:40,016 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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 21:19:40,016 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:19:40,016 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] [2023-12-05 21:19:40,016 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:19:40,017 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:19:40,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:19:40,017 INFO L85 PathProgramCache]: Analyzing trace with hash 36310588, now seen corresponding path program 1 times [2023-12-05 21:19:40,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:19:40,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560725938] [2023-12-05 21:19:40,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:19:40,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:19:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:19:40,086 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 21:19:40,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:19:40,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560725938] [2023-12-05 21:19:40,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560725938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:19:40,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:19:40,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:19:40,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313341228] [2023-12-05 21:19:40,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:19:40,088 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:19:40,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:19:40,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:19:40,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:19:40,089 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 186 [2023-12-05 21:19:40,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 136 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 21:19:40,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:19:40,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 186 [2023-12-05 21:19:40,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:19:40,125 INFO L124 PetriNetUnfolderBase]: 6/134 cut-off events. [2023-12-05 21:19:40,126 INFO L125 PetriNetUnfolderBase]: For 87/126 co-relation queries the response was YES. [2023-12-05 21:19:40,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 134 events. 6/134 cut-off events. For 87/126 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 256 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 120. Up to 9 conditions per place. [2023-12-05 21:19:40,127 INFO L140 encePairwiseOnDemand]: 183/186 looper letters, 0 selfloop transitions, 0 changer transitions 134/134 dead transitions. [2023-12-05 21:19:40,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 134 transitions, 379 flow [2023-12-05 21:19:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:19:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:19:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-12-05 21:19:40,129 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8548387096774194 [2023-12-05 21:19:40,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-12-05 21:19:40,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-12-05 21:19:40,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:19:40,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-12-05 21:19:40,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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 21:19:40,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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 21:19:40,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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 21:19:40,134 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 0 predicate places. [2023-12-05 21:19:40,135 INFO L500 AbstractCegarLoop]: Abstraction has has 143 places, 134 transitions, 379 flow [2023-12-05 21:19:40,135 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 21:19:40,147 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/chl-exp-term-symm.wvr.c_BEv2_AllErrorsAtOnce [2023-12-05 21:19:40,175 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-12-05 21:19:40,176 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-12-05 21:19:40,176 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-12-05 21:19:40,177 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-12-05 21:19:40,177 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-12-05 21:19:40,177 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-12-05 21:19:40,177 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-12-05 21:19:40,178 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-12-05 21:19:40,178 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-12-05 21:19:40,178 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-12-05 21:19:40,178 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:19:40,178 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-05 21:19:40,182 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:19:40,182 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:19:40,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:19:40 BasicIcfg [2023-12-05 21:19:40,192 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:19:40,192 INFO L158 Benchmark]: Toolchain (without parser) took 2326.08ms. Allocated memory is still 274.7MB. Free memory was 223.7MB in the beginning and 206.0MB in the end (delta: 17.7MB). Peak memory consumption was 18.3MB. Max. memory is 8.0GB. [2023-12-05 21:19:40,192 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 192.9MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:19:40,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.15ms. Allocated memory is still 274.7MB. Free memory was 223.3MB in the beginning and 212.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-05 21:19:40,193 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.98ms. Allocated memory is still 274.7MB. Free memory was 212.2MB in the beginning and 210.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:19:40,195 INFO L158 Benchmark]: Boogie Preprocessor took 23.26ms. Allocated memory is still 274.7MB. Free memory was 210.2MB in the beginning and 208.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-05 21:19:40,199 INFO L158 Benchmark]: RCFGBuilder took 464.35ms. Allocated memory is still 274.7MB. Free memory was 208.8MB in the beginning and 190.3MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-05 21:19:40,200 INFO L158 Benchmark]: TraceAbstraction took 1577.53ms. Allocated memory is still 274.7MB. Free memory was 189.7MB in the beginning and 206.0MB in the end (delta: -16.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:19:40,202 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 192.9MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 224.15ms. Allocated memory is still 274.7MB. Free memory was 223.3MB in the beginning and 212.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.98ms. Allocated memory is still 274.7MB. Free memory was 212.2MB in the beginning and 210.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.26ms. Allocated memory is still 274.7MB. Free memory was 210.2MB in the beginning and 208.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 464.35ms. Allocated memory is still 274.7MB. Free memory was 208.8MB in the beginning and 190.3MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 1577.53ms. Allocated memory is still 274.7MB. Free memory was 189.7MB in the beginning and 206.0MB in the end (delta: -16.3MB). There was no memory consumed. 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 5 procedures, 260 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 21 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=379occurred in iteration=4, InterpolantAutomatonStates: 12, 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, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 637 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 21:19:40,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...