/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --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 --traceabstraction.abstraction.used.for.commutativity.in.por VARIABLES_GLOBAL -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.dynamic-abstractions-57af04c-m [2024-01-26 07:56:44,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-26 07:56:44,261 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf [2024-01-26 07:56:44,268 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-26 07:56:44,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-26 07:56:44,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-26 07:56:44,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-26 07:56:44,298 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-26 07:56:44,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-26 07:56:44,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-26 07:56:44,303 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-26 07:56:44,303 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-26 07:56:44,304 INFO L153 SettingsManager]: * Use SBE=true [2024-01-26 07:56:44,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-26 07:56:44,305 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-26 07:56:44,305 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-26 07:56:44,305 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-26 07:56:44,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-26 07:56:44,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-26 07:56:44,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-26 07:56:44,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-26 07:56:44,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-26 07:56:44,307 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-26 07:56:44,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-26 07:56:44,307 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-26 07:56:44,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-26 07:56:44,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-26 07:56:44,309 INFO L153 SettingsManager]: * To the following directory=./dump/ [2024-01-26 07:56:44,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-26 07:56:44,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-01-26 07:56:44,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-26 07:56:44,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-26 07:56:44,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-26 07:56:44,311 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-26 07:56:44,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-26 07:56:44,311 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-26 07:56:44,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-01-26 07:56:44,311 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-26 07:56:44,311 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2024-01-26 07:56:44,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Prune known deadend states from previous iterations -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstraction used for commutativity in POR -> VARIABLES_GLOBAL [2024-01-26 07:56:44,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-26 07:56:44,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-26 07:56:44,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-26 07:56:44,591 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-26 07:56:44,591 INFO L274 PluginConnector]: CDTParser initialized [2024-01-26 07:56:44,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2024-01-26 07:56:45,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-26 07:56:46,234 INFO L384 CDTParser]: Found 1 translation units. [2024-01-26 07:56:46,235 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2024-01-26 07:56:46,259 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/123b07b2b/82b633bb1d704402a47c3762b634d644/FLAG1f8c0265c [2024-01-26 07:56:46,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/123b07b2b/82b633bb1d704402a47c3762b634d644 [2024-01-26 07:56:46,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-26 07:56:46,281 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-26 07:56:46,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-26 07:56:46,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-26 07:56:46,288 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-26 07:56:46,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 07:56:46" (1/1) ... [2024-01-26 07:56:46,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a415e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46, skipping insertion in model container [2024-01-26 07:56:46,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 07:56:46" (1/1) ... [2024-01-26 07:56:46,342 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-26 07:56:46,761 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_81-list_racing.i[47038,47051] [2024-01-26 07:56:46,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-26 07:56:46,827 INFO L202 MainTranslator]: Completed pre-run [2024-01-26 07:56:46,874 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_81-list_racing.i[47038,47051] [2024-01-26 07:56:46,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-26 07:56:46,936 INFO L206 MainTranslator]: Completed translation [2024-01-26 07:56:46,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46 WrapperNode [2024-01-26 07:56:46,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-26 07:56:46,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-26 07:56:46,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-26 07:56:46,939 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-26 07:56:46,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46" (1/1) ... [2024-01-26 07:56:46,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46" (1/1) ... [2024-01-26 07:56:46,994 INFO L138 Inliner]: procedures = 279, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 217 [2024-01-26 07:56:46,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-26 07:56:46,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-26 07:56:46,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-26 07:56:46,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-26 07:56:47,004 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46" (1/1) ... [2024-01-26 07:56:47,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46" (1/1) ... [2024-01-26 07:56:47,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46" (1/1) ... [2024-01-26 07:56:47,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46" (1/1) ... [2024-01-26 07:56:47,025 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46" (1/1) ... [2024-01-26 07:56:47,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46" (1/1) ... [2024-01-26 07:56:47,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46" (1/1) ... [2024-01-26 07:56:47,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46" (1/1) ... [2024-01-26 07:56:47,040 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-26 07:56:47,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-26 07:56:47,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-26 07:56:47,041 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-26 07:56:47,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46" (1/1) ... [2024-01-26 07:56:47,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-01-26 07:56:47,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 07:56:47,087 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) [2024-01-26 07:56:47,114 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 [2024-01-26 07:56:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-26 07:56:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-01-26 07:56:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-01-26 07:56:47,124 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-01-26 07:56:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-26 07:56:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-26 07:56:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-01-26 07:56:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-01-26 07:56:47,124 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-01-26 07:56:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-01-26 07:56:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-26 07:56:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-26 07:56:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-26 07:56:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-01-26 07:56:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-01-26 07:56:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-26 07:56:47,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-26 07:56:47,127 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-26 07:56:47,255 INFO L241 CfgBuilder]: Building ICFG [2024-01-26 07:56:47,257 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-26 07:56:47,559 INFO L282 CfgBuilder]: Performing block encoding [2024-01-26 07:56:47,597 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-26 07:56:47,598 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2024-01-26 07:56:47,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 07:56:47 BoogieIcfgContainer [2024-01-26 07:56:47,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-26 07:56:47,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-26 07:56:47,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-26 07:56:47,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-26 07:56:47,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 07:56:46" (1/3) ... [2024-01-26 07:56:47,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7358998b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 07:56:47, skipping insertion in model container [2024-01-26 07:56:47,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 07:56:46" (2/3) ... [2024-01-26 07:56:47,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7358998b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 07:56:47, skipping insertion in model container [2024-01-26 07:56:47,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 07:56:47" (3/3) ... [2024-01-26 07:56:47,605 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2024-01-26 07:56:47,614 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-26 07:56:47,622 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-26 07:56:47,622 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-26 07:56:47,622 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-26 07:56:47,737 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-26 07:56:47,791 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:47,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-01-26 07:56:47,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 07:56:47,794 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) [2024-01-26 07:56:47,798 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 [2024-01-26 07:56:47,860 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-01-26 07:56:47,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-01-26 07:56:47,880 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;@6fcdeac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:47,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-01-26 07:56:47,884 WARN L125 DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly. [2024-01-26 07:56:47,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-01-26 07:56:47,890 INFO L445 BasicCegarLoop]: Path program histogram: [] [2024-01-26 07:56:47,892 INFO L308 ceAbstractionStarter]: Result for error location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/4) [2024-01-26 07:56:47,903 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:47,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-01-26 07:56:47,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 07:56:47,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-01-26 07:56:47,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2024-01-26 07:56:47,915 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-01-26 07:56:47,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2024-01-26 07:56:47,916 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;@6fcdeac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:47,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-01-26 07:56:48,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-26 07:56:48,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 07:56:48,182 INFO L85 PathProgramCache]: Analyzing trace with hash 901926220, now seen corresponding path program 1 times [2024-01-26 07:56:48,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 07:56:48,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921811138] [2024-01-26 07:56:48,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 07:56:48,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 07:56:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 07:56:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-26 07:56:48,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 07:56:48,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921811138] [2024-01-26 07:56:48,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921811138] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-26 07:56:48,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214679253] [2024-01-26 07:56:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 07:56:48,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-26 07:56:48,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 07:56:48,720 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) [2024-01-26 07:56:48,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-26 07:56:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 07:56:48,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-26 07:56:48,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-26 07:56:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-26 07:56:48,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-26 07:56:49,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-26 07:56:49,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214679253] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-26 07:56:49,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-26 07:56:49,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-01-26 07:56:49,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251639700] [2024-01-26 07:56:49,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-26 07:56:49,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-26 07:56:49,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 07:56:49,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-26 07:56:49,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-26 07:56:49,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 07:56:49,060 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-01-26 07:56:49,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 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) [2024-01-26 07:56:49,062 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-01-26 07:56:49,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-26 07:56:49,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-01-26 07:56:49,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-26 07:56:49,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-01-26 07:56:49,434 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-26 07:56:49,437 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/4) [2024-01-26 07:56:49,444 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:49,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-01-26 07:56:49,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 07:56:49,446 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) [2024-01-26 07:56:49,451 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 [2024-01-26 07:56:49,452 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-01-26 07:56:49,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2024-01-26 07:56:49,453 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;@6fcdeac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:49,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-01-26 07:56:49,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-26 07:56:49,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 07:56:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash -940917490, now seen corresponding path program 1 times [2024-01-26 07:56:49,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 07:56:49,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444819783] [2024-01-26 07:56:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 07:56:49,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 07:56:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 07:56:49,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-26 07:56:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 07:56:49,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-26 07:56:49,563 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-26 07:56:49,563 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-01-26 07:56:49,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-26 07:56:49,566 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-26 07:56:49,567 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/4) [2024-01-26 07:56:49,568 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-26 07:56:49,568 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-26 07:56:49,663 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-01-26 07:56:49,669 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:49,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-01-26 07:56:49,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 07:56:49,673 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-01-26 07:56:49,691 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-01-26 07:56:49,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-01-26 07:56:49,692 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;@6fcdeac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:49,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-01-26 07:56:49,693 WARN L125 DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly. [2024-01-26 07:56:49,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-01-26 07:56:49,694 INFO L445 BasicCegarLoop]: Path program histogram: [] [2024-01-26 07:56:49,694 INFO L308 ceAbstractionStarter]: Result for error location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/5) [2024-01-26 07:56:49,698 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:49,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-01-26 07:56:49,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 07:56:49,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2024-01-26 07:56:49,704 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-01-26 07:56:49,718 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-01-26 07:56:49,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2024-01-26 07:56:49,719 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;@6fcdeac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:49,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-01-26 07:56:49,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2024-01-26 07:56:50,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-26 07:56:50,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 07:56:50,107 INFO L85 PathProgramCache]: Analyzing trace with hash -847603775, now seen corresponding path program 1 times [2024-01-26 07:56:50,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 07:56:50,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208928804] [2024-01-26 07:56:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 07:56:50,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 07:56:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 07:56:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-01-26 07:56:50,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 07:56:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208928804] [2024-01-26 07:56:50,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208928804] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-26 07:56:50,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092897696] [2024-01-26 07:56:50,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 07:56:50,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-26 07:56:50,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 07:56:50,430 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-26 07:56:50,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-26 07:56:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 07:56:50,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-26 07:56:50,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-26 07:56:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-01-26 07:56:50,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-26 07:56:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-01-26 07:56:50,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092897696] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-26 07:56:50,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-26 07:56:50,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-01-26 07:56:50,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973472116] [2024-01-26 07:56:50,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-26 07:56:50,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-26 07:56:50,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 07:56:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-26 07:56:50,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-01-26 07:56:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 07:56:50,753 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-01-26 07:56:50,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 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) [2024-01-26 07:56:50,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-01-26 07:56:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-26 07:56:51,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-01-26 07:56:51,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-26 07:56:51,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-26 07:56:51,442 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-26 07:56:51,442 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/5) [2024-01-26 07:56:51,447 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:51,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-01-26 07:56:51,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 07:56:51,448 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-01-26 07:56:51,455 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-01-26 07:56:51,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2024-01-26 07:56:51,455 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;@6fcdeac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:51,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-01-26 07:56:51,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2024-01-26 07:56:51,487 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-26 07:56:51,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 07:56:51,488 INFO L85 PathProgramCache]: Analyzing trace with hash -617643648, now seen corresponding path program 1 times [2024-01-26 07:56:51,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 07:56:51,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428699443] [2024-01-26 07:56:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 07:56:51,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 07:56:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 07:56:51,525 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-26 07:56:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 07:56:51,569 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-26 07:56:51,570 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-26 07:56:51,570 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-01-26 07:56:51,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-26 07:56:51,571 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-26 07:56:51,572 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/5) [2024-01-26 07:56:51,572 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-26 07:56:51,572 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-26 07:56:51,660 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-01-26 07:56:51,666 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:51,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-01-26 07:56:51,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 07:56:51,671 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-01-26 07:56:51,679 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-01-26 07:56:51,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-01-26 07:56:51,680 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;@6fcdeac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:51,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-01-26 07:56:51,680 WARN L125 DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly. [2024-01-26 07:56:51,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-01-26 07:56:51,681 INFO L445 BasicCegarLoop]: Path program histogram: [] [2024-01-26 07:56:51,682 INFO L308 ceAbstractionStarter]: Result for error location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/6) [2024-01-26 07:56:51,687 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:51,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-01-26 07:56:51,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 07:56:51,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2024-01-26 07:56:51,695 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-01-26 07:56:51,705 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-01-26 07:56:51,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2024-01-26 07:56:51,706 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;@6fcdeac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:51,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-01-26 07:56:51,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2024-01-26 07:56:51,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-26 07:56:51,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 07:56:51,748 INFO L85 PathProgramCache]: Analyzing trace with hash 47778371, now seen corresponding path program 1 times [2024-01-26 07:56:51,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 07:56:51,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140767454] [2024-01-26 07:56:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 07:56:51,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 07:56:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 07:56:51,784 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-26 07:56:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 07:56:51,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-26 07:56:51,833 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-26 07:56:51,833 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-01-26 07:56:51,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-26 07:56:51,836 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-26 07:56:51,837 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/6) [2024-01-26 07:56:51,837 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-26 07:56:51,837 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-01-26 07:56:51,939 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2024-01-26 07:56:51,946 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:51,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-01-26 07:56:51,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 07:56:51,949 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) [2024-01-26 07:56:51,955 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 [2024-01-26 07:56:51,957 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-01-26 07:56:51,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-01-26 07:56:51,959 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;@6fcdeac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:51,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-01-26 07:56:51,959 WARN L125 DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly. [2024-01-26 07:56:51,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-01-26 07:56:51,960 INFO L445 BasicCegarLoop]: Path program histogram: [] [2024-01-26 07:56:51,960 INFO L308 ceAbstractionStarter]: Result for error location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/7) [2024-01-26 07:56:51,966 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:51,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-01-26 07:56:51,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 07:56:51,971 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-01-26 07:56:51,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2024-01-26 07:56:51,976 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-01-26 07:56:51,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2024-01-26 07:56:51,978 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;@6fcdeac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 07:56:51,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-01-26 08:00:21,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-26 08:00:21,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 08:00:21,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1001494871, now seen corresponding path program 1 times [2024-01-26 08:00:21,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 08:00:21,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289705465] [2024-01-26 08:00:21,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 08:00:21,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 08:00:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 08:00:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-01-26 08:00:21,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 08:00:21,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289705465] [2024-01-26 08:00:21,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289705465] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-26 08:00:21,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322766839] [2024-01-26 08:00:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 08:00:21,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-26 08:00:21,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 08:00:21,685 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) [2024-01-26 08:00:21,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-01-26 08:00:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 08:00:21,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-26 08:00:21,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-26 08:00:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-01-26 08:00:23,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-26 08:00:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-01-26 08:00:23,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322766839] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-26 08:00:23,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-26 08:00:23,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2024-01-26 08:00:23,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312859343] [2024-01-26 08:00:23,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-26 08:00:23,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-26 08:00:23,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 08:00:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-26 08:00:23,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2024-01-26 08:00:23,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 08:00:23,182 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-01-26 08:00:23,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.136363636363637) internal successors, (135), 22 states have internal predecessors, (135), 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) [2024-01-26 08:00:23,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.