/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/ring_2w1r-2.line586.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-04 02:59:42,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-04 02:59:42,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-04 02:59:42,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-04 02:59:42,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-04 02:59:42,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-04 02:59:42,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-04 02:59:42,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-04 02:59:42,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-04 02:59:42,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-04 02:59:42,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-04 02:59:42,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-04 02:59:42,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-04 02:59:42,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-04 02:59:42,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-04 02:59:42,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-04 02:59:42,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-04 02:59:42,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-04 02:59:42,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-04 02:59:42,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-04 02:59:42,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-04 02:59:42,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-04 02:59:42,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-04 02:59:42,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-04 02:59:42,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-04 02:59:42,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-04 02:59:42,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-04 02:59:42,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-04 02:59:42,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-04 02:59:42,349 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-04 02:59:42,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-04 02:59:42,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-04 02:59:42,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-04 02:59:42,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-04 02:59:42,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-04 02:59:42,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-04 02:59:42,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-04 02:59:42,358 INFO L138 SettingsManager]: * Use SBE=true [2022-10-04 02:59:42,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-04 02:59:42,358 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-04 02:59:42,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-04 02:59:42,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-04 02:59:42,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-04 02:59:42,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-04 02:59:42,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-04 02:59:42,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-04 02:59:42,359 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-04 02:59:42,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-04 02:59:42,359 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-04 02:59:42,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-04 02:59:42,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-04 02:59:42,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-04 02:59:42,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-04 02:59:42,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-04 02:59:42,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 02:59:42,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-04 02:59:42,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-04 02:59:42,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-04 02:59:42,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-04 02:59:42,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-04 02:59:42,362 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-04 02:59:42,362 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-04 02:59:42,362 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-04 02:59:42,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-04 02:59:42,363 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-04 02:59:42,363 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-04 02:59:42,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-04 02:59:42,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-04 02:59:42,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-04 02:59:42,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-04 02:59:42,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-04 02:59:42,567 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-04 02:59:42,570 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-04 02:59:42,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-2.line586.bpl [2022-10-04 02:59:42,571 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-2.line586.bpl' [2022-10-04 02:59:42,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-04 02:59:42,621 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-04 02:59:42,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-04 02:59:42,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-04 02:59:42,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-04 02:59:42,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring_2w1r-2.line586.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:42" (1/1) ... [2022-10-04 02:59:42,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring_2w1r-2.line586.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:42" (1/1) ... [2022-10-04 02:59:42,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring_2w1r-2.line586.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:42" (1/1) ... [2022-10-04 02:59:42,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring_2w1r-2.line586.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:42" (1/1) ... [2022-10-04 02:59:42,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring_2w1r-2.line586.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:42" (1/1) ... [2022-10-04 02:59:42,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring_2w1r-2.line586.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:42" (1/1) ... [2022-10-04 02:59:42,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring_2w1r-2.line586.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:42" (1/1) ... [2022-10-04 02:59:42,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-04 02:59:42,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-04 02:59:42,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-04 02:59:42,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-04 02:59:42,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring_2w1r-2.line586.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:42" (1/1) ... [2022-10-04 02:59:42,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 02:59:42,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 02:59:42,725 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) [2022-10-04 02:59:42,735 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 [2022-10-04 02:59:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-10-04 02:59:42,758 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-10-04 02:59:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-10-04 02:59:42,759 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-10-04 02:59:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-04 02:59:42,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-04 02:59:42,760 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-04 02:59:42,908 INFO L234 CfgBuilder]: Building ICFG [2022-10-04 02:59:42,916 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-04 02:59:43,440 INFO L275 CfgBuilder]: Performing block encoding [2022-10-04 02:59:43,461 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-04 02:59:43,461 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-04 02:59:43,463 INFO L202 PluginConnector]: Adding new model ring_2w1r-2.line586.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:59:43 BoogieIcfgContainer [2022-10-04 02:59:43,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-04 02:59:43,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-04 02:59:43,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-04 02:59:43,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-04 02:59:43,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-2.line586.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:42" (1/2) ... [2022-10-04 02:59:43,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bda8d80 and model type ring_2w1r-2.line586.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 02:59:43, skipping insertion in model container [2022-10-04 02:59:43,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-2.line586.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:59:43" (2/2) ... [2022-10-04 02:59:43,475 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-2.line586.bpl [2022-10-04 02:59:43,481 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-04 02:59:43,489 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-04 02:59:43,489 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-04 02:59:43,489 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-04 02:59:43,631 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-04 02:59:43,683 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 02:59:43,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 02:59:43,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 02:59:43,685 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) [2022-10-04 02:59:43,694 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 [2022-10-04 02:59:43,713 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 02:59:43,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 02:59:43,724 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;@30556c3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 02:59:43,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 02:59:44,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 02:59:44,133 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 02:59:44,134 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (1/4) [2022-10-04 02:59:44,140 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 02:59:44,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 02:59:44,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 02:59:44,143 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) [2022-10-04 02:59:44,144 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 [2022-10-04 02:59:44,149 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 02:59:44,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 02:59:44,150 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;@30556c3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 02:59:44,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 02:59:44,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 02:59:44,161 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 02:59:44,161 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/4) [2022-10-04 02:59:44,169 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 02:59:44,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 02:59:44,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 02:59:44,210 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) [2022-10-04 02:59:44,223 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 [2022-10-04 02:59:44,229 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 02:59:44,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == writer_fnErr0ASSERT_VIOLATIONASSERT ======== [2022-10-04 02:59:44,230 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;@30556c3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 02:59:44,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 02:59:44,231 WARN L124 DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly. [2022-10-04 02:59:44,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location writer_fnErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-04 02:59:44,231 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 02:59:44,232 INFO L307 ceAbstractionStarter]: Result for error location writer_fnErr0ASSERT_VIOLATIONASSERT was SAFE (3/4) [2022-10-04 02:59:44,236 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 02:59:44,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 02:59:44,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 02:59:44,238 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) [2022-10-04 02:59:44,239 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 [2022-10-04 02:59:44,243 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 02:59:44,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == writer_fnErr0ASSERT_VIOLATIONASSERT ======== [2022-10-04 02:59:44,245 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;@30556c3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 02:59:44,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 02:59:44,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting writer_fnErr0ASSERT_VIOLATIONASSERT === [writer_fnErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 02:59:44,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 02:59:44,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1709532543, now seen corresponding path program 1 times [2022-10-04 02:59:44,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 02:59:44,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775425319] [2022-10-04 02:59:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 02:59:44,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 02:59:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 02:59:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 02:59:44,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 02:59:44,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775425319] [2022-10-04 02:59:44,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775425319] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 02:59:44,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 02:59:44,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-04 02:59:44,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672329682] [2022-10-04 02:59:44,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 02:59:44,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-04 02:59:44,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 02:59:44,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-04 02:59:44,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-04 02:59:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:59:44,713 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 02:59:44,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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) [2022-10-04 02:59:44,714 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:59:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:59:44,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-04 02:59:44,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting writer_fnErr0ASSERT_VIOLATIONASSERT === [writer_fnErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 02:59:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 02:59:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash -195269555, now seen corresponding path program 1 times [2022-10-04 02:59:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 02:59:44,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545997952] [2022-10-04 02:59:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 02:59:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 02:59:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 02:59:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 02:59:45,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 02:59:45,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545997952] [2022-10-04 02:59:45,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545997952] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 02:59:45,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 02:59:45,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-04 02:59:45,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803396420] [2022-10-04 02:59:45,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 02:59:45,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-04 02:59:45,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 02:59:45,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-04 02:59:45,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-10-04 02:59:45,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:59:45,166 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 02:59:45,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 17.727272727272727) internal successors, (195), 12 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 02:59:45,166 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:59:45,166 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:59:50,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:59:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-04 02:59:50,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-04 02:59:50,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting writer_fnErr0ASSERT_VIOLATIONASSERT === [writer_fnErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 02:59:50,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 02:59:50,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1968322147, now seen corresponding path program 1 times [2022-10-04 02:59:50,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 02:59:50,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742894359] [2022-10-04 02:59:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 02:59:50,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 02:59:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 02:59:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-04 02:59:50,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 02:59:50,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742894359] [2022-10-04 02:59:50,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742894359] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 02:59:50,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 02:59:50,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-04 02:59:50,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431493486] [2022-10-04 02:59:50,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 02:59:50,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-04 02:59:50,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 02:59:50,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-04 02:59:50,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-04 02:59:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:59:50,157 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 02:59:50,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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) [2022-10-04 02:59:50,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:59:50,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-10-04 02:59:50,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:59:54,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:59:54,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-04 02:59:54,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 02:59:54,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-04 02:59:54,773 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting writer_fnErr0ASSERT_VIOLATIONASSERT === [writer_fnErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 02:59:54,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 02:59:54,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1310276899, now seen corresponding path program 1 times [2022-10-04 02:59:54,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 02:59:54,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426523800] [2022-10-04 02:59:54,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 02:59:54,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 02:59:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 02:59:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 142 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-04 02:59:54,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 02:59:54,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426523800] [2022-10-04 02:59:54,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426523800] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 02:59:54,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992642508] [2022-10-04 02:59:54,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 02:59:54,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 02:59:54,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 02:59:54,901 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-04 02:59:54,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-04 02:59:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 02:59:55,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-04 02:59:55,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 02:59:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 142 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-04 02:59:55,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-04 02:59:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 142 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-04 02:59:55,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992642508] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-04 02:59:55,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-04 02:59:55,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-04 02:59:55,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633051259] [2022-10-04 02:59:55,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-04 02:59:55,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-04 02:59:55,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 02:59:55,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-04 02:59:55,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-04 02:59:55,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:59:55,386 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 02:59:55,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 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) [2022-10-04 02:59:55,386 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 02:59:55,386 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-10-04 02:59:55,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 02:59:55,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:00:03,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:00:03,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-04 03:00:03,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 03:00:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-04 03:00:03,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-04 03:00:03,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 03:00:03,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting writer_fnErr0ASSERT_VIOLATIONASSERT === [writer_fnErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 03:00:03,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 03:00:03,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1133211945, now seen corresponding path program 2 times [2022-10-04 03:00:03,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 03:00:03,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819670897] [2022-10-04 03:00:03,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 03:00:03,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 03:00:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 03:00:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 142 proven. 382 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-04 03:00:03,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 03:00:03,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819670897] [2022-10-04 03:00:03,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819670897] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 03:00:03,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267358610] [2022-10-04 03:00:03,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-04 03:00:03,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 03:00:03,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 03:00:03,640 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-04 03:00:03,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-04 03:00:03,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-04 03:00:03,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-04 03:00:03,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-04 03:00:03,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 03:00:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-10-04 03:00:04,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-04 03:00:04,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267358610] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 03:00:04,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-04 03:00:04,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-10-04 03:00:04,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210552501] [2022-10-04 03:00:04,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 03:00:04,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-04 03:00:04,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 03:00:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-04 03:00:04,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-10-04 03:00:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:00:04,901 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 03:00:04,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 91.75) internal successors, (367), 5 states have internal predecessors, (367), 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) [2022-10-04 03:00:04,902 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 03:00:04,902 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-10-04 03:00:04,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 03:00:04,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-04 03:00:04,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.