/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chl-nzb-file-trans.wvr.line895.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 14:12:00,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 14:12:00,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 14:12:00,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 14:12:00,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 14:12:00,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 14:12:00,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 14:12:00,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 14:12:00,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 14:12:00,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 14:12:00,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 14:12:00,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 14:12:00,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 14:12:00,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 14:12:00,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 14:12:00,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 14:12:00,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 14:12:00,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 14:12:00,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 14:12:00,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 14:12:00,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 14:12:00,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 14:12:00,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 14:12:00,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 14:12:00,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-03 14:12:00,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-03 14:12:00,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-03 14:12:00,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-03 14:12:00,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-03 14:12:00,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-03 14:12:00,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-03 14:12:00,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-03 14:12:00,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-03 14:12:00,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-03 14:12:00,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-03 14:12:00,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-03 14:12:00,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-03 14:12:00,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-03 14:12:00,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 14:12:00,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 14:12:00,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 14:12:00,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 14:12:00,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 14:12:00,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 14:12:00,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 14:12:00,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 14:12:00,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 14:12:00,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 14:12:00,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 14:12:00,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 14:12:00,260 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 14:12:00,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 14:12:00,261 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 14:12:00,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 14:12:00,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 14:12:00,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 14:12:00,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 14:12:00,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 14:12:00,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 14:12:00,261 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 14:12:00,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 14:12:00,262 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 14:12:00,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 14:12:00,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 14:12:00,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 14:12:00,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 14:12:00,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 14:12:00,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:12:00,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 14:12:00,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 14:12:00,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 14:12:00,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 14:12:00,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 14:12:00,263 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 14:12:00,264 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 14:12:00,264 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 14:12:00,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 14:12:00,264 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 14:12:00,264 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 14:12:00,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 14:12:00,264 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 14:12:00,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 14:12:00,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 14:12:00,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 14:12:00,521 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 14:12:00,526 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 14:12:00,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chl-nzb-file-trans.wvr.line895.bpl [2022-10-03 14:12:00,527 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chl-nzb-file-trans.wvr.line895.bpl' [2022-10-03 14:12:00,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 14:12:00,596 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 14:12:00,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 14:12:00,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 14:12:00,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 14:12:00,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "chl-nzb-file-trans.wvr.line895.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:12:00" (1/1) ... [2022-10-03 14:12:00,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "chl-nzb-file-trans.wvr.line895.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:12:00" (1/1) ... [2022-10-03 14:12:00,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "chl-nzb-file-trans.wvr.line895.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:12:00" (1/1) ... [2022-10-03 14:12:00,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "chl-nzb-file-trans.wvr.line895.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:12:00" (1/1) ... [2022-10-03 14:12:00,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "chl-nzb-file-trans.wvr.line895.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:12:00" (1/1) ... [2022-10-03 14:12:00,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "chl-nzb-file-trans.wvr.line895.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:12:00" (1/1) ... [2022-10-03 14:12:00,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "chl-nzb-file-trans.wvr.line895.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:12:00" (1/1) ... [2022-10-03 14:12:00,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 14:12:00,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 14:12:00,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 14:12:00,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 14:12:00,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "chl-nzb-file-trans.wvr.line895.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:12:00" (1/1) ... [2022-10-03 14:12:00,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:12:00,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:12:00,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-03 14:12:00,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-03 14:12:00,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-03 14:12:00,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-03 14:12:00,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-03 14:12:00,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-03 14:12:00,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-03 14:12:00,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-03 14:12:00,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 14:12:00,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 14:12:00,824 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-03 14:12:01,018 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 14:12:01,020 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 14:12:02,141 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 14:12:02,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 14:12:02,174 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-03 14:12:02,178 INFO L202 PluginConnector]: Adding new model chl-nzb-file-trans.wvr.line895.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:12:02 BoogieIcfgContainer [2022-10-03 14:12:02,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 14:12:02,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 14:12:02,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 14:12:02,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 14:12:02,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "chl-nzb-file-trans.wvr.line895.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:12:00" (1/2) ... [2022-10-03 14:12:02,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a41293 and model type chl-nzb-file-trans.wvr.line895.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:12:02, skipping insertion in model container [2022-10-03 14:12:02,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "chl-nzb-file-trans.wvr.line895.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:12:02" (2/2) ... [2022-10-03 14:12:02,207 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.line895.bpl [2022-10-03 14:12:02,215 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 14:12:02,226 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 14:12:02,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 14:12:02,226 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 14:12:02,478 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-10-03 14:12:02,555 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:12:02,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:12:02,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:12:02,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 14:12:02,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-10-03 14:12:02,609 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:12:02,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread3Err0ASSERT_VIOLATIONASSERT ======== [2022-10-03 14:12:02,631 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=LoopsAndPotentialCycles, 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;@2e4e3ed7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:12:02,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:12:02,634 WARN L124 DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly. [2022-10-03 14:12:02,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-03 14:12:02,647 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-03 14:12:02,652 INFO L307 ceAbstractionStarter]: Result for error location thread3Err0ASSERT_VIOLATIONASSERT was SAFE (1/5) [2022-10-03 14:12:02,669 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:12:02,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:12:02,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:12:02,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 14:12:02,685 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:12:02,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-03 14:12:02,687 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=LoopsAndPotentialCycles, 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;@2e4e3ed7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:12:02,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:12:02,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-10-03 14:12:02,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-03 14:12:02,820 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-03 14:12:02,824 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/5) [2022-10-03 14:12:02,841 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:12:02,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:12:02,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:12:02,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 14:12:02,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2022-10-03 14:12:02,882 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:12:02,882 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-03 14:12:02,883 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=LoopsAndPotentialCycles, 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;@2e4e3ed7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:12:02,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:12:39,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-03 14:12:39,011 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-03 14:12:39,012 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (3/5) [2022-10-03 14:12:39,022 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:12:39,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:12:39,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:12:39,029 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 14:12:39,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2022-10-03 14:12:39,039 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:12:39,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-03 14:12:39,040 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=LoopsAndPotentialCycles, 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;@2e4e3ed7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:12:39,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:12:39,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-03 14:12:39,295 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-03 14:12:39,295 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (4/5) [2022-10-03 14:12:39,305 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:12:39,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:12:39,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:12:39,311 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 14:12:39,321 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:12:39,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread3Err0ASSERT_VIOLATIONASSERT ======== [2022-10-03 14:12:39,322 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=LoopsAndPotentialCycles, 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;@2e4e3ed7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:12:39,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:12:39,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2022-10-03 14:12:39,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONASSERT === [thread3Err0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:12:39,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:12:39,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1041342999, now seen corresponding path program 1 times [2022-10-03 14:12:39,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:12:39,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598913636] [2022-10-03 14:12:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:12:39,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:12:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:12:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:12:40,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:12:40,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598913636] [2022-10-03 14:12:40,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598913636] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:12:40,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:12:40,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 14:12:40,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834330045] [2022-10-03 14:12:40,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:12:40,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 14:12:40,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:12:40,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 14:12:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 14:12:40,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:12:40,235 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:12:40,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 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) [2022-10-03 14:12:40,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:14:01,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:14:01,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 14:14:01,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONASSERT === [thread3Err0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:14:01,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:14:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1693783922, now seen corresponding path program 1 times [2022-10-03 14:14:01,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:14:01,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104663731] [2022-10-03 14:14:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:14:01,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:14:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:14:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:14:02,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:14:02,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104663731] [2022-10-03 14:14:02,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104663731] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:14:02,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:14:02,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-03 14:14:02,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808287939] [2022-10-03 14:14:02,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:14:02,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-03 14:14:02,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:14:02,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-03 14:14:02,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-03 14:14:02,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:14:02,122 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:14:02,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 72.6) internal successors, (363), 6 states have internal predecessors, (363), 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) [2022-10-03 14:14:02,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:14:02,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.