/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/queue_longer.line713.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-04 00:41:48,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-04 00:41:48,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-04 00:41:48,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-04 00:41:48,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-04 00:41:48,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-04 00:41:48,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-04 00:41:48,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-04 00:41:48,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-04 00:41:48,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-04 00:41:48,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-04 00:41:48,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-04 00:41:48,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-04 00:41:48,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-04 00:41:48,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-04 00:41:48,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-04 00:41:48,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-04 00:41:48,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-04 00:41:48,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-04 00:41:48,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-04 00:41:48,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-04 00:41:48,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-04 00:41:48,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-04 00:41:48,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-04 00:41:48,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-04 00:41:48,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-04 00:41:48,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-04 00:41:48,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-04 00:41:48,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-04 00:41:48,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-04 00:41:48,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-04 00:41:48,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-04 00:41:48,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-04 00:41:48,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-04 00:41:48,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-04 00:41:48,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-04 00:41:48,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-04 00:41:48,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-04 00:41:48,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-04 00:41:48,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-04 00:41:48,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-04 00:41:48,777 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-04 00:41:48,800 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-04 00:41:48,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-04 00:41:48,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-04 00:41:48,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-04 00:41:48,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-04 00:41:48,801 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-04 00:41:48,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-04 00:41:48,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-04 00:41:48,802 INFO L138 SettingsManager]: * Use SBE=true [2022-10-04 00:41:48,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-04 00:41:48,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-04 00:41:48,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-04 00:41:48,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-04 00:41:48,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-04 00:41:48,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-04 00:41:48,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-04 00:41:48,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-04 00:41:48,803 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-04 00:41:48,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-04 00:41:48,803 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-04 00:41:48,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-04 00:41:48,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-04 00:41:48,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-04 00:41:48,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-04 00:41:48,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-04 00:41:48,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 00:41:48,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-04 00:41:48,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-04 00:41:48,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-04 00:41:48,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-04 00:41:48,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-04 00:41:48,805 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-04 00:41:48,805 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-04 00:41:48,805 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-04 00:41:48,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-04 00:41:48,805 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-04 00:41:48,805 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-04 00:41:48,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-04 00:41:48,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-04 00:41:48,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-04 00:41:49,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-04 00:41:49,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-04 00:41:49,007 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-04 00:41:49,007 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-04 00:41:49,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/queue_longer.line713.bpl [2022-10-04 00:41:49,009 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/queue_longer.line713.bpl' [2022-10-04 00:41:49,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-04 00:41:49,056 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-04 00:41:49,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-04 00:41:49,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-04 00:41:49,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-04 00:41:49,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "queue_longer.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:41:49" (1/1) ... [2022-10-04 00:41:49,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "queue_longer.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:41:49" (1/1) ... [2022-10-04 00:41:49,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "queue_longer.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:41:49" (1/1) ... [2022-10-04 00:41:49,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "queue_longer.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:41:49" (1/1) ... [2022-10-04 00:41:49,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "queue_longer.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:41:49" (1/1) ... [2022-10-04 00:41:49,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "queue_longer.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:41:49" (1/1) ... [2022-10-04 00:41:49,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "queue_longer.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:41:49" (1/1) ... [2022-10-04 00:41:49,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-04 00:41:49,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-04 00:41:49,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-04 00:41:49,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-04 00:41:49,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "queue_longer.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:41:49" (1/1) ... [2022-10-04 00:41:49,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 00:41:49,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:41:49,173 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 00:41:49,175 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 00:41:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-10-04 00:41:49,200 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-10-04 00:41:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-10-04 00:41:49,200 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-10-04 00:41:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-04 00:41:49,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-04 00:41:49,201 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 00:41:49,361 INFO L234 CfgBuilder]: Building ICFG [2022-10-04 00:41:49,368 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-04 00:41:49,889 INFO L275 CfgBuilder]: Performing block encoding [2022-10-04 00:41:49,911 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-04 00:41:49,911 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-04 00:41:49,913 INFO L202 PluginConnector]: Adding new model queue_longer.line713.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:41:49 BoogieIcfgContainer [2022-10-04 00:41:49,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-04 00:41:49,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-04 00:41:49,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-04 00:41:49,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-04 00:41:49,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue_longer.line713.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:41:49" (1/2) ... [2022-10-04 00:41:49,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4de954 and model type queue_longer.line713.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:41:49, skipping insertion in model container [2022-10-04 00:41:49,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue_longer.line713.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:41:49" (2/2) ... [2022-10-04 00:41:49,920 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.line713.bpl [2022-10-04 00:41:49,925 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-04 00:41:49,932 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-04 00:41:49,932 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-04 00:41:49,932 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-04 00:41:50,037 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-04 00:41:50,101 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 00:41:50,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 00:41:50,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:41:50,103 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 00:41:50,104 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 00:41:50,137 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 00:41:50,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 00:41:50,152 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;@15299123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 00:41:50,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 00:41:50,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 00:41:50,207 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 00:41:50,209 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (1/4) [2022-10-04 00:41:50,216 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 00:41:50,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 00:41:50,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:41:50,218 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 00:41:50,219 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 00:41:50,223 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 00:41:50,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 00:41:50,224 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;@15299123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 00:41:50,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 00:41:50,628 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 00:41:50,630 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 00:41:50,630 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/4) [2022-10-04 00:41:50,636 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 00:41:50,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 00:41:50,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:41:50,664 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 00:41:50,665 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 00:41:50,668 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 00:41:50,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2Err0ASSERT_VIOLATIONASSERT ======== [2022-10-04 00:41:50,669 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;@15299123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 00:41:50,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 00:41:50,669 WARN L124 DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly. [2022-10-04 00:41:50,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-04 00:41:50,670 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 00:41:50,670 INFO L307 ceAbstractionStarter]: Result for error location t2Err0ASSERT_VIOLATIONASSERT was SAFE (3/4) [2022-10-04 00:41:50,674 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 00:41:50,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 00:41:50,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:41:50,677 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 00:41:50,678 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 00:41:50,681 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 00:41:50,682 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2Err0ASSERT_VIOLATIONASSERT ======== [2022-10-04 00:41:50,682 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;@15299123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 00:41:50,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 00:41:50,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:41:50,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:41:50,754 INFO L85 PathProgramCache]: Analyzing trace with hash 22986173, now seen corresponding path program 1 times [2022-10-04 00:41:50,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:41:50,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358577007] [2022-10-04 00:41:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:41:50,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:41:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:41:51,061 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 00:41:51,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:41:51,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358577007] [2022-10-04 00:41:51,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358577007] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:41:51,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:41:51,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-04 00:41:51,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643726719] [2022-10-04 00:41:51,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:41:51,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-04 00:41:51,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:41:51,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-04 00:41:51,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-04 00:41:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:51,093 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:41:51,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 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 00:41:51,094 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:51,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:51,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-04 00:41:51,119 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:41:51,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:41:51,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1543168718, now seen corresponding path program 1 times [2022-10-04 00:41:51,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:41:51,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057761026] [2022-10-04 00:41:51,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:41:51,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:41:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:41:51,343 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 00:41:51,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:41:51,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057761026] [2022-10-04 00:41:51,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057761026] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:41:51,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:41:51,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-04 00:41:51,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775521682] [2022-10-04 00:41:51,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:41:51,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-04 00:41:51,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:41:51,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-04 00:41:51,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-04 00:41:51,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:51,349 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:41:51,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 00:41:51,350 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:51,350 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:41:51,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-04 00:41:51,959 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:41:51,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:41:51,959 INFO L85 PathProgramCache]: Analyzing trace with hash 205708584, now seen corresponding path program 1 times [2022-10-04 00:41:51,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:41:51,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941707337] [2022-10-04 00:41:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:41:51,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:41:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:41:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 00:41:52,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:41:52,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941707337] [2022-10-04 00:41:52,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941707337] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:41:52,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:41:52,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-04 00:41:52,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842076201] [2022-10-04 00:41:52,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:41:52,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-04 00:41:52,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:41:52,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-04 00:41:52,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-04 00:41:52,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:52,132 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:41:52,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 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 00:41:52,136 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:52,136 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:41:52,136 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:41:53,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-04 00:41:53,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-04 00:41:53,158 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:41:53,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:41:53,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1900793741, now seen corresponding path program 1 times [2022-10-04 00:41:53,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:41:53,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408449758] [2022-10-04 00:41:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:41:53,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:41:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:41:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-04 00:41:53,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:41:53,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408449758] [2022-10-04 00:41:53,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408449758] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:41:53,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:41:53,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-04 00:41:53,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925042903] [2022-10-04 00:41:53,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:41:53,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-04 00:41:53,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:41:53,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-04 00:41:53,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-04 00:41:53,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:53,315 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:41:53,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 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 00:41:53,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:53,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:41:53,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-10-04 00:41:53,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:53,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:53,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:41:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-04 00:41:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-04 00:41:53,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-04 00:41:53,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:41:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:41:53,658 INFO L85 PathProgramCache]: Analyzing trace with hash -375724043, now seen corresponding path program 2 times [2022-10-04 00:41:53,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:41:53,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701122238] [2022-10-04 00:41:53,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:41:53,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:41:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:41:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-10-04 00:41:53,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:41:53,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701122238] [2022-10-04 00:41:53,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701122238] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:41:53,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:41:53,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-04 00:41:53,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541852123] [2022-10-04 00:41:53,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:41:53,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-04 00:41:53,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:41:53,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-04 00:41:53,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-04 00:41:53,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:53,762 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:41:53,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 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 00:41:53,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:53,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:41:53,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-10-04 00:41:53,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-10-04 00:41:53,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:41:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-04 00:41:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-04 00:41:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-04 00:41:54,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-04 00:41:54,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONASSERT === [t2Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:41:54,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:41:54,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1855771683, now seen corresponding path program 1 times [2022-10-04 00:41:54,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:41:54,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742364733] [2022-10-04 00:41:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:41:54,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:41:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:41:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-10-04 00:41:54,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:41:54,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742364733] [2022-10-04 00:41:54,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742364733] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:41:54,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:41:54,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-04 00:41:54,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364504840] [2022-10-04 00:41:54,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:41:54,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-04 00:41:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:41:54,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-04 00:41:54,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-10-04 00:41:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:54,396 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:41:54,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 44.90909090909091) internal successors, (494), 12 states have internal predecessors, (494), 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 00:41:54,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:41:54,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 00:41:54,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-10-04 00:41:54,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-10-04 00:41:54,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-04 00:41:54,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.