/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -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/mix037.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:45:41,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:45:41,243 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 [2023-11-30 04:45:41,287 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:45:41,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:45:41,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:45:41,289 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:45:41,289 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:45:41,290 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:45:41,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:45:41,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:45:41,291 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:45:41,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:45:41,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:45:41,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:45:41,295 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:45:41,296 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:45:41,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:45:41,299 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:45:41,299 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:45:41,300 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:45:41,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:45:41,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:45:41,301 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:45:41,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:45:41,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:45:41,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:45:41,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:45:41,302 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:45:41,303 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:45:41,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:45:41,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:45:41,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:45:41,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:45:41,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:45:41,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:45:41,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:45:41,629 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:45:41,630 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:45:41,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix037.opt.i [2023-11-30 04:45:42,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:45:42,973 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:45:42,974 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix037.opt.i [2023-11-30 04:45:42,987 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d732971e/bb6f62710e4c4205ab6499e0a7bd518f/FLAG76310a6de [2023-11-30 04:45:42,998 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d732971e/bb6f62710e4c4205ab6499e0a7bd518f [2023-11-30 04:45:43,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:45:43,002 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:45:43,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:45:43,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:45:43,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:45:43,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:45:43" (1/1) ... [2023-11-30 04:45:43,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4060aedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43, skipping insertion in model container [2023-11-30 04:45:43,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:45:43" (1/1) ... [2023-11-30 04:45:43,060 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:45:43,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:45:43,445 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:45:43,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:45:43,541 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:45:43,541 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:45:43,547 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:45:43,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43 WrapperNode [2023-11-30 04:45:43,548 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:45:43,549 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:45:43,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:45:43,549 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:45:43,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43" (1/1) ... [2023-11-30 04:45:43,601 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43" (1/1) ... [2023-11-30 04:45:43,634 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 157 [2023-11-30 04:45:43,635 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:45:43,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:45:43,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:45:43,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:45:43,644 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43" (1/1) ... [2023-11-30 04:45:43,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43" (1/1) ... [2023-11-30 04:45:43,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43" (1/1) ... [2023-11-30 04:45:43,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43" (1/1) ... [2023-11-30 04:45:43,668 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43" (1/1) ... [2023-11-30 04:45:43,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43" (1/1) ... [2023-11-30 04:45:43,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43" (1/1) ... [2023-11-30 04:45:43,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43" (1/1) ... [2023-11-30 04:45:43,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:45:43,682 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:45:43,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:45:43,682 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:45:43,683 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43" (1/1) ... [2023-11-30 04:45:43,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:45:43,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:45:43,733 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) [2023-11-30 04:45:43,748 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 [2023-11-30 04:45:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:45:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 04:45:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:45:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:45:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:45:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-30 04:45:43,762 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-30 04:45:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-30 04:45:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-30 04:45:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-30 04:45:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-30 04:45:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-30 04:45:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-30 04:45:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:45:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 04:45:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:45:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:45:43,767 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 04:45:43,900 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:45:43,903 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:45:44,171 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:45:44,262 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:45:44,263 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 04:45:44,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:45:44 BoogieIcfgContainer [2023-11-30 04:45:44,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:45:44,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:45:44,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:45:44,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:45:44,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:45:43" (1/3) ... [2023-11-30 04:45:44,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a00c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:45:44, skipping insertion in model container [2023-11-30 04:45:44,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:45:43" (2/3) ... [2023-11-30 04:45:44,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a00c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:45:44, skipping insertion in model container [2023-11-30 04:45:44,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:45:44" (3/3) ... [2023-11-30 04:45:44,271 INFO L112 eAbstractionObserver]: Analyzing ICFG mix037.opt.i [2023-11-30 04:45:44,285 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:45:44,285 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-30 04:45:44,285 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:45:44,354 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:45:44,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 147 transitions, 310 flow [2023-11-30 04:45:44,446 INFO L124 PetriNetUnfolderBase]: 3/143 cut-off events. [2023-11-30 04:45:44,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:45:44,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 143 events. 3/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2023-11-30 04:45:44,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 147 transitions, 310 flow [2023-11-30 04:45:44,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 93 transitions, 195 flow [2023-11-30 04:45:44,464 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:45:44,469 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;@7ce1d409, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:45:44,470 INFO L363 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-30 04:45:44,479 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:45:44,479 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events. [2023-11-30 04:45:44,479 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:45:44,479 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:45:44,480 INFO L232 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] [2023-11-30 04:45:44,480 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)] === [2023-11-30 04:45:44,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:45:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash -867668384, now seen corresponding path program 1 times [2023-11-30 04:45:44,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:45:44,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992834392] [2023-11-30 04:45:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:45:44,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:45:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:45:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:45:44,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:45:44,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992834392] [2023-11-30 04:45:44,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992834392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:45:44,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:45:44,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:45:44,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100894735] [2023-11-30 04:45:44,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:45:44,848 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:45:44,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:45:44,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:45:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:45:44,882 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 147 [2023-11-30 04:45:44,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 93 transitions, 195 flow. Second operand has 3 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) [2023-11-30 04:45:44,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:45:44,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 147 [2023-11-30 04:45:44,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:45:44,983 INFO L124 PetriNetUnfolderBase]: 2/104 cut-off events. [2023-11-30 04:45:44,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:45:44,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 104 events. 2/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 2 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 77. Up to 19 conditions per place. [2023-11-30 04:45:44,986 INFO L140 encePairwiseOnDemand]: 145/147 looper letters, 18 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2023-11-30 04:45:44,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 92 transitions, 231 flow [2023-11-30 04:45:44,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:45:44,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:45:45,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-11-30 04:45:45,004 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8072562358276644 [2023-11-30 04:45:45,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-11-30 04:45:45,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-11-30 04:45:45,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:45:45,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-11-30 04:45:45,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:45:45,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:45,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:45,025 INFO L307 CegarLoopForPetriNet]: 103 programPoint places, 1 predicate places. [2023-11-30 04:45:45,025 INFO L500 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 231 flow [2023-11-30 04:45:45,026 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-30 04:45:45,026 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:45:45,027 INFO L232 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] [2023-11-30 04:45:45,027 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:45:45,027 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)] === [2023-11-30 04:45:45,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:45:45,028 INFO L85 PathProgramCache]: Analyzing trace with hash -867668383, now seen corresponding path program 1 times [2023-11-30 04:45:45,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:45:45,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057633412] [2023-11-30 04:45:45,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:45:45,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:45:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:45:45,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:45:45,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:45:45,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057633412] [2023-11-30 04:45:45,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057633412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:45:45,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:45:45,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:45:45,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416594212] [2023-11-30 04:45:45,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:45:45,235 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:45:45,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:45:45,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:45:45,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:45:45,238 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 147 [2023-11-30 04:45:45,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 231 flow. Second operand has 3 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) [2023-11-30 04:45:45,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:45:45,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 147 [2023-11-30 04:45:45,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:45:45,293 INFO L124 PetriNetUnfolderBase]: 3/109 cut-off events. [2023-11-30 04:45:45,293 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-30 04:45:45,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 109 events. 3/109 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 104 event pairs, 3 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 100. Up to 19 conditions per place. [2023-11-30 04:45:45,294 INFO L140 encePairwiseOnDemand]: 145/147 looper letters, 16 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-11-30 04:45:45,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 91 transitions, 261 flow [2023-11-30 04:45:45,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:45:45,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:45:45,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-11-30 04:45:45,297 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8299319727891157 [2023-11-30 04:45:45,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-11-30 04:45:45,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-11-30 04:45:45,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:45:45,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-11-30 04:45:45,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2023-11-30 04:45:45,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:45,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:45,301 INFO L307 CegarLoopForPetriNet]: 103 programPoint places, 2 predicate places. [2023-11-30 04:45:45,301 INFO L500 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 261 flow [2023-11-30 04:45:45,302 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-30 04:45:45,302 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:45:45,302 INFO L232 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] [2023-11-30 04:45:45,302 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:45:45,302 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-30 04:45:45,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:45:45,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1864873916, now seen corresponding path program 1 times [2023-11-30 04:45:45,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:45:45,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438874343] [2023-11-30 04:45:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:45:45,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:45:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:45:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:45:45,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:45:45,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438874343] [2023-11-30 04:45:45,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438874343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:45:45,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:45:45,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:45:45,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264397716] [2023-11-30 04:45:45,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:45:45,392 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:45:45,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:45:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:45:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:45:45,396 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 147 [2023-11-30 04:45:45,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-11-30 04:45:45,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:45:45,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 147 [2023-11-30 04:45:45,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:45:45,454 INFO L124 PetriNetUnfolderBase]: 3/108 cut-off events. [2023-11-30 04:45:45,454 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-30 04:45:45,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 108 events. 3/108 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 101 event pairs, 3 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 114. Up to 19 conditions per place. [2023-11-30 04:45:45,456 INFO L140 encePairwiseOnDemand]: 145/147 looper letters, 17 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-11-30 04:45:45,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 90 transitions, 293 flow [2023-11-30 04:45:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:45:45,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:45:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-11-30 04:45:45,459 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8049886621315193 [2023-11-30 04:45:45,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-11-30 04:45:45,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-11-30 04:45:45,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:45:45,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-11-30 04:45:45,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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) [2023-11-30 04:45:45,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:45,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:45,465 INFO L307 CegarLoopForPetriNet]: 103 programPoint places, 3 predicate places. [2023-11-30 04:45:45,465 INFO L500 AbstractCegarLoop]: Abstraction has has 106 places, 90 transitions, 293 flow [2023-11-30 04:45:45,465 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-11-30 04:45:45,466 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:45:45,466 INFO L232 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] [2023-11-30 04:45:45,466 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:45:45,466 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-30 04:45:45,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:45:45,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1864873917, now seen corresponding path program 1 times [2023-11-30 04:45:45,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:45:45,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362206045] [2023-11-30 04:45:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:45:45,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:45:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:45:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:45:45,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:45:45,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362206045] [2023-11-30 04:45:45,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362206045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:45:45,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:45:45,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:45:45,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902077854] [2023-11-30 04:45:45,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:45:45,606 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:45:45,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:45:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:45:45,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:45:45,612 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 147 [2023-11-30 04:45:45,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 90 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:45:45,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:45:45,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 147 [2023-11-30 04:45:45,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:45:45,661 INFO L124 PetriNetUnfolderBase]: 3/107 cut-off events. [2023-11-30 04:45:45,661 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-30 04:45:45,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 107 events. 3/107 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 96 event pairs, 3 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 126. Up to 18 conditions per place. [2023-11-30 04:45:45,662 INFO L140 encePairwiseOnDemand]: 145/147 looper letters, 15 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-11-30 04:45:45,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 89 transitions, 319 flow [2023-11-30 04:45:45,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:45:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:45:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-11-30 04:45:45,665 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8276643990929705 [2023-11-30 04:45:45,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-11-30 04:45:45,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-11-30 04:45:45,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:45:45,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-11-30 04:45:45,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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) [2023-11-30 04:45:45,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:45,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:45,671 INFO L307 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2023-11-30 04:45:45,671 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 89 transitions, 319 flow [2023-11-30 04:45:45,672 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:45:45,672 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:45:45,672 INFO L232 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] [2023-11-30 04:45:45,672 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:45:45,673 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)] === [2023-11-30 04:45:45,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:45:45,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1523431953, now seen corresponding path program 1 times [2023-11-30 04:45:45,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:45:45,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502922995] [2023-11-30 04:45:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:45:45,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:45:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:45:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:45:45,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:45:45,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502922995] [2023-11-30 04:45:45,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502922995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:45:45,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:45:45,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:45:45,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711190655] [2023-11-30 04:45:45,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:45:45,810 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:45:45,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:45:45,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:45:45,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:45:45,812 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 147 [2023-11-30 04:45:45,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 89 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2023-11-30 04:45:45,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:45:45,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 147 [2023-11-30 04:45:45,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:45:45,862 INFO L124 PetriNetUnfolderBase]: 3/106 cut-off events. [2023-11-30 04:45:45,862 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-30 04:45:45,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 106 events. 3/106 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs, 3 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 138. Up to 18 conditions per place. [2023-11-30 04:45:45,864 INFO L140 encePairwiseOnDemand]: 145/147 looper letters, 15 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-11-30 04:45:45,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 88 transitions, 345 flow [2023-11-30 04:45:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:45:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:45:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-11-30 04:45:45,866 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8276643990929705 [2023-11-30 04:45:45,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-11-30 04:45:45,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-11-30 04:45:45,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:45:45,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-11-30 04:45:45,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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) [2023-11-30 04:45:45,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:45,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:45,871 INFO L307 CegarLoopForPetriNet]: 103 programPoint places, 5 predicate places. [2023-11-30 04:45:45,872 INFO L500 AbstractCegarLoop]: Abstraction has has 108 places, 88 transitions, 345 flow [2023-11-30 04:45:45,872 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2023-11-30 04:45:45,872 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:45:45,872 INFO L232 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] [2023-11-30 04:45:45,873 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 04:45:45,876 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)] === [2023-11-30 04:45:45,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:45:45,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1523431952, now seen corresponding path program 1 times [2023-11-30 04:45:45,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:45:45,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608441754] [2023-11-30 04:45:45,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:45:45,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:45:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:45:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:45:45,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:45:45,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608441754] [2023-11-30 04:45:45,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608441754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:45:45,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:45:45,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:45:45,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378795062] [2023-11-30 04:45:45,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:45:45,965 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:45:45,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:45:45,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:45:45,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:45:45,966 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 147 [2023-11-30 04:45:45,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 88 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2023-11-30 04:45:45,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:45:45,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 147 [2023-11-30 04:45:45,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:45:46,016 INFO L124 PetriNetUnfolderBase]: 3/105 cut-off events. [2023-11-30 04:45:46,016 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2023-11-30 04:45:46,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 105 events. 3/105 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 3 based on Foata normal form. 1/106 useless extension candidates. Maximal degree in co-relation 148. Up to 17 conditions per place. [2023-11-30 04:45:46,017 INFO L140 encePairwiseOnDemand]: 145/147 looper letters, 15 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-11-30 04:45:46,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 87 transitions, 369 flow [2023-11-30 04:45:46,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:45:46,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:45:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2023-11-30 04:45:46,019 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.800453514739229 [2023-11-30 04:45:46,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2023-11-30 04:45:46,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2023-11-30 04:45:46,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:45:46,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2023-11-30 04:45:46,020 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) [2023-11-30 04:45:46,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:46,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:46,025 INFO L307 CegarLoopForPetriNet]: 103 programPoint places, 6 predicate places. [2023-11-30 04:45:46,025 INFO L500 AbstractCegarLoop]: Abstraction has has 109 places, 87 transitions, 369 flow [2023-11-30 04:45:46,026 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2023-11-30 04:45:46,026 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:45:46,026 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:45:46,026 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 04:45:46,027 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-30 04:45:46,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:45:46,027 INFO L85 PathProgramCache]: Analyzing trace with hash 666008927, now seen corresponding path program 1 times [2023-11-30 04:45:46,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:45:46,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220611775] [2023-11-30 04:45:46,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:45:46,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:45:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:45:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:45:46,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:45:46,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220611775] [2023-11-30 04:45:46,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220611775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:45:46,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:45:46,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:45:46,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931078766] [2023-11-30 04:45:46,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:45:46,143 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:45:46,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:45:46,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:45:46,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:45:46,145 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 147 [2023-11-30 04:45:46,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 87 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2023-11-30 04:45:46,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:45:46,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 147 [2023-11-30 04:45:46,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:45:46,185 INFO L124 PetriNetUnfolderBase]: 2/92 cut-off events. [2023-11-30 04:45:46,185 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2023-11-30 04:45:46,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 92 events. 2/92 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 2/94 useless extension candidates. Maximal degree in co-relation 136. Up to 16 conditions per place. [2023-11-30 04:45:46,187 INFO L140 encePairwiseOnDemand]: 145/147 looper letters, 15 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-11-30 04:45:46,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 87 transitions, 407 flow [2023-11-30 04:45:46,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:45:46,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:45:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-11-30 04:45:46,189 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8276643990929705 [2023-11-30 04:45:46,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-11-30 04:45:46,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-11-30 04:45:46,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:45:46,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-11-30 04:45:46,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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) [2023-11-30 04:45:46,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:46,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:46,192 INFO L307 CegarLoopForPetriNet]: 103 programPoint places, 7 predicate places. [2023-11-30 04:45:46,192 INFO L500 AbstractCegarLoop]: Abstraction has has 110 places, 87 transitions, 407 flow [2023-11-30 04:45:46,193 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2023-11-30 04:45:46,193 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:45:46,193 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:45:46,193 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 04:45:46,193 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-30 04:45:46,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:45:46,194 INFO L85 PathProgramCache]: Analyzing trace with hash 666008926, now seen corresponding path program 1 times [2023-11-30 04:45:46,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:45:46,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785971219] [2023-11-30 04:45:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:45:46,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:45:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:45:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:45:46,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:45:46,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785971219] [2023-11-30 04:45:46,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785971219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:45:46,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:45:46,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:45:46,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889540693] [2023-11-30 04:45:46,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:45:46,259 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:45:46,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:45:46,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:45:46,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:45:46,261 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 147 [2023-11-30 04:45:46,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 87 transitions, 407 flow. Second operand has 3 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) [2023-11-30 04:45:46,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:45:46,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 147 [2023-11-30 04:45:46,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:45:46,297 INFO L124 PetriNetUnfolderBase]: 1/89 cut-off events. [2023-11-30 04:45:46,297 INFO L125 PetriNetUnfolderBase]: For 300/300 co-relation queries the response was YES. [2023-11-30 04:45:46,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 89 events. 1/89 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 2/91 useless extension candidates. Maximal degree in co-relation 128. Up to 15 conditions per place. [2023-11-30 04:45:46,309 INFO L140 encePairwiseOnDemand]: 145/147 looper letters, 0 selfloop transitions, 0 changer transitions 86/86 dead transitions. [2023-11-30 04:45:46,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 86 transitions, 429 flow [2023-11-30 04:45:46,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:45:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:45:46,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2023-11-30 04:45:46,311 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.800453514739229 [2023-11-30 04:45:46,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2023-11-30 04:45:46,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2023-11-30 04:45:46,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:45:46,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2023-11-30 04:45:46,323 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) [2023-11-30 04:45:46,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:46,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2023-11-30 04:45:46,324 INFO L307 CegarLoopForPetriNet]: 103 programPoint places, 8 predicate places. [2023-11-30 04:45:46,324 INFO L500 AbstractCegarLoop]: Abstraction has has 111 places, 86 transitions, 429 flow [2023-11-30 04:45:46,325 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-30 04:45:46,331 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mix037.opt.i_BEv2_AllErrorsAtOnce [2023-11-30 04:45:46,368 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-30 04:45:46,368 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-30 04:45:46,369 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-30 04:45:46,369 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-30 04:45:46,369 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-30 04:45:46,369 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-30 04:45:46,369 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-30 04:45:46,369 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-30 04:45:46,370 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2023-11-30 04:45:46,370 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2023-11-30 04:45:46,370 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-30 04:45:46,370 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-30 04:45:46,370 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 04:45:46,371 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:45:46,378 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 04:45:46,378 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 04:45:46,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 04:45:46 BasicIcfg [2023-11-30 04:45:46,386 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 04:45:46,386 INFO L158 Benchmark]: Toolchain (without parser) took 3383.76ms. Allocated memory was 352.3MB in the beginning and 595.6MB in the end (delta: 243.3MB). Free memory was 291.3MB in the beginning and 257.7MB in the end (delta: 33.6MB). Peak memory consumption was 278.5MB. Max. memory is 16.0GB. [2023-11-30 04:45:46,386 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 352.3MB. Free memory is still 297.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:45:46,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 544.39ms. Allocated memory is still 352.3MB. Free memory was 291.3MB in the beginning and 267.9MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-11-30 04:45:46,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.10ms. Allocated memory is still 352.3MB. Free memory was 267.9MB in the beginning and 265.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:45:46,387 INFO L158 Benchmark]: Boogie Preprocessor took 39.90ms. Allocated memory is still 352.3MB. Free memory was 265.2MB in the beginning and 263.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:45:46,388 INFO L158 Benchmark]: RCFGBuilder took 582.57ms. Allocated memory was 352.3MB in the beginning and 595.6MB in the end (delta: 243.3MB). Free memory was 263.4MB in the beginning and 523.0MB in the end (delta: -259.6MB). Peak memory consumption was 10.0MB. Max. memory is 16.0GB. [2023-11-30 04:45:46,389 INFO L158 Benchmark]: TraceAbstraction took 2119.54ms. Allocated memory is still 595.6MB. Free memory was 523.0MB in the beginning and 257.7MB in the end (delta: 265.3MB). Peak memory consumption was 266.3MB. Max. memory is 16.0GB. [2023-11-30 04:45:46,393 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 352.3MB. Free memory is still 297.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 544.39ms. Allocated memory is still 352.3MB. Free memory was 291.3MB in the beginning and 267.9MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 86.10ms. Allocated memory is still 352.3MB. Free memory was 267.9MB in the beginning and 265.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.90ms. Allocated memory is still 352.3MB. Free memory was 265.2MB in the beginning and 263.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 582.57ms. Allocated memory was 352.3MB in the beginning and 595.6MB in the end (delta: 243.3MB). Free memory was 263.4MB in the beginning and 523.0MB in the end (delta: -259.6MB). Peak memory consumption was 10.0MB. Max. memory is 16.0GB. * TraceAbstraction took 2119.54ms. Allocated memory is still 595.6MB. Free memory was 523.0MB in the beginning and 257.7MB in the end (delta: 265.3MB). Peak memory consumption was 266.3MB. Max. memory is 16.0GB. * 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, 183 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: 2.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 140 IncrementalHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 60 mSDtfsCounter, 140 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=429occurred 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, 0.8s InterpolantComputationTime, 436 NumberOfCodeBlocks, 436 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 428 ConstructedInterpolants, 0 QuantifiedInterpolants, 572 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! [2023-11-30 04:45:46,412 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...