/root/.sdkman/candidates/java/current/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --traceabstraction.prune.known.deadend.states.from.previous.iterations false -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.dynamic-abstractions-a4a1cd3-m [2024-05-30 18:44:08,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-30 18:44:08,922 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf [2024-05-30 18:44:08,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-30 18:44:08,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-30 18:44:08,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-30 18:44:08,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-30 18:44:08,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-30 18:44:08,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-30 18:44:08,960 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-30 18:44:08,960 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-30 18:44:08,960 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-30 18:44:08,960 INFO L153 SettingsManager]: * Use SBE=true [2024-05-30 18:44:08,962 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-30 18:44:08,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-30 18:44:08,962 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-30 18:44:08,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-30 18:44:08,962 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-30 18:44:08,962 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-30 18:44:08,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-30 18:44:08,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-30 18:44:08,963 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-30 18:44:08,964 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-30 18:44:08,964 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-30 18:44:08,964 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-30 18:44:08,964 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-30 18:44:08,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-30 18:44:08,965 INFO L153 SettingsManager]: * To the following directory=./dump/ [2024-05-30 18:44:08,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-30 18:44:08,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-05-30 18:44:08,966 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-30 18:44:08,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-30 18:44:08,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-30 18:44:08,966 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-30 18:44:08,967 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2024-05-30 18:44:08,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-30 18:44:08,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-30 18:44:08,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-05-30 18:44:08,967 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-30 18:44:08,967 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/UGemCutter-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Prune known deadend states from previous iterations -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION [2024-05-30 18:44:09,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-30 18:44:09,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-30 18:44:09,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-30 18:44:09,250 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-30 18:44:09,251 INFO L274 PluginConnector]: CDTParser initialized [2024-05-30 18:44:09,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-05-30 18:44:10,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-30 18:44:10,487 INFO L384 CDTParser]: Found 1 translation units. [2024-05-30 18:44:10,488 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-05-30 18:44:10,508 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/ccc7d30ec/82e59ea5a2a24e33850d1f91a760ceac/FLAGa5aea35ee [2024-05-30 18:44:10,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/ccc7d30ec/82e59ea5a2a24e33850d1f91a760ceac [2024-05-30 18:44:10,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-30 18:44:10,521 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-30 18:44:10,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-30 18:44:10,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-30 18:44:10,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-30 18:44:10,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.05 06:44:10" (1/1) ... [2024-05-30 18:44:10,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9baa6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:10, skipping insertion in model container [2024-05-30 18:44:10,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.05 06:44:10" (1/1) ... [2024-05-30 18:44:10,571 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-30 18:44:10,955 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2024-05-30 18:44:10,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-05-30 18:44:11,019 INFO L202 MainTranslator]: Completed pre-run [2024-05-30 18:44:11,057 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2024-05-30 18:44:11,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-05-30 18:44:11,153 INFO L206 MainTranslator]: Completed translation [2024-05-30 18:44:11,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:11 WrapperNode [2024-05-30 18:44:11,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-30 18:44:11,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-30 18:44:11,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-30 18:44:11,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-30 18:44:11,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:11" (1/1) ... [2024-05-30 18:44:11,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:11" (1/1) ... [2024-05-30 18:44:11,259 INFO L138 Inliner]: procedures = 272, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 285 [2024-05-30 18:44:11,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-30 18:44:11,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-30 18:44:11,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-30 18:44:11,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-30 18:44:11,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:11" (1/1) ... [2024-05-30 18:44:11,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:11" (1/1) ... [2024-05-30 18:44:11,285 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:11" (1/1) ... [2024-05-30 18:44:11,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:11" (1/1) ... [2024-05-30 18:44:11,291 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:11" (1/1) ... [2024-05-30 18:44:11,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:11" (1/1) ... [2024-05-30 18:44:11,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:11" (1/1) ... [2024-05-30 18:44:11,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:11" (1/1) ... [2024-05-30 18:44:11,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-30 18:44:11,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-30 18:44:11,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-30 18:44:11,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-30 18:44:11,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:11" (1/1) ... [2024-05-30 18:44:11,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-05-30 18:44:11,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:11,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-05-30 18:44:11,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-05-30 18:44:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-30 18:44:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-30 18:44:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-30 18:44:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-05-30 18:44:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-05-30 18:44:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-30 18:44:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-30 18:44:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-05-30 18:44:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-05-30 18:44:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-05-30 18:44:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-30 18:44:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-30 18:44:11,383 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-30 18:44:11,499 INFO L241 CfgBuilder]: Building ICFG [2024-05-30 18:44:11,501 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-30 18:44:11,751 INFO L282 CfgBuilder]: Performing block encoding [2024-05-30 18:44:11,795 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-30 18:44:11,795 INFO L309 CfgBuilder]: Removed 35 assume(true) statements. [2024-05-30 18:44:11,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.05 06:44:11 BoogieIcfgContainer [2024-05-30 18:44:11,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-30 18:44:11,797 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-30 18:44:11,797 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-30 18:44:11,800 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-30 18:44:11,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.05 06:44:10" (1/3) ... [2024-05-30 18:44:11,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6c61f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.05 06:44:11, skipping insertion in model container [2024-05-30 18:44:11,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.05 06:44:11" (2/3) ... [2024-05-30 18:44:11,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6c61f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.05 06:44:11, skipping insertion in model container [2024-05-30 18:44:11,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.05 06:44:11" (3/3) ... [2024-05-30 18:44:11,801 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2024-05-30 18:44:11,811 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-05-30 18:44:11,819 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-30 18:44:11,819 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-05-30 18:44:11,819 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-30 18:44:11,882 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-05-30 18:44:11,919 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:11,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-30 18:44:11,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:11,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-30 18:44:11,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-05-30 18:44:11,962 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-30 18:44:11,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-05-30 18:44:11,971 INFO L357 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=PARTIAL_ORDER_FA, 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;@7c607ecc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:11,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-30 18:44:12,596 INFO L78 Accepts]: Start accepts. Automaton has currently 5044 states, but on-demand construction may add more states Word has length 914 [2024-05-30 18:44:12,600 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:12,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:12,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:12,605 INFO L85 PathProgramCache]: Analyzing trace with hash 502487583, now seen corresponding path program 1 times [2024-05-30 18:44:12,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:12,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701117300] [2024-05-30 18:44:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:12,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3287 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3287 trivial. 0 not checked. [2024-05-30 18:44:13,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:13,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701117300] [2024-05-30 18:44:13,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701117300] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-30 18:44:13,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-30 18:44:13,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-30 18:44:13,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594903881] [2024-05-30 18:44:13,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-30 18:44:13,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-30 18:44:13,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:13,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-30 18:44:13,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-30 18:44:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:13,575 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:13,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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) [2024-05-30 18:44:13,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:13,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:13,854 INFO L78 Accepts]: Start accepts. Automaton has currently 4866 states, but on-demand construction may add more states Word has length 657 [2024-05-30 18:44:13,856 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:13,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-30 18:44:13,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:13,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:13,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1921536079, now seen corresponding path program 1 times [2024-05-30 18:44:13,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:13,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941212574] [2024-05-30 18:44:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:13,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2510 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2024-05-30 18:44:14,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:14,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941212574] [2024-05-30 18:44:14,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941212574] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:14,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965291214] [2024-05-30 18:44:14,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:14,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:14,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:14,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:14,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-30 18:44:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:14,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 1555 conjuncts, 4 conjunts are in the unsatisfiable core [2024-05-30 18:44:14,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:14,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2510 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2024-05-30 18:44:14,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2510 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2024-05-30 18:44:14,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965291214] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:14,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:14,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-05-30 18:44:14,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091268466] [2024-05-30 18:44:14,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:14,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-30 18:44:14,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:14,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-30 18:44:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-05-30 18:44:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:14,882 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:14,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 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) [2024-05-30 18:44:14,883 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:14,883 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:15,116 INFO L78 Accepts]: Start accepts. Automaton has currently 4873 states, but on-demand construction may add more states Word has length 667 [2024-05-30 18:44:15,119 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:15,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-05-30 18:44:15,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-05-30 18:44:15,326 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:15,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash -991912399, now seen corresponding path program 2 times [2024-05-30 18:44:15,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:15,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905785326] [2024-05-30 18:44:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:15,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2527 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2526 trivial. 0 not checked. [2024-05-30 18:44:15,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:15,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905785326] [2024-05-30 18:44:15,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905785326] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:15,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125454268] [2024-05-30 18:44:15,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-30 18:44:15,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:15,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:15,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:15,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-05-30 18:44:16,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-30 18:44:16,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-30 18:44:16,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-30 18:44:16,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2527 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2024-05-30 18:44:16,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2527 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2024-05-30 18:44:16,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125454268] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:16,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:16,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-05-30 18:44:16,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655913211] [2024-05-30 18:44:16,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:16,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-05-30 18:44:16,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:16,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-05-30 18:44:16,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-05-30 18:44:16,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:16,267 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:16,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.31578947368421) internal successors, (215), 19 states have internal predecessors, (215), 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) [2024-05-30 18:44:16,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:16,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:16,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:16,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:16,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:16,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-05-30 18:44:16,592 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-05-30 18:44:16,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:16,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:16,808 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2024-05-30 18:44:16,810 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/5) [2024-05-30 18:44:16,814 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:16,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-30 18:44:16,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:16,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-30 18:44:16,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2024-05-30 18:44:16,820 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-30 18:44:16,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-05-30 18:44:16,821 INFO L357 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=PARTIAL_ORDER_FA, 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;@7c607ecc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:16,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-30 18:44:16,998 INFO L78 Accepts]: Start accepts. Automaton has currently 2296 states, but on-demand construction may add more states Word has length 527 [2024-05-30 18:44:16,999 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:17,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:17,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:17,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2067118502, now seen corresponding path program 1 times [2024-05-30 18:44:17,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:17,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424377668] [2024-05-30 18:44:17,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:17,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1798 trivial. 0 not checked. [2024-05-30 18:44:17,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:17,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424377668] [2024-05-30 18:44:17,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424377668] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-30 18:44:17,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-30 18:44:17,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-30 18:44:17,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6902408] [2024-05-30 18:44:17,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-30 18:44:17,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-30 18:44:17,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:17,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-30 18:44:17,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-30 18:44:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:17,168 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:17,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-05-30 18:44:17,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:17,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:17,268 INFO L78 Accepts]: Start accepts. Automaton has currently 2194 states, but on-demand construction may add more states Word has length 505 [2024-05-30 18:44:17,269 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:17,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-30 18:44:17,270 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:17,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:17,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2123109782, now seen corresponding path program 1 times [2024-05-30 18:44:17,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:17,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466749671] [2024-05-30 18:44:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:17,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1562 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2024-05-30 18:44:17,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:17,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466749671] [2024-05-30 18:44:17,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466749671] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:17,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011683788] [2024-05-30 18:44:17,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:17,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:17,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:17,496 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:17,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-05-30 18:44:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:17,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 4 conjunts are in the unsatisfiable core [2024-05-30 18:44:17,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1562 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2024-05-30 18:44:17,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1562 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2024-05-30 18:44:17,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011683788] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:17,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:17,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-05-30 18:44:17,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466034400] [2024-05-30 18:44:17,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:17,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-30 18:44:17,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:17,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-30 18:44:17,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-05-30 18:44:17,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:17,871 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:17,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 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) [2024-05-30 18:44:17,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:17,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:17,974 INFO L78 Accepts]: Start accepts. Automaton has currently 2201 states, but on-demand construction may add more states Word has length 515 [2024-05-30 18:44:17,976 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:17,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:18,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:18,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:18,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:18,189 INFO L85 PathProgramCache]: Analyzing trace with hash -165641194, now seen corresponding path program 2 times [2024-05-30 18:44:18,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:18,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200120460] [2024-05-30 18:44:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:18,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1578 trivial. 0 not checked. [2024-05-30 18:44:18,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:18,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200120460] [2024-05-30 18:44:18,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200120460] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:18,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494687841] [2024-05-30 18:44:18,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-30 18:44:18,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:18,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:18,397 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:18,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-05-30 18:44:18,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-30 18:44:18,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-30 18:44:18,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-30 18:44:18,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2024-05-30 18:44:18,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2024-05-30 18:44:18,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494687841] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:18,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:18,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-05-30 18:44:18,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728009201] [2024-05-30 18:44:18,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:18,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-05-30 18:44:18,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:18,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-05-30 18:44:18,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-05-30 18:44:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:18,874 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:18,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 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) [2024-05-30 18:44:18,874 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:18,874 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:18,874 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:19,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-05-30 18:44:19,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-05-30 18:44:19,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:19,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:19,332 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2024-05-30 18:44:19,333 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (2/5) [2024-05-30 18:44:19,335 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:19,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-30 18:44:19,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:19,336 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-30 18:44:19,340 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-30 18:44:19,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2024-05-30 18:44:19,340 INFO L357 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=PARTIAL_ORDER_FA, 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;@7c607ecc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:19,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-30 18:44:19,342 INFO L78 Accepts]: Start accepts. Automaton has currently 51 states, but on-demand construction may add more states Word has length 37 [2024-05-30 18:44:19,342 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:19,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-30 18:44:19,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:19,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1616764248, now seen corresponding path program 1 times [2024-05-30 18:44:19,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:19,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106962757] [2024-05-30 18:44:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:19,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:19,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2024-05-30 18:44:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-05-30 18:44:19,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:19,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106962757] [2024-05-30 18:44:19,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106962757] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-30 18:44:19,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-30 18:44:19,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-30 18:44:19,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956146847] [2024-05-30 18:44:19,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-30 18:44:19,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-30 18:44:19,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:19,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-30 18:44:19,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-30 18:44:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:19,361 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:19,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-05-30 18:44:19,361 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:19,370 INFO L78 Accepts]: Start accepts. Automaton has currently 54 states, but on-demand construction may add more states Word has length 42 [2024-05-30 18:44:19,371 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:19,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-30 18:44:19,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-30 18:44:19,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:19,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1250675084, now seen corresponding path program 1 times [2024-05-30 18:44:19,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:19,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312947283] [2024-05-30 18:44:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:19,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-05-30 18:44:19,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312947283] [2024-05-30 18:44:19,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312947283] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776861152] [2024-05-30 18:44:19,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:19,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:19,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:19,404 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:19,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-05-30 18:44:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:19,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2024-05-30 18:44:19,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-05-30 18:44:19,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-05-30 18:44:19,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776861152] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:19,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:19,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-05-30 18:44:19,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301802289] [2024-05-30 18:44:19,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:19,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-30 18:44:19,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:19,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-30 18:44:19,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-05-30 18:44:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:19,595 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:19,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 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) [2024-05-30 18:44:19,595 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:19,595 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:19,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:19,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:19,631 INFO L78 Accepts]: Start accepts. Automaton has currently 61 states, but on-demand construction may add more states Word has length 52 [2024-05-30 18:44:19,631 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:19,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:19,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:19,837 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-30 18:44:19,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:19,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1777587444, now seen corresponding path program 2 times [2024-05-30 18:44:19,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:19,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989400077] [2024-05-30 18:44:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:19,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:19,909 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-05-30 18:44:19,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:19,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989400077] [2024-05-30 18:44:19,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989400077] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:19,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715570191] [2024-05-30 18:44:19,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-30 18:44:19,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:19,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:19,911 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:19,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-05-30 18:44:20,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-30 18:44:20,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-30 18:44:20,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-30 18:44:20,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-05-30 18:44:20,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-05-30 18:44:20,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715570191] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:20,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:20,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-05-30 18:44:20,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566844565] [2024-05-30 18:44:20,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:20,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-05-30 18:44:20,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:20,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-05-30 18:44:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-05-30 18:44:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:20,115 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:20,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 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) [2024-05-30 18:44:20,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:20,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:20,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-05-30 18:44:20,217 INFO L78 Accepts]: Start accepts. Automaton has currently 81 states, but on-demand construction may add more states Word has length 72 [2024-05-30 18:44:20,218 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:20,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:20,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:20,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-30 18:44:20,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:20,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1755401740, now seen corresponding path program 3 times [2024-05-30 18:44:20,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:20,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421682127] [2024-05-30 18:44:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:20,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-05-30 18:44:20,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:20,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421682127] [2024-05-30 18:44:20,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421682127] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:20,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507733738] [2024-05-30 18:44:20,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-30 18:44:20,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:20,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:20,584 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:20,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-05-30 18:44:20,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-05-30 18:44:20,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-30 18:44:20,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2024-05-30 18:44:20,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-05-30 18:44:20,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-05-30 18:44:20,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507733738] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:20,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:20,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-05-30 18:44:20,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257812886] [2024-05-30 18:44:20,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:20,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-05-30 18:44:20,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-05-30 18:44:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-05-30 18:44:20,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:20,919 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:20,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 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) [2024-05-30 18:44:20,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:20,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:20,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2024-05-30 18:44:20,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:21,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-05-30 18:44:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-05-30 18:44:21,091 INFO L78 Accepts]: Start accepts. Automaton has currently 96 states, but on-demand construction may add more states Word has length 87 [2024-05-30 18:44:21,091 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:21,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:21,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-05-30 18:44:21,299 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-30 18:44:21,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:21,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1819036456, now seen corresponding path program 4 times [2024-05-30 18:44:21,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:21,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069928675] [2024-05-30 18:44:21,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:21,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-30 18:44:21,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-30 18:44:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-30 18:44:21,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-30 18:44:21,360 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-30 18:44:21,361 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-05-30 18:44:21,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-30 18:44:21,362 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2024-05-30 18:44:21,362 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/5) [2024-05-30 18:44:21,363 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-05-30 18:44:21,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-05-30 18:44:21,389 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-05-30 18:44:21,392 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:21,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-30 18:44:21,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:21,393 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-30 18:44:21,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2024-05-30 18:44:21,398 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-30 18:44:21,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-05-30 18:44:21,398 INFO L357 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=PARTIAL_ORDER_FA, 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;@7c607ecc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:21,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-30 18:44:24,205 INFO L78 Accepts]: Start accepts. Automaton has currently 66944 states, but on-demand construction may add more states Word has length 1170 [2024-05-30 18:44:24,208 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:24,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:24,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:24,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1799499582, now seen corresponding path program 1 times [2024-05-30 18:44:24,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:24,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957297416] [2024-05-30 18:44:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:24,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4739 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4739 trivial. 0 not checked. [2024-05-30 18:44:24,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957297416] [2024-05-30 18:44:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957297416] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-30 18:44:24,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-30 18:44:24,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-30 18:44:24,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431362939] [2024-05-30 18:44:24,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-30 18:44:24,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-30 18:44:24,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:24,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-30 18:44:24,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-30 18:44:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:24,635 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:24,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2024-05-30 18:44:24,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:27,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:27,073 INFO L78 Accepts]: Start accepts. Automaton has currently 72113 states, but on-demand construction may add more states Word has length 973 [2024-05-30 18:44:27,077 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:27,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-30 18:44:27,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:27,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:27,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1749381281, now seen corresponding path program 1 times [2024-05-30 18:44:27,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:27,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127030978] [2024-05-30 18:44:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:27,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5909 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5908 trivial. 0 not checked. [2024-05-30 18:44:27,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:27,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127030978] [2024-05-30 18:44:27,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127030978] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:27,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91490435] [2024-05-30 18:44:27,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:27,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:27,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:27,637 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:27,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-05-30 18:44:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:28,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 2316 conjuncts, 3 conjunts are in the unsatisfiable core [2024-05-30 18:44:28,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:28,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-05-30 18:44:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5909 backedges. 2890 proven. 0 refuted. 0 times theorem prover too weak. 3019 trivial. 0 not checked. [2024-05-30 18:44:28,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-30 18:44:28,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91490435] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-30 18:44:28,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-30 18:44:28,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-05-30 18:44:28,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104088827] [2024-05-30 18:44:28,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-30 18:44:28,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-30 18:44:28,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:28,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-30 18:44:28,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-05-30 18:44:28,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:28,320 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:28,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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) [2024-05-30 18:44:28,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:28,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:30,484 INFO L78 Accepts]: Start accepts. Automaton has currently 83940 states, but on-demand construction may add more states Word has length 861 [2024-05-30 18:44:30,487 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:30,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:30,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-05-30 18:44:30,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:30,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:30,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1453985045, now seen corresponding path program 2 times [2024-05-30 18:44:30,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:30,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243304238] [2024-05-30 18:44:30,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:30,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:31,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3846 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3845 trivial. 0 not checked. [2024-05-30 18:44:31,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:31,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243304238] [2024-05-30 18:44:31,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243304238] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:31,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729513417] [2024-05-30 18:44:31,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-30 18:44:31,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:31,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:31,140 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:31,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-05-30 18:44:31,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-30 18:44:31,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-30 18:44:31,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 2042 conjuncts, 4 conjunts are in the unsatisfiable core [2024-05-30 18:44:31,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3846 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3845 trivial. 0 not checked. [2024-05-30 18:44:31,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3846 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3845 trivial. 0 not checked. [2024-05-30 18:44:31,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729513417] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:31,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:31,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-05-30 18:44:31,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271615397] [2024-05-30 18:44:31,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:31,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-30 18:44:31,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:31,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-30 18:44:31,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-05-30 18:44:31,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:31,766 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:31,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.4) internal successors, (224), 10 states have internal predecessors, (224), 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) [2024-05-30 18:44:31,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:31,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:31,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:34,025 INFO L78 Accepts]: Start accepts. Automaton has currently 83947 states, but on-demand construction may add more states Word has length 871 [2024-05-30 18:44:34,029 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:34,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:34,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-05-30 18:44:34,237 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:34,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1403208853, now seen corresponding path program 3 times [2024-05-30 18:44:34,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:34,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502049914] [2024-05-30 18:44:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:34,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3863 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3845 trivial. 0 not checked. [2024-05-30 18:44:34,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:34,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502049914] [2024-05-30 18:44:34,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502049914] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:34,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148081948] [2024-05-30 18:44:34,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-30 18:44:34,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:34,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:34,998 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:35,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-05-30 18:44:35,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-05-30 18:44:35,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-30 18:44:35,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2024-05-30 18:44:35,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3863 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3853 trivial. 0 not checked. [2024-05-30 18:44:35,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:35,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3863 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3853 trivial. 0 not checked. [2024-05-30 18:44:35,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148081948] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:35,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:35,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2024-05-30 18:44:35,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148186611] [2024-05-30 18:44:35,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:35,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-05-30 18:44:35,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:35,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-05-30 18:44:35,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-05-30 18:44:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:35,561 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:35,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.105263157894736) internal successors, (268), 19 states have internal predecessors, (268), 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) [2024-05-30 18:44:35,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:35,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:35,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:35,561 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-05-30 18:44:37,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-05-30 18:44:37,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:37,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-05-30 18:44:37,624 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2024-05-30 18:44:37,624 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/6) [2024-05-30 18:44:37,627 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:37,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-30 18:44:37,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:37,628 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-30 18:44:37,633 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-30 18:44:37,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-05-30 18:44:37,633 INFO L357 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=PARTIAL_ORDER_FA, 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;@7c607ecc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:37,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-30 18:44:37,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (16)] Waiting until timeout for monitored process [2024-05-30 18:44:39,949 INFO L78 Accepts]: Start accepts. Automaton has currently 64150 states, but on-demand construction may add more states Word has length 571 [2024-05-30 18:44:39,951 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:39,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:39,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:39,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1522602269, now seen corresponding path program 1 times [2024-05-30 18:44:39,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:39,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136453650] [2024-05-30 18:44:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:39,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:40,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2024-05-30 18:44:40,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:40,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136453650] [2024-05-30 18:44:40,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136453650] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-30 18:44:40,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-30 18:44:40,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-30 18:44:40,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858498192] [2024-05-30 18:44:40,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-30 18:44:40,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-30 18:44:40,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:40,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-30 18:44:40,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-30 18:44:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:40,076 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:40,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2024-05-30 18:44:40,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:41,787 INFO L78 Accepts]: Start accepts. Automaton has currently 69364 states, but on-demand construction may add more states Word has length 789 [2024-05-30 18:44:41,790 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:41,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-30 18:44:41,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:41,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1690775660, now seen corresponding path program 1 times [2024-05-30 18:44:41,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:41,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904510556] [2024-05-30 18:44:41,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:41,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3851 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3850 trivial. 0 not checked. [2024-05-30 18:44:42,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:42,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904510556] [2024-05-30 18:44:42,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904510556] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:42,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196644644] [2024-05-30 18:44:42,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:42,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:42,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:42,191 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:42,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-05-30 18:44:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:42,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 3 conjunts are in the unsatisfiable core [2024-05-30 18:44:42,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:42,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-05-30 18:44:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3851 backedges. 1379 proven. 0 refuted. 0 times theorem prover too weak. 2472 trivial. 0 not checked. [2024-05-30 18:44:42,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-30 18:44:42,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196644644] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-30 18:44:42,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-30 18:44:42,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-05-30 18:44:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291963011] [2024-05-30 18:44:42,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-30 18:44:42,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-30 18:44:42,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:42,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-30 18:44:42,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-05-30 18:44:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:42,758 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:42,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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) [2024-05-30 18:44:42,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:42,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:44,638 INFO L78 Accepts]: Start accepts. Automaton has currently 79659 states, but on-demand construction may add more states Word has length 498 [2024-05-30 18:44:44,640 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:44,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:44,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-05-30 18:44:44,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:44,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:44,849 INFO L85 PathProgramCache]: Analyzing trace with hash 375451587, now seen corresponding path program 2 times [2024-05-30 18:44:44,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:44,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807814345] [2024-05-30 18:44:44,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:44,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:44,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2024-05-30 18:44:44,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:44,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807814345] [2024-05-30 18:44:45,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807814345] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:45,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856065137] [2024-05-30 18:44:45,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-30 18:44:45,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:45,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:45,014 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:45,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-05-30 18:44:45,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-30 18:44:45,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-30 18:44:45,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 1197 conjuncts, 4 conjunts are in the unsatisfiable core [2024-05-30 18:44:45,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2024-05-30 18:44:45,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2024-05-30 18:44:45,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856065137] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:45,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:45,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-05-30 18:44:45,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380608083] [2024-05-30 18:44:45,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:45,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-30 18:44:45,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:45,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-30 18:44:45,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-05-30 18:44:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:45,497 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:45,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.2) internal successors, (202), 10 states have internal predecessors, (202), 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) [2024-05-30 18:44:45,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:45,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:45,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:47,450 INFO L78 Accepts]: Start accepts. Automaton has currently 79666 states, but on-demand construction may add more states Word has length 508 [2024-05-30 18:44:47,452 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:47,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:47,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-05-30 18:44:47,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-30 18:44:47,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:47,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1024813123, now seen corresponding path program 3 times [2024-05-30 18:44:47,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:47,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179410078] [2024-05-30 18:44:47,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:47,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2024-05-30 18:44:47,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:47,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179410078] [2024-05-30 18:44:47,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179410078] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:47,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862673308] [2024-05-30 18:44:47,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-30 18:44:47,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:47,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:47,925 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:47,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-05-30 18:44:48,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-05-30 18:44:48,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-30 18:44:48,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 6 conjunts are in the unsatisfiable core [2024-05-30 18:44:48,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2024-05-30 18:44:48,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2024-05-30 18:44:48,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862673308] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:48,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:48,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2024-05-30 18:44:48,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941537579] [2024-05-30 18:44:48,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:48,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-05-30 18:44:48,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:48,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-05-30 18:44:48,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-05-30 18:44:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:48,484 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:48,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.947368421052632) internal successors, (246), 19 states have internal predecessors, (246), 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) [2024-05-30 18:44:48,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:48,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:48,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:48,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:50,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:50,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:50,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-05-30 18:44:50,183 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-05-30 18:44:50,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:50,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:50,384 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2024-05-30 18:44:50,384 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (2/6) [2024-05-30 18:44:50,387 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:50,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-30 18:44:50,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:50,388 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-30 18:44:50,394 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-30 18:44:50,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2024-05-30 18:44:50,395 INFO L357 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=PARTIAL_ORDER_FA, 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;@7c607ecc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:50,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-30 18:44:50,396 INFO L78 Accepts]: Start accepts. Automaton has currently 76 states, but on-demand construction may add more states Word has length 45 [2024-05-30 18:44:50,396 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:50,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-30 18:44:50,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:50,396 INFO L85 PathProgramCache]: Analyzing trace with hash 531138158, now seen corresponding path program 1 times [2024-05-30 18:44:50,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:50,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819233791] [2024-05-30 18:44:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:50,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:50,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (20)] Waiting until timeout for monitored process [2024-05-30 18:44:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-05-30 18:44:50,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:50,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819233791] [2024-05-30 18:44:50,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819233791] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-30 18:44:50,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-30 18:44:50,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-30 18:44:50,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504468686] [2024-05-30 18:44:50,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-30 18:44:50,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-30 18:44:50,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:50,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-30 18:44:50,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-30 18:44:50,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:50,423 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:50,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-05-30 18:44:50,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:50,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:50,432 INFO L78 Accepts]: Start accepts. Automaton has currently 78 states, but on-demand construction may add more states Word has length 50 [2024-05-30 18:44:50,432 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:50,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-30 18:44:50,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-30 18:44:50,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:50,433 INFO L85 PathProgramCache]: Analyzing trace with hash 410021114, now seen corresponding path program 1 times [2024-05-30 18:44:50,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:50,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346790246] [2024-05-30 18:44:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:50,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-05-30 18:44:50,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:50,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346790246] [2024-05-30 18:44:50,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346790246] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:50,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467000792] [2024-05-30 18:44:50,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:50,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:50,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:50,473 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:50,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-05-30 18:44:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:50,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2024-05-30 18:44:50,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-05-30 18:44:50,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-05-30 18:44:50,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467000792] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:50,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:50,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-05-30 18:44:50,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496385860] [2024-05-30 18:44:50,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:50,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-30 18:44:50,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:50,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-30 18:44:50,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-05-30 18:44:50,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:50,847 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:50,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 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) [2024-05-30 18:44:50,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:50,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:50,893 INFO L78 Accepts]: Start accepts. Automaton has currently 85 states, but on-demand construction may add more states Word has length 60 [2024-05-30 18:44:50,893 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:50,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:51,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-05-30 18:44:51,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-30 18:44:51,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:51,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1086265990, now seen corresponding path program 2 times [2024-05-30 18:44:51,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:51,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418101097] [2024-05-30 18:44:51,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:51,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-05-30 18:44:51,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:51,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418101097] [2024-05-30 18:44:51,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418101097] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:51,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582563277] [2024-05-30 18:44:51,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-30 18:44:51,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:51,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:51,345 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:51,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-05-30 18:44:51,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-30 18:44:51,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-30 18:44:51,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-30 18:44:51,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-05-30 18:44:51,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-05-30 18:44:51,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582563277] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:51,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:51,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-05-30 18:44:51,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362771791] [2024-05-30 18:44:51,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:51,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-05-30 18:44:51,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:51,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-05-30 18:44:51,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-05-30 18:44:51,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:51,751 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:51,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 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) [2024-05-30 18:44:51,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:51,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:51,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:51,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-05-30 18:44:51,874 INFO L78 Accepts]: Start accepts. Automaton has currently 105 states, but on-demand construction may add more states Word has length 80 [2024-05-30 18:44:51,875 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:51,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:52,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:52,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-30 18:44:52,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash -426510726, now seen corresponding path program 3 times [2024-05-30 18:44:52,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:52,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823168707] [2024-05-30 18:44:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:52,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-30 18:44:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-05-30 18:44:52,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-30 18:44:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823168707] [2024-05-30 18:44:52,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823168707] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-30 18:44:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348395595] [2024-05-30 18:44:52,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-30 18:44:52,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-30 18:44:52,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:52,231 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-30 18:44:52,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-05-30 18:44:52,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-05-30 18:44:52,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-30 18:44:52,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 16 conjunts are in the unsatisfiable core [2024-05-30 18:44:52,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-30 18:44:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-05-30 18:44:52,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-30 18:44:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-05-30 18:44:52,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348395595] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-30 18:44:52,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-30 18:44:52,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-05-30 18:44:52,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097359781] [2024-05-30 18:44:52,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-30 18:44:52,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-05-30 18:44:52,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-30 18:44:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-05-30 18:44:52,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-05-30 18:44:52,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:52,777 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-30 18:44:52,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 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) [2024-05-30 18:44:52,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:52,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:52,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2024-05-30 18:44:52,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-30 18:44:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-30 18:44:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-30 18:44:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-05-30 18:44:52,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-05-30 18:44:52,980 INFO L78 Accepts]: Start accepts. Automaton has currently 120 states, but on-demand construction may add more states Word has length 95 [2024-05-30 18:44:52,980 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-30 18:44:52,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-05-30 18:44:53,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-05-30 18:44:53,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-30 18:44:53,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-30 18:44:53,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1222499310, now seen corresponding path program 4 times [2024-05-30 18:44:53,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-30 18:44:53,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842561228] [2024-05-30 18:44:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-30 18:44:53,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-30 18:44:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-30 18:44:53,198 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-30 18:44:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-30 18:44:53,220 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-30 18:44:53,220 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-30 18:44:53,221 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-05-30 18:44:53,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-30 18:44:53,221 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2024-05-30 18:44:53,222 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/6) [2024-05-30 18:44:53,222 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-05-30 18:44:53,222 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-05-30 18:44:53,248 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-05-30 18:44:53,251 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:53,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-30 18:44:53,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-30 18:44:53,252 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-30 18:44:53,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (24)] Waiting until timeout for monitored process [2024-05-30 18:44:53,258 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-30 18:44:53,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-05-30 18:44:53,258 INFO L357 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=PARTIAL_ORDER_FA, 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;@7c607ecc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-30 18:44:53,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.